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A method for controlling the traces of emulsion on the surface of cold-rolled steel strip

A control method and emulsion technology, used in metal rolling, metal rolling, workpiece surface treatment equipment, etc., can solve the problems of dark and dark emulsion, irregular shape, random distribution, etc., to improve technical effects and improve products. Effect of quality, emulsion trace defect elimination

Active Publication Date: 2018-06-22
BEIJING SHOUGANG COLD ROLLED SHEET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a method for controlling emulsion traces on the surface of cold-rolled strip steel, which solves or partially solves the problem of randomly distributed, irregularly shaped, dark-colored emulsion traces on the surface of strip steel after acid rolling off-line in the prior art To solve the technical problems, the technical effect of avoiding emulsion traces on the surface of strip steel after acid rolling off the production line and improving product quality

Method used

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  • A method for controlling the traces of emulsion on the surface of cold-rolled steel strip

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] S1: Purify the gas medium with a set cycle; specifically include: the gas medium is purified through the filter device; the set cycle is 40 hours, and the filter device is cleaned according to the set cycle.

[0030] S2: The pressure of the gas medium ejected from the control nozzle is 7Bar; generally, the pressure of the gas medium is adjusted in real time through the compressed gas valve to maintain the pressure of the gas medium at 7Bar; the specific process is: the emulsion on the surface of the strip is not completely In the case of blowing, the on-site operators are required to first check whether the compressed air valve is normally open, if not, open the valve, and observe the pressure of the compressed air and adjust it in real time.

[0031] S3: Clean the nozzle at set intervals and correct the angular position of the nozzle; clean the nozzle and correct the angular position of the nozzle according to the set time, so that the nozzle maintains the initial set a...

Embodiment 2

[0034] S1: Purify the gas medium with a set cycle; specifically include: the gas medium is purified through the filter device; the set cycle is 48 hours, and the filter device is cleaned according to the set cycle.

[0035] S2: The pressure of the gas medium ejected from the control nozzle is 8Bar; generally, the pressure of the gas medium is adjusted in real time through the compressed gas valve to maintain the pressure of the gas medium at 8Bar; the specific process is: the emulsion on the surface of the strip is not completely In the case of blowing, the on-site operators are required to first check whether the compressed air valve is normally open, if not, open the valve, and observe the pressure of the compressed air and adjust it in real time.

[0036] S3: Clean the nozzle at set intervals and correct the angular position of the nozzle; clean the nozzle and correct the angular position of the nozzle according to the set time, so that the nozzle maintains the initial set a...

Embodiment 3

[0039] S1: Purify the gas medium with a set cycle; specifically include: the gas medium is purified through the filter device; the set cycle is 60 hours, and the filter device is cleaned according to the set cycle.

[0040] S2: The pressure of the gas medium ejected from the control nozzle is 8Bar; generally, the pressure of the gas medium is adjusted in real time through the compressed gas valve to maintain the pressure of the gas medium at 8Bar; the specific process is: the emulsion on the surface of the strip is not completely In the case of blowing, the on-site operators are required to first check whether the compressed air valve is normally open, if not, open the valve, and observe the pressure of the compressed air and adjust it in real time.

[0041]S3: Clean the nozzle at set intervals and correct the angular position of the nozzle; clean the nozzle and correct the angular position of the nozzle according to the set time, so that the nozzle maintains the initial set an...

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Abstract

The invention relates to a cold-rolled strip steel surface emulsion trace control method. The method comprises the following steps: a gas medium is purified by a set period; the pressure of a gas medium sprayed by a nozzle is controlled to be higher than 6 Bar; the nozzle is cleaned by spacing set time; the angle position of the nozzle is corrected; and after strip steel is discharged from a production line by acid rolling, the continuous annealing and the galvanization production scheduling are finished in preset time. The cold-rolled strip steel surface emulsion trace control method can prevent generation of emulsion traces on surfaces after discharging from the production line by acid rolling so as to improve the product quality.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a method for controlling emulsion traces on the surface of cold-rolled strip steel. Background technique [0002] In recent years, with the gradual improvement of users’ requirements for the surface quality of cold-rolled products, especially high-grade outer plates, the surface requirements of heat treatment production lines for off-line products of acid rolling have also been further improved. This is a typical defect of cold hard substrate, which seriously affects the surface quality of strip steel in the heat treatment production line, and it is difficult to meet the requirements of high-grade automotive outer panels. [0003] During the production process of the pickling and rolling mill combined unit of Shougang Cold Rolling Sheet Co., Ltd., after the strip steel was pickled and rolled off the production line, there were randomly distributed, irregularly s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B45/02
CPCB21B45/0275
Inventor 程晓杰李振曾卫仔孙建华赵宁柳智博陈甚超任君茹
Owner BEIJING SHOUGANG COLD ROLLED SHEET
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