Production process of steel wire rod for producing prestress steel strand by utilizing mini-rolling mill

Abstract

The invention discloses a production process of a steel wire rod for producing a prestress steel strand by utilizing a mini-rolling mill. The equipment advantage of the mini-rolling mill is fully utilized, and the material for producing the prestress steel strand is developed and produced. According to the method, the rolling production process of a conventional prestress steel strand is broken through, technological parameter optimization measures such as the key temperature points of the mini-rolling mill and the spinning are groped and adjusted, the tensile strength, the grain size, the surface shrinkage and other comprehensive performances of the produced prestress steel strand material are obviously improved, and meanwhile aging time of the steel type is shortened.

Description

technical field [0001] The invention belongs to the field of metallurgy and relates to a method for producing wire rods for prestressed steel strands with a mini-rolling mill. Background technique [0002] Since the 1980s, major foreign steel-producing countries have generally adopted high-speed wire rod mills and controlled cooling technology as the main process technology for high-speed wire production. Some domestic high-end production lines generally use a continuous rolling mill consisting of 28+4 rolling mills to produce rods. The rolling process is generally divided into five stages: rough rolling, intermediate rolling, pre-finishing rolling, finishing rolling and reducing and sizing unit rolling. Between the pre-finishing mill and the finishing mill, between the finishing unit, the reducing and sizing unit and the laying unit, there are several sections of water-cooled boxes. By controlling the water temperature, water pressure and water volume of the water-cooled bo...

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