Hardening Technology - Haerte- und Oberflaechentechnik · Vacuum hardening technology ... through individual heat treatment customized to the specific case and the contour of the

Hardening Technology

Vacuum heat treatment

Vacuum

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Hardening technology carries out the following heat treatment techniques:

• Stress relieving

• Quenching and tempering

• Hardening

• Tempering

• Precipitation hardening

• Soft annealing

• Normalizing

• Structural heat treatment

• Vapour tempering

• Subzero cooling

To the fore at are high-quality steels:

• Tool steels

• Cold-work steels • Hot-work steels • Plastic mould steels

• High-speed steels

• Powder-metallurgical steels

• Corrosion-resistant steels

• Nitriding steels

• Case-hardening steels

• Heat-treated steels

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successful customers are our successful customers are our successsuccesss

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Counterbore batch

Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system

Stages of Development

In 1972 started with salt bathes especially to heat treat precision tools.

In 1979, expanded with vacuum harde-ning equipment, which has been optimized steadily ever since.

With 32 vacuum hardening and vacuum tem-pering furnaces in their three vacuum centers in Nürnberg, Albershausen and Schmölln, ranks among the leading service providers in this sector.

In 2003, in the course of the technological deve-lopment with their partner company, re-placed their classic salt bath hardening line with an ultramodern automatic bell-type heat-treat-ment furnace with salt bath quenching.

always offers its customers the latest in for-ward looking technologies.

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Tools (DIN 1.2842)

Vacuum-treated components

Aluminium mould insert (DIN 1.2343)


Vacuum Hardening Technology

The results of heat treatment are:

• Minimum distortion and

• Maximum effi ciency in use

Comprehensive quality control ensures that the above results are stringently maintained and provides stimulus for the on-going improvementof our processes.

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time-temperature-process sketch for heat treatment of hot-work steels

uses this process for heat treating me-dium- to high-alloy tool and high-speed steels in conventional and powdermetallurgical pro-duction. While the bases for excellent technology pro-perties are already provided in the steel plants

optimizes

• High-precision tools and

• High-quality components

through individual heat treatment customized to the specific case and the contour of the tool or component.

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Large vacuum furnace

Injection mould (DIN 1.2343 / approx. 1 t.)

Cutting tool (DIN1.2379)

Vacuum hardening equipment

Batch example

Paring wheels

Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system

Special Treatment Processes

We offer our customers the followingspecial treatment processes:

• Induction hardening of cylindrical parts (Ø 5-10 mm x 200 mm) with automatic continuous run (larger parts on request)

• Partial tempering by induction

• Special batches for sophisticated shapes

• Subzero cooling processes• Special heat treatment for tools and components, which are PVD-coated, eroded, photo- etched or are subject to further heat treatment such as nitriding

• Oxidation of tools in our vacuum furnaces

Conventional method

(DIN 1.2379)

Microstructure of lede-

buritic chromium steels

100 μm

10 μm

Powder-metallurgical

method VANADIS 4 EXTRA

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Cutting tools (vacuum heat treatment)

Cutting tool (DIN 1.2379)

Injection mould


Service Performances

We guarantee your success - not only through our daily achievements in hardening and surface technology, but also through our wide range of services:

Following tests can be effected at our own state-of-the-art laboratories:

• Material analysis

• Microstructure analysis

• Damage analysis

• Nht-readings

• CHD-readings

• Hardness testing • acc. to Rockwell HRC

• acc. to Vickers HV

• acc. to Brinell HB

• Crack detection

• with die penetration

• with flux

Delivery notes should always indicate whether heat treatment suitable for PVD-coating or ero-ding is required. This will enable us to ensure opti-mum heat treatment for your tools.

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Hardness testing

Lab analysis

Our pick-up-service


HIGH-TECH KNOW-HOW in application systemsw

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Hardening technology Nitriding technology Coating technology

Vacuum hardening Plasma-nitriding PVD/PACVD coating

Induction hardening Gas-nitriding High-performace coating systems

Controlled atmosphere

hardening

Oxidizing Tribological coating systems

˙ in gas UniTwin® - combination systems

˙ in plasma

Improx® -oxidizing

Service

Laboratory (analyses, sample tests)

Consulting (materials, layouts)

Pick-up-service (with own fl eet)

UniCut® = Trade Mark of Fraisa (Switzerland)

Improx®/ UniDur® / UniNox® / UniPlus® / UniTwin® / TT® / WCC®/ Calida® = Trade Marks of H-O-T Härte- und Oberfl ächentechnik GmbH & Co. KG (Germany)

photography & design: www.fi namedia.de

H-O-T Vertriebs- und Logistik-Center GmbH & Co. KG

90425 Nürnberg Kleinreuther Weg 118 Phone: +49(0)911 - 36014-42 Fax: +49(0)911 - 36014-25 [email protected]

Our centers in Germany

Nürnberg (4 x) 04626 Schmölln-Nitzschka 59457 Werl 73095 Albershausen 96155 Buttenheim

87766 Memmingerberg

Our center in Turkey

16250 Bursa

2007

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Hardening Technology - Haerte- und Oberflaechentechnik · Vacuum hardening technology ... through individual heat treatment customized to the specific case and the contour of the