处理不同成份和特性的钢,特别是工具钢的高真空炉已在工业水平上得到推广。至今,所得到的实验结果充分证明使用这种炉子是合算的。这种方法最令人感兴趣的结果之一是:由于热处理引起的尺寸变化跟常规方法相比是极为有限的,而且用这种方法淬火的钢零件有完全清洁的表面不需要进 High vacuum furnaces for processing steels of different compositions and characteristics, particularly tool steels, have been promoted at the industrial level. So far, the experimental results obtained show that it is cost-effective to use such a furnace. One of the most interesting results of this method is that dimensional changes due to heat treatment are extremely limited compared to conventional methods and that the surfaces of quenched steel parts hardened in this way do not need to be fully cleaned