Influence of cooling condition of tools on central deformation of workpiece and tool wear in cross wedge rolling
Influence of cooling condition of tools on central deformation of workpiece and tool wear in cross wedge rolling
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DOI：
10.1007/s00170-011-3537-6
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发表时间：
2012-03
期刊：
影响因子：
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通讯作者：
Menghan Wang;D. Xiang;Chuan Xiao;J. Zhou;Zhi Jia
中科院分区：
文献类型：
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作者：
Menghan Wang;D. Xiang;Chuan Xiao;J. Zhou;Zhi Jia
采用三维刚塑性有限元法建立了二辊楔横轧热力耦合仿真模型，研究了工具冷却条件对轧件中心变形和工具磨损的影响。基于模拟结果，对比分析了刀具冷却前后工件中心变形和刀具磨损的信息。研究结果表明，采用冷却水冷却模具，可以提高锻件质量和模具寿命。最后，以发动机连杆毛坯成形中的无缝线路为例，验证了研究结果的可行性。在工业应用中，获得了较高的锻件质量和较长的刀具寿命，有利于降低生产成本。研究结果对不同冷却条件下楔横轧过程中工件中心变形和刀具磨损的机理有一定的指导意义。
In this paper, a thermal–mechanical coupled simulation model for two-roll cross wedge rolling (CWR) was developed to investigate the influence of cooling condition of tools on central deformation of workpiece and tool wear by using three-dimensional rigid-plastic finite element method. Based on the simulation results, the information about central deformation of workpiece and tool wear with and without tool cooling was compared and analyzed. The study results indicate that forging quality and tool life can be improved by means of cooling the tools with cooling water. Subsequently, an industrial example of CWR in blank forming for engine connecting rod was presented to verify the feasibility of study results. In this industrial application, higher forging quality and longer tool life were obtained, which benefits the decrease of production cost. This study provides insights into the mechanisms of central deformation of workpiece and tool wear under different cooling conditions of tools in CWR process as well.