The vacuum gas quenching process of ring die of pellet mill is analyzed and discussed based on selection of heat treatment equipment, setting of process parameters, comparison of gas quenching cooling medium and control of deformation amount and others.

• 摘要对饲料制粒机环模的真空气淬工艺，从热处理设备的选用、工艺参数的设置、气淬冷却介质的比较及变形量的控制等多个方面进行了分析和讨论。