Industrial contract heat treatment shop for heat treatment of steel and metallic components: nitriding, nitrocarburizing, hardening and tempering, case hardening and induction hardening.
Härtetechnik Hagen GmbH
Tiegelstr. 2, 58093 Hagen (production and administration) · Buschmühlenstr. 54, 58093 Hagen (goods receiving/dispatch)New on Amplifa
Heat treatment since 1968
Härtetechnik Hagen GmbH is an industrial contract heat treatment shop based in Hagen (Westphalia), active in the field of finishing steel parts since 1968. The mid-sized company with around 50 employees carries out all common heat treatment processes, including gas nitriding, gas nitrocarburizing, carbonitriding, case hardening, hardening, hardening and tempering, annealing, normalizing, tempering, bainitic hardening and tempering (ADI) as well as the in-house, trademark-protected FER-N-OX process (nitrocarburizing followed by oxidation). Induction hardening is offered through the sister company Induktivhärtetechnik Hagen GmbH, and combined heat treatments are also possible. Steel, cast and sintered materials of any size are treated – from unalloyed to low- and medium-alloy steels through to case-hardening, heat-treatable and tool steels. With a large nitriding furnace (diameter 1200 mm x 2500 mm) and an intercritical hardening and tempering furnace for large parts, including wind turbine gears, the company also serves bulky components. Customers include large companies from mechanical and tool engineering as well as renowned automotive suppliers. All furnace systems operate fully automatically controlled; a batch monitoring system ensures complete traceability.
- Site
- Hagen
- Processes
- Nitriding, Gas nitriding, Nitrocarburizing, Gas nitrocarburizing, Nitrocarburizing with oxidizing, FER-N-OX© (modified nitrocarburizing process with subsequent oxidation), Oxidizing, Tempering
- Materials
- Steel, Metallic materials, Cast materials, Sintered materials, Unalloyed steels, Low-alloy steels, Medium-alloy materials, Case-hardening steels
- Certificates
- DIN EN ISO 9001:2015, DIN EN ISO 14001:2015, DIN EN ISO 50001:2018, IATF 16949, ISO 9001, ISO 14001, ISO 50001
- Founded
- 1968
- Employees
- around 50
- Industries
- Automotive industry/automotive suppliers, Mechanical engineering, Tool engineering, Hydraulics, Wind energy, Energy/e-mobility
- 01
Inquiry and technical consulting
- 02
Goods receiving and pre-cleaning of components
- 03
Batch preparation
- 04
Heat treatment (nitriding, hardening, hardening and tempering, etc.)
- 05
In-house laboratory testing and batch release
- 06
Goods dispatch and documentation
Materials and processes
Steel (unalloyed, low- and medium-alloy)
Base material for the entire spectrum of heat treatment processes from hardening to nitriding.
Case-hardening steels
Low-carbon case-hardening steels for case hardening with a hard surface layer and tough core.
Heat-treatable steels
Used in hardening and tempering and in induction hardening, among other things in drive technology.
Tool steels
High-alloy materials for high hardness, heat resistance and wear resistance.
Nitriding and heat-treatable steel 31CrMoV9
Application material for the combination heat treatment of nitriding/nitrocarburizing and induction hardening.
Martensitic stainless steels (hardenable)
Stainless, hardenable materials for applications with corrosion and wear stress.
Cast materials
Can be treated by nitriding, among other things for hydraulic components.
Sintered materials
Can be treated by nitriding as powder metallurgical materials.
Locations
Hagen (Tiegelstr.)
DEProduction and administration
- Materials
- Steel, cast and sintered materials
- Furnace systems (fully automatically controlled)
- Tempering furnaces
- Nitriding furnaces
- Large nitriding furnace Ø 1200 mm × 2500 mm
- Furnace for intercritical hardening and tempering of large parts
- Washing machines
- Cleaning system (pre-cleaning)
- In-house laboratory
- 3D cooling system (closed cooling circuit)
- Vacuum evaporator for salt recovery
Hagen (Buschmühlenstr.)
DEGoods receiving and dispatch
Treated components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| NitridingHeat treatment | – | – | – | – | all common steel, cast and sintered materials, unalloyed, low-alloy and medium-alloy materials |
| Gas nitridingHeat treatment | – | – | – | – | steel |
| NitrocarburizingHeat treatment | – | – | – | – | steel |
| Gas nitrocarburizingHeat treatment | – | – | – | – | steel (wide range of materials) |
| Nitrocarburizing with oxidizingHeat treatment | – | – | – | – | steel |
| FER-N-OX© (modified nitrocarburizing process with subsequent oxidation)Heat treatment | – | – | – | – | steel |
| OxidizingHeat treatment | – | – | – | – | – |
| TemperingHeat treatment | – | – | – | – | steel |
| AnnealingHeat treatment | – | – | – | – | steel |
| NormalizingHeat treatment | – | – | – | – | steel |
| HardeningHeat treatment | – | – | – | – | steel |
| Hardening and temperingHeat treatment | – | – | – | – | steel |
| Bainitic hardening and tempering (ADI)Heat treatment | – | – | – | – | steel |
| CarburizingHeat treatment | – | – | – | – | steel |
| CarbonitridingHeat treatment | – | – | – | – | steel |
| Case hardeningHeat treatment | – | – | – | – | low-carbon case-hardening steels |
| Induction hardeningHeat treatment | – | – | – | – | heat-treatable steels, suitable alloyed steels |
| Combination heat treatment (nitriding/nitrocarburizing + induction hardening, with sister company)Heat treatment | – | – | – | – | nitriding and heat-treatable steel 31CrMoV9 (1.8519) |
| Intercritical hardening and tempering of large parts (including wind turbine gears)Heat treatment | – | – | – | – | steel |
| Heat treatment of steel and metallic components (contract heat treatment shop)Heat treatment | – | – | – | – | steel, metallic materials |
| Hardness testing (Vickers, Rockwell, Brinell)Testing | – | – | – | – | – |
| Hardening depth determination (hardness profiles in cross-section)Testing | – | – | – | – | – |
| Microstructure testing (microstructure analysis)Testing | – | – | – | – | – |
11 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Nitriding furnaces | – | several | – | – | Hagen |
| Large nitriding furnace | – | 1 | Diameter 1200 mm x 2500 mm | 2001 | Hagen |
| Furnace for intercritical hardening and tempering of large parts | – | 1 | – | 1998 | Hagen |
| Furnace systems (fully automatically controlled, electronically regulated) | – | – | – | – | Hagen |
| Tempering furnaces | – | – | – | – | Hagen |
| Washing machines | – | – | – | – | Hagen |
| Cleaning system (pre-cleaning) | – | 1 | – | 2001 | Hagen |
| In-house laboratory with testing technology | – | 1 | – | – | Hagen |
| 3D cooling system (cooling circuit, replaces evaporative cooling towers) | – | 1 | – | 2021 | Hagen |
| Vacuum evaporator for salt recovery | – | 1 | – | 2018 | Hagen |
| Induction hardening systems (via sister company Induktivhärtetechnik Hagen GmbH, e.g. VL1000 Sinac) | VL1000 Sinac 200/300 S MFC | – | – | – | Hagen |
Additional services
Reference customers
Quality and certification
Every heat treatment is monitored and documented during the process by a batch monitoring system; batch records remain retrievable even years later. In the in-house laboratory with modern testing technology, every batch is checked after treatment against all specified requirements and is only released after flawless inspection.
| Evidence | Hagen (Tiegelstr.) |
|---|---|
| ISO 9001 | |
| IATF 16949 | |
| ISO 14001 | |
| ISO 50001 |
Company history
- 1968
Foundation of the contract heat treatment shop Brühl-Hagen GbR by Klaus Escher and Klaus Brühl in Hagen Eilpe, focus on nitriding.
- 1973
Ernst Escher succeeds Klaus Brühl in the management, resulting in the founding of Gebrüder Escher OHG.
- 1975
Conversion into Härtetechnik Hagen GmbH with annual revenue of 0.72 million DM and 8 employees.
- 1979
Founding of Induktiv-Härtetechnik Hagen GmbH.
- 1980
Relocation to the 'Oberes Lennetal' industrial area, 14 employees, 1.28 million DM revenue.
- 1995
Construction of a new warehouse.
- 1996
First certification according to DIN EN ISO 9002.
- 1997
Registration of the FER-N-OX trademark with the German Patent Office.
- 1998
Investments in modern nitriding furnaces and a furnace for intercritical hardening and tempering of large parts (including wind turbine gears).
- 2001
Introduction of the quality management system according to ISO/TS 16949; acquisition of a large nitriding furnace (Ø 1200 mm × 2500 mm) and a cleaning system.
- 2009
First certification according to DIN EN ISO 14001.
- 2012
Expansion of the company premises through acquisition of the neighboring property.
- 2013
First certification according to DIN EN ISO 50001 by TÜV Nord.
- 2018
Commissioning of a vacuum evaporator for salt recovery.
- 2019
Completion of the conversion to LED lighting and renovation of the warehouses in the goods receiving area.
- 2021
Conversion to an innovative 3D cooling system (closed cooling circuit).