Development and manufacturing of high-tech moulds and tools for all casting processes, from prototype to series production
KRÄMER+GREBE GmbH & Co. KG
Biedenkopf-Wallau (headquarters, manufacturing, 11,000 m² production floor)New on Amplifa
About Krämer+Grebe
KRÄMER+GREBE is a family-owned company founded in 1922 and based in Biedenkopf-Wallau that develops, designs and manufactures moulds and tools for demanding castings from prototype to series production. The product portfolio includes die casting moulds for aluminium and magnesium castings (including mega and giga castings), gravity, low-pressure and counter-pressure permanent moulds made of steel, patterns and core box tools for all sand casting processes, as well as prototype tooling, special machinery and patented core drying technology. Manufacturing is carried out on more than 20 boring and milling centres including 5-axis simultaneous machining with travel paths of up to 3 m and table loads of up to 20 t, complemented by heat treatment, assembly and an air-conditioned measuring room with optical digitisation. As a development partner, the company supports customers through simulation (casting, core process and load simulation) from concept development to series production, especially for the automotive industry, foundries, e-mobility and lightweight construction. Mobile deployment teams carry out maintenance, repair and process support with an on-site response time of 24 hours at the customer's premises.
- Site
- Biedenkopf-Wallau
- Processes
- Toolmaking for die casting (die casting moulds), Permanent mould casting tools (gravity, low-pressure, counter-pressure/CPC permanent moulds), Prototype tools and prototype components (rapid prototyping, 3D printed patterns, PEPSET process), Core drying technology (patented technology for inorganic core production), 3D-printed shot nozzles, 3D-printed blow cap (reduced tool wear), Maintenance & repair of foundry tools, Mobile deployment teams for on-site maintenance, repair, run-in and process support
- Materials
- Aluminium, Magnesium, Steel, Grey cast iron, Lightweight metal, Plastic, Special material (local use in permanent moulds), Permanent mould casting
- Certificates
- DIN EN ISO 9001, DIN EN ISO 14001, ISO 9001, ISO 14001
- Founded
- 1922
- Employees
- 120
- Industries
- Automotive industry, Foundries (die casting, permanent mould casting, sand casting), E-mobility, Lightweight construction
- 01
Design & Engineering
- 02
Simulation
- 03
Tool manufacturing (CNC)
- 04
Heat treatment
- 05
Assembly
- 06
Quality assurance
- 07
Run-in & process support
- 08
Maintenance & repair
Materials & Processes
Aluminium
Material for castings in die casting moulds, in particular powertrain and structural components.
Magnesium
Lightweight metal for die castings with the highest requirements for weight reduction.
Steel
Material for permanent moulds, mould inserts and special machinery components.
Grey cast iron
Used for prototype components and pattern equipment.
Plastic
Material for prototype components and 3D printing applications.
Permanent mould casting
Gravity, low-pressure and counter-pressure permanent moulds with cooling systems and slide techniques.
Die casting
Die casting moulds for mega and giga castings, including four-plate tool technology.
Sand casting
Core box tools for cold-box, hot-box, Croning, inorganic warm-box, core package and green sand processes.
3D printing
Printed components such as shot nozzles and blow caps for reducing tool wear.
Heat treatment
Bogie hearth and chamber furnaces for stress-relief annealing and heat treatment of mould inserts.
Core drying technology
Patented technology for improving cycle times in inorganic core production.
Locations
Biedenkopf-Wallau
DEHeadquarters, manufacturing
- Lot size
- Prototype to large-scale series
- Materials
- Aluminium, magnesium, steel, grey cast iron, lightweight metal, plastic
- More than 20 boring and milling centres incl. 5-axis simultaneous machining centre
- Spotting press REIS TUS 300-400 (3 m × 3 m, 4000 kN)
- Overhead crane systems, twin hoist 40 t/40 t
- Bogie hearth and chamber furnace for heat treatment
- Regloplas temperature control units
- Rocklinizer coating unit
- GOM ATOS IIIE in an air-conditioned measuring room
- CREAFORM Metrascan laser scanner
- More than 20 CAx workstations (CATIA, CREO, NX, SolidWorks, EUKLID)
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Toolmaking for die casting (die casting moulds)Casting | – | – | – | – | Aluminium, Magnesium, Steel (tool) |
| Permanent mould casting tools (gravity, low-pressure, counter-pressure/CPC permanent moulds)Casting | – | – | Product weight up to approx. 80kg | – | Steel (permanent moulds) |
| Casting | – | – | – | – | Various materials (not specified) |
| Prototype tools and prototype components (rapid prototyping, 3D printed patterns, PEPSET process)Casting | – | – | – | – | Grey cast iron, Steel, Lightweight metal, Plastic, Aluminium |
| Assembly | – | – | – | – | Steel |
| Core drying technology (patented technology for inorganic core production)Casting | – | – | – | – | – |
| Casting | – | – | – | – | Aluminium |
| 3D-printed shot nozzlesAdditive | – | – | – | – | 3D printing material (not specified) |
| 3D-printed blow cap (reduced tool wear)Additive | – | – | – | – | 3D printing material (not specified) |
| Engineering | – | – | – | – | – |
| Engineering | – | – | – | – | – |
| Maintenance & repair of foundry toolsSurface | – | – | – | – | Steel |
| Mobile deployment teams for on-site maintenance, repair, run-in and process supportAssembly | – | – | – | – | – |
| Inspection | – | – | – | – | – |
| Heat treatment | – | – | – | – | Steel |
10 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 5-axis simultaneous machining centre with workpiece and tool changer | – | – | Travel paths up to 3m, table load up to 20t | – | Biedenkopf-Wallau |
| Spotting press REIS TUS 300-400 | REIS TUS 300-400 | 1 | Clamping table 3m x 3m, closing force 4000 kN | – | Biedenkopf-Wallau |
| Temperature control unit | Regloplas | – | – | – | Biedenkopf-Wallau |
| Chamber furnace (stress-relief annealing, heat treatment, welding repairs) | – | – | – | – | Biedenkopf-Wallau |
| Overhead crane systems (twin hoist 40t/40t) | – | – | up to 40 t lifting capacity | – | Biedenkopf-Wallau |
| Coating unit | Rocklinizer | – | – | – | Biedenkopf-Wallau |
| Bogie hearth furnace for heat treatment | – | – | – | – | Biedenkopf-Wallau |
| Optical digitisation system GOM ATOS IIIE | GOM ATOS IIIE | – | – | – | Air-conditioned measuring room, Biedenkopf-Wallau |
| Mobile laser scanner CREAFORM Metrascan | CREAFORM Metrascan | – | – | – | Biedenkopf-Wallau |
| Vans for delivery and transport | – | Various | – | – | Biedenkopf-Wallau |
Additional services
Reference customers
Quality
Quality assurance is performed in an air-conditioned measuring room with optical digitisation (GOM ATOS IIIE) and a mobile CREAFORM Metrascan laser scanner; relevant areas are measured 100% and reported using false-colour representation. The company operates in accordance with the guidelines of DIN EN ISO 9001 and DIN EN ISO 14001.
| Evidence | Biedenkopf-Wallau |
|---|---|
| ISO 9001 | |
| ISO 14001 |
History
- 1922
Fritz Krämer founds the pattern and machine factory
- 1926
Relocation to Wallau
- 1935
Renamed Meissner & Krämer
- 1942
Fritz Krämer and Ludwig Grebe found Krämer+Grebe
- 1953
Completion of the foundry hall
- 1972
Dietrich Grebe becomes managing director
- 1980
Move to Ludwig-Grebe-Straße
- 1981
Pattern making becomes an independent business
- 2000
Katrin Grebe becomes managing director
- 2008
Die casting expands the product portfolio
- 2013
Construction of the new die casting hall
- 2019
Patent for core drying technology
- 2022
100 years of tool and mould making
- 2023
Development of the 3D-printed blow cap
- 2024
Photovoltaic system commissioned
- 2025
Series-ready four-plate tool for die casting demonstrated on a 5,700-tonne machine