cpe机组张力减径生产工艺研究-材料加工工程专业毕业论文.docx

第1I页武汉科技大学硕士学位论文
Abstract
For solving the problem of producing the steel tube instable,rolling pressure in some pass oversize,the length of pipe end upset is excessive long and performance unqualified of seamless tube branch of wuhan iron and steel(group)corp.,the paper researched physics
characteristic of 37Mn5 steel,improved technology and pass parameter of sizing and stretch reducing production line,reformed craft system, increased wall precision of seamless tube and improved power parameter of mill and performance of product.
Through single dishes of experiment pressing and plural non—linear regression by gathering the typical data of stress-strain curves,flow stress mathematics model is
mathematics model is of simple structure and high precision in calculation and Can be used in
practical production.
Through studying the condition of production,optimized the production technology of sizing and stretch a new distribution principle of reduction rat,the reduction rat of sizing mill is set to 1 0%,lightening load of mill for guaranting it safely;increasing the reduction rat of stretch reducing mill to 30%to reducing the wall thickness;reducing the number of tensile mill,avoiding tensile force between mill units,curtailing the length of pipe
end upset 200mm;set the heating-印temperature below 11 00℃,finishing temperature above 840℃to acquiring good structural performance;counted force parameter of mill and checked the power of electric productive practice,curtailing the length of pipe end
upset obviously,production process steady and improved yield.
Keywords:CPE mill;seamless tube;stretch reducing;pipe end upset;rolling technology
武汉科技大学研究生学位论文创新性声明
本人郑重声明:所呈交的学位论文是本人在导师指导下,独立进行研究所取得的成果。除了文中已经注明引用的内容或属合作研究共同完成的工作外,本论文不包含任何其他个人或集体已经发表或撰写过的作品成果. 对本文的研究做出重要贡献的个人和集体,均已在文中以明确方式标明。
申请学位论文与资料若有不实之处,本人承担一切相关责任。
论文作者签名:.型兰重 日期: 询占、S、zb
研究生学位论文版权使用授权书
本论文的研究成果归武汉科技大学所有,其研究内容不得以其它单位的名义发表。本人完全了解武汉科技大学有关保留、使用学位论文的规定, 同意学