344 Bloor Street W, Suite 607, Toronto, ON Canada M5S 3A7 · 2019-06-03 · Introduction to our hydrodynamic bearing • Overview of our Facility and Experience • Global Client

344 Bloor Street W, Suite 607, Toronto, ON Canada M5S 3A7

www.lprglobal.com | www.uskoreahotlink.com

Tel.: +1-416-901-5591

E-Mail: [email protected]

http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings

http://www.lprglobal.com/

http://www.uskoreahotlink.com/

mailto:[email protected]

Contents Page

Introduction to our hydrodynamic bearing • Overview of our Facility and Experience • Global Client Reference• Core Industry Served and Product Capability

3-4

Our Bearing by Industry• Journal, Thrust and Tilting Pad Bearings for Turbines and

Generators• Configuration of Bearing on a Steam Turbine• Hydroelectric power plants – Water Turbine Bearings• Oil & Gas – Pump and Compressor Bearings

5

678

Projects, and R&D Capability • GE OEM Bearing Supplied to Nuclear Power Plant Clients• Gas Turbine Bearing Cases• Hydrodynamic Metal Bearing Quality Control• Design, Analysis, and Repair – Rebabbitting• Customized Engineering Design and Production

• PEEK material• New White Metal Centrifugal Casting Method-• >250 MW Gas Turbine Manufacturing Project• Horizontal Test Rig – Journal and Thrust Bearing Test

9101112

13-14

Bearing Manufacturing Process 15

Certifications 16

http://www.uskoreahotlink.com/products/manufacturing/compressor-turbine-blade-manufacturer/

http://www.uskoreahotlink.com/products/manufacturing/compressor-turbine-blade-manufacturer/

3

Hydrodynamic Metal Bearings Overview

South Korea being the 5th largest nuclearpower producer (generated electricity),DMB started out as one of the largestbearing producer for S.Korean nuclearplants, often supplying the entire fluidfilm bearings required for new plants.We’ve been supplying hydrodynamicmetal bearings and machine componentsto not only nuclear, hydroelectric, andrenewable power plants but for globalturbine, compressor, pump, engine,generator manufacturers.

Major Clients

Over the years, we have manufactured for and served global clients providing custom designed bearingsto global turbine OEM spec bearings as replacements.

Hydrodynamic Bearing Manufacturer - Introduction and History

Gas Turbine Tilting Pad Journal Bearing Assembly

Gas Turbine Tilting Pad

With two ISO 9001 and ISO14001 certified manufacturing plants and an R&D center based in Busan,Korea, our factory is one of the few suppliers that was able to meet the needs and expectations of all sixcore power plants in S.Korea (Kepco). Our core competencies is in designing, manufacturing, repairingand rebabbitting of hydrodynamic bearings.

With 4 manufacturing patents and 2 design patents, our bearing designing and manufacturing skillsproduce quality parts for applications that require high precision, strength, and finishing quality such aspower plants, gas turbines, steam turbines and generators, heavy machineries, hydro turbines, pumps,and marine propellers.

http://www.uskoreahotlink.com/products/epc/hydrodynamic-bearings/

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4

Hydrodynamic Metal Bearings Overview

Hydrodynamic Bearing Industry Served and Product Capability


Power Generation (Turbine, Generators for Nuclear, Thermal, Hydroelectric Plants)• Turbine Bearing Assembly• Liner Bearing• Liner and Casting Assembly• Bearing Ring• Journal Bearing (Sleeve)• Thrust Bearing Pad• Guide Bearing Pad• Upper Guide Pad• Turbine Guide Bearing Shell• Hydraulic Sealing• Gas Turbine Bearings • Double Tilting Pad Bearing and Assembly• Elliptical Bearing Casing• Thrust Bearing Casing• Thrust Ring• Thrust Plate

Compressor, Pumps, Industrial Plants• Pump Sleeve Bearing• Booster Pump Bearing• Thrust Pad Bearing• Guide Pad Bearing• Fan Sleeve Bearing• Compressor Thrust Bearing• Bushing Bearing• Labyrinth Seal• Lube Oil Tank Bearing • Pedestal Bearing – Bearing Housing

Shipbuilding and Marine• Camshaft Bearing and Ring• Crosshead Bearing • Shell Bearing• Guide Shoes• Ship Engine Bearing• Stern Tube Bearing• Intermediate Shaft Bearing Assembly• Thrust Pad Bearing


5

Power Industry Bearings: Turbine Bearings Generator Bearings

Lower Tilting 2 Pad Bearing for Gas

Turbine

Generator BearingTilting Pad Bearing Assembly for Steam Turbine

Elliptical Bearing

Thrust Plate

Self-Equalizing Tilting Pad Thrust Bearing

Journal Bearing Assembly for Steam Turbine

Non-Equalizing Tilting Pad Thrust Bearing

Our fluid film bearings are supplied to the power generation industry. Our bearings are installed insidepower turbines and generators to support rotational movement of shafts. Our scope includes: Babbittjournal bearings, tilting pad bearings and assembly, thrust bearings. All our bearings are designed,manufactured in house.

Our tilting pad bearing allows bearing pads to move about a pivot, following the movement of the shaftto attain its own equilibrium position, and eliminating potential of whirl instability. Our tilting padbearings are custom manufactured to have different number of pads, preload, pivot offset, type of pivotand orientation of the pads (LBP-load between pivots and LOP-load on pivots). Tilting pad journalbearings are applied to high speed and high performance compressors, as well as steam turbines, gasturbines and pumps, boosting dynamic stability of the rotors. We can supply the full customized padbearing assembly, as well as the parts inside such as the casing and the pads.

Journal bearing capability: diameter up to 1,500 mm ID and length up to 2000 mmThrust bearing capability: 2565 mm ODBase Metal: ASTM A105 / B50A517B2 / SF440A / SC450 / S20C-N, etcWhite (Babbitt) Metal: ASTM B23 Gr2 / B21A14 / WJ2/Tegostar/ WL2, etc



THRUST BEARING ASSEMBLY

DOUBLE TILTING PAD BEARING ASSEMBLY

ELLIPTICAL BEARING ASSEMBLY

Sample Configuration of Bearing Assembly on Steam Turbine



7

Hydroelectric power plants – Water Turbine Bearings

We provide specialized bearing materials for the hydro power industry. We makeBabbitt bearings and a super engineered plastic material PEEK bearing that we’vedeveloped through a 3 year R&D partnership with the Korea Hydro & Nuclear Power.This material provides increased stability of the hydro turbine and saves material cost.


THRUST BEARING PAD

GUIDE BEARINGPAD

UPPER GUIDE PAD

TURBINE GUIDE BEARING SHELL


8

Bearings for Oil & Gas – Pumps and Compressors

LPB Tilting 5 Pad Bearing


Pump Sleeve Bearing (Pressure Dam Bearing)

Booster Pump Bearing(Offset Half Bearing)

Lube Oil Tank Bearing(Lobe Bearing)

Fan Sleeve Bearing

Guide Pad Bearing

Labyrinth Seal Bushing Bearing

Compressor Bearing

Pedestal Bearing


9

GE OEM Bearing Supplied to Nuclear Power Plant Clients

The process of manufacturing a bearing that fits GE specification starts with material selectionand inspection. After tinning, we processed centrifugal casting with our centrifugal castingmachine. Then we process ultra scan WM inspection before we move on to rough machiningand final machining. For a bearing shell liner, we move straight into dimensional inspection anda non destructive testing before shipping out, but for a generator bearing assembly, weassemble the parts after rough machining, and go through final machining after.

Bearing Shell Liner

Generator Bearing Assembly



10

Gas Turbine Bearing Cases

The process of manufacturing a gas turbine bearings depends on the type of bearing required.For instance, our 4 pads that go inside a tilting pad bearing was manufactured by gravitycasting, then a ultra scan WM inspection. After that, we processed through final machining,and dimensional check. Then we need to check for assembly clearance, and machinedclearance. We finish off with PT check.But when we make lower 2 pads for the tilting pad bearing, we start with tinning, then gravitycasting. We inspect the specimen via Chalmers Test, then contact check. We then move on tomachining- final machining and relief machining. Lastly we proceed to PT check anddimensional check before we ship out.

Tilting Pad Bearing (4 Pads)

Tilting Pad Bearing (Lower 2 Pads)



11

Hydrodynamic Metal Bearing Quality Control

We have strict quality control processes from the designing stage, to analysis and manufacturing, withtest reports at the end to produce bearings and pedestals that meet the quality.

Bearing Analysis

Bearing Pedestal Analysis

Bonded B.C

Condition at

Interface

Bearing Assembly Mounting Locations

Fixed B.C Condition at bottom face

Force Condition: 2000 kg (Vertical, Z)

Bearing Designing Capability

OFFSET HALF BEARING PRESSURE DAM BEARINGCYLINDRICAL JOURNAL BEARING

ELIPTICAL JOURNAL BEARING TILTING PAD BEARING

Pedestal bearing supporting the rotor in an independent pedestal housing separated from the main casing. Designed through FE structural analysis.


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12

Bearing Repair – Rebabbitting

As a rare quality class I certificate holder for nuclear power plant services and vast experiencesproviding services on-site for reactor coolant pump repair and turbomachinery repairs, our facilityprovides rapid bearing restoration to minimize operation costs for power plants.

Our bearing repair process involves the removal of damaged babbiting metal, and Rebabbitting a newbabbitting metals (or white metals) in as little as 4 days. Journal Bearing repairs involve bearing failureanalysis, and bearing retrofit design.

Send in your original housing or casings for rebabbitting, and save 50% costcompared to producing a new bearing assembly.

Bearing Repairs: RCP Retrofit and Rebabbitting

Journal Bearing Repair case

RCP Bearing Retrofitting case


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13

Customized Engineering Design and Production

Power Plant Super Engineering Plastic Bearing for Aberration Generators

New White Metal Centrifugal Casting Method- In Partnership with TEGOSTAR

Variance of compressive yield strength Variance of material creep test

Pulverizing Mill Reduction Gear Thrust Bearing -In Partnership with KOSPO

>250 MW Gas Turbine Manufacturing Project- Bearing Supplied

For the possibility of using K-PEEK instead of white metal for thrust bearing, and to lower friction and increase efficiency on the guide bearings, and to extend the life of turbine bearings


Undamped Mode of SJG1 Hydro TG Rotor5000 Mode 3, Forward whirl

Rotating speed (rpm) = 514Whirl natural freq. (rpm) = 2370.21LogDec = -2.68515e-010

3D Undamped Mode Shape of SJG1Hydro TG RotorMode 3, Forward whirlRotating speed (rpm) = 514Whirl natural freq. (rpm) = 2370.21

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14

Horizontal Test Rig – Journal and Thrust Bearing Test

Journal Bearing and Thrust Bearing with a shaft diameter of Ø 100mm ~ 200mm | Speed: 3,600rpmRadial Load: 5 Ton | Thrust Load: 2 Ton

Vertical Test Rig – Turbine Shaft

Turbine Shaft of diameter Ø 95mm and speed of 800 rpm: 800rpmThrust Load: 2 Ton


Customized Engineering Design and Production

Horizontal Bearing Test Rig Schema

Static Pressure(Maximum Load 2 Ton)Shaft (Journal) Diameter Thrust Bearing

Motor (20KW)

Radial Bearing Static Pressure(Tilting or Journal Bearing) (Maximum Load 5 Ton)

Vertical Bearing Test Rig Schema

Static Pressure(Maximum Load 2 Ton)

Upper GuideBearing

Tilting Thrust BearingShaft (Journal)

Diameter(095)

Radial Bearing Lower GuideBearing

Motor (5KW)


15

Metal Bearing Manufacturing Process

Heat Treatment Hydrogen removal and

Stress relief

Material Supply- Forging, Casting or Copper, etc

Back Metal NDT-UT/MT Material quality check and

confirm inspection by specialist

Rough Machining for size secure and Removing mill

scale

Machining Before Babbittingand determination of Babbitt

thickness

Tinning – 99.9% of Tin (Sn) Temp. and holding hour

monitored and maintained.

Centrifugal Casting – rpm and jig temperature

monitored

Rough Machining After Babbitting Inner side of Babbitt

metal surface machining

Accessory Machining- Includes half joint machining, hold and

tap machining and oil dam machining process

White Metal /Babbitt Metal NDT / UT - Follows the acceptance criteria of

customer

White/Babbitt Metal NDT-PTPT Testing of the Babbitt material surface inside

Final Machining

Inspection -Dimensional inspection, visual inspection

Polishing and Assembly-Removal of dirt, and polishing

burr

Packaging and Shipping



16

of QualificationBharat Heavy Electricals Ltd Certification of Qualification

Qualification

Certificate of Qualification

Qualification

Certifications


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LPR Global, Inc.344 Bloor Street W, Suite #607 Toronto, ON M5S 3A7 Canada

www.lprglobal.com | www.uskoreahotlink.com

Tel: +1-416-901-5591

E-Mail: [email protected]

U S K O R E AH ^ T L I N K

BY LPR GLOBAL INC.

http://www.lprglobal.com/

http://www.uskoreahotlink.com/

mailto:[email protected]

Documents

344 Bloor Street W, Suite 607, Toronto, ON Canada M5S 3A7 · 2019-06-03 · Introduction to our hydrodynamic bearing • Overview of our Facility and Experience • Global Client