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我厂生产的地质钻探工具,常用合金结构钢制造,要求调质处理,淬火时易开裂,如40Cr、40Mn2钢工件约有5～10%开裂;用油淬火则油耗量大,每t产品平均消耗油23kg,且油易老化,淬火质量不稳定。为此,我们进行了聚乙烯醇水溶液淬火生产性试验,并于1982年正式投产。(1)淬火介质的浓度钻具常用中碳铬、锰及钼钢,如40Cr、40Mn2、45Mn、45Mn2、42CrMo、40CrMaMo、30CrMnSiA
I produced the geological drilling tools, alloy steel commonly used in manufacturing, requiring quenching, easy to crack quenching, such as 40Cr, 40Mn2 steel parts about 5 to 10% cracking; oil quenching is the fuel consumption, the average product of each t Consumption of oil 23kg, and easy to aging oil, quenching the quality of instability. To this end, we conducted a polyvinylalcohol aqueous quenching production test, and formally put into operation in 1982. (1) the concentration of quenching medium commonly used in carbon chromium, manganese and molybdenum steel, such as 40Cr, 40Mn2,45Mn, 45Mn2, 42CrMo, 40CrMaMo, 30CrMnSiA