辊模拉拔扁丝后张力系统的设计及对产品性能的影响  

Design of back tensioning system for roller die flat wire drawing and its effect on products

作　　者：薛文虎 周海军[2] 陶志刚[2] 杨恒[3] 刘宏敏[3] 

机构地区：[1]江阴法尔胜钢铁制品有限公司,江苏江阴214445 [2]江苏法尔胜泓昇集团有限公司不锈钢制品分公司,江苏江阴214429 [3]江苏法尔胜泓昇集团有限公司技术中心,江苏江阴214432

出　　处：《金属制品》2011年第2期38-40,共3页Metal Products

摘　　要：辊模拉拔设备在无后张力情况下,生产的扁丝减面率变化大,直线性不稳定,成品扁丝表面质量不好,对辊模、机架、特别是轴承的损伤比较大。针对上述问题,设计过线轮直径为200 mm的后张力系统,并对原设备进行改进。试验结果表明,后张力对被加工材料的减面率有明显影响,在高度减小率相近的情况下,张力越大,扁丝减面率也越大;在相同后张力的作用下,碳素钢丝的减面率大于不锈钢丝;2道次辊模拉拔后扁丝的平均减面率略小于单道次拉拔的平均减面率。成品扁钢丝的直线性得到明显改善,扁钢丝的尺寸公差稳定,表面质量提高,辊模使用寿命增加。When there is no back tensioning,the area reduction ratio of flat wire produced by roller die drawing machine changes large,linearity is instable,surface quality of finished flat wire is not good,the damage to roller,frame,especially bearing is larger.Aiming at the problems,the back tensioning system of wire wrapping sheave diameter 200 mm is designed,the former device is improved.Results show that back tensioning has obvious influence on area reduction ratio of processed material.While the height reduction ratio is almost the same,tension is higher,flat wire area reduction ratio is larger.In the influence of same back tensioning,the area reduction ratio of carbon steel wire is larger than that of stainless steel wire.The average area reduction ratio of flat wire back two pass roller wire drawing is smaller than that of single pass wire drawing slightly,the linearity of finished flat wire is improved obviously,the size and tolerance of flat wire is stable,surface quality is good,service life of roller is increased.

关 键 词：扁丝 辊模拉拔 后张力 过线轮 减面率 

分 类 号：TG355.8[金属学及工艺—金属压力加工]