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问: (一)保护氧氛在普通工厂以采用那一种为佳?如何产生?用CO/CO_2-N_2的如何? (二)吸收剂及干燥剂用那些东西最恰当? (三)在整个保护气氛发生器中气流的计算用什么方式?如何调整各处的压力? (四)设计时的主要参考资料及数值的依据有那些?请为介绍。重庆郑光宇答: (一)采用保设性气氛时主要应考虑工件的材料及热处理的温度。如不锈钢中含铬很多,在高温下不但CO_2及H_2O可能使之氧化,即CO对之亦有氧一般工厂中处理碳钢时,CO/CO_2+N_2类气氛是很合
Q: (1) What is the best way to protect the oxygen atmosphere in a typical factory? How to produce CO 2 / N 2? (2) Is it most appropriate for the absorbent and the desiccant to be used? (3) How to adjust the pressure everywhere? (D) the design of the main reference and numerical basis for those? Please introduce. Chongqing Zheng Guangyu A: (A) the use of a preservable atmosphere should mainly consider the workpiece materials and heat treatment temperature. If the stainless steel contains a lot of chromium, not only CO 2 and H 2 O may be oxidized at high temperature, that is, CO also has oxygen. When the carbon steel is processed in the factory, the atmosphere of CO / CO 2 + N 2 is very close