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由于我厂产品的发展,对一些金属材料和零件,用常规的热处理方法已不能满足越来越高的要求。1980年我们自行设计制造了一台采用石墨布加热,石墨毡与耐火纤维毡隔热的油淬气冷真空热处理炉(见本刊1982第一期封面照片)。1980年11月的技术鉴定会上,受到好评,鉴定结论认为,主要技术指标达到目前国外同类产品水平,可用于工具钢、模具、轴承钢、合金钢、弹簧钢和不锈钢等的光亮淬火,亦可用于部分零件的真空回火。
Due to the development of our factory’s products, for some metal materials and parts, the conventional heat treatment methods have been unable to meet the higher and higher requirements. In 1980, we designed and manufactured an oil-quenched and cold-vacuum heat-treatment furnace which was heated by graphite cloth and insulated by graphite felt and refractory fiber mat (see the cover photo of the first issue of 1982). At the technical appraisal meeting held in November 1980, it was well received. The appraisal concluded that the main technical indexes have reached the level of similar foreign products at present and can be used for the bright quenching of tool steel, mold, bearing steel, alloy steel, spring steel and stainless steel, etc. Can be used for vacuum tempering parts.