Semi-solid backward extrusion method for copper alloy shaft sleeve part

The invention discloses a semi-solid backward extrusion method for a shaft sleeve part, and belongs to the field of semi-solid forming. The semi-solid backward extrusion method comprises the followingsteps of heating a semi-solid blank prepared from an alloy material by an SIMA method to a temperature higher than a solidus temperature, and preserving heat; then, putting the semi-solid blank intoa preheated die for backward extrusion forming, and maintaining the pressure; performing water quenching on the backward-extruded part; and finally, performing short-time solid solution aging heat treatment. The semi-solid backward extrusion forming method is adopted, so that the production efficiency is high, the energy consumption is low, the product quality is high, the material utilization rate is high, and mechanical and automatic production is easy to realize. 本发明公开一种轴套零件半固态反挤压方法，属于半固态成形领域。本发明所述方法为：将合金材料经过SIMA法制得的半固态坯料加热至固相线温度以上并保温，然后放入预热的模具内进行反挤压成形并保压，对反挤压后零件进行水淬，最后进行短时固溶时效热处理。本发明所述方法采用半固态反挤压成形的方法，生产效率高、能耗低、产品质量