?3.2mm高强度镀锌制绳钢丝生产工艺研究  

Production technology research of diameter 3.2 mm high strength galvanized steel wire for rope

作　　者：王小刚 贺孝宇 李伟 

机构地区：[1]贵州钢绳股份有限公司,贵州遵义563000

出　　处：《金属制品》2017年第2期7-9,共3页Metal Products

摘　　要：介绍?3.2 mm、抗拉强度1 960 MPa镀锌制绳钢丝生产工艺。针对该钢丝强度要求高,生产难度大,容易出现断丝、韧性差、剪切试验不合格等问题,提出解决措施:钢丝生产过程中,表面处理时采用2次磷化处理,增加钢丝磷化层厚度,提高钢丝磷化质量;钢丝拉拔时采用9道次拉拔,同一拉拔工艺拉丝模具采用不同工作锥角,从第1道次到最后1道次按照从大到小的原则,并确保各道次模具⊿值在1.2~2.0。采取措施后,成品钢丝抗拉强度2 020~2 080 MPa,扭转不小于28次,弯曲不小于14次,达到产品要求。To introduces the production process of diameter 3.2 mm,1 960 MPa tensile strength galvanized steel wire for rope.Aimming at such problem as the steel wire is difficult to produce,high strength,wire breaking,poor toughness and unqualified shear test is easy to appear,the solving measures are put forward：surface treatment adopt two times phosphating in the production of steel wire,increase wire phosphating film thickness,improve steel wire phosphating quality;steel wire adopt 9 pass wire drawing,at the same wire drawing process,the dies have different drawing work cone angle from the first pass to end pass according to the principle of from big to small,and to ensure the die ⊿ value in 1.2 - 2.0 at each pass.After adopting these measures,the finished wire tensile strength is from 2 020 to 2 080 MPa,torsion is not less than 28 times,bend is not less than 14 times,meet the product requirements.

关 键 词：制绳钢丝 索氏体 磷化 拉丝模 抗拉强度 

分 类 号：TG356.45[金属学及工艺—金属压力加工]