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据西德报导,一副四缸缸体的压铸模,价值超过一百万马克,因此对模具使用过程中产生的热疲劳、冲蚀、裂纹、表面压伤等要有充分的预防措施。设计大型而复杂的模具,要遵循以下几个准则:(1)模具结构必须结实,模壳要有足够的刚性和强度,最好用有限元法验算一下;(2)型腔部分的零件尽量采用镶块,长的零件更应如此;(3)模具中的易损件要便于装拆和更新;(4)采用最可靠的钢材制造型腔和型芯并充分注意热处理工艺,使钢材达到最佳韧性和硬度;(5)滑动的零件热处理后要作表面附加处理,确保不致粘模或咬死:(6)有良好而合理的模具冷却系统,自动
According to West Germany, a four-cylinder block die-casting mold with a value of more than one million marks has sufficient precautionary measures against thermal fatigue, erosion, cracks and surface crushing caused during use of the mold. Design large and complex mold, to follow the following guidelines: (1) the mold structure must be strong, the mold shell to have sufficient rigidity and strength, it is best to use FEM calculations; (2) parts of the cavity as much as possible (3) The wearing parts in the mold should be easy to assemble and disassemble and update; (4) The most reliable steel manufacturing cavity and core, and pay full attention to the heat treatment process to achieve the steel The best toughness and hardness; (5) sliding parts after heat treatment to make the surface additional treatment to ensure that not sticky die or biting: (6) a good and reasonable mold cooling system, automatic