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业已确认,真空炉可用于钢、有色金属和超耐热合金的热处理中。并且在一定范围内,还可用于高速钢的真空淬火(在截面尺寸不是很关键的情况下),但较大截面的高速钢(如M_2高速钢)不适用1.5～2巴的普通气压淬火设施,因为它会产生碳化物沉淀,硬度也低于最高硬度。为此研制了一种高压气体真空淬火炉,从而使大截面高速钢能进行真空淬火以得到淬硬。这项技术已研究了以5巴的气体压力淬火76～114mm直径的高速工具钢,并以冶金学和成本因素将该工艺与传统的盐浴处理工艺进行了直接比较。试验用VTC型真空炉是由易卜生公司
It has been confirmed that vacuum furnaces can be used in the heat treatment of steels, non-ferrous metals and superalloys. And within a certain range, but also can be used for high-speed steel vacuum quenching (in the cross-sectional size is not critical), but the larger cross-section of high-speed steel (such as M_2 high-speed steel) does not apply 1.5 ~ 2 bar ordinary pressure quenching facilities , Because it will produce carbide precipitation, the hardness is lower than the highest hardness. To this end developed a high-pressure gas vacuum quenching furnace, so that a large section of high-speed steel can be vacuum quenched to get hardened. This technique has been studied for quenching 76-114 mm diameter high speed tool steels with a gas pressure of 5 bar and a direct comparison of the process with the traditional salt bath treatment process with metallurgical and cost considerations. The VTC-type vacuum furnace for testing is manufactured by Ibsen Corporation