P110级25MnV钢石油套管热处理工艺的优化  

Optimization of Heat Treatment Process of P110 Oil Casing Tube of Steel 25MnV

作　　者：李亚欣[1] 刘雅政[1] 赵金锋[2] 邹喜洋 唐应波 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]北京科大中冶技术发展有限公司,北京100083 [3]衡阳华菱钢管(集团)有限公司技术中心,衡阳421001

出　　处：《特殊钢》2009年第6期36-38,共3页Special Steel

摘　　要：通过CCT曲线测定和热处理正交试验,研究了890～930℃25～45 min淬火和570～610℃50～80min回火参数对25MnV钢(%:0.25～0.30C、1.50～1.80Mn、0.06～0.15V)245 mm×12 mm管组织和力学性能的影响。结果表明,采用910℃35 min水淬+590℃65 min回火,套管的综合力学性能最佳:屈服强度878～906MPa,抗拉强度923～963 MPa,伸长率16.6%～17.4%,满足标准要求。Effect of parameters of quenching at 890 - 930 ℃ for 25 - 45 rain and tempering at 570 - 610 ℃ for 50 - 80 min on structure and mechanical properties of 245 mm × 12 mm tube of steel 25MnV （ % ： 0. 25 - 0. 30C, 1.50 - 1.80Mn, 0. 06 -0. 15V） has been studied by measured CCT curves and orthogonal test of heat treatment. Results show that with austenizing at 910℃ for 35 min, water quenching, and tempering at 590 % for 65 min, the comprehensive mechanical properties of casing tube are optimum i.e. yield strength 878 - 906 MPa, tensile strength 923 - 963 MPa and elongation 16. 6%- 17.4% to meet the standard requirement.

关 键 词：石油套管 25MNV钢 CCT曲线 热处理工艺 优化 

分 类 号：TG162.84[金属学及工艺—热处理]