Water-cooling closed-loop control technological method and control system of stick materials

Abstract

The invention relates to a water-cooling closed-loop control technological method and control system of stick materials. The water-cooling closed-loop control technological method of stick materials comprises the following steps of collecting temperature information before finish rolling and after finish rolling of the stick materials; and according to through water cooling and a temperature feedback closed-loop regulating method, performing accurate rolling control and cooling control in the stick material rolling and reinforcing bar splitting rolling process. Through the adoption of the stick material water-cooling closed-loop control technological method disclosed by the invention, the stability of rolling control temperature and the stability of the cooling control technology can be realized, and the alloy usage quantity of the stick materials is reduced; the problems that the water cooling black circle tissue is generated on the surfaces of the stick materials and core surface hardness is poor caused by through water cooling are solved; and increasing the production benefits of a steel mill is facilitated. The method disclosed by the invention provides a technical thought foraccurately controlling a cooling technology for cooling the special steel stick materials including gears and the like after rolling, the problems of coarse crystal grains and cracking during cold shearing caused by unstable cooling technology of the special steel stick materials after rolling can be solved; and under the premise that the production cost of the stick materials of the steel mill isreduced, improving the product quality is facilitated, and the smooth operation of the production is promoted.

Description

technical field [0001] The invention relates to the technical field of controlled rolling and controlled cooling in steel rolling production, in particular to a bar water-cooled closed-loop control process method and control system. Background technique [0002] Closed-loop control has a wide range of applications in the field of metallurgical engineering, such as dynamic adjustment of gas consumption at constant target temperature of blast furnace hot blast stove, automatic water distribution of continuous casting secondary cooling, dynamic adjustment of air-coal combustion ratio of heating furnace, etc. However, in the field of controlled rolling and controlled cooling in steel rolling production, the application of the closed-loop control method in the prior art is not perfect. [0003] At the same time, the General Administration of Quality Supervision, Inspection and Quarantine and the National Standards Committee have officially released the new standard "GB / T 1499.2-2...

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Problems solved by technology

[0004] In addition, in the steel rolling production process, the conventional temperature measuring device is an infrared point thermometer. For high-speed moving bars and multiple bars after cutting, it is necessary to increase the number of thermometers and change their positions. Screening of test data, especially if the exit position of the finished product of the production line bounces and fluctuates, it will be difficult to detect the temperature signal of each bar, which will affect the normal production of bars

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