In the design process of extrusion die, in addition to the design requirements of forging die, the following requirements should also be met.<br>(1) The material of the working parts of the mold needs to be selected according to the working temperature.<br>(2) In the design of compound die, the influence of size change caused by temperature on the preloading effect should be considered.<br>(4) In order to ensure the dimensional accuracy of forging products, it is necessary to keep the mold temperature within a certain range, so preheating and cooling devices should be considered.<br>
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