介绍1 960 MPa级Ø15.20 mm低松弛预应力镀锌钢绞线研发工艺.采用的Ø13.0 mm 82B专用盘条添加Cr和V元素,采用盐酸酸洗和锌系磷化表面处理工艺,中频加热温度380 ℃,张力120 kN,捻制速度40 m/min,生产的镀锌钢绞线力学性能和表面质量均符合GB/T 33363-2016要求,满足客户对产品的技术使用要求.
Development of 1 960 MPa grade diameter 15.20 mm high strength low relaxation prestressed galvanized steel strand
To introduce development process of 1 960 MPa grade diameter 15.20 mm high strength low relaxation pres-tressed galvanized steel strand.Diameter 13.0 mm 82B special wire rod added Cr and V elements,hydrochloric acid pick-ling and zinc phosphating surface treatment technology was adopted,medium frequency heating temperature 380 ℃,tension 120 kN,lay speed 40 m/min.The mechanical properties and surface quality of galvanized steel strand produced meet re-quirements of GB/T 33363-2016,and meet technical requirements of customers for products.
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