管线钢制管热过程的加热温度与组织性能研究  

Research on Heating Temperature and Structure Properties in Pipe-making Heat Process of Pipeline Steel

作　　者：杨忠文[1,2] 高惠临[1] 虞毅[1] 霍春勇[3] 冯耀荣[3] 刘迎来[3] 

机构地区：[1]西安石油大学 [2]宝鸡石油钢管有限责任公司,陕西宝鸡721008 [3]中国石油天然气集团公司管材研究所

出　　处：《焊管》2007年第1期17-20,81,共4页Welded Pipe and Tube

基　　金：国家自然科学基金(50374056);中国石油天然气集团公司科研项目(2002F70127;ZYT-0208)

摘　　要：研究了一种适用于管道钢管和管件制造的X70级管线钢在不同加热温度下的奥氏体晶粒长大规律和组织-性能间的关系。给出了试验钢奥氏体晶粒平均截距D和奥氏体化温度T的定量关系式。分析认为：随加热温度的升高，X70级管线钢的强度增加，韧性下降；当加热温度为850—1050℃时，可获得较好的强韧配合。The article discusses and finds the Auster grain growing rules and relations of structure and properties of X70 steel in weld pipe and pipe accessories under the different heating temperature.And it also points out the formula of average intercept D of Auster grain and Austerization temperature T in test steel and further finds that X70 strength becomes higher and roughness becomes lower with the higher heat temperature,and within the scope of 850～1 050 ℃,the march of strength and roughness is better.Also it discusses the relationship of strength and roughness and structure of pipeline steel in heat process.

关 键 词：X70级管线钢 钢管 管件 热过程 晶粒尺寸 加热温度 组织性能 

分 类 号：TG402[金属学及工艺—焊接]