| 高速钢扁锭锻造内部裂纹产生原因研究 |
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| 引用本文： | 周杰,苏长清,金伟东,吕二乐,陈红兵.高速钢扁锭锻造内部裂纹产生原因研究[J].机械工程学报,1996(5). |
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| 作者姓名： | 周杰 苏长清 金伟东 吕二乐 陈红兵 |
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| 作者单位： | 重庆大学(周杰，苏长清，金伟东)，重庆特钢集团公司(吕二乐，陈红兵) |
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| 摘 要： | 在微机上采用刚粘塑性有限元分析法对高速钢锻造过程进行模拟研究，分析出了形成纵向裂纹的原因主要是由于锻造过程中双鼓形的存在，锻平时横截面内出现较大横向拉应力，其数值超过坯料强度而形成。据此提出了合理工艺参数和改进锻造工艺措施，有限元分析结果与实际相符，说明该微机模拟系统的设计是正确的。
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| 关 键 词： | 高速钢，裂纹，刚粘塑性，有限元法，扁锭锻造 |
RESEARCH ON INTERNAL CRACKS IN FORGINGOF THE FLAT INGOT OF HIGH-SPEED STEELS |
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| Zhou Jie, Su Changqing,Jin Weidong.RESEARCH ON INTERNAL CRACKS IN FORGINGOF THE FLAT INGOT OF HIGH-SPEED STEELS[J].Chinese Journal of Mechanical Engineering,1996(5). |
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| Authors: | Zhou Jie Su Changqing Jin Weidong |
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| Affiliation: | Zhou Jie; Su Changqing;Jin Weidong( Chongqing University)Lu Erle; Chen Hongbing(Chongqing Special Steel Group Co.) |
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| Abstract: | The forging proeess of the high-speed steels having been simulated and recearchedby the rigid-viscoplastic FEM in the microcomputer, the reason that cracks may occur at thecenter area of the billet is the existence of the double bulging in the forging process. Whenit was forged to plat, high cross tensile stress in the billet developed and exceeded the sir-ength of the billet. Acoordingly, the reasonable perameters and the steps made the forgingtechnology better were put forward, and the results analyzed by rigidviscoplastic FEM werecorresponding to fractical resulus, |
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| Keywords: | High-speed steel Crack Rigid-viscoplastic FEM Flat ingot forging |
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