Cold forging

Cold forging.

Highest precision in a single operation: Cold forging

Cold forging is the process of choice when a precise result is required when using solid forging. With cold forming, a workpiece is formed at room temperature. In contrast, semi-hot or hot forging requires a temperature in the workpiece between 250°C and 700°C for the machining.

 

With cold forming, a distinction must be made between cold extrusion and cold solid forging. Cold extrusion is basically the normal and extrusion pressing of sheet metal parts or soft materials such as aluminum. With cold solid forging, prefabricated die-cast parts are pressed into shape. The changeable geometries are considerably smaller than with cold extrusion. Cold solid forging is therefore mainly used for straightening and finishing prefabricated die-cast parts. A typical example of cold solid forging are crankshafts, camshafts or gear shafts from the automotive industry.

One of the main advantages of cold forming is its low energy consumption. Since the workpiece does not have to be heated for machining, the manufacturing process is very energy-efficient. Due to the cold manufacturing process, there is no scaling of the surface, which is a further quality advantage of the workpiece.

 

However, the greatest advantage of cold or cold solid forging is the high dimensional stability of the manufactured product. The components come out of the press practically ready for installation and can be used immediately. Due to the tool steels available today, even complex components can be produced in high quality by cold forming.

Cold forming – the advantages

 

The cold extrusion presses and cold forging presses supplied by us work with pressing forces of up to 20,000 kN. In order to safely absorb and dissipate these high forces, the machine and foundation must be designed to withstand the corresponding loads. We will equip our machines with a static and dynamic mass balancing. These measures can reduce the effects of vibrations or vibration resonances to a harmless level. Two-piece cast-iron base frames are also used. These measures extend the service life of the machine and tool. The output is increased and the number of rejects reduced.

 

We will accompany the installation and installation of your cold extrusion press from the first planning discussion to the test run in your production. Thereby, we will support you in the selection of the machine and equipment, right down to detailed questions, for example about the installation site and any necessary foundations. In addition to the basic machine, we also offer a comprehensive service for extensions and additional options. With the appropriate equipment, you can exploit the full potential of your cold extrusion press. In addition, we are also happy to offer you our high-performance after-sales service. The best way to ensure that your cold solid forging and cold forging equipment is always ready for operation, is to establish a maintenance contract with us. We welcome check your machine for operational readiness at fixed intervals. Where necessary, we will replace wear parts and carry out repairs. Our service also includes the testing of your machine according to Accident Prevention Regulations (UVV). This gives you the peace of mind of knowing that you have done everything possible for the safety of your employees.

Controller for your cold extrusion press

With our Siemens S7 compatible standard solution, you are optimally equipped for all present and future challenges. Our controller offers you:

  • A drive with frequency and clock control
  • A continuous monitoring of the pressing force and envelope curve
  • Numerous options for an integrated tool protection
  • Piece counter for finished end products, strokes, used raw materials and residual material
  • Expandability through switchable sockets and interfaces
  • Remote access and data transmission

Our services for your cold forging

  • High-strength press frames in cast-iron
  • Press forces from 3000 – 20000 kN
  • Heavy-duty slide guides
  • Hydrostatic bearings
  • Motor-driven slide adjustment up to an accuracy of 1/100 mm
  • Separation of clutch and brake system
  • Circulation lubrication

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