|
摘要：
|
|
由于镀铝钢板的表面镀层为含硅量5%～11%的Al-Fe-Si系金属间化合物,且表面有一层极薄的Al2O3表面钝化层,故其具有优异的耐热性、热反射性及耐腐蚀性,常用其制作隔热汽车零部件。但当其厚度小于0.5mm且镀层厚大于20μm时,会因镀层厚度比例的增加而降低其冲压成形性能,从而引起冲压件严重起皱及局部破裂。针对这一问题,本文选择轿车消声器隔热罩国产化作为研究对象,对其冲压成形过程进行了模拟仿真,分析并预测了产生冲压质量缺陷的原因,并对影响冲压质量的主要参数进行了优化。模拟结果表明,经过参数优化后,有效的抑制了冲压缺陷和提高产品质量。
|
|
Because the surface coating of the aluminum-coated steel is Al-Fe-Si series inter-metallic compound that contains Si with the percentage of 5%-11%,it has a good heat tolerance,heat reflective performance and anticorrosion. Thus it is widely used in the manufacturing of the heat preservation parts of car. But once the aluminum-coated steel thickness is between 20 μm and 0.5 mm,the drawing properties are lowered while the proportion between coating thickness and the whole sheet steel thickness increase,and wrinkle and fracture appear in stamping. Aiming at the problem,a car-muffler heat insulation-cover was selected as the researching object and stamping simulation was applied on it. The cause of the quality defect was analyzed and predicted. Based on this,the main parameters influencing the stamping quality were optimized. Result shows that stamping defects are controlled and the product quality is greatly increased.
|
|
基金项目：
|
|
863国家高科技计划资助项目(2006AA110104)
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]林忠钦.车身覆盖件冲压成形仿真[M].北京:机械工业出版社,2004.
[2]胡铁敏,林钟钦,徐伟力,等.车身覆盖件冲压成形动态仿真的研究进展[J].力学进展,2000,30(2):252-271.
[3]刘裕和,赵润鸣.我国汽车工业的发展及对轿车金属材料的要求[J].轧钢,1994,2(1):42-45.
[4]李性林.EQ140汽车消声器的失效原因分析与改进方向的探讨[J].汽车技术,1999,(5):20-23.
[5]姜忠贤.轿车排气系统耐热材料的开发和应用[J].汽车工艺与材料,1998,(8):22-24.
[6]Makinouchi.Sheet Metal Forming Si mulation in Industry[J].J.Mat.Proc.Tech.,1996,(60):19-26.
[7]Zhou D,Wagoner R H.An algorithmfor i mproved conver-gence in forming analysis[J].International Journal of Me-chanical Science,1997,39(12):1363-1384.
[8]朱丙东.轿车消声器隔热罩冲压成形模拟分析[D].长春市:吉林大学,2006.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
