现在,工厂中的热处理车间,都广泛地采用硝盐作回火剂和淬火剂,消耗量很大,尤其是在大量生产的时候。因此,硝盐的节约是一椿很有意义的事情。过去我们对这个问题也没有注意到,往往把粘附在工件上的硝盐放在碱水中洗掉,让它流走。后来有一个搞回火工作的同志,想出一个办法把这些硝盐回收下来了,因而节约了很多硝盐。 Now, the heat treatment plant in the factory, extensive use of salt as a tempering agent and quenching agent, consume a lot, especially in mass production. Therefore, the saving of nitrate is a very meaningful thing. In the past we did not notice this issue, often attached to the workpiece on the salt nitrate wash off, let it flow away. Later, a comrade who worked in tempering worked out a way to recover these nitrate salts, thus saving a great deal of salt.