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(一)在进行大流水生产的热处理作业中,淬火油槽的油温经常要升到180℃以上,致使油烟易着火成灾。在解决油温冷却的方法中,通常采用油泵循环,把油通过水冷却器进行降温冷却,然后返回油槽继续使用。此法的弊病是要附设一套费用昂贵的冷却装置,而且要消耗大量的冷却水和电能,更为可惜的是长期以来未能把油热量充分利用,白白浪费。其次在热处理作业中,零件清洗液的加热(一般60～70度),常用的是蒸汽或电加热器两种
(A) in the production of large heat treatment operations, quenching oil tank temperature often rose to above 180 ℃, resulting in smoke easy to fire disaster. In the solution to the oil temperature cooling method, usually the pump cycle, the oil through the water cooler for cooling down, and then return to the tank to continue to use. The downside of this method is to attach an expensive cooling unit and to consume a large amount of cooling water and electricity. What is even more unfortunate is that the oil and heat have not been fully utilized for a long time and were wasted. Second in the heat treatment operations, part cleaning fluid heating (usually 60 to 70 degrees), commonly used in steam or electric heater two