形位参数对楔横轧轴件气压压实的影响
PDF下载 (45590)田端阳 1,束学道 1*,魏伊伦 1,王 雨 1,许 畅 1,朱 颖 1,赵志龙 1,何庆芬 2.形位参数对楔横轧轴件气压压实的影响[J].宁波大学学报(理工版),2017,30(4):11-16.DOI:
TIAN Duan-yang 1,SHU Xue-dao 1*,WEI Yi-lun 1,WANG Yu 1,XU Chang 1,ZHU Ying 1,ZHAO Zhi-long 1,HE Qing-fen 2.Influence of shape and position parameters on compaction of cross wedge rolling shaft by gas pressure[J].Journal of Ningbo University(Natural Science & Engineering Edition),2017,30(4):11-16.DOI:
| Title: | Influence of shape and position parameters on compaction of cross wedge rolling shaft by gas pressure |
| 作者: | 田端阳 1, 束学道 1*, 魏伊伦 1, 王 雨 1, 许 畅 1, 朱 颖 1, 赵志龙 1, 何庆芬 2 |
| Author(s): | TIAN Duan-yang 1, SHU Xue-dao 1*, WEI Yi-lun 1, WANG Yu 1, XU Chang 1, ZHU Ying 1, ZHAO Zhi-long 1, HE Qing-fen 2 |
| 关键词: | 楔横轧轴件; 浮压法; 空洞; 形位参数 |
| Keywords: | cross wedge rolling shaft; floating-pressure method; void; shape and position parameters |
| 分类号: | TG376.2 |
| 文献标识码: | A |
| 摘要: | 鉴于高压气体压实楔横轧轴件内部空洞(浮压法)可以提高楔横轧轴件质量与成品率的特点, 为进一步改善该方法对心部空洞的闭合程度, 运用DEFORM-3D有限元软件, 研究了形位参数对轴件外形尺寸和空洞闭合的影响规律. 研究结果表明: 轴件高径比为2时, 心部空洞最难闭合; 空洞越靠近轴件表面, 其闭合就越快; 空洞数量和形状对其闭合速度的影响较大; 但以上4个因素对轴件外形尺寸几乎没有影响. 研究结果为控制轧件心部缺陷、提高轴件的力学性能奠定了理论基础. |
| Abstract: | Using high-pressure gas to compact inner void of cross wedge rolling shaft, i.e. the floating-pressure method, can improve the quality and yield of cross wedge rolling shaft. In order to improve the degree of closure of core void by this method, the effects of shaft shape and position parameters on void closure and its overall dimension are investigated using DEFORM-3D finite element software. Results show that the void is the most difficult to compact when the ratio of shaft’s height to diameter is 2; the closer a void is to shaft surface, the faster its closure would be; the effects of the void’s shape and quantity on the speed of void closure are more significant than those of the other factors. But the above four factors have little impact on shaft part overall dimension. The research results lay theoretical foundation for controlling rolled part core defects and improving the mechanical properties of shaft part. |
| 参考文献 /References: | [1] 束学道, SHCHUKIN V Y, KOZHEVNIKOVA G, 等. 楔横轧理论与成形技术[M]. 北京: 科学出版社, 2014:1-4. [2] DANNO A, AWANO T. Effect of rolling conditions on formation of central cavity in 2-roll cross rolling[J]. Journal of JST-P, 1976, 17(2):117-124. [3] 刘永. 大尺度圆钢热轧成型缺陷控制数值模拟研究[D]. 秦皇岛: 燕山大学, 2012. [4] 张振华. 大截面模具钢锻件内部空洞缺陷的闭合研究[D]. 上海: 上海工程技术大学, 2010. [5] 马庆贤, 曹起骧, 钟约先. 大型锻件的模拟技术及内部质量控制研究[J]. 中国机械工程, 1999, 10(9):1021-1023. [6] 束学道, 李国平, 祖汪明. 楔横轧多楔成形汽车半轴心部缺陷位置预测[J]. 应用科技, 2012, 39(2):45-48. [7] 邓陟, 曹起骧. 中心压实法对提高锻件质量的影响[J]. 北京科技大学学报, 1991, 13(4):337-341. [8] 束学道, 田端阳, 王雨, 等. 浮压法压实斜轧钢球内部空洞的条件[J]. 宁波大学学报(理工版), 2017, 30(1):1-6. [9] 孙茂才. 金属力学性能[M]. 哈尔滨: 哈尔滨工业大学出版社, 2003:57-71. |
| 备注/Memo: | 收稿日期: 2016-12-20. 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(51475247); 浙江省科技计划项目(2016C31018). 第一作者: 田端阳(1992-), 男, 湖北黄冈人, 在读硕士研究生, 主要研究方向: 塑性成形工艺. E-mail: 13355211308@163.com *通信作者: 束学道(1968-), 男, 安徽舒城人, 教授, 主要研究方向: 塑性成形工艺. E-mail: shuxuedao@nbu.edu.cn 宁波大学学报(理工版)网址:http://journallg.nbu.edu.cn/ |