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一、前言真空渗碳是国际上七十年代迅速发展起来的热处理新工艺。由于它是利用真空电阻炉在负压下进行气体渗碳,因而具有渗碳速度快、质量好、变形小、便于自动控制、节省能源、没有污染等优点,受到国内外的普遍重视。目前国外的真空渗碳一般是在双室式的真空渗碳炉内进行。国内也有厂家在研制类似的设备。它的致命弱点是结构复杂、造价昂贵、
I. Introduction Vacuum carburizing is a rapidly developed new heat treatment process in the seventies in the world. Because it is the use of vacuum resistance furnace for gas carburizing under negative pressure, it has the advantages of carburizing speed, good quality, small deformation, easy automatic control, energy saving, no pollution, etc., which are widely valued at home and abroad. At present, vacuum carburizing abroad is generally carried out in a two-chamber vacuum carburizing furnace. There are also manufacturers in the country to develop similar equipment. Its fatal weakness is complex structure, high cost,