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我厂5CrMnMo钢制的各种工具在热处理时一直存在着氧化脱碳问题。曾采用过木炭保护,但效果不佳,寿命低,甚至影响我厂生产。为了解决这一关键,车间组成了三结合小组,试验成功了用热涂硼酸的方法,来防止工件氧化脱碳。其工艺为:把工件放入850℃的炉中,预热15～20分钟,这时工件表面温度达400～500℃,取出工件,放入硼酸槽内滚涂上一层均匀的硼酸。待涂在工件
I plant 5CrMnMo steel tools in the heat treatment has always been the issue of decarbonization. Had used charcoal protection, but poor results, low life expectancy, and even affect my factory production. In order to solve this key, the workshop formed a three-in-one group to test the successful application of boric acid to prevent the workpiece from oxidative decarburization. The process is as follows: the workpiece is placed in an oven at 850 DEG C and is preheated for 15-20 minutes. At this time, the surface temperature of the workpiece reaches 400-500 DEG C, the workpiece is taken out, and the boric acid bath is placed in a layer of uniform boric acid. To be painted on the workpiece