Energy-saving environmental-friendly zirconium treatment process before coating

A treatment process and coating technology, which is applied in the field of metal coating pretreatment, can solve the problems of large environmental pollution and high energy consumption of medium temperature phosphating, and achieve the effects of less investment, lower method cost and simplified steps

Inactive Publication Date: 2013-05-01
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide an energy-saving and environment-friendly zirconization treatment process b

Method used

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  • Energy-saving environmental-friendly zirconium treatment process before coating
  • Energy-saving environmental-friendly zirconium treatment process before coating
  • Energy-saving environmental-friendly zirconium treatment process before coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Zirconization treatment before embodiment 1 cold-rolled steel plate coating

[0033] 1. Preparation of materials

[0034] Workpiece: cold-rolled steel plate

[0035] Pre-degreasing agent: Dalian Jiuhe Surface Technology Co., Ltd. Degreasing agent 625

[0036] Main degreasing agent: Dalian Jiuhe Surface Technology Co., Ltd. degreasing agent 625

[0037] Zirconating agent: JH901 and JH-902 were purchased from Dalian Jiuhe Surface Technology Co., Ltd.

[0038] 2. The zirconium treatment process before painting includes the following steps:

[0039] The process of treatment method is: pre-degreasing → main degreasing → first water washing → second water washing → zirconization treatment → three times water washing → drying → coating.

[0040] See Table 1 for the conditions of each step in the process of the above method.

[0041] Table 1 Conditions of each step of zirconization treatment process before painting

[0042]

[0043] ①Pre-degreasing: The workpiece is de...

Embodiment 2

[0053] Example 2 Detection of workpiece performance after zirconization treatment before coating

[0054] The galvanized sheet (Baosteel, Coil No. 440WD Z) and the aluminum sheet (5754 aluminum sheet of Shenyang Libaida Aluminum Co., Ltd.) treated according to the method of Example 1 were coated and tested for coating performance. The paint used for painting is epoxy powder paint from Beijing Shenglianda Metal Powder Co., Ltd.

[0055] Primary adhesion test: After forming 100 square grids of 1 mm with a 100 grid knife, peel off with cellophane tape, and evaluate by the number of coating films.

[0056] Secondary adhesion test: After immersing the coated workpiece in boiling water for two hours, conduct the same test and evaluation as the primary adhesion.

[0057] Impact test: According to GB / T 1732-1993 paint film impact resistance test method.

[0058] Cupping test: according to GB9753-88 paint and varnish cupping test.

[0059] Salt spray test: Neutral salt spray test (N...

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Abstract

The invention provides an energy-saving environmental-friendly zirconium treatment process before coating. The process sequentially comprise the steps of pre-degreasing, mainly degreasing, washing for the first time, washing for the second time, performing zirconium treatment, washing for the third time, drying and coating. The treatment process does not need heating and surface adjustment and solves the problems of high energy consumption and high environmental pollution caused by medium-temperature phosphorization. Compared with the traditional phosphorization treatment process before coating, the process provided by the invention has the advantages that the new line building cost is reduced; the pretreatment comprehensive energy consumption is greatly reduced; and the problem about sediment generated by the phosphorization technology and the problem about emission of serious environmental pollution products such as phosphorus, nitrous compounds and heavy metal nickel are solved, so that the emission amount of the pollutants is greatly reduced.

Description

technical field [0001] The invention belongs to the energy-saving and environment-friendly utilization technology in the field of metal coating pretreatment, and relates to an energy-saving and environment-friendly zirconization treatment process before coating. Background technique [0002] Metal materials will be corroded by corrosive media, moisture and oxygen in the air during use. The problem of metal corrosion pervades all sectors of the national economy and national defense construction, and metal corrosion has caused huge losses to the national economy. According to the statistics of developed countries, the annual loss due to corrosion accounts for 1% to 4% of the gross national product. According to the statistics of the authoritative department of our country, the annual loss due to corrosion accounts for 4% of the gross national product in our country. Therefore, the application of metal corrosion protection technology is very important. Among various anti-corr...

Claims

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Application Information

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IPC IPC(8): C23C22/34C23C22/78
Inventor 曲丰作徐同宽王大鸷崔励张绍印
Owner DALIAN POLYTECHNIC UNIVERSITY
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