凸轮靠模的改进陈安岳（华东船舶工业学院工厂镇江２１２００３）图８图９为脆性材料，在铜塑性变形流动时，它几乎不发生塑性变形而流动，这样如果由于图９中挤压坯前端１部分太短而使铜钨—铜接合面在挤压中处于图７中Ｆ—Ｆ面以上、变形区４－４以内，则由于铜的变形流... Figure 3 Figure 8 Figure 9 is a brittle material, copper plastic deformation flow, it almost does not occur plastic deformation and flow, so if the extrusion billet front end 1 in Figure 9 (East China Institute of Shipbuilding Factory, Zhenjiang 212003) Part is too short to make the copper tungsten-copper joint surface in the extrusion in Figure 7 F-F above the deformation zone 4-4, due to copper deformation flow ...