High-speed wire production method for controlling same-circle mechanical property fluctuation of high-carbon steel wire rod

Abstract

The invention provides a high-speed wire production method for controlling the same-circle mechanical property fluctuation of a high-carbon steel wire rod. The high-speed wire production method comprises the following steps that the vibration value fluctuation of a laying head is controlled to be 2-3 mm / s, the laying circle diameter is controlled to be 9.5-1.1 m, and the specification distributionof a coil on an air-cooled Stelmor roller way is ensured; the starting speed of the roller way is controlled to be 0.6-0.7 m / s, and the density degree of steel wire rods of lap joints and non-lap joints is controlled; according to the specification of the steel wire rod, the angle of a Jiaoling baffle of a fan under the Stelmor air cooling roller way is adjusted, specifically, the angle of the Jiaoling baffle of the 5.5-8 mm steel wire rod is controlled to be 10 degrees, the angle of the Jiaoling baffle of the 8-12 mm steel wire rod is controlled to be 8 degrees, and the angle of the Jiaolingbaffle of the 12-16 mm steel wire rod is controlled to be 5 degrees; and the phase change starting temperature is controlled within 20-30 DEG C. The method has the advantages that the same-circle performance fluctuation of the steel wire rod is effectively reduced, the drawing capacity of the steel wire rod and the stability of steel wire performance are improved, the process practicability is high, and the method is suitable for improving the quality of high-carbon steel wire rods in high-speed wire factories.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular provides a high-wire production method for controlling fluctuations in mechanical properties of high-carbon steel wire rods in the same coil. Background technique [0002] The uniformity of the mechanical properties of the wire rod refers to the fluctuation of the wire rod performance due to the stability of the rolling process and the characteristics of the wire rod itself. The fluctuation of the same coil performance of the wire rod is proposed for the forming characteristics of the wire rod. Due to the different density of the wire rod stacked on the air-cooled roller table, the cooling parameters of the wire rod during the cooling process are different, resulting in the same coil performance. The fluctuation of mechanical properties is mainly reflected in the fluctuation of tensile strength, which can reach more than 100Mpa seriously. This fluctuation of mechanical pr...

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Problems solved by technology

Researchers in other steel mills have also innovated in cooling methods. The fan carries water vapor to speed up the cooling rate, but the window for controlling the process is very narrow, and a slight fluctuation in the process will aggravate the performance fluctuation of the same cycle.

SMS group proposed a control concept of three fans through equipment improvement, which changed the traditional one fan. Through the technical idea of ​​Jialing parameter wind distribution, some effects have been achieved in controlling the fluctuation of mechanical properties in the same circle, but the investment in equipment and The transformation cost is relatively high, and the promotion in the market needs the acceptance of many domestic enterprises

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