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我厂产品东-20拖拉机三、四挡以及高低挡拨头的局部淬火,原来的热处理工艺是在电极盐炉内进行加热,加热方式如图1所示。但有以下缺点:
I plant products East -20 tractor third and fourth gear and the level of the first part of the gearhead quenching, the original heat treatment process is heated in the salt furnace, the heating method shown in Figure 1. But the following disadvantages: