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摘要：
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为了解决毛坯塑性成形和精度控制的问题,通过理论和试验研究,提出温冷复合成形的工艺(预成形-反挤成形-冷挤整形)和"轴向导流"、"推挤成形"的成形原理,并研制了相应的模具;解决了毛坯塑性成形、精度控制的难点和试验中出现的氧化、内孔局部收缩等问题。试验结果表明:该工艺切实可行,整形后的毛坯a-b-c-d-e-f-g外形面可不必加工而直接满足零件的使用要求,保证了外形精度,节约了材料,减少了生产成本,提高了产品机械性能。
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In order to resolve the problems of plastic formation and accuracy control of blank,the warm cold compound forming process(preliminary shaping-backward extrusion forming-cold extrusion sizing) and the forming theory of "guiding flow in axial direction ","push extrusion forming " were adopted based on the study on the theory and experiment and the corresponding dies were developed.The difficulties of plastic formation and accuracy control of blank were solved,and the problems of oxidation and local shrinkage of internal hole were solved during experiment.The experimental results show that the process is proved to be feasible,and the a-b-c-d-e-f-g external surface of sized blank can meet the operating requirements of part directly without further machining.The contour accuracy is ensured,the materials are saved,the production costs are reduced,and the mechanical properties are improved.
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基金项目：
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作者简介：
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参考文献：
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