Influence of Forming Conditions on Loads in Split-forging

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AbstractMore complicated parts having gear teeth, cylindrical grooves, or long branches are manufactured in cold forging. Nowadays, more precise dimensions are required for these parts. Reduction in forming load is a key factor to obtain more precise parts in cold forging, because high load causes the elastically large deformation of tools and machines. Furthermore, this reduction in forming load contributes to longer tool life. In this paper, the loads of split-forging including split-backward extrusion and split-heading to produce the branched parts are estimated under different conditions such as punch sizes, punch geometries, and lubricants.

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