高强度不锈钢弧形板冷弯成形机理的集成研究  

Comprehensive Study on Principle of High-strength Stainless Steel Arc Strip in Cold-forming

作　　者：楚志兵[1,2] 马立峰[1] 黄庆学[1] 闫志杰[3] 潘海彦[1] 潘丽君[1] 

机构地区：[1]太原科技大学重型机械教育部工程研究中心,山西太原030024 [2]太原理工大学表面工程研究所,山西太原030024 [3]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《四川大学学报（工程科学版）》2012年第6期71-78,共8页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家'973'计划预研资助项目(2011CB612204);国家自然科学基金资助项目(51105264);教育部博士点基金资助项目(20111415120003;20111415110001);山西省自然科学基金资助项目(2010011036-2);山西省重大项目资助(20111101031);山西省专利推广项目资助(20121006);山西省科技创新项目资助(20111101014);校博士科研启动项目资助(20122017)

摘　　要：不锈钢弧形板具有耐腐蚀、强度高、光洁美观等优点,因此在地铁和高铁的建设中得到广泛应用。但因其尺寸精度要求高,导致成形工艺难度大,从而制约了工业的生产。针对此问题,以符拉索夫开口薄壁梁理论为基础,推导出符合高强度不锈钢弧形板成形弯曲角度表达式及横向变形及纵向变形的能量计算式,并编制出成形工艺。之后建立服役行为的数学模型,通过模拟轧制力大小及不锈钢弧形板成形后的回弹量来判定理论道次变形量分配的合理性。对合作企业现有冷弯成形机组改造,依据最优仿真结果进行实验,反复修正后的工艺模型能顺利辊弯出高强度不锈钢弧形板产品,且现场测试数据显示,机组的轧制力能稳定,成形后的回弹量较小,产品质量满足用户精度要求。对形成最优成形工艺,提高辊弯质量和精度有重要作用。Based on Vlasov open-profile thin-walled beam theory, bending angle expression consistent with high-strength stainless arc strip, energy equations of transverse and longitudinal deformation were deduced and process planning was obtained. The mathematical model of service behavior was established and the rolling force and spring back value after stainless arc strip being formed were simula- ted to judge the distribution reasonability of theoretical pass deformation. Depending on improved cold-roll forming equipment of cooper- ative enterprise and optimum simulation results, after several modification, high-strength stainless arc strip was roiled favorably, and testing result in site indicated that spring-back amount after forming is small and product quality could meet precision requirement of the users. Therefore the synthesis study on high-strength stainless arc strip of cold-bending principle is of great significance to optimum pro- cessing technology, bending roller quality and precision.

关 键 词：符拉索夫薄壁梁理论 冷弯成形 回弹量 集成研究 

分 类 号：TG333[金属学及工艺—金属压力加工]