锻压技术

DK20连杆高能螺旋压力机精密模锻工艺

英文标题：Precision die forging technology using high power screw press for DK20 connecting rod

作者：詹辉

单位：南车资阳机车有限公司

分类号：TG316

出版年,卷(期):页码：2013,38(4):1-5

摘要：

针对DK20连杆锤上模锻工艺的不足，提出了在高能螺旋压力机生产线上进行精密模锻的工艺方案，描述了各工步工装设计要点，对生产中存在的问题制定了有效的解决方案。与锤上模锻工艺相比，采用中频感应加热、三道次辊锻制坯，应用油压机先切边、再进行复合模冲孔和校正的工艺，减少了自由锻出坯、增碳调质、机加工大孔3道工序，实现了锻件余热调质，锻件制造成本降低20%以上，生产周期缩短50%。

Focusing on the hammer die forging technology deficiency of DK20 connecting rod, the technology of precision die forging on the high power screw press production line was put forward, the design issues of each tooling process were described, and the effective solutions for the problems during the production were resolved. Compared with the hammer die forging, a medium frequency induction heating, the triple-pass roll forging blanks were adopted,and the process of trimming first by press and then punching compound die and calibration was applied,which avoided three processes of free forging billets, carbon tempering and machining holes, achieved residual heat quenching and tempering for forging. The forgings manufacturing costs were reduced by more than 20%, the production cycle was shortened by 50%.

基金项目：

詹辉（1967-），男，学士，高级工程师

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