金属带材无毛刺精密分切加工材料变形过程研究

阎秋生; 石现景; 路家斌

doi:10.13433/j.cnki.1003-8728.2016.0117

金属带材无毛刺精密分切加工材料变形过程研究

doi: 10.13433/j.cnki.1003-8728.2016.0117

1.
广东工业大学机电工程学院, 广州 510006

基金项目:

国家自然科学基金项目(51175090,51575112)资助

详细信息

作者简介:
阎秋生(1962-),教授,博士生导师,研究方向为光电子/微电子材料高效研磨与超光滑抛光,低碳节材加工技术,qsyan@gdut.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2014-04-18
- 刊出日期: 2016-01-05

Studying Plastic Deformation in Burr-free Disc Slitting Process of Metal Sheet

1.
School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China

摘要

摘要: 针对金属板材的圆盘剪分切加工,提出采用塑性剪切压迫分离工艺得到平整无毛刺的分切断面,基于精密分切加工实验建立了有限元模型,采用DEFORM-2D进行仿真,通过金属流变组织和材料静水应力的变化情况分析了镀锌板的变形过程和断面形貌的形成,仿真得到的分切断面特征与实验结果具有良好的一致性。研究了圆盘剪径向间隙和轴向间隙对无毛刺精密分切工艺的影响,发现当轴向间隙一定时,径向间隙为板材厚度的20%时分切断面质量最好;轴向间隙小于板材厚度的2.5%才能实现塑性剪切压迫分离工艺,在合理的轴向间隙范围内其值变化对分切断面形貌特征影响不明显。
- 塑性剪切压迫分离 /
- 塑性变形 /
- 有限元 /
- 形貌 /
- 静水应力
Abstract: Aiming at the disc slitting process of sheet metal, the technique of plastic shearing oppression slitting is proposed to obtain a smoot and burr-free slitting surface. Based on the experiments of precision slitting, a 2D model is established with the DEFORM software. The plastic deformation of the galvanized sheet and the formation of the slitting surface morphology features are analyzed by the changes of the metallographic structure and hydrostatic stress in the process of slitting. The simulation results are in a good agreement with the experimental results. It is studied that the influence of the radial clearance and axial clearance between the two disc cutters on the burr-free slitting process. It can be proved that when the axial clearance is determined and the value of radial clearance is 20% of the sheet thickness, the best slitting surface can be getten. And the plastic shearing oppression slitting could only be used when the radial clearance is less than 2.5% of thickness. The axial clearance does not have an obvious influence on the slitting surface in a reasonable range.
- computer simulation /
- computer software /
- creep /
- design of experiments /
- experiments

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参考文献(12)

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