2009, Volume 11, Issue 3
Strategic Study of CAE >> 2009, Volume 11, Issue 3
Research of 1 770 MPa galvanized steel wire for stay cable of domestic bridges
1. Jiangsu Provincial Sutong Bridge Construction Commanding Department, Nanjing 210006, China;
2. Baosteel Shanghai No. 2 Steel Co., Ltd., Shanghai 200090, China
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Abstract
This paper focuses on introducing the manufacture technique of the 1 770 MPa galvanized steel wire for stay cable usde in domestic bridges. During the development practices of high strength galvanized wire for the stay cable of Sutong Bridge, Baosteel Group established three key tecchnologies based on the research of manufacture technique and technological innovation. The three key technologies based on the research are: "Double tension + limiter die" process technology, "primary process + fine tuning" initegrated optimization technology and "three-level control" hot galvanization operation technology. With these key technologies, Baosteel Group produced the 1 770 MPa galvanized wire used for stay cable, which has high strength, low relaxation and good torsion performances.
Keywords
galvanized steel wire ; torsion ; double tension ; limiter die ; gravel wiping
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References
[ 1 ] 孙金茂.钢丝生产[M].北京:兵器工业出版社,2005
[ 2 ] 桑春明,沈爱国.缆索用高强度PC镀锌钢丝的研制[J].金属制品,2004,(6):6-8 link1
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