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A production control method for film thickness of high-precision color-coated sheet

A production control method and technology for color-coated boards, which are applied in the directions of coatings, devices for coating liquid on surfaces, pre-treatment of surfaces, etc., can solve the problems of paint waste, inconsistent performance of color-coated boards, etc., and achieve simple and effective operation methods. The production parameters are easy to adjust and the effect of significant economic benefits

Active Publication Date: 2022-05-03
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the coating thickness control directly determines the quality and performance of the color-coated board, and production experience shows that poor film thickness control will not only cause substandard performance of the color-coated board but also cause waste of paint, and the current control method has limitations described in the background technology. question

Method used

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  • A production control method for film thickness of high-precision color-coated sheet
  • A production control method for film thickness of high-precision color-coated sheet
  • A production control method for film thickness of high-precision color-coated sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The coating temperature is 35 °C, the color coating varieties are epoxy primer, polyester light color series (white ash) topcoat, the thickness of the steel plate is 0.5mm, and the unit speed is 120m / min. The viscosity value of the front of the first coating is 107.4cts, the viscosity value of the back of the first coating is 66.4cts, the viscosity value of the front of the fine coating is 194.2cts, and the viscosity value of the back of the fine coating is 75.5cts; the roll speed of the first coating front with material is 52.4m / min, the roll speed of the coating roller is 140.2m / min, the roll speed of the back of the first coating is 50.6m / min, and the roll speed of the coating roller is 141.5m / min; the pressure of the tape roller on the front of the first coating is 1820kg. The pressure of the coating roller is 220kg, the roll speed of the fine coating front strip roll is 60.3m / min, the roll speed of the coating roller is 139.1m / min, the roll speed of the fine coating ba...

Embodiment 2

[0047] The coating temperature is 35 °C, the color coating variety is epoxy primer, polyester light color series (white ash) topcoat, the thickness of the steel plate is 0.5mm, and the unit speed is 135m / min. The viscosity value of the front side of the first coating is 109.5cts, the viscosity value of the back of the first coating is 67.9cts, the viscosity value of the front of the fine coating is 196.3cts, and the viscosity value of the back of the fine coating is 74.9cts; the roll speed of the first coating front with material is 50.1m / min, the roll speed of the coating roller is 153.2m / min, the roll speed of the back of the first coating is 50.4m / min, and the roll speed of the coating roller is 152.3m / min; the pressure of the tape roller on the front of the first coating is 1815kg. The pressure of the coating roller is 215kg, the roll speed of the fine coating front strip roll is 60.8m / min, the roll speed of the coating roller is 153.2m / min, the roll speed of the fine coating ...

Embodiment 3

[0049]The coating temperature is 33 °C, the color coating varieties are epoxy primer, polyester dark series (sea blue) topcoat, the thickness of the steel plate is 0.5mm, and the unit speed is 120m / min. The viscosity value of the front side of the first coating is 108.2cts, the viscosity value of the back side of the first coating is 70.6ts, the viscosity value of the front side of the fine coating is 210.3cts, and the viscosity value of the back of the fine coating is 78.3cts; the roll speed of the first coating front with material is 51.3m / min, the roll speed of the coating roller is 139.2m / min, the roll speed of the back of the first coating is 49.2m / min, and the roll speed of the coating roller is 141.2m / min; the pressure of the tape roller on the front of the first coating is 1780kg. The pressure of the coating roller is 216kg, the roll speed of the fine coating front strip roll is 61.1m / min, the roll speed of the coating roller is 141.2m / min, the roll speed of the fine coat...

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Abstract

The invention discloses a method for controlling the film thickness of a high-precision color-coated plate, which includes stably controlling the coating temperature, setting an online viscometer to test and monitor the kinematic viscosity of the coating, curing the process parameters of the coating machine, reducing variables, and according to the specific coating viscosity. Viscosity can be adjusted within a range to achieve stable control of film thickness with high precision. The invention innovatively combines the paint temperature control system with an online viscometer to ensure the controllability and accuracy of the paint viscosity by controlling the paint temperature and kinematic viscosity range. The invention narrows the variable affecting the film thickness to one variable of the kinematic viscosity value, solidifies the process parameters of the coating machine, thereby realizing high-precision control of the film thickness of the color-coated plate. The film thickness precision of the color-coated plate produced by the present invention is high, the actual average film thickness of tracking mass production is 21.01 μm, the film thickness control deviation can reach 5.05%, and the unit consumption of paint is 21.95kg / t, which can greatly reduce the unit consumption and dilution of paint The consumption of agent has significant economic benefits.

Description

Technical field [0001] The present invention relates to a production control method of color coated plate, specifically to a high-precision, high-stability film thickness production control method of color coated plate, which belongs to the field of steel color coating technology. Background [0002] Color-coated steel plate (referred to as color coated plate) is mainly made of metal strip as the substrate (such as cold-rolled plate, hot-dip galvanized plate, aluminum-plated plate, high-alumina alloy plate, stainless steel plate, etc.), and coated or laminated on its surface with various organic coatings or plastic films. It has the advantages of high mechanical strength, beautiful appearance, good corrosion resistance, easy processing and forming, etc., and can also reduce costs and pollution. Therefore, color coated board is widely used in construction, home appliances, automobiles, transportation and other industries, and the social demand is increasing. [0003] For color co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/14B05C11/10B05C1/08B05D1/28B05D3/02
CPCB05D7/14B05C11/1042B05C1/0826B05D1/28B05D3/0272B05D2504/00B05D2508/00B05D2202/10
Inventor 杜蓉白会平刘星雷泽红杨宏武谢芬涂元强周小舟
Owner 武汉钢铁有限公司
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