Production process for 82B wire rod used for high strength prestressed steel wire and wire rod thereof

Abstract

The invention relates to a production process for an 82B wire rod used for a high strength prestressed steel wire and a wire rod thereof. The production process achieves objects of refining grains, improving the metallographic structure and obtaining high sorbite rate, improves strength and plasticity of the 82B wire rod used for the high strength prestressed steel wire and realizes an object of optimizing a metallographic structure and mechanical properties of the 82B wire rod used for the high strength prestressed steel wire, by optimally designing chemical components of the 82B wire rod used for the high strength prestressed steel wire, adjusting heating procedures of a heating furnace before rolling, and employing controlled rolling and controlled cooling techniques. The high power quality and mechanical properties of the 82B wire rod with a nominal diameter of 6.5 mm used for the high strength prestressed steel wire reach the national standard of the hot rolling wire rod used for the prestressed steel wire and steel strand, and meet production requirement of downstream users.

Description

technical field [0001] The invention belongs to the field of metallurgy, and relates to a production process of wire rods, more specifically, to a production process of 82B wire rods for high-strength prestressed steel wires and the wire rods obtained according to the production process. Background technique [0002] High-strength prestressed steel wire is a product with high strength and high technical content among the steel used in construction. It is widely used in large-scale high-speed railways, highways, bridges, roof trusses, crane beams, high-rise buildings, sleeper rail industries, etc. Due to the special working conditions and working environment of prestressed steel wire, there are three basic requirements for its quality, that is, uniform material and good cleaning performance; the strength of the same batch of products must be at the same level. Correspondingly, the wire rod used for the production of prestressed wire products is also required to have high stee...

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Problems solved by technology

[0003] At present, the main problems of hot-rolled wire rods for prestressed steel wire in my country are that the sorbite rate is not high and uneven, and the mechanical properties are not high. This is the main factor restricting the development of prestressed steel wire in my country.

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