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经数百次小炉试验和车间生产试验表明,工业氮(纯度为两个九)加微量石油液化气直通淬火炉的氮基气氛,可使轴承钢(GCr15)零件无氧化脱碳,且气氛安全、不燃不爆、易于操作、碳势可控、经济节约。一、气氛制备原理气氛由工业氮气和石油液化气按一定比例混合后直接通入淬火炉内经裂解和反应而得。原料气的氮分子式为(1-a)aN_2(a为氮的纯度);石油液化气分子式为CmHn(饱合烷烃和烯烃)。混合气
Hundreds of trials of small furnaces and workshops showed that industrial nitrogen (with a purity of two nine) plus a trace amount of liquefied petroleum gas through the nitrogen-based atmosphere of the quenching furnace can deoxidize the bearing steel (GCr15) part without oxidizing and the atmosphere Safe, non-flammable and explosive, easy to operate, carbon potential controllable and economical. First, the atmosphere preparation principle Atmosphere by the industrial nitrogen and liquefied petroleum gas by a certain percentage of the mixture directly into the quenching furnace after cracking and reaction derived. The raw material gas nitrogen formula (1-a) aN_2 (a nitrogen purity); liquefied petroleum gas formula CmHn (saturated alkanes and olefins). mixed gas