压下率对皮尔格热轧双金属复合钢管成形性的影响研究  

Effect of Reduction Rate on Forming Properties of Pilger Hot Rolled Bimetallic Composite Steel Tube

作　　者：何宗霖[1,2,3,4] 李莉娜 双远华 楚志兵[1,2,3,4] 王仕杰 HE Zonglin;LI Li'na;SHUANG Yuanhua;CHU Zhibing;WANG Shijie(Shanxi Provincial Key Laboratory of Metallurgical Equipment Design and Technology,Taiyuan University of Science and Technology,Taiyuan 030024,China;Mechanical Engineering Department,Shanxi Engineering Vocational College,Taiyuan 030009,China;Yuanping Vocational School,Yuanping 034100,China;China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an 710032,China)

机构地区：[1]太原科技大学山西省冶金设备设计理论与技术重点实验室,山西太原030024 [2]山西工程职业学院机械工程系,山西太原030009 [3]原平市职业学校,山西原034100 [4]中国重型机械研究院股份公司,陕西西安710032

出　　处：《热加工工艺》2020年第1期76-79,82,共5页Hot Working Technology

基　　金：山西省留学基金资助项目(2017-084);山西省重点学科建设经费资助项目(2017-048);国家自然科学基金面上资助项目(U1710113);中国博士后科学基金面上资助项目(2017M622903);山西省重点研发计划一般项目(201703D121008);国家重点研发计划项目(2018YFB1307902);山西省重点研发计划重点项目(201703D111003,201703D111002);山西省研究生联合培养基地人才培养项目(2018JD33);2018年山西省高等学校科技创新项目(201804032);山西省教育科学“十三五”规划2018年度规划课题(GH-18140).

摘　　要：在轧制温度1000℃,送进量10 mm,回转角度57°,壁厚压下率分别为30%、45%、60%的条件下,对尺寸为φ38 mm×3 mm的外管304不锈钢与内管Q235碳钢壁厚比为1:1的管坯进行了皮尔格热轧数值模拟和实验研究。结果表明:30%压下率存在间隙和杂质,未达到完全冶金复合,45%、60%压下率下复合层达到了完全冶金复合。45%压下率的复合管外壁厚与内壁厚之比为1.43,介于35%和60%压下率复合管之间,与60%压下率的1.46壁厚比相比,更节省复合管中304不锈钢的使用量。Under the conditions of rolling temperature of 1000℃,feed amount of 10 mm,rotation angle of 57°,and wall thickness reduction rate of 30%,45%and 60%,the numerical simulation and experimental study were carried out by using the tube billet size ofφ38 mm×3 mm and the wall thickness ratio of 1:1(the ratio of wall thickness of 304 stainless steel outer tube to wall thickness of Q235 carbon steel inner pipe).The results show that there are gaps and impurities in the 30%reduction rate that does not reach the complete metallurgical recombination.The composite layers with 45%and 60%reduction rate reach the complete metallurgical composite.The ratio of outer and inner wall thickness of the composite pipe with 45%reduction rate is 1.43,which is between 35%and 60%reduction rate composite pipe.Compared with that of 1.46 wall thickness ratio of 60%reduction rate,the application amount of 304 stainless steel in the composite pipe is saved.

关 键 词：皮尔格热轧 压下率 冶金复合 壁厚比 

分 类 号：TG335.11[金属学及工艺—金属压力加工]