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可控气氛渗碳是一种新的热处理工艺,是将石油液化气和空气按一定比例混合后,通过发生器內经过高温催化反应,生成一种具有一定碳位的吸热型保护气体,使齿轮在加热过程中不氧化、不脱碳。将这种保护气体通入渗碳炉內作为稀释气体,再加入1～2％比例的丙丁烷石油液化气(亦称富化气),从而提高炉气碳位,使渗碳齿轮表面增碳。渗碳气氛中的碳位是可以控制的,所以叫它可控气氛渗碳。采用这种热处理工艺,它不但能保证齿轮表面
Controllable atmosphere carburizing is a new heat treatment process, the liquefied petroleum gas and air are mixed according to a certain ratio, through the high temperature catalytic reaction in the generator to generate a certain carbon endothermic shielding gas, so that Gear in the heating process is not oxidation, not decarbonization. The protective gas is introduced into the carburizing furnace as a diluent gas, and then 1 to 2% of propane petroleum liquefied gas (also referred to as rich gas) is introduced into the carburizing furnace to raise the carbon level of the furnace gas and increase the surface of the carburized gear carbon. Carburizing atmosphere in the carbon position can be controlled, so called controlled atmosphere carburizing. Using this heat treatment process, it not only guarantees the gear surface