摘要
通过采用微合金化技术、纯净钢冶炼技术和镀锌、稳定化处理工艺等技术,研制开发了1×7-15.2 mm-2100 MPa级热镀锌预应力钢绞线。抗拉强度≥2100 MPa;最大力伸长率≥4.5%;单丝面缩率≥25%;轴向疲劳试验施加385 MPa周期载荷,200万次不断丝。符合桥梁领域对结构件高耐腐蚀性能和高耐疲劳性能的要求。
The 1×7-15.2 mm hot dip galvanized prestressed steel strand was developed by using microalloying technology,pure steel smelting technology,galvanizing and stabilizing treatment technology.Tensile strength is no less than 2100 MPa;Maximum force elongation is no less than 4.5%;Surface shrinkage of monofilament is no less than 25%.In axial fatigue test,wire does not break after 385 MPa cyclic load was applied and 2 million times of continuous wire tension was applied.It meets the requirements of high corrosion resistance and high fatigue resistance of structural parts in bridge field.
作者
王志永
陈志强
朱树行
张杰
Wang Zhiyong;Chen Zhiqiang;Zhu Shuhang;Zhang Jie(Tianjin NTS Steel Wire and Steel Cables Co.,Ltd.,Tianjin 300400,China)
出处
《金属制品》
CAS
2021年第4期11-14,共4页
Metal Products
关键词
微合金化
热镀锌
钢绞线
抗拉强度
高韧性
疲劳试验
microalloying
hot dip galvanized
steel strand
tensile strength
high toughness
fatigue test
