Manufacturer of ready-to-use wear, engineering and drawing parts made of tungsten carbide (hard metal) since 1980.
Carbidur Hartmetall AG
Keltern-Dietlingen (Headquarters: Production, Administration, Sales)New on Amplifa
About Carbidur Hartmetall AG
Carbidur Hartmetall AG, based in Keltern-Dietlingen near Pforzheim, is a manufacturer of hard metal products (tungsten carbide) and produces ready-to-use wear, engineering and drawing parts for industry. The portfolio includes semi-finished products such as round and rectangular bars, plates and balls from stock, drawing dies made of solid hard metal or shrink-fitted with a steel jacket or steel core, hard metal rolls, rings up to 170 mm, blanks for circular saws and circular knives, cutting punches and bushings for punching and bending technology, EDM blocks, valve dies and drilling bushings for the automotive industry as well as adjusting joints with a tungsten carbide core in series production. Shaping is done as raw sintered parts to drawing or finish-ground ready for use (tolerance example ±0.01 mm); working surfaces are highly polished. The range extends from ultra-fine-grained to extra-coarse-grained grades with cobalt or nickel binder, supplemented by the in-house development Carbidur 977, which is insensitive to water and salt. Customers come from industries such as the automotive industry, toolmaking, punching and bending technology, tube and wire manufacturing, paper processing, chemical plant engineering, environmental technology, aerospace and the electronics industry; deliveries are made worldwide, complemented by an online shop and material analysis services.
- Site
- Keltern-Dietlingen
- Processes
- Manufacture of ready-to-use wear, engineering and drawing parts made of hard metal, Raw sintered shaping according to drawing (hard metal), Finish grinding of hard metal parts, High-gloss polishing of working surfaces (drawing dies), Shrink-fitting of hard metal with steel jacket/steel core (drawing dies), Manufacture of hard metal blanks for circular saws and circular knives, Manufacture of cutting punches, cutting bushings, cutting inserts and die punches according to, EDM of hard metal blocks (EDM blocks for toolmaking)
- Materials
- Carbidur grade 931 (ultra-fine/submicron, K06-K10, 6% Co, 93% WC), Carbidur grade 881 (ultra-fine/submicron, K10-K30, 12% Co, 88% WC), Carbidur grade 932 (fine grain/micrograin, K10-K20, 6.5% Co, 93% WC), Carbidur grade 902 (fine grain/micrograin, K20-K40, 10% Co, 90% WC), Carbidur grade 852 (fine grain/micrograin, K30-K50, 15% Co, 85% WC), Carbidur grade 953 (medium grain/medium, K06, 4% Co, 96% WC), Carbidur grade 943 (medium grain/medium, K10/G05, 6% Co, 94% WC), Carbidur grade 933 (medium grain/medium, K20/G10, 6.7% Co, 93% WC)
- Certificates
- DIN/ISO 9004 (quality management guideline, not certifiable), DIN/ISO 9004 (Quality Management Guideline)
- Founded
- 1980
- Industries
- Automotive industry, Toolmaking, Punching and bending technology, Cutting tools, Tube and wire manufacturing, Paper processing industry
- 01
Consulting and material selection (grade selection according to application)
- 02
Development and design according to drawing
- 03
Shaping as raw sintered parts to drawing
- 04
Finish grinding / high-gloss polishing of working surfaces / EDM
- 05
Shrink-fitting of hard metal with steel jacket or steel core (drawing dies)
- 06
Quality assurance and material analysis (XRF, hardness, TRS, density,
- 07
Stock keeping and shipping from stock / online shop
Locations
Keltern-Dietlingen
DEProduction, Administration and Sales (Headquarters)
- Materials
- Hard metal (tungsten carbide) in grades from ultra-fine to extra-coarse, nickel binder, steel composite
- Hard metal processing machines
- Machine fleet (new acquisition 2008)
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of ready-to-use wear, engineering and drawing parts made of hard metalEngineering | – | – | – | – | Hard metal (tungsten carbide) |
| Raw sintered shaping according to drawing (hard metal)Additiv | – | – | – | – | Hard metal (tungsten carbide) |
| Finish grinding of hard metal partsSurface | ±0.01 mm (example: O.D. 17.92-0.01 x 86+0.5 mm ground) | 86 mm (example product round bar) | – | – | Hard metal (tungsten carbide), Carbidur grade 932 |
| High-gloss polishing of working surfaces (drawing dies)Surface | High-gloss polished | – | – | – | Solid hard metal, Hard metal with steel jacket, Hard metal with steel core (shrink-fitted) |
| Shrink-fitting of hard metal with steel jacket/steel core (drawing dies)Joining | – | – | – | – | Hard metal, Steel |
| Manufacture of hard metal blanks for circular saws and circular knivesMachining | – | – | – | – | Hard metal (tungsten carbide) |
| Manufacture of cutting punches, cutting bushings, cutting inserts and die punches according toMachining | – | – | – | – | Hard metal (tungsten carbide) |
| EDM of hard metal blocks (EDM blocks for toolmaking)Surface | – | – | – | – | Hard metal (tungsten carbide) |
| Manufacture of hard metal rings up to 170 mm (raw sintered or ground)Machining | – | 170 mm (diameter of rings) | – | – | Hard metal (tungsten carbide) |
| Manufacture of valve dies and drilling bushings for the automotive industryMachining | – | – | – | – | Hard metal (tungsten carbide) |
| Manufacture of adjusting joints with tungsten carbide inner part (automotive, series production)Engineering | – | – | – | – | Tungsten carbide (hard metal), Carbidur 977 |
| Material analysis of hard metal: chemical analysis via X-ray fluorescence analysis (XRF)Testing | – | – | – | – | Hard metal (tungsten carbide) |
| Property analysis of hard metal: hardness determination according to Vickers and Rockwell,Testing | – | – | – | – | Hard metal (tungsten carbide) |
| Microstructure analysis of hard metal: WC grain size and distribution, porosityTesting | – | – | – | – | Hard metal (tungsten carbide) |
| Stock keeping and delivery of semi-finished products for cutting tools, milling cutters, drillsMachining | – | – | – | – | Hard metal (tungsten carbide) |
| Development and designEngineering | – | – | – | – | – |
| Delivery of standard parts for toolmaking and punching (hole punches, cutting bushings,Machining | – | – | – | – | Hard metal (tungsten carbide) |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Hard metal processing machines (acquired 1988, specification unknown) | – | – | – | 1988 | Pforzheim (Untere Augasse 41) |
| New machines (acquired 2008, specification unknown) | – | – | – | 2008 | Keltern-Dietlingen |
Additional services
Reference customers
Quality Management
Carbidur Hartmetall AG works according to the quality management guideline DIN/ISO 9004 with a binding quality assurance manual. The testing equipment includes X-ray fluorescence analysis for chemical analysis, hardness testing according to Vickers and Rockwell, TRS transverse rupture strength, density and microstructure analysis (WC grain size, porosity).
| Evidence | Keltern-Dietlingen |
|---|---|
| DIN/ISO 9004 (Quality Management Guideline) |
History
- 1980
Foundation of the company and registration in the commercial register of Pforzheim as a GmbH; specialization in ready-to-use hard metal tool parts for wear, forming and punching technology.
- 1984
Occupancy of the operating building at Untere Augasse 41 in Pforzheim with over 400 sqm of production space; investment in new processing machines.
- 1985
Start of stock keeping of hard metal raw bars (round and flat) for short-term customer delivery.
- 1986
Start of commercial vocational training.
- 1987
Horst Walter continues to run the company as sole shareholder and managing director.
- 1988
Breakthrough in the export business: first hard metal parts to South America, the Far East and Europe.
- 1989
First presentation of the hard metal products at AMB in Stuttgart.
- 1999
First online presence on the Internet.
- 2001
Presentation of the new homepage and online shop; 1,000th online visitor after 4 months.
- 2003
10,000 visitors on the homepage.
- 2004
Planning of a new production building with administration in Keltern-Dietlingen in the industrial park.
- 2005
25 years of company history; move into the new building in Keltern-Dietlingen; rebranding to Carbidur Hartmetall GmbH & Co. KG.
- 2008
Purchase of new machines.
- 2010
Anniversary: 30 years of company history.
- 2012
Extension of the company building.
- 2017
Conversion to Carbidur Hartmetall AG as of 01.10.2017; visit by State Secretary Katrin Schütz as part of an MIT discussion forum.
- 2020
Series introduction of an adjusting joint with tungsten carbide core at a car manufacturer in Baden-Württemberg; DBGM 202021001380, German Patent No. 10 2021 01 966, European Patent No. EP4074950.
- 2023
Further car models with the improved adjusting joint go into series production; development of the new material Carbidur 977.