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一、真空热处理的特点 真空热处理技术是目前世界上先进的热处理技术之一,因此在国际上得到了普遍的发展,在国内也得到了越来越多的使用。 由于真空热处理具有表面无氧化及净化、脱气、加热速度慢等特点,所以更加适合于对模具进行最终热处理。经真空热处理后的模具变形小、机械性能优良、表面光洁无氧化,使用寿命有较大幅度的提高。例如用来制造不锈钢螺丝、高强度螺栓的Cr12MoV钢制的滚丝模,经真空处理后,比用盐浴热处理的同样模具使用寿命提高3～4倍。用W6Mo5Cr4V钢制造的十字槽螺丝成形冲头,用真空热处理的可比盐浴热处理的使用寿命提高约2倍。此外,真空热处理
First, the characteristics of vacuum heat treatment Vacuum heat treatment technology is currently one of the world’s advanced heat treatment technology, it has been in the international development in general, has also been more and more used in the country. As the vacuum heat treatment with the surface of the non-oxidation and purification, degassing, slow heating and other characteristics, it is more suitable for the final heat treatment of the mold. After the vacuum heat treatment of small deformation mold, excellent mechanical properties, smooth surface without oxidation, the service life of a more substantial increase. For example, used to make stainless steel screws, high strength bolts Cr12MoV steel rolling dies, after vacuum treatment, heat treatment than salt bath with the same mold life increased by 3 to 4 times. With W6Mo5Cr4V steel cross recessed screw forming punch, with a vacuum heat treatment comparable salt bath heat treatment life of about 2 times. In addition, vacuum heat treatment