Cemented carbide components, wear protection tools and technical coatings from blank production to the finished product
DURIT Hartmetall GmbH
Wuppertal · Albergaria-a-Velha · Las Rozas de Madrid · Simões Filho/BahiaNew on Amplifa
Cemented carbide and coatings from a single source
DURIT Hartmetall is a sintered materials specialist based in Wuppertal that manufactures cemented carbide solutions from a single source: from blanks to engineered components to cutting, drawing, stamping and forming tools. Production includes powder production and spray drying, powder pressing with pressing forces up to 20,000 kN, green compact machining with diamond tools, sinter-HIP sintering as well as CNC grinding, die sinking and wire EDM and polishing. The material base is tungsten carbide-based cemented carbides with cobalt, nickel or nickel-chromium binders as well as technical ceramics; in addition, the company offers thermal spray coatings (HVOF, APS, EAWS), laser cladding and PVD/PACVD and CVD coatings. A CAD-supported design department supports development with structural mechanical analyses in Ansys. The products are used in industries such as pump, valve and compressor engineering, oil, gas and petrochemicals, recycling and shredding technology, stamping and forming technology as well as mechanical and plant engineering. In addition to the company headquarters in Wuppertal, DURIT maintains sites in Portugal, Spain and Brazil.
- Site
- Wuppertal
- Processes
- Cemented carbide blank production (pressing, green compact machining, HIP sintering), Blanks up to max. 500 mm outside diameter; small parts from bore diameter 0.5 mm;, CNC grinding (diamond-tipped tools), Die sinking EDM, Wire EDM, Polishing, Regrinding service / repair of wear parts, Cemented carbide recycling (purchase of WC/Co scrap, zinc process, electrolytic reprocessing)
- Materials
- Cemented carbide (tungsten carbide/cobalt), Tungsten carbide, Titanium carbide, Tantalum carbide, Chromium carbide, Cobalt, Nickel, Iron
- Certificates
- DIN EN ISO 9001:2015, ISO 9001:2015, ISO 14001:2015, ISO 50001:2018, ISO 56001:2024, ISO 9001, ISO 14001, ISO 50001, ISO 56001
- 01
Consulting and CAD-supported design
- 02
Powder mixing, milling, drying (spray dryer)
- 03
Powder pressing up to 20,000 kN
- 04
Green compact machining (turning, milling, drilling, grinding)
- 05
Sinter-HIP sintering
- 06
Mechanical and physical materials testing
- 07
CNC grinding, die sinking and wire EDM, polishing
- 08
Coating (HVOF, APS, EAWS, laser cladding, PVD/CVD)
- 09
Final inspection, regrinding service, recycling
Materials and processes
Cemented carbide (tungsten carbide/cobalt)
Standard cemented carbide for wear-resistant tools and components with balanced hardness and toughness.
Cemented carbide with nickel binder
For applications subject to corrosion, e.g. pump, valve and compressor engineering.
Cemented carbide with nickel-chromium binder
Enhanced corrosion protection for extreme process conditions.
Carbides (titanium carbide, tantalum carbide, chromium carbide)
Hard phases for targeted configuration of hardness and wear resistance.
Technical ceramics
High-performance ceramics for wear and corrosion protection applications.
High-velocity oxygen fuel spraying
Carbide coatings (100–500 μm) with bond strength above 80 MPa on large-volume components.
Atmospheric plasma spraying
Ceramic coatings (200–1,000 μm) for thermal barrier and wear protection applications.
Wire flame spraying
Metal coatings (200–5,000 μm) e.g. of Cu, Mo or NiCr for aerospace applications.
Laser cladding
Fusion-metallurgically bonded coatings from 0.2 to 5 mm with bond strength above 300 MPa.
PVD/PACVD coatings
Thin-film finishing of cemented carbide and steel tools, e.g. MegaTiN, HardTiL, DiExtra.
CVD coatings (TiC/TiN)
CVD coating with high hardness and low coefficient of friction, also for interior coating.
Sites
Wuppertal
DECompany headquarters: administration, technical departments and service; blank production, machining on site.
- Materials
- Cemented carbide (WC/Co)
- High-performance presses (up to 20,000 kN)
- Spray dryers
- Sinter-HIP systems
- CNC grinding machines
- Die sinking EDM systems
- Wire EDM systems
Albergaria-a-Velha
PTProduction and sales (DURIT – Metalurgia do Tungsténio, Lda.)
- Materials
- Cemented carbide (WC/Co)
Las Rozas de Madrid
ESSales (DURIT Ibérica, S.L.)
Simões Filho/Bahia
BRSales and site (DURIT LTDA)
Components
Inside the production
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Cemented carbide blank production (pressing, green compact machining, HIP sintering)Casting | – | – | – | – | Cemented carbide (WC/Co), Tungsten carbide, Titanium carbide, Chromium carbide, Cobalt, Nickel |
| Blanks up to max. 500 mm outside diameter; small parts from bore diameter 0.5 mm;Casting | – | Outside diameter max. 500 mm | Bore diameter from 0.5 mm | – | Cemented carbide (WC/Co) |
| CNC grinding (diamond-tipped tools)Machining | – | – | – | – | Cemented carbide |
| Die sinking EDMMachining | – | – | – | – | Cemented carbide |
| Wire EDMMachining | – | – | – | – | Cemented carbide |
| PolishingSurface | – | – | – | – | Cemented carbide |
| Regrinding service / repair of wear partsMachining | – | – | – | – | Cemented carbide |
| Cemented carbide recycling (purchase of WC/Co scrap, zinc process, electrolytic reprocessing)Engineering | – | – | Box up to 20 kg; drum up to 250 kg | – | Cemented carbide (WC/Co), Tungsten carbide, Cobalt |
| Laser cladding (laser deposition welding), coating thickness 0.2 to 5 mm and more, bond strength >Surface | – | – | – | – | Cemented carbides and metal alloys (comparable to Stellite,, WC/Co |
| HVOF – high-velocity oxygen fuel spraying, coating thickness 100 to 500 μm, bond strength > 80 MPaSurface | – | – | – | – | WC/Co, WC/Co-Cr, WC/Ni, WC/NiCr, WC/NiCrBSiFe, Cr2C3/NiCr |
| APS – atmospheric plasma spraying, coating thickness 200 to 1,000 μm, bond strength 20 to 50 MPaSurface | – | – | – | – | Al2O3, TiO2, Al2O3/TiO2, Cr2O3, Cr2O3/TiO2, ZrO2/MgO, ZrO2/Y2O3 |
| EAWS – wire flame spraying (electric arc wire spraying), coating thickness 200 to 5,000 μm,Surface | – | – | – | – | Cu, Mo, NiCr, NiCrMo, NiCrAIY |
| PVD/PACVD coatings (e.g. MegaTiN, DiExtra, DiaPlus, HardSilk, HardTribo, UltraImpact EXCELL,Surface | – | – | – | – | coated tools made of cemented carbide and steel |
| CVD coatings (TiC/TiN), also interior coating of surfacesSurface | – | – | – | – | TiC/TiN |
| Joining/bonding of cemented carbide to carrier materials: soldering, adhesive bonding,Joining | – | – | – | – | Cemented carbide, Steel |
| Production of drawing tools (drawing rings, drawing dies, drawing plugs, swirl plugs etc.)Forming | – | – | – | – | Cemented carbide |
| Production of cutting tools (roller shear blades, circular knives, granulator knives etc.).Machining | – | – | – | – | Cemented carbide |
| Production of tools for stamping and forming technology (cutting rings, drawing dies, deep drawingForming | – | – | – | – | Cemented carbide |
| Production of cold forging tools for forming technology (trimming blades, reducing dies, pre- andForming | – | – | – | – | Cemented carbide |
| Production of engineered components and wear protection components (rings, sleeves, punches,Assembly | – | – | – | – | Cemented carbide, Cemented carbide-steel combinations |
| CAD-supported design, development, component engineering using structural mechanical analyses andEngineering | – | – | – | – | – |
| Testing: mechanical and physical tests (hardness, microstructure), state-of-the-art measuring andTesting | – | – | – | – | Cemented carbide |
| High-performance presses up to 20,000 kN (pressing, compacting, powder pressing and tableting)Forming | – | – | – | – | Tungsten carbide, Titanium carbide, Chromium carbide, Cobalt, Nickel |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| High-performance presses (powder pressing) | – | – | Pressing forces up to 20,000 kN | – | DURIT production facilities |
| Spray dryers | – | – | – | – | DURIT production facilities |
| Sinter-HIP systems | – | – | – | – | DURIT blank production |
| CNC-controlled grinding machines (diamond-tipped tools) | – | – | – | – | DURIT production facilities |
| Die sinking EDM systems | – | – | – | – | DURIT production facilities |
| Wire EDM systems | – | – | – | – | DURIT production facilities |
| Diamond tools for green compact machining (turning, milling, drilling, grinding) | – | – | – | – | DURIT production facilities |
Additional services
Quality
Production and processes are certified according to DIN EN ISO 9001:2015; blanks are only released after extensive mechanical and physical tests regarding hardness and microstructure. State-of-the-art measuring and testing technology ensures the final inspection of the finished products.
| Evidence | Wuppertal | Albergaria-a-Velha |
|---|---|---|
| ISO 9001 | ||
| ISO 14001 | ||
| ISO 50001 | ||
| ISO 56001 |
History
- 2002
Initial ISO 9001 certification (DURIT Metalurgia Portuguesa do Tungsténio, Lda.)
- 2006
Initial ISO 14001 certification (DURIT Metalurgia Portuguesa do Tungsténio, Lda.)
- 2021
Initial ISO 50001 certification (DURIT Metalurgia Portuguesa do Tungsténio, Lda.)