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TRIBOLOGY WEAR & EROSION Tribology Analysis Technology Various Kinds of Jig and Fixture High Quality Wear and Friction Information R&B Inc. MTS BUSINESS PARTNER Copy Right, R&B Inc. Design and specification can be changed for quality improvement RB058-rev.1 Printed 01/2019

TRIBOLOGY WEAR & EROSION · 2019. 1. 28. · ASTM G115 Measuring and Reporting Friction Coefficients ... 2000.10 기술혁신기업 선정 2001.10 INNO Biz 기업 선정 2002.03 ISO

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    TRIBOLOGY

    WEAR & EROSION

    Tribology Analysis Technology Various Kinds of Jig and Fixture

    High Quality Wear and Friction Information

    R&B Inc. MTS BUSINESS PARTNER Copy Right, R&B Inc. Design and specification can be changed for quality improvement RB058-rev.1 Printed 01/2019

  • WEAR & EROSION

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    Preface Tribology is on the intermediate field between science and engineering that deals with the design, friction, wear

    and lubrication of interacting surfaces in relative motion.

    From this definition, it is evident that tribology plays an extremely important role in the design of mechanical

    equipment, since relative motion between surfaces of machine components cannot be avoided.

    The economic effect of improved understanding in tribology cannot be overemphasized.

    Reasonable design of sliding components and proper selection of materials and lubricants save the cost in

    maintenance and replacement costs, reduction of losses due to breakdowns, saving in capital investment

    through increased life of machines and lower energy consumption resulting from lower friction. Therefore, it is

    imperative to explore and utilize the fundamentals of tribology.

    For the convenience of the customers on tribology, R&B Inc. has developing the ‘TRIBOTM

    ’ brand system and

    supplies all kinds of testing equipment with reasonable price, quick delivery.

    The performance of all kinds of product has been certified and checked sufficiently with careful procedures.

    ‘TRIBOTM

    ’ is a not world leader brand in tribology field, but will be the world best brand for trying

    to eliminate the difficulty involved in wear and friction research field and developing new techniques

    for test.

    Brand-new Technology in Tribology Field

    If you want to find superior suitable products for tribology research field, R&B try to solve this problem.

    ‘TRIBOTM

    ’ products have various kind of advantages;

    ▪ Tribology analysis technology

    ▪ Simple and easy wear test and data analysis.

    ▪ High quality wear and friction information

    ▪ Various kind of jig and fixture.

    ▪ Application to wide range of tribology research field

  • Wear and Erosion

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    Wear Standards

    마모시험규격은 크게 마모의 기본적인 개념, 용어해설, 마찰계수 등을 다루는 일반적인 규격과

    시험규격으로 대별된다.

    시험 규격은 매우 다양하나 두 가지로 대별해 보면 Lubricant & Grease 관련 마모시험과 재료의 마모특성을

    시험하는 규격으로 나뉜다. 대표적인 ASTM 및 ISO 규격을 정리하면 아래와 같다.

    ▪ 마모일반 (Wear General)

    Wear Data Acquisition ASTM G163 Digital Data Acquisition in Wear and Friction Measurements

    Wear data format ASTM G118 Recommended Format of Wear Test Data Suitable for Databases

    Wear terminology ASTM G40 Standard Terminology Relating to Wear and Erosion

    Friction coefficient ASTM D1894 Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting ASTM G115 Measuring and Reporting Friction Coefficients ISO 8295 Plastics-Film and sheeting – Determination of the coefficient of friction

    ▪ Lubricant & Grease 관련 마모시험

    ASTM D3233 Measurement of Extreme Pressure Properties of Fluid Lubricants ASTM D3337 Determining Life and Torque of lubricating greases in small ball bearings JASO M348 Friction characteristics test method for automatic transmission fluids ASTM D2266 Wear Preventive Characteristics of Lubricating Grease (Four-Ball Method) ASTM D2596 Measurement of Extreme-Pressure Properties of Lubricating Grease (Four-Ball Method) ASTM D2783 Measurement of Extreme-Pressure Properties of Lubricating Fluids (Four-Ball Method) KS M2026 Petroleum products-Testing methods for load carrying capacity ASTM D5707 Measuring Friction and Wear Properties of Lubricating Grease Using a High-Frequency,

    Linear-Oscillation (SRV) Test Machine ASTM D2509 Measurement of Load-Carrying Capacity of Lubricating Grease (Timken Method)

    Lubricant & Grease Timken ASTM D2782 Measurement of Extreme-Pressure Properties of Lubricating Fluids (Timken Method) ASTM D4172 Wear Preventive Characteristics of Lubricating Fluid (Four-Ball Method) ASTM D5706 Determining Extreme Pressure Properties of Lubricating Greases Using a High-Frequency,

    Linear-Oscillation (SRV) Test Machine ASTM D4170 Fretting Wear Protection by Lubricating Greases ASTM D2670 Measuring Wear Properties of Fluid Lubricants (Falex Pin and Vee Block Method)

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    ▪ 재료관련 마모시험 Abrasion wear

    ASTM G65 Measuring Abrasion Using the Dry Sand/Rubber Wheel Apparatus ASTM D4060 Abrasion Resistance of Organic Coatings by the Taber Abraser ASTM G105 Conducting Wet Sand/Rubber Wheel Abrasion Tests ASTM G132 Pin Abrasion Testing ASTM B611 Determining the High Stress Abrasion Resistance of Hard Materials

    Ball-on Flat ASTM G133 Linearly Reciprocating Ball-on-Flat Sliding Wear

    Block on ring ASTM D2714 Calibration and Operation of the Falex Block-on-Ring Friction and Wear Testing Machine ASTM G137 Ranking Resistance of Plastic Materials to Sliding Wear Using a Block-On-Ring Configuration ASTM G77 Ranking Resistance of Materials to Sliding Wear Using Block-on-Ring Wear Test

    Cam 신뢰성 평가기준 RS D 0035 Assembled P/M Camshaft

    Cavitation Erosion ASTM G32 Cavitation Erosion Using Vibratory Apparatus ASTM G134 Erosion of Solid Materials by a Cavitating Liquid Jet

    Ceramic ball on disk ISO 20808 Determination of friction and wear characteristics of monolithic ceramics by ball-on-disc method

    Coal sampling ISO 1988 Hard coal - Sampling

    Coating wear KS D 8335 Methods of wear resistance test for metallic coatings

    Cross cylinder ASTM G83 Wear Testing with a Crossed-Cylinder Apparatus

    Four ball and EP Test Summary ASTM D2596 Measurement of Extreme-Pressure Properties of Lubricating Grease (Four-Ball Method) ASTM D2783 Measurement of Extreme-Pressure Properties of Lubricating Fluids (Four-Ball Method)

    Galling resistance ASTM G98 Galling Resistance of Materials

    Jet erosion ASTM G134 Erosion of Solid Materials by a Cavitating Liquid Jet

    Pin Abrasion ASTM G132 Pin Abrasion Testing

    Pin-on Disk ASTM G99 Wear Testing with a Pin-on-Disk Apparatus

    Reciprocating wear ISO 12156 Diesel fuel -Assessment of lubricity using the high-frequency reciprocating rig (HFRR) ASTM D5706 Extreme Pressure Properties of Lubricating Greases ASTM D5707 Measuring Friction and wear properties of lubricating grease ASTM G133 Linearly Reciprocating Ball-on-Flat Sliding Wear

    Rubber Abrasion wear ASTM G105 Conducting Wet Sand/Rubber Wheel Abrasion Tests

    Scratch test ASTM C1624 Adhesion Strength and Mechanical Failure Modes of Ceramic Coatings by Quantitative Single

    Point Scratch Testing Slurry abrasion

    ASTM G75 Determination of Slurry Abrasivity (Miller Number) and Slurry Abrasion Response of Materials (SAR Number)

    Solid particle erosion ASTM G76 Conducting Erosion Tests by Solid Particle Impingement Using Gas Jets

    Thrust washer wear ASTM D3702 Wear Rate and Coefficient of Friction of Materials in Self- Lubricated Rubbing Contact Using a

    Thrust Washer Testing Machine

  • Wear and Erosion

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    Introduction

    R&B Inc.는 시험계측기 전문생산 업체로 1997 년 설립되었습니다.

    1997 이후 산업체, 연구소 학교에 3,000 여 System 이 공급되어 사용되고 있습니다.

    ▪ Division

    • TOPMET Division Metallography 장비 및 소모품

    • TRIBO Division Wear 및 Erosion

    • UNITECH Division Material Testing System

    ▪ History

    1997.11 주)알앤비 설립

    1999.05 R&D center 설립

    2000.02 Venture 기업 등록

    2000.10 기술혁신기업 선정

    2001.10 INNO Biz 기업 선정 2002.03 ISO 9001: 2000 certificate

    2004.11 대덕 Techno Valley 사옥 이전

    2005.04 Nano Mechatronics Frontier 사업 참여 2009.07 CE Certificate

    2009.10 KOLAS 국제공인시험기관 인정

    2015.07 MTS Business Partner 협약

    ▪ User List

    Wear 및 Erosion 시험기 약 150 여 System 이 국가연구소, 학교, 산업체에 보급되어 사용 중이며

    특히 고온 마모 분야에 많이 사용되고 있다.

    ▪ R&B 마모관련자료 고체윤활제 및 마찰계수

    TN 14 마모시험의 know how

    마모 seminar 자료 외 다수

    R&B 보유자료 LIST 참조

  • WEAR & EROSION

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    ▪ Patent and Certification

    약 30 여종의 각종 인정 및 인증, 특허 등을 보유

  • Wear and Erosion

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    ▪ Product Index

    마모, 마찰, 마식 시험을 할 수 있는 다양한 시험기가 생산되며 고온, 저온, 습식, 건식, 불활성분위기 등

    여러 시험 조건의 설정이 가능하다. 또한 정형화된 시험기가 아닌 특정 목적의 Order made 마모시험기의

    공급도 가능하다.

    Model Number Description

    RB311 ST Scratch Tester

    RB100 MT Micro Tribo System

    RB101 MP Multi-purpose Wear Tester

    RB102 PD Pin on Disc Wear Tester

    RB103 RB Ring on Block Wear Tester

    RB104 FW Fretting Wear Test Machine

    RB105 AW Coal Abrasion Wear Tester

    RB106 RC Rolling Contact Wear Tester

    RB107 ST Seizure Tester

    RB108 RF Reciprocating Friction Wear Tester

    RB109 FB Four Ball Wear Tester

    RB110 ET Solid Particle Erosion Tester

    RB111 CE Cavitation Erosion Tester

    RB112 SE Slurry Erosion Tester

    RB113 CT Cam & Tappet Wear Tester

    RB115 FT Friction Tester

    RB116WA Wheel Abrasion Tester

    RB117GW Galling Wear Tester

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    Model No. RB311 ST SKECHTM

    Scratch Tester

    Description

    Scratch tester 는 Coating 층의 접착력을 측정하는 목적으로 사용한다. 시험은 Coating 층에 Diamond tip 을 이용하여 점진적으로 힘을 가해주면서 한쪽 방향으로 끌어 당겨 Tangential 하중(또는 Lateral 하중)의 이상 신호나 AE sensor 로부터의 이상 신호가 나오는 점까지 시험한다. Scratch test 는 3 가지 종류가 제안 1. Progressive load scratch test (PLST)

    2. Constant load scratch test (CLST)

    3. Multi-pass scratch test (MPST)

    Characteristics

    • ASTM C-1624 적용 가능 • Closed loop control

    • Acoustic emission detector 를 사용한 박리 검출(option)

    • 광학적 관찰 가능(option) • PC controlled operation

    • 실시간 Data display • 실시간 Video 및 Image 측정(Option) • 실시간 Data display • 측정 Data 와 광학적 관찰의 연결 가능 • Progressive load scratch test (PLST)

    • Constant load scratch test (CLST)

    • Multi pass scratch test (MPST)

    • 모든 시험 변수의 Setting 및 Control • Data report form

    Specification

    • Dimension: 610W x 300D x 715H

    • Weight: 80 kg

    • Normal force( Fn, Newton): 200 or more

    • Normal force resolution(N): 3mN

    • Tangential force (Ft, Newton): 200 or more

    • Tangential force resolution(N): 3mN

    • Stroke-Z direction (mm): 20 or more

    • Stroke resolution- Z direction: 10nm

    • Scratch stroke-X direction (mm): 150 or more

    • Scratch stroke resolution: 10nm

    • Loading rate (N/min.): 5~200

    • Scratch speed(mm/min): 0.001~100

    • Y-direction stroke (mm): manual 30 or more

    • Specimen table dimension (mm x mm): 40x30

    • X-Y table: 150x50

    • Indenter: Rockwell C Diamond cone or User

    defined indenter

    • Video microscope magnification (Option): 50x, 200x

    Introduction

    Scratch test covers the determination of the practical

    adhesion strength and mechanical failure modes of

    hard and thin ceramic coatings on metal or ceramic

    substrate at ambient temperature. These ceramic

    coatings are commonly used for wear/abrasion

    resistance, oxidation protection, and functional

    performance improvement.

    In this test method, a diamond stylus of defined

    geometry is drawn across the flat surface of a coated

    test specimen at a constant speed and a defined

    normal force for a defined distance. The damage

    along the scratch track is microscopically assessed as

    a function of the applied load.

    Special levels of progressive damage are associated

    with increasing normal stylus forces. The force levels

    which produce a specific type/level of damage in the

    coating are defined as a critical scratch load. The test

    method also describes the use of tangential force and

    acoustic emission signals as secondary test data to

    identify different coating damage levels.

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    Model No. RB100 MT

    미소마모시험기(Micro Tribo System)

    Description

    본 미소마모시험기는 주로 Coating 층이나 미세시편의 마모거동을 측정하는 Pin on Disc & Ball on Disc 마모시험기 이다. 구동 장치는 특별히 고안된 구동 장치를 채택하여 시편의 구동 및 수평 이동 정밀도를 증가시켰으며, 이동 거리 및 주기를 제어 할 수 있도록 하였다. 시편은 Holder 를 교체 함으로써 볼 및 핀으로 교환할 수 있다. 또한 전용 프로그램을 이용하여 특성 데이터를 실시간으로 볼 수 있다.

    Specification

    • Load capacity: 0.01N ~ 10N

    • Load: Precision weight

    • RPM: Max. 3000RPM

    • Power: 0.4kw Servo motor

    • Pin on Disc & Ball on Disc

    • Friction coefficient

    • Heating method: Peltier element

    • Heating range: RT ~ 1500C

    * Specifications can be changed with user’s define

    Test Method

    • Pin on Disc Test (ISO 7148, ASTM G 99)

    • Ball on Disc (ISO 7148)

    • Thrust Washer (ASTM D 3702)

    Specimen

    • Plate specimen size: up to 12x12x11 mm (Depth,

    Width, Height)

    • Ball specimen: 1, 2, 3 mm diameter

    • Pin specimen: 1, 2, 3 mm diameter x 10 mm length

    Display data

    • Sliding velocity

    • Normal force

    • Coefficient of friction

    • Friction force

    • Testing time

    • Number of revolution

    • Sliding distance

    • Temperature

    Control parameters

    • Sliding velocity

    • Normal load

    • Testing time

    • Testing cycle

    • Temperature

    Introduction

    To secure performance and durability of micro devices,

    each element should reduce friction and wear.

    Miniature mechanical devices such as MEMS and

    many devices of IT industries have received significant

    attention due to their great potential in practice.

    However, issues of surface interactions such as

    adhesion and wear in these structures have prevented

    their reliable operation and practical application.

    The low friction/wear technology aims at protection of

    severe surface damage of mechanical elements by

    minimizing the transfer of friction energy or adhesion

    generated at the contacting interface.

    The reduction of friction in turn reduces wear damage

    and thereby extends the life and reliability of products

    and leads to the improvement in the performance of

    precision mechanical elements.

    As the contact between two bodies is initiated from the

    individual asperities at micro/nano scale, a better

    understanding of the tribological behavior in the

    contact interface at micro/nano scale is great

    importance.

    This system is suitable to study on microtribology or

    nanotribology.

    Application

    • Friction, wear and lubrication phenomena in

    micro/nano scale

    • Tribology in head-disk interface of magnetic storage

    device

    • Ultra thin film lubrication in micro machine

    • Tribology in micro machine

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    Model No.RB101 MP

    Multi-purpose Wear Tester

    Description

    본 시험기는 Module 별로 다양한 마모시험 수행이

    가능한 다목적 마모/마찰시험기 이다. 회전, 왕복,

    Ring on block 등의 시험이 가능하며 온도, 습도,

    분위기 조절이 가능하다.

    하중은 작은 하중에서부터 큰 하중까지 정 하중을

    가할 수 있는 Hybrid type loading system(Patent)을

    적용하였다.. 시편은 Holder 를 교체 함으로써 볼 및

    핀으로 교환할 수 있다. 또한 전용 프로그램을

    이용하여 특성 데이터를 실시간으로 볼 수 있다. Specification • Load capacity: Up to 1kN • RPM: Max. 1,800RPM • Reciprocating frequency: up to30Hz • Reciprocating stroke: up to 25mm • Power: 0.4kw Servo motor • Pin on Disc & Ball on Disc • Friction coefficient • Heating range: RT ~ 150C • Block on ring module • Reciprocating module * Specifications can be changed with user’s define Test Method • Pin on Disc Test (ISO 7148, ASTM G 99) • Ball on Disc (ISO 7148) • Thrust Washer (ASTM D 3702)

    Introduction This multi-purpose wear tester is designed with modular types of rotating module, reciprocating module and block on ring module. Using the rotating module, pin/ball on disc test can be carried out reciprocating module is used for ball on flat and reciprocating cyclic wear test. Block on ring module is used for block on ring, pin on ring, ball on ring test. Display data • Sliding velocity • Normal force • Coefficient of friction • Friction force • Testing time • Number of revolution • Sliding distance • Temperature Control parameters • Sliding velocity • Normal load • Testing time • Testing cycle • Temperature

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    Model No. RB102 PD

    Pin on Disc 마모시험기(Pin on disc Wear Tester)

    Description

    하중 부가 방식에 따라 두 기종이 있다. Lever에 의해 하중을 가하는 형태 및 Air piston 및 Valve를 사용하여 하중을 조절하는 기종이다. 레버 비는 10:1, 2:1 두 가지로 조절 할 수 있다. Jig의 교체에 따라 One pin on disc, Three pin disc, One ball on disc, Three ball on disc, Thrust washer

    tester, Four ball test 등이 가능하다.

    Specification

    ▪ Rotational speed: 1 to 1,700 rpm

    ▪ Load capacity: 10, 50, 200kg (Selectable)

    ▪ Humidity control: 30 ~ 90% R.H

    ▪ Heating range: ~ 150°C (High Temp. is available with

    option)

    ▪ Lever ratio: 10:1, 2:1

    Test Method

    ▪ Pin on Disc Test (ISO 7148, ASTM G 99)

    ▪ Ball on Disc (ISO 7148)

    ▪ Thrust Washer (ASTM D 3702)

    Specimen

    Disc Specimen: 30, 60 mm diameter x 8 mm thick

    Pin Specimen: 5 mm diameter x 20 mm long

    Ball Specimen: 5.95 mm, 12.7 mm diameter

    Radius of Test Track: 0 to 60 mm

    Control parameters

    ▪ Rotation speed

    ▪ Temperature

    ▪ Load

    ▪ Time

    ▪ Cycle

    ▪ Sliding distance

    Recorded parameters

    ▪ Rotational speed

    ▪ Friction torque

    ▪ Temperature

    ▪ Number of revolution

    ▪ Test duration

    ▪ Sliding speed

    ▪ Friction coefficient

    ▪ Sliding distance

    Introduction

    Pin on disc wear tester is most popular system in wear

    testing machine. This system can be used as the ball

    on disc, pin on disc type with changing the sample jig

    and fixture.

    This system can do following wear test - Ball on disc

    (One ball, three ball), Pin on disc (One pin, three pin),

    Pin on plate, Four ball test, Rolling four ball test and

    Thrust washer test.

    There are two kinds of loading mechanism. One is

    lever &weight type and another is air piston type. Lever

    ratio have two steps and been changeable according

    to the testing purpose.

    PC driven controller and software can control the

    machine and make data acquisition and analysis very

    easily. All control parameters, current status of

    machine and data are displayed in large LCD panel.

    Report Form

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    Model No. RB103 RB

    Ring on Block Wear Test Machine

    Description

    본 시험기는 미끄럼 마찰에 대한 재료의 저항성을 결정 하는 실험을 할 수 있는 시험기 이다. 여러 조건에서 재료의 상대적인 미끄럼 마찰 특성을 결정 할 수 있도록 제작 되었으며, 다양한 분위기 및 모든 상황을 모사 할 수 있는 시험기 이다.

    Characteristics

    • Easy operating

    • High frame stiffness

    • Multi safety device

    • Control of motor rpm.

    • Easy to use for simple operation.

    • Control revolution for counter meter

    • Quick response on dangerous situation

    Test Method

    ▪ ASTM D2714

    ▪ ASTM G77

    ▪ ASTM G137

    ▪ ASTM D3704

    Specifications

    ▪ Motor: AC servo motor

    ▪ Loading mechanism: AC servo motor or hydraulic

    control system

    ▪ Load capacity : 20 ~ 10,000 N

    ▪ Load cell (10,000 N ~ 100 N changeable)

    ▪ RPM: 60 ~ 3,000 rpm

    ▪ Heating system: R.T to 150 ± 2°C

    ▪ Lubricating chamber: R.T to 150 ± 2°C

    ▪ Vibration sensor

    Display parameter

    • Control signal

    • Friction coefficient

    • Vibration

    • RPM

    • Time

    • Load

    • Total cycle

    Control parameter

    • Temperature

    • Load

    • Time

    • RPM

    • Cycle

    Introduction

    This system is designed for various Rolling Contact

    Wear Test and Simulation for sliding wear

    This test method covers a laboratory procedure to measure the resistance of materials under dry sliding conditions. The test utilizes a block-on-ring geometry to rank materials according to their sliding wear characteristics under various conditions. Wear test results are reported as specific wear rates calculated from volume loss, sliding distance, and load. Materials with superior wear resistance have lower specific wear rates. A block of known dimensions is brought into contact with a counter-face ring (usually metal) under controlled conditions of contact pressure and relative velocity. This is achieved using a block-on-ring configuration The test is continued until the steady state wear rate is established. Mass loss measurements made after the steady state is established are used to determine the steady state specific wear rate, which is the volume loss per unit sliding distance per unit load. The frictional torque may also be measured during the steady state using a load cell. These data can be used to evaluate the coefficient of friction for the test combination.

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    Model No. RB104 FW

    Fretting Wear Test Machine

    Description

    본 베어링 내구성 모사시험기는 재료의 내 마모성에 대한 특성을 평가하는 장치로서 Fretting wear 시험을 통해 재료의 상대적인 마모 특성을 비교 할 수 있는 시험기 이다.

    Controller

    Controller 는 시험의 Setting 조건을 설정하고 실제 실험을 수행하도록 제작되었다. Rotating RPM 은 AC servo inverter 에 의해 Control 되며, Rotating RPM 및 시험 Cycle 을 결정하여 입력할 수 있으며 RPM 및 Cycle 이 Digital display 된다.

    Specifications

    •Load capacity: 300N

    •Loading Type: Hybrid loading system

    •Electromagnetic type linear actuator

    •Maximum force: Max. 300 N

    •Stroke: ±4 mm

    •Max. Frequency: 30 Hz. (dependent on the load or

    displacement)

    •Maximum speed: 1,000 mm/sec

    •Stroke resolution: 1μm

    Test Method

    ▪ ASTM D4170

    ▪ ASTM G133

    Recorded parameters

    ▪ Load

    ▪ Friction force

    ▪ Temperature

    ▪ Frequency

    ▪ Contact potential

    ▪ stroke

    Introduction

    This system is useful to study on fretting resistance

    of steel ball and other components operated in

    fretting (wear) fatigue and fretting corrosion

    condition.

    This system is consisted of main unit (including

    electromagnetic actuator type loading system),

    friction force measuring sensor, displacement gage,

    controller and software.

    Followings are the specification of this system.

    Control parameters

    ▪ Frequency

    ▪ Temperature

    ▪ Load

    ▪ Test duration

  • WEAR & EROSION

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    Model No. RB105 AW

    Coal Abrasion Wear Tester

    Description

    본 시험기는 BS 1016-11 “Methods for analysis and testing of coal and coke. General introduction and

    methods for reporting results” 또는 ISO 1988 “Coal sampling”에 명시하는 방법에 따라 Coal 의 평가에 필요한 Abrasive 시험을 하기 위하여 개발된 마찰 마모 시험기 이다. 본 시험기는 원통형의 Chamber 에 규정에 정한 크기 및 분량의 Coal 을 넣고 역시 규격에 규정한 속도 및 시간 동안 시편이 장착된 Quadrant arm 을 회전시켜 시편의 마모되는 양을 측정하여 coal 의 특성을 측정하는 시험기이다.

    Characteristics

    • Easy operating

    • High frame stiffness

    • Multi safety device

    • Control of motor rpm.

    • Easy to use for simple operation.

    • Control revolution for counter meter

    • Quick response on dangerous situation

    Controller

    Controller 는 시험의 Setting 조건을 설정하고 실제 실험을 수행하도록 제작되었다. Rotating RPM 은 AC servo inverter 에 의해 Control 되며, Rotating RPM 및 시험 Cycle 을 결정하여 입력할 수 있으며 RPM 및 Cycle 이 Digital display 된다.

    Test Method

    ▪ ASTM G65

    ▪ BS 1061-11

    ▪ ISO 1988

    Specifications

    •Max. RPM: 1470

    •Drive motor capacity(kW): 3~4

    •Driving spindle size (mm): 170 Ø x 326L

    •Mill pot size(mm): 219.1 Ø x 8.18T x 229L

    •Environment

  • Wear and Erosion

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    Model No. RB106 RC

    구름접촉마모시험기 Rolling Contact Wear Test Machine

    Description

    재료의 구름, 미끄러짐 접촉에 의한 마모 현상을 Simulation 할 수 있는 고속, 고 하중용 Rolling Contact Wear Tester 이다. ASTM 2714, ISO7148 규격에 따라 시험을 수행 할 수 있고, Data acquisition 및 분석 Software 에 의해 온도, 하중, 시간, 회전 수, 속도 등을 On line 으로 Data 를 받아들이고 저장, Plotting 이 가능하도록 설계 되었다. 본 시스템은 원하는 하중의 제어를 Servo motor 에 의한 정 하중 장치를 부착하여 설정하중을 정확하고 손쉽게 부가할 수 있다.

    Characteristics

    • Load control: Servo motor closed loop control

    • Slip ratio control: 0 ~ 100%

    • Lubrication chamber

    • Full computer driver system controller

    • Window based system software

    Application

    • Rolling contact wear simulation

    • Sliding contact wear simulation

    • Bearing life test simulation

    • Scuffing test simulation

    • Gear wear simulation

    • Friction coefficient measurement

    • Upper & Lower disk test

    • Block on Ring test

    • Ring on Ring test

    Specification

    •Motor: AC servo motor

    •Loading mechanism: AC servo motor or hydraulic

    control system

    •Load capacity : 20 ~ 10,000 N

    •Load cell (10,000 N ~ 100 N changeable)

    •RPM: 60 ~ 3,000 rpm

    •Heating system: R.T to 150 ± 2°C

    •Lubricating chamber: R.T to 150 ± 2°C

    •Vibration sensor

    Introduction

    This machine is used for the study on high load

    lubricate power transmitting contacts and rolling

    contact fatigue of materials.

    The test rollers have crowned profile giving a well-

    defined circular contact zone and high Hertzian contact

    pressure.

    This system can be used for simulation of wear

    mechanism on rolling and sliding according to ASTM

    2714, ISO7148.

    Constant load is applied by closed loop controlled AC

    servo motor.

    Display parameter

    • Control signal

    • Friction coefficient

    • Vibration

    • RPM

    • Time

    • Load

    • Total cycle

    Control parameter

    • Temperature

    • Load

    • Time

    • RPM

    • Cycle

    Test Method

    ▪ ASTM 2714

    ▪ ISO 7148

  • WEAR & EROSION

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    Model No. RB107 ST

    Seizure Tester

    Description

    본 시험기는 A/C Compressor 의 구성부품인 사판과 Shoe 에 대한 내구성 검증을 통한 양산 품질의 확보 및 사판 개발에 따른 Coating 의 부착력 및 내마모성, 강도, 마찰계수 등을 조사하기 위한 시험기 이다 .

    Characteristics

    • Easy operating

    • High frame stiffness

    • Multi safety device

    • Control of motor rpm.

    • Easy to use for simple operation.

    • Control revolution for counter meter

    • Quick response on dangerous situation

    Controller

    Controller 는 시험의 Setting 조건을 설정하고 실제 실험을 수행하도록 제작되었다. Rotating RPM 은 AC servo inverter 에 의해 Control 되며, RPM 및 시험 Cycle 을 결정하여 입력할 수 있으며 Digital display 된다.

    Specifications

    •Maximum RPM: 8,000RPM

    •Formality torque: 11kgf.m

    •Motor power: 22kw

    •Pulley and V belt

    •Air cylinder (belt tension control unit)

    •Rotating shaft with lubrication system

    •Hydraulic actuator

    •Servo valve driver and control card

    Introduction

    Materials are required to slide against one another, particularly with poor or no lubrication, high friction levels and seizure are commonly seen to occur, which can cause component failure. The wear and seizure has been investigated in sliding against a hard steel counter-face by continuous loading experiments carried out in this seizure tester The wear characteristics of materials when considered as a function of load, exhibit distinct mild wear, severe wear and seizure regimes. Mild wear is characterized by formation of a protective iron-rich compacted layer. The severe wear is initiated when the protective layer is removed as a result of subsurface flow. On further increment of load this leads to seizure. Repeatable behavior was achieved in the tests and from the results, zones/points corresponding to seizure were identified based on previous definition from the literature. Friction coefficients behavior was also characterized.

  • Wear and Erosion

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    Model No. RB108 RF

    왕복동마모시험기 Reciprocating Friction Wear Tester

    High

    Description

    다양한 접촉조건 하에서 재료의 마찰, 마모특성을 평가 할 수 있는 장비로서 Point / Line / Area 접촉특성을 Jig 의 교체에 따라 구현할 수 있다. 원하는 Stroke 를 Setting 하여 다양한 접촉상태를 구현할 수 있도록 하였다. 분위기에 의한 시험조건을 구현할 수 있도록 Test chamber 를 설치하여 윤활조건 및 Gas 분위기에서 재료의 마찰, 마모거동을 평가할 수 있다.

    측정모드는 마찰력, 마찰계수, 마모량, 접촉저항, 온도로서 시험조건의 설정 및 시험 중 변화하는 데이터를 수집, 저장되도록 구성되었으며, 간단한 형태의 시편으로 미끄럼, 구름운동에 의한 마모, 마찰거동을 평가할 수 있다.

    Specification

    •Load range: 5 ~ 1,000 N

    •Load cell: 5N or 100N, 1,000N changeable

    •Transducer type : Piezo-Electric or strain gage type

    •Frequency range: 1 to 50 Hz

    •Stroke range: 0.5 ~ 20 mm

    •Heating method: cartridge or hot air heater

    •Heating range: ambient to 150°C (400°C option)

    •Temperature sensor: K type thermocouple

    Controlled parameters

    • Frequency

    • Temperature

    • Load

    • Test duration

    Recorded parameters

    • Load

    • Friction force

    • Temperature

    • Frequency

    • Contact potential

    • Friction coefficient

    • Stroke

    Introduction

    This system is the equipment used to evaluate a materials by reciprocating motion and is developed to perform various contact conditions The effects of speed and normal load can be examined under multiple lubrication regimes, and variations in the coefficient of friction can be observed as a function of crank angle degree.

    Test Method

    ▪ ASTM D5706

    ▪ ASTM D5707

    ▪ ASTM G133

    ▪ ISO 12156

  • WEAR & EROSION

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    Model No. RB109 FB

    Four Ball Wear Tester

    Description

    강구를 이용한 윤활유의 내마모성을 평가할 수 있는

    Four Ball Wear Tester 로서 ASTM D 2783, ASTM D

    2266, ASTM D 4172, ASTM D 2596 등의 규격에 따라

    모든 시험을 수행 할 수 있다.

    이 시스템은 컴퓨터와 연결되어 작동 시 마우스의

    클릭에 의한 시스템의 제어 및 작동이 이루어지도록

    구성 되었고 Data acquisition and analysis software 에

    의해 온도, 하중, 시간, 회전수, 속도 등을 실시간으로

    받아들이고 저장, Plotting 이 가능하도록 S/W 가 설계

    되었다.

    본 시스템은 원하는 하중의 제어를 Servo motor 또는

    Air cushion 에 의한 정 하중 장치를 부착하여

    설정하중을 정확하고 손쉽게 부가할 수 있다.

    규격에 따른 시험종류는 Four ball method, Extreme-

    pressure properties measurement 로 각종 윤활유

    (유압 작동유, 기어오일, 엔진오일 등)의 내마모성과

    극압 성능 등을 평가할 수 있다.

    Test Method

    •ASTM D2783

    •ASTM D2266

    •ASTM D4172

    •ASTM D2596

    Specification • Motor: AC servo motor • Load capacity: 250 ~ 10,000 N • Load cell (10,000 N, 1,000 N changeable) • RPM: 60 ~ 3,000 rpm • Heating system: R.T to 150°C • Test Ball: 12.7mm steel ball • Optional ball: Φ31/8”, Φ5/16”, Φ15/16”

    Application

    시험용 강구는 일반적으로 AISI Standard steel No. E-52100 (bearing steel) 12.7 mm, grade 25 EP

    (Extra polish) Rockwell C hardness 64~66 을

    사용하여 윤활유 및 Grease 류를 평가한다.

    Control parameter

    • Temperature • Load • RPM • Time • Cycle

    Introduction

    Four Ball Wear Test Machine is used to determine the relative wear-preventing properties of lubricating fluids and greases in sliding and rolling applications. Three steel balls are clamped together to form a cradle upon which a fourth ball rotates on a vertical axis. The balls are immersed in the oil sample at a specified speed, temperature and load. At the end of a specified test time, the average diameter of the wear scars on the three lower balls is measured. During the test, the load is increased every 10 minutes up to the point where the frictional trace indicates incipient seizure.

    Display parameter

    • Friction torque • Friction coefficient • Time • Cycle • RPM

    Accessory

    • Wear scar measuring system

    : Stereo microscope (zooming)

    : X-Y stage & Digital micrometer

    • Four Ball Test Jig : ASTM D 2596

    • Rolling Four Ball Jig

  • Wear and Erosion

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    Model No. RB110 ET

    Solid Particle Erosion Tester (DIMPLERTM

    )

    Description

    본 Solid particle erosion tester 는 상품명 DIMPLER

    TM로 ASTM G76~95 “Conducting Erosion

    Tests by Solid Particle Impingement Using Gas jets”의 규격을 만족하는 시험기이다 고체입자를 포함한 가스를 재료에 분사하여 재료의 Erosion 에 따른 손실을 측정하는 시험으로서 산업 전반에 걸쳐 많은 응용분야에 사용하고 있다. 예로서 발전소의 Coal ash 에 따른 튜브 손상의 모사 등이 대표적인 사례이다. 실제 Erosion 은 입자크기, 속도, 공격각도, 환경 등에 의해 영향을 받기 때문에 시험에 많은 변수를 갖는다. 따라서 한번의 실험으로 실험 결과를 도출하기는 어려우며 많은 실험결과를 평균하여 사용한다. System 의 구성은 압축공기를 조절하는 부분과 고체입자를 공급하는 부분, 노즐을 통하여 시편에 고체입자를 분사하는 부분, 시편 Stage 및 고체입자의 속도를 측정하는 부분으로 구성되어 있다. 또한 시험 시에는 사용하지 않으나 고체입자의 분사 속도를 측정할 수 있는 Double disc rotating velocity meter 가 공급된다.

    기기 구성 • 압축공기 조절부분 • 고체입자를 분사하는 부분 • 시편 Stage • Double disc rotating velocity meter

    표준시편을 이용한 기기의 성능평가 Erosion 의 경우 실험에 영향을 주는 인자가 다양하기 때문에 장비의 평가를 표준 시편을 이용하여 측정한다. 즉 규정에 적합한 시편을 준비하고 규정된 조건으로 실험을 하여 이미 정립된 Erosion 값이 얻어 지는지를 측정하여 기기의 적합성을 판단한다. • 표준시편 S20C 재료를 10x30x2 mm 로 가공 후 760C 에서 15 분간 유지 후 공기 중 냉각하여 ASTM 입도 9 및 경도 HRB 70 전후로 만든다. 시험 면을 #400 으로 연마하여 표면 거칠기를 RMS 1 ㎛ 정도로 만든다. • 표준시험조건 고체입자: #240 Al2O3 (평균직경 50 ㎛) 분사속도: 30m/s 노즐과 시편거리: 10mm 분사각도: 90 도 온도: 상온 입자 공급속도: 2.0 ± 0.5 g/min • 평균 Erosion rate 상기 조건으로 측정한 Erosion rate는 2.13~ 3.72 x 10

    -3 mm

    3/g 내에 존재하면 기기의 성능이 규격을

    만족한다고 평가한다.

    Introduction

    This test method covers the determination of material loss by gas-entrained solid particle impingement erosion with jet nozzle type erosion equipment. This test method describes one well characterized procedure for solid particle impingement erosion measurement. This test method utilizes a repeated impact erosion approach involving a small nozzle delivering a stream of gas containing abrasive particles which impacts the surface of a test specimen. This test method may be used to measure the solid particle erosion of different materials and has been used as a screening test for ranking solid particle erosion rates of materials in simulated environments. Actual erosion service involves particle sizes, velocities, attack angles, environments, etc.,

    Specifications

    •Max. compressive air pressure (psi): 100

    •Max. particle velocity (m/s): 100 or more

    •Feeder rate: Changeable

    •Nozzle diameter (mm): Changeable

    •Nozzle length (mm): More than 50

    •Sample elevating distance (mm): 30

    •Sample Tilting angle:15~90

    Double Disc Rotating Speed Meter

    Motor power (W) 250

    Distance of two disc (mm) 20

    Max. RPM 3,000

    Disc diameter (mm) 100

    Phase 220VAC, Single phase

    Test Method

    • ASTM G76

  • WEAR & EROSION

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    Model No. RB111 CE

    Cavitation Erosion Tester

    Description

    본 System 은 용액 내에서 고속으로 진동하는 재질의 표면에서 발생하는 Cavitation erosion 이 재료에 손상을 주는 현상을 측정하는데 사용한다. 고속 진동은 용액 내에서 Cavity 를 발생시키고 이의 충돌로 인하여 시편의 표면에 손상을 일으키게 된다. 본 System 은 고속 진동을 발생하는 초음파 Head, Controller, Timer, Horn 및 냉각 Bath 로 구성된다. 초음파 발생장치에 사용하는 출력은 대략 250 ~ 1000W 가 적당하다.

    Test Method

    • ASTM G32

    Specification

    • Specimen position control

    • Timer: Max. 2 hr (sec, min, hr)

    • High frequency vibrator: 20 kHz

    • Horn (Titanium)

    • Sample holder

    • Cooling bath: 1 liter ( -20 ~ +50°C±1°C)

    • Amplitude displacement: 50 micron±5%

    Standard Test Terms

    • ASTM D 1193 의 규격에 명시된 Type III reagent water 로서 증류수 또는 deionized water 를 사용

    • 용액의 깊이는 최소 100mm 이상, cooling coil 이 내장

    • 시편의 표면은 용액 내 12± 4mm 에 위치하게 설치

    • 시편의 중심은 축 중심으로부터 ±5mm 이내에 설치

    • 온도는 25±2˚ C 유지한다. • 용액 위의 증기압은 대기압 보다 6%이내. 만일 압력이 다르다면 그 값을 기술

    • 진폭은 50μ m ± 5%이내. • 특별한 경우 25 μ m 의 진폭을 사용 • 표준 조건을 사용하지 않는 경우에는 변화된 모든 조건을 기술

    Introduction

    This cavitation erosion test system is designed and

    developed to measure the cavitation damage on the

    face of a specimen vibrated at high frequency while

    immersed a liquid.

    The vibration induces the formation and collapse of

    cavities in the liquid, and the collapsing cavities

    produce the damage to and erosion (material loss) of

    the specimen.

    This system is consisted of high frequency generator,

    timer, horn, cooling bath and transducer controller.

    The vibratory apparatus used for this system produces

    axial oscillations of a test specimen inserted to

    specified depth in the test liquid.

    An acoustic power output of 250 to 1000W has been

    found suitable.

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    Model No. RB112 SE

    Slurry Erosion Tester

    Description

    본 시험기는 Model No. RB105 AW Abrasive Wear Tester 와 유사한 기기로서 다만 용액 내에 연마재를 넣어 회전 시키면서 재료의 액체 내에서의 Erosion 특성을 평가하는 장치이다.

    Characteristics

    • Easy operating

    • High frame stiffness

    • Multi safety device

    • Control of motor rpm.

    • Easy to use for simple operation.

    • Control revolution for counter meter

    • Quick response on dangerous situation

    Controller

    Controller 는 시험의 Setting 조건을 설정하고 실제 실험을 수행하도록 제작되었다. Rotating RPM 은 AC servo inverter 에 의해 Control 되며, RPM 및 시험 Cycle 을 결정하여 입력할 수 있으며 Digital display 된다.

    Specifications

    •Max. RPM: 500

    •Drive motor capacity(kW): 3~4

    •Driving spindle size (mm): 170 Ø x 326L

    •Mill pot size(mm): 219.1 Ø x 8.18t x 229L

    •Close side setting (mm): 7 X 40

    •Quadrant arm size(mm):190. 2 Ø x 48L

    •Blade specimen size(mm):38 x 38 x 11t

    •Environment

  • WEAR & EROSION

    22/26

    Model No. RB113 CT

    캠 타펫 마모시험기 Cam & Tappet Wear Tester

    자동차 엔진내의 Cam 과 Tappet 의 마모현상을 구현할 수 있는 기기로서 실제 자동차의 Cam 과 Tappet 을 Sample 로 사용하여 구동 시 Tappet 의 회전 및 마모현상을 구현하여 실제 엔진 내에서 구동형태와 동일하게 Simulation 할 수 있다.

    본 System 은 기존의 Rolling contact wear tester 에 추가로 Cam & Tappet 마모시험을 수행 할 수 있도록 하여 작은 공간에 다양한 시험을 수행 할 수 있다.

    Rolling contact 에 의한 Fatigue wear test, 회전 비의 조절에 의한 Sliding wear 현상과 Jig 의 교체에 의한 Block on Ring test (ASTM G77, ASTM D 3704)까지 수행 할 수 있어 다양한 형태의 마모시험이 가능하다.

    또, 자동 하중 부가장치를 사용하여 고 하중을 Weight 나 Lever 사용에 의한 불편한 하중가압 방식을 배제하고 AC motor 에 의한 Feed back 방식을 사용하여 마모시험 시 발생하는 마모 면의 형상에 따라 자동으로 일정한 하중을 제어할 수 있도록 하였다.

    윤활은 침적식 형태와 마찰면에 강제 주입이 가능하도록 구성되었고, 엔진내의 윤활유 온도와 동일한 형태를 Simulation 할 수 있다.

    시험 중 변화하는 마찰력, 마찰계수, 진동, 온도변화 등을 Monitoring 할 수 있으며, 이 값들의 Limit 를 설정하여 마모시험을 종료할 수도 있다.

    Cam & Tappet 시험의 경우 Cam 과 Tappet 의 접촉면에서 Tappet 의 회전현상을 Monitoring 할 수 있으며, Cam 과 Tappet 의 크기에 따라 접촉중심을 이동 할 수 있도록 고안되었다.

    Cam 과 Tappet 을 설치 시 접촉각의 수평을 맞출 수 있도록 수준계를 설치하여 항상 일정한 수평을 유지 할 수 있어 시험의 정확성을 기하였다.

    Introduction

    This system is designed for wear aspect between the

    cam and tappet in vehicles. Generally the sample is

    actual cam and tappet of interested engine.

    So, It is possible to simulate the actual condition of

    engine behavior.

    Also this system can be used as rolling contact wear

    tester including slip stick motion.

    Specification

    •Rotational speed: 1 to 3,000 rpm

    •Load control: Constant/Continuous control

    •Cam & Tappet load capacity: Max. 1,000 kgf

    •Spring force manual control type

    •Friction transducer: 9.8 N.m ~ 196 N.m (changeable)

    •Vibration sensor: Frequency response: 3 ~ 7,000 Hz

    •Acceleration range: ±100g

    •Heating range: ambient to 150°C

    •Lubricant method: Jet or Deposition

    Test Method

    • ASTM G77

    • ASTM D3704

    • ASTM D2782

  • 23 /26

    Model No. RB115 FT

    Friction Tester

    Description

    본 마찰 시험기는 판재와 블록 사이의 평면 마찰 특성을 평가하기 위해 제작된 장비이다. 깨끗한 표면을 가지는 일정한 크기의 판재 시편 위를 일정한 면적을 가지는 블록이 면 접촉한 상태로 일정한 속도로 미끄럼 운동에 의하여 블록과 판재 표면 사이의 마찰 계수를 측정하기 위한 장치이다. 구동은 Servo 모터와 드라이버를 이용하여 일정한 속도를 유지하게 되고, 최고 속도는 2m/min 까지 구동이 가능하며, Servo 모터에 의해서 가해지는 일정한 하중은 최대 1500kg 까지 가할 수 있다. 본 시스템은 전체 컴퓨터 구동에 의해서 이루어 지며, 데이터는 엑셀, 오리진, 노트 패드 등 여러 프로그램과 호환이 가능한 형식으로 저장된다.

    Characteristics

    • Easy operating

    • High frame stiffness

    • Multi safety device

    • Control of motor rpm.

    • Easy to use for simple operation.

    • Control revolution for counter meter

    • Quick response on dangerous situation

    Specifications

    •Load capacity: 100 kg to 1000 kg(Selectable)

    •Loading Mechanism: Servo motor

    •Speed: Max. 2000mm/min

    •Stroke: 300mm

    •Friction force: Maximum 2,000kg

    •Data acquisition rate: Max. 1 kHz

    Test Method

    • ASTM D5707

    • ISO 8925

    Introduction

    This friction and wear system is designed for

    evaluation the tribological properties between the plate

    and block.

    Single and cyclic tests are also possible with user’s

    abject, and all data is saved automatically including

    vertical load, tangential load and friction coefficient.

    System construction

    •Standalone type frame

    •Hydraulic servo system

    •Loading actuator & horizontal moving system

    •Load & friction force measuring system

    •Environmental chamber

    •Induction heating system (sample plate)

    •Cartridge heating system (counter sample)

    •Lower/ Upper jig plate

    •System controller

    •Data acquisition and analysis software

    •Fully computer control

  • WEAR & EROSION

    24/26

    Model No. RB116 WA

    Wheel Abrasion Wear Tester

    Description

    본 시험기는 습식 및 건식 모래와 Rubber Wheel 과의 마찰에 의한 재료의 Scratch 연마 저항성 결정을 위한 시험 및 초경합금 및 HRC 55 이상의 경도를 가진 Ceramic, Cermet 및 금속 기지의 경질재료의 고 응력 내마모성 평가시험에 사용 되도록 개발되었다.

    습식모래의 연마 시험은 Wheel 의 회전은 양면에서 Agitating vane 이 연마 Slurry 를 교반하여 Wheel 회전방향으로 접촉면에 연마재를 공급하며, 건식모래의 연마 시험은 Sand Hopper 와 연결된 Nozzle 을 사용하여 Sand flow rate 를 300 ~ 400 g/mm 속도로 Wheel 회전방향으로 접촉면에 연마재를 공급한다.

    Characteristics

    • Easy operating

    • High frame stiffness

    • Multi safety device

    • Easy to use for simple operation.

    • Quick response on dangerous situation

    Specifications

    • Load capacity: Max. 250N

    • Loading Type : Dead weight type

    • Rotating speed: Max. 260RPM

    • Speed control: Knob control

    • Slurry chamber volume: 3.8Liter

    Test Method

    • ASTM G65-94

    • ASTM G105-02

    • ASTM B611-13

    Introduction

    This Wheel Abrasion Wear Tester is designed to

    evaluate the scratch resistance of a material due to

    friction between wet and dry sand and rubber wheels.

    This system is consisted of Main frame, Wheel,

    Specimen Holder & Lever Arm, Weight, Slurry

    chamber & Sand hopper, Controller.

    Control panel

    • Power: Main: ON/OFF of power

    • E-STOP: Cut off AC motor power at emergency

    • Start: Test Start

    • Stop: Test Stop

    • Reset: Setting Reset

    • Timer/ Count: Test mode setting

    • Timer/ Counter/RPM: Time/Cycle/RPM display meter

    • Speed: Test speed control

  • Wear and Erosion

    25/26

    Model No. RB117 GW

    Galling Wear Tester

    Description

    자동차용 강판을 이용하여 프레스 Die가 판재를 누를

    때의 조건을 모사하는 Simulator로 자동차용 강판을

    Die Pressing 할 때의 문제점 연구에 사용되며,

    실제조건에 접근하기 위한 고 하중, 고속 변형이

    가능한 System이다.

    장치의 구성은 AC servo motor(15kW)에 의해

    회전하는 Specimen stage에 200mm x 200mm 규격의

    사각형 자동차용 강판이 장착되어 있고,

    유압 Servo valve에 의해 제어되는 정 하중용

    실린더에 3개의 사각형 Tip(12mm x 12mm, 20mm x

    30mm, 30mm x 30mm)이 부착되어 설정한 하중(max.

    5ton)으로 판재를 누른 후 1m/sec 이상의 속도로

    120도 회전하며 발생되는 마찰력(Torque)을

    측정한다.

    Specifications

    • Capacity: 5tonf Hydraulic constant loading system (Stress: Over 100Mpa)

    • Torque sensor: 300kgf-m (2.942KN-m) • Load cell: 5,000kgf • Servo valve: Moog G761, two stage, 38.0 lpm • Moog controller: G122-202-A001 J124-046(Closed

    Loop controls)

    • Hydraulic power unit: Flow rate 18 lpm Reservoir: 50 liters

    • Hydraulic actuator: 200mm stroke Load capacity: 5tonf

    • Rotating System: Max. linear speed:1000mm/sec

    Characteristic

    • Tip: 30mm x 20mm, 고압용: 12mm x 12mm • Tip size: 12 x 12mm (no rounding) & 20 x 30mm, 30

    x 30mm

    • Sample: 200 x 200 mm Sheet type 0.6~3.5 t • Maximum Linear speed: 최대 1m/sec 이상 • Sampling Rate: 400~500 /Total testing time • Data acquisition- Load, Torque, Angle (speed) • 3 Pin alignments • 5 KHz DAQ

    Test Method

    • ASTM G98

    Introduction

    Galling wear tester is designed to study the form of

    surface damage arising between sliding solids,

    distinguished by macroscopic, usually localized,

    roughening and creation of protrusions above the

    original surface plastic flow, galling situation or

    material transfer.

  • WEAR & EROSION

    26/26

    R&B Inc. 65-1Techno 8-ro, Yusung-Gu, Daejeon, Korea (34028) Tel: 82-42-935-0490 Fax: 82-42-935-0496 [email protected] www.randb.co.kr Shopping mall: shop.randb.co.kr

    mailto:[email protected]:[email protected]://www.randb.co.kr/http://www.randb.co.kr/http://www.shop.randb.co.kr/