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我厂所用的热挤模具均采用3Cr2W8V钢制造的。考虑到模具工作条件,要求具有较高的高温强度。3Cr2W8V钢模具的热处理规范为:一次预热450℃ 2分/毫米→二次预热850℃ 0.3～0.4分/毫米→淬火加热 1140～1150O℃ 0.3分/毫米→油冷(油温<80
Hot extrusion die used in our factory are made of 3Cr2W8V steel. Taking into account the working conditions of the mold, requires a high temperature strength. 3Cr2W8V steel mold heat treatment specifications are as follows: a preheat 450 ℃ 2min / mm → secondary preheating 850 ℃ 0.3 ~ 0.4min / mm → Quenching and heating 1140 ~ 1150O ℃ 0.3min / mm → oil cooling (oil temperature <80