结果表明，在旧预成型模具的基础上改进的新型模具能精确控制预成型压力，从而可以保证预成型体的尺寸精度和质量。
The results showed that the new perform mold made from the old mold could control the pressure of the perform, so that the perform could have exact dimension and good quality.
国产新型塑料模具钢主要有预硬钢、时效硬化钢、淬火——回火钢、冷挤压成型模具钢、耐蚀钢等类型。
The new domestic - developed plastic mould steels include prehardening steel . age hardening steel, quenching-tempering steel, cold -forming steel, and anti - corrosion steel, etc.
国产新型塑料模具钢主要有预硬钢、时效硬化钢、淬火——回火钢、冷挤压成型模具钢、耐蚀钢等类型。
The new domestic - developed plastic mould steels include prehardening steel . age hardening steel, quenching-tempering steel, cold -forming steel, and anti - corrosion steel, etc.
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