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大连全属冷成型模具厂近年来试验成功了一种剖分型的六角螺母组合套模,经23个省市和80多个标准件厂试用并鑑定,使用寿命均比一般的Cr12型冷作模具钢制作的模具使用寿命提高几十倍,甚至上百倍,比国外同类型材料的模具提高一至两倍,技术经济效益极为显著,产品质量稳定,可节省大量优质合金工具钢,大大减少了工人调换模具的时间,改善了工人的劳动条件,深受操作工人的欢迎。剖分六角型螺母组合模具,是选用硬质合金材料,采用剖分结构消除六角处的应力集中,再加上预应力套选材得当,紧配间隙合理,使模具的使用寿命比整体模芯式有明显提高,许多操作工人不愿再用原Cr12MoV钢制作的模具。他们反映:用剖分型结构硬质合金模具,不仅产品质量好,尺寸不易
Dalian is a cold forming mold factory in recent years successfully tested a split type hexagonal nut set of sets of molds, the 23 provinces and cities and more than 80 standard factory trial and identification, the life expectancy than the average Cr12-type cold work Die steel mold life increased by several times, or even hundreds of times, than the same type of foreign material to increase one to two times the mold, the technical and economic benefits are extremely significant, the product quality is stable, can save a lot of quality alloy tool steel, greatly reducing the workers Change the mold time, improve the working conditions of workers, welcomed by the operatives. Split hexagonal nut combination mold is the choice of cemented carbide material, the use of split structure to eliminate the stress concentration at the hexagonal, coupled with prestressed sleeve properly selected, tight with a reasonable gap, the mold life than the overall core Significantly improved, many workers are reluctant to use the original mold made of Cr12MoV steel. They reflect: the use of split structure carbide mold, not only good product quality, size is not easy