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Phosphatization technology for steel surface

A surface phosphating and process technology, applied in the direction of metal material coating process, etc., can solve the problems of high energy, poor quality effect, affecting the production efficiency and economic benefits of enterprises, etc., and achieves convenient and reliable operation, low cost, and satisfies large Large-scale industrial applications use the required effect

Inactive Publication Date: 2017-08-29
CHENGDU HONGYU TIMES TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current surface phosphating process consumes a lot of energy, and the quality effect is not good, which affects the production efficiency and economic benefits of the enterprise. Therefore, an improved technology is urgently needed to solve the above technical defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A steel surface phosphating process, comprising the following steps: (1) removing slag and grinding the steel material; (2) washing with water once for 10 minutes, and the washing temperature is 30°C; (3) removing oil, Utilize degreasing liquid to carry out degreasing to steel material surface; Described degreasing liquid comprises the NaOH of 30g / L, the NaOH of 35g / L 3 PO 4 , 30g / L Na 2 CO 3 and 5g / L Na 2 SiO 3 (4) Secondary washing, using clear water to wash for 5 minutes, and the washing temperature is 45°C; (5) Rust removal, using a rust removal solution to remove rust from the steel material; the rust removal solution is 150g / L HCl, the working temperature is room temperature, and the time for steel materials to be soaked in the derusting solution is 2 minutes; (6) Three times of water washing, using clean water for 30 minutes, and the washing temperature is 30°C; (7) Surface conditioning, using surface conditioning solution Steel materials are processed; the ...

Embodiment 2

[0021] A steel surface phosphating process, comprising the following steps: (1) removing slag and grinding the steel material; (2) washing with water once for 15 minutes, and the washing temperature is 35°C; (3) removing oil, Utilize degreasing liquid to carry out degreasing to steel material surface; Described degreasing liquid comprises the NaOH of 26g / L, the NaOH of 30g / L 3 PO 4 , 25g / L Na 2 CO 3 and 4g / L Na 2 SiO 3 (4) Second washing, use clear water to wash for 10 minutes, and the washing temperature is 40°C; (5) Rust removal, use the rust removal solution to remove rust from the steel material; the rust removal solution is 160g / L HCl, the working temperature is room temperature, and the steel material is soaked in the descaling solution for 1 minute; (6) Washing three times with clean water for 25 minutes, and the washing temperature is 35°C; (7) Surface conditioning, using surface conditioning solution Steel materials are processed; the surface adjustment liquid is...

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PUM

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Abstract

The invention relates to phosphatization technology for a steel surface. The phosphatization technology comprises the following steps: (1) deslagging and polishing a steel material; (2) performing first washing with water; (3) removing oil from the surface of the steel material by using an oil-removing liquid; (4) performing second washing with water; (5) derusting the steel material with a derusting liquid; (6) performing third washing with water; (7) treating the steel material with a surface conditioning liquid; (8) performing fourth washing with water; (9) phosphatizing the steel material with a phosphatizing liquid; (10) performing fifth washing with water; and (11) allowing the steel material to stand at the room temperature and performing baking. The technology is low in cost and convenient and reliable to operate. Through washing with water for several times and treatment with the oil-removing liquid, the derusting liquid and the surface conditioning liquid, an obvious phosphatization effect is achieved.

Description

technical field [0001] The invention relates to a steel surface treatment technology, in particular to a steel surface phosphating process. Background technique [0002] At present, metal phosphating treatment technology has been widely used, and has been applied to many fields such as automobiles, completed construction, electrical appliances, machinery, etc. Especially in the field of metal surface coating, the amount accounts for about 60%-70% of the total industrial use of phosphating treatment. Phosphating before painting is an indispensable main process in the pretreatment of metal painting. It can obviously improve the adhesion and protection ability of the coating. It is a pipe fitting technology to ensure the quality of painting. necessary process. Phosphating treatment technology can be applied to various black materials, zinc and its alloys, aluminum and its alloys, etc. The earliest and most widely used phosphating treatment technology is the phosphating of ste...

Claims

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Application Information

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IPC IPC(8): C23C22/78
CPCC23C22/78
Inventor 陈魏林建凌前武
Owner CHENGDU HONGYU TIMES TECH CO LTD
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