我厂原生产遵义-35拖拉机承担的16个总成中,调质件占绝大多数,其中约50％是小截面(8～12毫米)零件,多采用“白坯”调质(即粗加工后调质)和锻件调质的办法,而这两种方法都有其缺点:一是调质后再加工会切去热处理得到的良好外层金属,二是调质后钢的硬度(一般在HRC23～35间)较原材料的高, I plant the original production of Zunyi -35 tractor bear 16 assembly, conditioning the majority of parts, of which about 50% of small cross-section (8 ~ 12 mm) parts, and more use of “white billet” quenching After processing, quenching and tempering) and forging quenching and tempering methods, and these two methods have their shortcomings: First, after quenching and then will be cut off the heat treatment to get a good outer layer of metal, the second is the quenched and tempered steel hardness (generally HRC23 ~ 35) than the high raw materials,