Cold formed parts
Cold forging is mass forming in which hollow as well as solid bodies can be manufactured in a multi-stage manufacturing process (multi-station presses). The material is turned into a flowing state by subjecting to high pressure. A die presses the raw work-piece through a form giving cavity having a smaller dimension. The manufacturing takes place using 4 to 6 stage presses and can hence manufacture products with complicated geometries and a high deforming degree. It can achieve high strain hardening so that work-pieces of non-alloy steel have strength measures that are otherwise given only for alloyed steel. Cold impact extrusions are primarily used in the automobile industry Advantages of cold impact extrusion.
Advantages of cold formed parts
- high dimensional accuracy
- high surface quality
- continuous fibre orientation by changing form
- efficient procedure for mass production
Applications
- Sleeves
- stepped bolts
- Screws to drawing