Method for inhibiting continuous hot-dip galvanizing and aluminizing unit coiling overflow edge

A hot-dip galvanizing and unit technology, applied in the direction of coiling strip, thin material handling, transportation and packaging, etc., can solve problems such as product defects, achieve the effect of improving surface smoothness, reducing product rejection rate, and suppressing overflow

Inactive Publication Date: 2015-04-01
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing hot-dip galvanized aluminum unit causes serious product defects when sending coil overflow

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  • Method for inhibiting continuous hot-dip galvanizing and aluminizing unit coiling overflow edge
  • Method for inhibiting continuous hot-dip galvanizing and aluminizing unit coiling overflow edge
  • Method for inhibiting continuous hot-dip galvanizing and aluminizing unit coiling overflow edge

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Embodiment Construction

[0025] The technical solution of the present invention will be further described in detail with a specific embodiment below.

[0026] In order to solve the problem that the existing hot-dip galvanizing aluminum unit causes serious product defects when the coiling overflows, a method for suppressing the coiling overflow of the continuous hot-dip galvanizing aluminum unit is proposed. The specific steps of the method are as follows:

[0027] First, the exit section controller reads the switching time of the alignment coiling device from the centering mode to the automatic mode, the set threading speed of the exit section, and the thickness of the strip, and according to the switching time of the alignment coiling device, the exit Calculate the running length of the strip steel in the non-controlled state based on the set speed of section threading and the initial coil diameter, and calculate the number of coils wound on the coiler when the strip steel is in the non-controlled st...

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Abstract

The invention relates to an inhibition method for continuous hot-dip galvanizing and aluminizing unit coiling overflow edge. The inhibition method for the continuous hot-dip galvanizing and aluminizing unit coiling overflow edge is aimed to solve the problem that an existing hot-dip galvanizing and aluminizing unit has serious product defects in a coiling overflow situation. The inhibition method for the continuous hot-dip galvanizing and aluminizing unit coiling overflow edge includes that firstly, an outlet section controller reads the switch time of a trimming coiling device from an alignment mode to an automatic mode, a set threading speed at the outlet section and strip steel thickness and calculates the running length of the strip steel during a non-control state period and the winded circle number of the strip steel on the coiling machine under the non-control state; secondly, the outlet section controller reads the roller diameter of a NO.9 tension roller, the sampling value of a coder, a gear ratio and a system sampling time, calculates the accumulated running distance of the head of the strip steel at the outlet section in the threading process and sets conditions for controlling actions of a trimming coiling device detection unit; finally, when the ratio of the tension detection value to the set value is higher than a preset ratio, the trimming coiling device is controlled to switch to the automatic mode. The inhibition method for the continuous hot-dip galvanizing and aluminizing unit coiling overflow edge is suitable for industrial automatic control.

Description

technical field [0001] The invention belongs to the field of industrial automation control, and in particular relates to a method for suppressing the coil overflow edge of a continuous hot-dip galvanized aluminum unit. Background technique [0002] Existing data and technology information retrieval of well-known domestic steel mills show that the quality defects of cold-rolled products are divided into three types: shape overflow, weld overflow, and coiling tension is too small or fluctuating according to their causes. The reasons for the former two are mainly due to the poor shape quality of the hot-rolled incoming materials and two different specifications of products before and after the weld, while the latter is mainly caused by the imperfect design of the strip tension control program during coiling. The measures to be taken are that when the overflow edge is found to be serious, the speed should be manually reduced first, and the manual centering adjustment should be a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H26/00B65H23/032
CPCB65H26/04B65H23/032B65H2557/24
Inventor 史剑
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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