薄壁环形零件滚压成形研究  

Research on roll forming of annular thin-walled parts

作　　者：肖大志[1] 樊泽兴[1] 杨成林[1] 

机构地区：[1]重庆科技学院科技处,重庆400050

出　　处：《材料科学与工艺》2006年第1期75-77,共3页Materials Science and Technology

摘　　要：选择对称带槽薄壁环形零件,采用紫铜板料,通过有限元模拟及成形试验分析了薄壁环形零件滚压成形的力学特征、主要成形缺陷及成形极限,给出了试件变形区的应力应变分布、试件宽度与槽部高度的变化及滚压成形缺陷的试验结果.研究结果表明:采用滚压成形方法加工薄壁环形零件是可行的,滚压成形是局部变形,变形区壁厚变薄;当厚宽比t/b≤0.044时试件与模具接触的槽底部金属起皱,t/b≥0.058时开裂;可以通过增大板料厚度和滚压系数mG提高槽部成形极限.By choosing symmetric annular thin-walled parts with grooves, adopting red copper sheet metal, making FEM simulation and forming experiment, this essay analyses the mechanical features of roll forming of annular thin-walled parts, the main obstacle and the limit of forming. This essay shows the stress and strain distribution of the test part in the deforming area and the changes of the width and height of the test part and the experiment result of roll forming obstacle. The result shows that it is feasible to process the annular thin- walled parts by means of roll forming. Roll forming is partially deforming. The wall of the deforming area becomes thinner. The metal at the bottom of the groove connected with the test parts and mould is wrinkling when the ratio of the thickness and width is t/b ≤0. 044 and it cracks when the ratio is t/b≥0. 058. Increasing the thickness and rolling factor can improve the forming limit of grove.

关 键 词：环形零件 板料成形 滚压成形 

分 类 号：TG306[金属学及工艺—金属压力加工]