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“发兰淬火剂”发表后(见《金属热处理》1978年第6期),收到不少读者的来信,提出了一些问题,现作如下说明:由于我厂产品单一,发兰淬火剂我们只使用于45钢及08F 钢氰化淬火,并且产品的形状较简单,壁厚较均匀,故未作回火处理,热处理引起的应力是在皂化及上油等工序中加以部分消除,因此,产品在使用中未曾发现断裂现象。关于发兰淬火剂中的水量只要达到过饱和就行了,水量的多少影响不大。所谓过饱和溶液,即将各种硝盐按比例混和后放入淬火冷却池内,加水搅拌(水温宜30℃左右),使之溶解后底部分仍少量硝盐的结晶存在。
After the release of “hair blue quenching agent ” (see “Metal Heat Treatment” No. 6, 1978), received a lot of readers’ letter, put forward some questions, the following description: As a single product of my plant, Agent We only used in 45 steel and 08F steel cyanide quenching, and the shape of the product is relatively simple, the wall thickness is more uniform, so no tempering treatment, heat treatment stress is saponification and oiling process to be partially eliminated, Therefore, the product was not found in use fracture phenomenon. On the blue quenching agent in the water as long as the supersaturated on the line, the amount of water has little effect. The so-called supersaturated solution, a variety of salt is about to be mixed in proportion after the quench cooling pool, add water, stirring (water temperature should be about 30 ℃), so that after the dissolution of the bottom part of the salt is still a small amount of crystallization.