摘要
通过对国产J55高频直缝焊管进行冷拔（轧）变形量与相关热处理等工序的配合试验，探讨出最小壁厚不均度值的最佳变形量范围（μ≈1.45），并进行了冷拔（轧）工艺中焊管的显微组织与性能变化测定．结果表明，控制焊管冷拔变形量后进行单道次冷轧，可以获得组织与性能均匀一致的精密焊管成品，成品管的壁厚不均匀度可在3％以下，性能不低于20钢精密泵管的标准要求．
Based on the experiments in deforming with cold-drawing (rolling) process andheat treatment of J55 hi-frequency straight weld pipe,the optimum deformation range for minimumwall-nonuniformity (u=1.45) has been set up,and the variation of microstructure and propertiesof the pipe under cold-drawing (rolling) conditions measured. The experimental result shows thatwith single-pass cold-rolling under proper control of deformation amount,it is possible to producefinished precision weld pipes with wall-nonuniformity under 3% and properties equal to or betterthan those of the 20# precision steel pipe for pump service.
出处
《钢管》
CAS
1998年第2期1-7,共7页
Steel Pipe
关键词
高频直缝焊管
焊缝
壁厚不均度
冷拔
冷轧
Hi-frequency straight weld pipe Weld seam Wall-nonuniformity Microstructure Property
