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在塑料注射成型过程中, 热塑性塑料, 由于结晶引起的体积变化, 强大的内应力, 塑件中冻结的较大残余应力, 强分子取向等因素, 因此与热固性塑料相比, 收缩率更大. 缩水率宽,方向性明显. 此外, 成型后的收缩率, 退火或湿度 …
一, analysis of the reasons for the fracture of the tie rod of the injection molding machine Fatigue failure. The working process of the injection molding machine is a process of alternating stress, 因此任何引起应力集中的因素都可能导致疲劳失效. 喜欢: 轴径变化较大的台阶. 缺乏圆角, 底切, 等等. at …
The mold meets the requirements of working conditions Wear resistance When the blank is plastically deformed in the mold cavity, 它沿着腔体表面流动和滑动, 引起型腔表面与毛坯之间的剧烈摩擦, 这会导致模具因磨损而失效. 所以, the wear resistance of the material is one …