QStE700TM型高强度钢方矩管滚弯成形试验  

Roll Bending Experimental Study of QStE700TM Rectangular Tube

作　　者：康稳 赵亦希[1] 晏培杰 马越峰 

机构地区：[1]上海交通大学上海市复杂薄板结构数字化制造重点试验室,上海200240 [2]上海宝山钢铁集团公司型钢有限公司,上海201107

出　　处：《上海交通大学学报》2015年第10期1516-1521,共6页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金项目(51375308)资助

摘　　要：对QStE700TM型高强度钢方矩管进行了滚弯成形试验,研究了滚弯时前辊间距、辊轮间隙和滚弯道次对于方矩管内壁凹陷的影响规律.结果表明,弯管的相对弯曲半径R/D难以表征不同规格方矩管的弯曲性能,而考虑截面尺寸的弯曲参数k与相对内壁凹陷深度具有较好的线性关系,可用于评价滚弯成形内壁的凹陷程度.当前辊间距增加时,弯管内壁的凹陷深度增大;当弯曲半径较大时,辊轮与方矩管之间的间隙对内壁凹陷的影响更加明显;多道次滚弯将导致更为严重的内壁凹陷.Experiment was conducted to investigate the section dent-depth of QStE700 TM rectangular tube in roll bending.The result shows that the relative bending radius is unable to reflect the dent-depth of tubes with different section sizes,while the bending parameter k,which includes the section dimension,has a high linear correlation with the inner section dent-depth.This bending parameter can be used for evaluating the dent-depth in roll bending.The experimental study shows that the dent-depth increases with the increase of the distance of the front rollers with a clear linear relationship.The clearance between the roller and the tube has a greater positive impact at lager radius.Multi passes make the dent more serious.This study can provide good guidance to the roll bending process.

关 键 词：高强度钢 方矩管 滚弯成形 截面凹陷 

分 类 号：TG386[金属学及工艺—金属压力加工]