摘要
对P110油井钢管温矫后的尺寸及残余应力进行了测试、对比和分析，初步探讨了温矫工艺对P110油井钢管压溃性能的影响。研究结果表明，在现有温矫工艺下，经过一次温矫直，平均可以消除0．64％的不圆度，再经过一次冷矫直，平均又可以消除0．04％的不圆度；温矫后钢管管体的表面切向残余应力以拉应力为主，轴向残余应力为拉压组合应力，且分布极不均匀。
A preliminary probe was conducted into the effect by the warm-straightening process on anti-crash property of P110 oil-well steel tubes by means of measuring,comparing and analyzing of the dimensions and residual stress of the tube after warm-straightening treatment. The result shows that with the currently-employed warm-straightening process,after the first straightening the tube's ovality can be reduced by 0. 64%,and after the second one,by 0. 04%,and that after warm-straightening,the tube body surf actal tangential residual stress is mainly tensile stress, and the axial residual stress of the tube is tensile-compressive stress which distributes so unevenly.
出处
《钢管》
CAS
1998年第6期12-16,共5页
Steel Pipe
基金
"九五"攻关项目
关键词
油井钢管
温矫
尺寸精度
残余应力
油管
Oil-well steel tube Warm-straightening Geometric accuracy Residual stress distribution
