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Method for controlling elongation of double-rack wet temper mill

A control method and elongation rate technology, applied in the field of metallurgy, can solve problems such as limiting the expansion of unit product diversification, affecting product quality, inability to adjust distribution and independent control, etc., to ensure uniform wear, reduce roll consumption, and improve stability Effect

Active Publication Date: 2020-12-29
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overall control mode of the elongation rate of the double-stand skin pass mill cannot optimally adjust and independently control the elongation rate distribution (that is, rolling reduction) of the two stands, and cannot perform differentiated elongation rate, The control of plate shape and roughness affects product quality and limits the expansion of unit product diversification

Method used

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  • Method for controlling elongation of double-rack wet temper mill
  • Method for controlling elongation of double-rack wet temper mill
  • Method for controlling elongation of double-rack wet temper mill

Examples

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Embodiment

[0020] The elongation control method of the double-frame wet tempering machine in this embodiment adopts a double-frame four-roller wet tempering machine for thin gauge annealed tin (chrome) substrate rolls with a thickness of 0.2-0.4 mm and a width of 700-950 mm. Carry out a leveling treatment with an elongation rate of 1.5±0.2%, the leveling process is wet leveling, and the leveling liquid concentration is 3±0.5%; the entrance section, middle section and exit section of the two-stand four-roller wet leveling machine are all provided with The velocimeter is output to the two frames of the two-frame four-roller wet-leveling machine through the tester to perform closed-loop control independently, including the following steps:

[0021] (1) Formulate the optimal allocation rule table of two rack elongation ratios of different steel types, thicknesses and widths:

[0022]

[0023] Wherein, the first elongation rate is the setting value of the elongation rate of the first frame...

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Abstract

The invention relates to a method for controlling the elongation of a double-rack wet temper mill. The method for controlling the elongation of the double-rack wet temper mill comprises the steps of making a rule table, establishing a model, adjusting and the like. According to the method for controlling the elongation of the double-rack wet temper mill, when a steel type, a thickness and a widthare changed in a production process, elongation set values of two racks are calculated and adjusted in real time by using an elongation set value calculation model, so that the optimal adjustment setting for the elongation of the two racks in the production process of different materials is achieved, and automatic adjustment control for elongation modeling is achieved; and meanwhile, according tothe elongation of the two racks, real-time automatic matching adjustment is carried out on a roll bending force and tension according to existing process rules.

Description

technical field [0001] The invention relates to a method for controlling the elongation rate of a double-frame wet temper mill, belonging to the technical field of metallurgy. Background technique [0002] In modern iron and steel enterprises, continuous annealing units are often used to recrystallize and anneal the cold-rolled strip steel to improve the microstructure of the strip steel, thereby improving the plasticity and stamping formability of the strip steel. The annealed steel strip needs to be leveled, that is, deformed with a small reduction to eliminate the yield platform, improve the shape and surface quality, etc. As the process closest to the finished product in the production of cold-rolled strip, leveling can not only ensure the mechanical properties and shape quality of the annealed product by controlling the elongation and shape of the strip, but also form a certain roughness on the surface of the strip. , to achieve the purpose of improving the strip coati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/56B21B15/00
CPCB21B37/56B21B15/00B21B2015/0071
Inventor 王涛李少朋李灿珍谢邦立包祥明
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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