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冷缩是冷挤压的一种特殊形式,而且和拉丝有某些相似之处。它是近十几年发展起来的一种简单易行的少无切削工艺。特别适合于制造阶梯轴形零件。所谓冷缩就是将冷态的棒料或管料推过锥形冷
Cold shrinkage is a special form of cold extrusion, and has some similarities with the drawing. It is a kind of simple and easy cutting-edge technology developed in recent ten years. Particularly suitable for the manufacture of stepped shaft-shaped parts. The so-called cold contraction is the cold bar or tube material pushed through the cone cold