将管子或套的一端围拢或使直径减小的冲压过程称之为缩径。它通常限于可延性的材料。实际上,钢的含碳量超过了0.20%则不宜于缩径。影响缩径质量的因素很多,除了缩径材料径必须的退火以及模具表面光洁度、润滑剂和成形速度等之外,往往也会因设计不合理而使零件在制造过程中产生龟裂和撕破。今介绍五条可供参考的规则,以帮助设计一个能完好缩径的零件。 Surrounding one end of a tube or sleeve or reducing the diameter of a stamping process is called shrinking. It is usually limited to ductile materials. In fact, the carbon content of more than 0.20% of the steel is not suitable for diameter reduction. There are many factors that affect the quality of diameter reduction, in addition to the necessary diameter reduction material diameter annealing and mold surface finish, lubricant and forming speed, etc., often due to the design is not reasonable and make the parts in the manufacturing process of cracking and tearing . Here are five rules for reference to help design a fully constricted parts.