日本JFE开发的建筑结构件用高强度厚壁钢管

介绍了为应对近几年来对更高强度较厚壁厚钢管的需求,日本JFE制钢公司开发的抗拉强度490～780 MPa、屈服强度385～630 MPa系列钢管产品,阐述了由于这些钢管产品都是采用高性能厚板制造,所以钢管的力学性能,尤其是屈服强度(YS)和屈服比(YR)性能更适用于建筑构架的建造。另外,根据各种设计的不同要求,JFE制钢公司通过控制制造钢管所用厚板的力学性能和制管工艺,既能制造低屈服比(YR)钢管,又能制造高屈服比(YR)钢管两种类型的建筑结构件用钢管。

HIGH STRENGTH AND HEAVY WALL THICKNESS STEEL PIPES FOR BUILDING STRUCTURES DEVELOPED BY JFE

In recent years higher tensile strength and heavier section of steel pipes have been required for building structures.JFE Steel has developed a series of steel pipes from 550 to 780 N/mm2 tensile strength class（from 385 to 630 N/mm2 yield strength class） by applying high performance steel plates.Mechanical properties of the pipes,particularly yield strength（YS） and yield ratio（YR）,are focused in order to achieve high performance for the building frames.Both low YR and high YR（high YS） types of pipes,which are required according to various design requests,can be produced through controlling the mechanical properties of applied plates and the manufacturing processes of the pipes