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我厂为了解决标准件淬火质量问题,通过多方面的试验,并经过生产实践,认为3～5%的Na_2CO_3水溶液,对于减少标准件的淬火变形、开裂和软点都是十分有效的,同时还能降低成本,又能在短时间内起防锈作用。该冷却剂在使用过程中,由于当带入淬火盐,成份上会起下述变化:当带入氯化盐时,冷却能力增加,相当于碳酸钠和氯化盐的混合水溶液,但对淬火质量影响不大,约一年左右调换一次即可;而当带入钡盐时,由于BaCl_2和
In order to solve the problem of quenching quality of standard parts, our factory, through various experiments and production practices, considered that 3 ~ 5% Na_2CO_3 aqueous solution is very effective in reducing the quenching deformation, cracking and softening point of standard parts, meanwhile Can reduce costs, but also in a short period of time from the rust. During use, the composition of the coolant, when brought into the quenched salt, changes as follows: When the chlorinated salt is brought in, its cooling capacity increases, which is equivalent to a mixed aqueous solution of sodium carbonate and chloride, Quality impact is not about a year or so can be exchanged; and when barium salt into the BaCl2 and