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High strength wire rod for prestressed concrete stranded wire and prestressed concrete stranded wire and manufacturing method thereof
High strength wire rod for prestressed concrete stranded wire and prestressed concrete stranded wire and manufacturing method thereof
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机译:用于预应力混凝土绞线的高强度线材和预应力混凝土绞线及其制造方法
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摘要
PURPOSE: A high-strength wire rod for a Prestressed Concrete strand, a PC strand, and a manufacturing method thereof are provided to improve drawability by making pearlite interlamellar spacing minute through isothermal heat treatment. CONSTITUTION: A high-strength wire rod for a Prestressed Concrete strand comprises C 0.80~0.95 weight%, Si 0.8~1.6 weight%, Mn 0.3~0.8 weight%, Cr 0.1~0.5 weight%, P less than 0.015 weight%, residual Fe, and inevitable impurities. A modified structure is composed of pearlite more than 95% and ferrite or proeutectoid cementite.
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