楔横轧无料头辊剪制坯端部质量研究
PDF下载 (395)胡 斌1,2,束学道1,2*.楔横轧无料头辊剪制坯端部质量研究[J].宁波大学学报(理工版),2014,27(03):103-107.DOI:
HU Bin1,2,SHU Xue-dao1,2*.On End Quality for Roll-cutting Billet without Stub Bar in Cross Wedge Rolling[J].Journal of Ningbo University(Natural Science & Engineering Edition),2014,27(03):103-107.DOI:
| Title: | On End Quality for Roll-cutting Billet without Stub Bar in Cross Wedge Rolling |
| 作者: | 胡 斌1, 2, 束学道1, 2* |
| Author(s): | HU Bin1, 2, SHU Xue-dao1, 2* |
| 关键词: | 无料头; 辊剪制坯; 堆料; 挡块 |
| Keywords: | non-stub-bar; roll-cutting billet; stacking; stop block |
| 分类号: | TG335.19 |
| 文献标识码: | A |
| 摘要: | 为解决辊剪工艺中的端面堆料缺陷, 实现楔横轧无料头轧制, 运用DEFORM-3D软件建立了辊剪制坯的有限元模型, 通过位移法阐明了辊剪过程中堆料缺陷的产生机理, 并通过改变工艺参数和创新模具设计的方法来抑制堆料, 提高坯料端面的成形质量. 结果表明: 在设备功耗范围内, 堆料值随着轧辊旋转速度的减小而减小, 随着进给速度的增大而降低; 在模具外圆周处添加挡块能有效地消除堆料缺陷. 该研究结果为完善辊剪制坯工艺, 实现楔横轧无料头轧制提供了技术支持和理论依据. |
| Abstract: | In order to remove the stacking defects on the end cross-section in the roll-cutting billet process and implement the cross wedge rolling without the stub bar, in this paper a roll-cutting billet finite element model is established using DEFORM-3D software. The forming mechanism of the stacking defects is clarified using the displacement method, and the forming quality of the billet end cross-section is improved through adjusting the process parameters and using the innovated mould to suppress the stacking. It is found that the stacking value decreases along with the decrease of the rotational velocity and the increase of the feed velocity. In addition, adding the stop block to the outer annulus in the mould proves to be an effective means to solve the problem of stacking defects. The proposed approach provides a technical support and a theoretical basis for further improving the roll-cutting billet process leading to the cross wedge rolling production without the stub bar |
| 参考文献 /References: | [1].胡正寰张康生王宝雨等楔横轧零件成形技术与模拟仿真[M]. 北京冶金工业出版社2004:58-65. [2].Pater Z. Theoretical and experimental analysis of cross wedge rolling[J]. International journal of machine tools and manufacture, 2000, 40:49-63. [3].彭文飞, 陈乐平, 束学道, 等. 非对称楔横轧轴向平衡与轴向窜动机理研究[J]. 北京理工大学学报, 2012, 32 (6): 575-579. [4].胡正寰张康生王宝雨等楔横轧[M]. 北京冶金工业出版社特种轧制学术交流会段万泽. 楔横轧轧件料头损耗规律的研究[D]. 北京北京科技大学2010. [5].祖汪明. 楔横轧多楔成形汽车半轴理论研究[D]. 北京:北京科技大学2008. [6].刘红涛. 基于DEFORM-3D平台不锈钢板材热轧工艺模拟研究On End Quality for Roll-cutting Billet without Stub Bar in Cross Wedge Rolling [7].HU Bin1,2, SHU Xue-dao1,2* [8].( 1.Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China; 2.Zhejiang Provincial Key Laboratory of Part Rolling Technology, Ningbo 315211, China ) [9].Abstract: In order to remove the stacking defects on the end cross-section in the roll-cutting billet process and implement the cross wedge rolling without the stub bar, in this paper a roll-cutting billet finite element model is established using DEFORM-3D software. The forming mechanism of the stacking defects is clarified using the displacement method, and the forming quality of the billet end cross-section is improved through adjusting the process parameters and using the innovated mould to suppress the stacking. It is found that the stacking value decreases along with the decrease of the rotational velocity and the increase of the feed velocity. In addition, adding the stop block to the outer annulus in the mould proves to be an effective means to solve the problem of stacking defects. The proposed approach provides a technical support and a theoretical basis for further improving the roll-cutting billet process leading to the cross wedge rolling production without the stub bar. |
| 备注/Memo: | 收稿日期: 2013?11?18. 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（51075216）; 浙江省杰出青年基金项目（R1110646）; 宁波大学优秀论文培育基金（PY2013017）. 第一作者: 胡斌（1989－）, 男, 浙江兰溪人, 在读硕士研究生, 主要研究方向: 塑性加工工艺与设备. E-mail: hb984244906@163.com *通信作者: 束学道（1968－）, 男, 安徽舒城人, 教授, 主要研究方向: 塑性加工工艺与设备. E-mail: shuxuedao@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
