楔横轧42CrMo/Q235复合材料层合轴界面最大剪切应变的影响因素分析
PDF下载 (542)彭文飞 1,2,闫 超 1,2,张 孝 1,2,束学道 1,2,朱 健 1,2,吴焕铭 1,2.楔横轧42CrMo/Q235复合材料层合轴界面最大剪切应变的影响因素分析[J].宁波大学学报(理工版),2018,31(1):19-24.DOI:
PENG Wen-fei 1,2,YAN Chao 1,2,ZHANG Xiao 1,2,SHU Xue-dao 1,2,ZHU Jian 1,2,WU Huan-ming 1,2.Influence factors of the interface maximum shear strain of composite 42CrMo/Q235 laminated shaft formed by cross wedge rolling[J].Journal of Ningbo University(Natural Science & Engineering Edition),2018,31(1):19-24.DOI:
| Title: | Influence factors of the interface maximum shear strain of composite 42CrMo/Q235 laminated shaft formed by cross wedge rolling |
| 作者: | 彭文飞 1, 2, 闫 超 1, 2, 张 孝 1, 2, 束学道 1, 2, 朱 健 1, 2, 吴焕铭 1, 2 |
| Author(s): | PENG Wen-fei 1, 2, YAN Chao 1, 2, ZHANG Xiao 1, 2, SHU Xue-dao 1, 2, ZHU Jian 1, 2, WU Huan-ming 1, 2 |
| 关键词: | 层合轴; 工艺参数; 界面最大剪切应变; 楔横轧 |
| Keywords: | laminated shaft; process parameters; interface maximum shear strain; cross wedge rolling |
| 分类号: | TG335.19 |
| 文献标识码: | A |
| 摘要: | 对楔横轧42CrMo/Q235层合轴进行轧制实验和有限元分析, 研究成形角、展宽角、断面收缩率、轧制温度对界面最大剪切应变的影响规律. 结果表明: 成形角、轧制温度对最大剪切应变影响不大, 断面收缩率、展宽角对最大剪切应变影响较大; 展宽角越大, 界面两侧最大剪切应变差值越大; 断面收缩率越大, 界面两侧最大剪切应变差值越小. 同时, 在最大剪切应变变化不大的情况下, 仍然有界面的结合与分离, 因此, 界面是否结合仅考虑最大剪应变是不充分的, 还需综合考虑其他指标的影响. 研究结果对楔横轧层合模具设计和揭示界面结合机制奠定了基础. |
| Abstract: | The rolling experiments and finite element analysis of cross wedge rolling of 42CrMo/Q235 laminated shaft are carried out. The influence rules of forming angle, spreading angle, area reduction and rolling temperature for the interface maximum shear strain are investigated. The results show that the forming angle and rolling temperature have insignificant effect on the interface maximum shear strain. The area reduction and spreading angle have great impact on the interface maximum shear strain. The larger the spreading angle, the larger difference of the maximum shear strain on both sides of the interface. The larger the area reduction, the smaller difference of the maximum shear strain on both sides of the interface. Also found is that, if the maximum shear strain does not change much, there still occurs lamination or separation between clad and core materials. Other than considering whether the interface is combined with only the maximum shear strain, the influence of other factors also needs to be considered in most cases. The results provide the foundation for the die design of cross wedge rolling of laminated shaft and manifest the interface bonding mechanism. |
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| 备注/Memo: | 收稿日期: 2017－11－07. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/基金项目: 国家自然科学基金（51405248, 51475247）; 山东省重点研发计划（2016ZDJQ0604）; 浙江省自然科学基金（LY18E050006）; 宁波市自然科学基金（2017A610088）; 宁波市工业类重大科技计划（2016B10046）.第一作者: 彭文飞（1983－）, 男, 云南普洱人, 博士后/副教授, 主要研究方向: 塑性成形技术及复合材料成型. E-mail: pengwenfei@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
