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1.概述 PX88日本大同塑胶模具钢,特别改善焊接性的通用塑料模具用钢,P20改良型,经硬化及回火至约HB290-330.以焊裂开敏感性低的合金成份设计,大幅度改善焊接性能.
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2..淬火温度 冷却方式.
回火温度与硬度对照:180℃-225℃-300℃-570℃-610℃
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3.化学成份(%) 碳C :0.40
矽Si :0.30
锰Mn :1.45
铬Cr :2.00
钼Mo :0.20
编辑本段
4.用途 大型优质长期生产塑胶模钢,适合制造如电视机壳、雪柜、洗衣机、水桶等