滴注式快速气体渗碳新技术

用高炉压、大剂量煤油滴注进行气体渗碳，所形成的渗碳气氛碳势可达2.0%-2.6%，工件表面无碳黑沉积，渗碳层中碳化物的形貌呈颗粒状，渗层的显微硬度高达900Hv0.1。用新的渗碳技术，可加快渗碳速度、提高渗碳的效率、减小渗碳变形，并且渗层的脆性及耐磨性得到了改善。

New Process of Drop FeedGas Carburizing with High Rate

A new process of drop-feed gas carburizing with enhanced pressure and mass flow has been described. The carbon potential of the atmospheres obtained by the new process was 2.0%～2.6%C.No carbon deposition was found on the surface of works.The hardness of surface layer dispersed a mass of finely-granular carbides was HV0.1900. By using of the new process,the rate of carburizing was increased,and the distortion of the works were decreased,while the wear-resistance and brittleness were improved.