冷摆碾用模具关键零件预处理工艺分析

ANALYSIS OF THE PRE-HEAT-TREATMENT PROCESS ON THE DIES OF THE COLD ROTARY FORGING

通过预处理工艺，可有效控制冷摆碾模具钢的晶粒度，改善碳化物分布状况，为终处理做组织上的准备，有利于模具强韧性及使用寿命的提高。

After pre-heat-treatment process, the grain-size of the dies of Cold Rotary Forging can be effectively controlled, and the distribution of corbide can be well improved. The pre-heat-treatment process gets the structure ready for the last-heat-treatment, gets the high strength and toughness of the dies, and is benefical to the service life of the dies of Cold Rotary Forging.