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High-temperature degreasing agent for treatment before auto coating surface adjustment and degreasing method thereof

A high-temperature degreasing and coating technology, which is applied in the field of high-temperature degreasing agents, can solve problems such as metal surface corrosion, unfavorable on-site operating environment, and affecting product quality, achieving good cleaning performance, good cleaning effect, and avoiding dirty cleaning.

Active Publication Date: 2018-05-15
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

[0004] Traditional degreasing agents mainly include the following categories: 1) Organic solvents, such as gasoline, freon, trichloroethane, toluene, ethanol, etc., organic solvents have a good cleaning effect on soluble oil stains, but it is difficult to remove inorganic particles, metal particles, etc. And general volatility is strong, poisonous and harmful, be unfavorable for on-the-spot operation environment; May cause metal surface corrosion; 3) emulsion, can remove all kinds of oil stains on the metal surface, and has good cleaning effect, but generally has poor stability and cannot be stored for a long time. cost
[0005] In addition, the coating production line is a continuous production line with fast production speed. Different coating production lines have different cleaning temperatures.
Using the existing degreasing agent, the saponification and emulsification ability is not strong under the high temperature cleaning of 70-85 ℃, resulting in the surface of the steel plate is often not cleaned cleanly, which affects the product quality

Method used

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  • High-temperature degreasing agent for treatment before auto coating surface adjustment and degreasing method thereof
  • High-temperature degreasing agent for treatment before auto coating surface adjustment and degreasing method thereof

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Embodiment 1

[0024] The present embodiment configures the pretreatment high-temperature degreasing agent for automobile coating surface adjustment according to the following steps: get 50% of sodium hydroxide by weight percentage, 30% of trisodium phosphate, 10% of sodium carbonate, 6% of sodium dodecylbenzenesulfonate, Triethanolamine 4%, these raw materials are mixed evenly.

[0025] This embodiment also provides a method for using the degreasing agent to degrease the surface of the car before the surface adjustment, and the steps are as follows:

[0026] 1) Heat the desalted water working solution to 70°C;

[0027] 2) Spraying process: Take part of the desalted water working fluid, add 5% high-temperature degreasing agent, mix well and then spray the surface of the metal workpiece to be treated, spraying time 2min, pressure 0.15MPa;

[0028] 3) Dipping process: take part of the desalted water working solution, add 3% high-temperature degreasing agent, fully mix and then perform full di...

Embodiment 2～5

[0032] According to the component ratio in Table 1, configure the high-temperature degreasing agent for surface conditioning of automobiles.

[0033] Each embodiment component formula table of table 1

[0034] Element

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Abstract

The invention discloses a high-temperature degreasing agent for treatment before auto coating surface adjustment and a degreasing method thereof. The high-temperature degreasing agent is prepared by mixing the following components in percentage by weight: 30-50 percent of strong alkali, 30-50 percent of soluble phosphate, 10-20 percent of soluble carbonate, 3-6 percent of a surfactant and 3-6 percent of a stabilizing agent. The degreasing method comprises the following steps: heating desalted water working liquid to 70-85 DEG C, adding different percentages of normal-temperature degreasing agents, and degreasing an automobile steel plate through three processes of spraying, immersing and washing. The high-temperature degreasing agent disclosed by the invention is excellent in cleaning performance, can adapt to a faster automotive coating production line and effectively solves the problem of unclean steel plate surface cleaning.

Description

technical field [0001] The invention relates to a high-temperature degreasing agent, in particular to a high-temperature degreasing agent for the pre-conditioning treatment of automobile coating surfaces and a degreasing method thereof. Background technique [0002] The chemical degreasing process is an important pre-treatment link in the automobile painting process. It mainly uses lye to saponify, emulsify and dissolve the oil to remove the oil on the surface of the workpiece. The surface chemical cleaning treatment process must be carried out before surface adjustment to remove oil particles and other surface residues on the metal surface. If the oil removal is not clean during the pre-treatment, the oil will be brought into the subsequent process, which will affect the product quality. The treatment effect is good or bad. It is the key to ensure the quality of the paint film. [0003] The chemical degreasing process generally uses a combination of spraying and immersion....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/14
CPCC23G1/14
Inventor 黄先球马颖郎丰军彭浩程鹏庞涛宋建红黄菲何锐李安平
Owner 武汉钢铁有限公司