Backward extrusion
Backward extrusion
(OP)
What type of steel is the best for making die used for backward extrusion of copper?
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RE: Backward extrusion
RE: Backward extrusion
RE: Backward extrusion
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Backward extrusion
RE: Backward extrusion
Typical tool materials for die inserts are D2, M2, and M4. They are hardened and tempered to hardness of 58-64 HRC. Cemented carbides are also used, as are a range of new tool steels specifically developed for this process that have improved fracture toughness (resistance to chipping) and fatigue strength. Stress rings are made from hot work tool steels like H11 or H13 heat treated to 45-50 HRC. Punches usually start with M2 or M4 at 62-66 HRC, although cemented carbides are also commonly used.