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一、前言ZG55CrNi2MoVA合金耐热铸钢是我厂为某无缝钢管厂承制的管轧机的重要铸件——穿孔机导盘(以下简称导盘).其牌号是根据图纸提供的化学成分由笔者命名的,在国内外的材料标准中均未查到此成分和牌号;我厂也是首次承接这种材料铸钢件的制造.所以,既无资料可以借鉴,又无实践经验,给导盘的投产带来了较大的困难,其中,要了解材料的特性,热处理是关键环节.为此,在导盘投产前,必须做一
I. Introduction ZG55CrNi2MoVA alloy heat-resistant cast steel is our factory for a seamless steel pipe mill tube mill system of important castings - perforator guide (hereinafter referred to as the guide plate.) Its grade is based on the drawings provided by the chemical composition of the author Named in the material standards at home and abroad are not found in the composition and grades; I plant is also the first to undertake the manufacture of steel castings of this material. Therefore, neither information can learn from, but no practical experience to the guide Put into operation has brought greater difficulties, of which, to understand the characteristics of the material, heat treatment is the key link.To this end, before the guide plate into operation, we must do a