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Environment-friendly inter-process antirust liquid

An inter-process anti-rust and environment-friendly technology, applied in the field of anti-rust liquid, to achieve the effect of economical and reasonable discoloration prevention, good discoloration and anti-corrosion protection, and economical and reasonable anti-corrosion effect.

Inactive Publication Date: 2014-03-26
CHENGDU AIRCRAFT INDUSTRY GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also some water-based anti-rust agents containing silicon and phosphorus. The presence of silicon in this type of anti-rust agent will have a certain impact on the subsequent surface treatment (electroplating, etc.) of the parts, and the existence of phosphorus will bring some environmental problems.

Method used

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  • Environment-friendly inter-process antirust liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Preparation of antirust solution

[0029] 1) Preparation of basic components:

[0030] Add 6g of chitosan and 0.15g of polyethylene glycol into 60mL of deionized water to prepare the basic components;

[0031] 2) Preparation of standard antirust solution:

[0032] I. Add 4.5g of phytic acid and 7g of triethanolamine into 200mL of deionized water, then add the basic components prepared in step 1) into the resulting solution, and add deionized water to 1L;

[0033] II. Use 1 mol / L potassium hydroxide deionized aqueous solution to adjust the pH value of the antirust solution to 7.5 before use.

[0034] 2. Pretreatment of samples

[0035] The materials used in the test process include: 2A12 aluminum alloy, H62 brass and 45# carbon steel, which are processed according to the following steps for later use.

[0036] The treatment process for 2A12 aluminum alloy is: degreasing→water washing→removing clad aluminum→water washing→lighting→water washing→drying. Wherein the...

Embodiment 2

[0063] 1. Preparation of antirust solution

[0064] 1) Preparation of basic components:

[0065] Add 2g of chitosan and 0.015g of polyethylene glycol into 60ml of deionized water to prepare the basic components;

[0066] 2) Preparation of standard antirust solution:

[0067] I. Add 1.5g of phytic acid and 1g of triethanolamine to 200ml of deionized water, then add the basic components prepared in step 1) into the resulting solution, and add deionized water to 1L;

[0068] II. Use 1 mol / L potassium hydroxide deionized aqueous solution to adjust the pH value of the antirust solution to 7.5 before use.

[0069] 2. Sample pretreatment

[0070] The materials used in the test process include: 2A12 aluminum alloy, H62 brass and No. 45 steel, which are prepared according to the following steps.

[0071] The treatment process for 2A12 aluminum alloy is: degreasing→water washing→removing clad aluminum→water washing→lighting→water washing→drying. Wherein the solution composition ...

Embodiment 3

[0099] 1. Preparation of antirust solution

[0100] 1) Preparation of basic components:

[0101] Add 20g of chitosan and 0.5g of polyethylene glycol into 60ml of deionized water to prepare the basic components;

[0102] 2) Preparation of standard antirust solution:

[0103] I. Add 10.5g of phytic acid and 15g of triethanolamine into 200ml of deionized water, then add the basic components prepared in step 1) into the resulting solution, and add deionized water to 1L;

[0104] II. Use 1 mol / L potassium hydroxide deionized aqueous solution to adjust the pH value of the antirust solution to 7.5 before use.

[0105] 2. Sample pretreatment

[0106] The materials used in the test process include: 2A12 aluminum alloy, H62 brass and No. 45 steel, which are prepared according to the following steps.

[0107] The treatment process for 2A12 aluminum alloy is: degreasing→water washing→removing clad aluminum→water washing→lighting→water washing→drying. Wherein the solution compositi...

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Abstract

The invention discloses antirust liquid which can be suitable for inter-process rust prevention and color change prevention treatment on the surfaces of aluminum alloy, copper alloy and iron parts. The environment-friendly inter-process antirust liquid disclosed by the invention is an aqueous solution and comprises 2-20g / L of chitosan, 0.01-0.5g / L of polyethylene glycol, 1-15g / L of phytic acid and 1-20g / L of triethanolamine. The pH value of the environment-friendly neutral antirust liquid is 7.0-8.0. The environment-friendly inter-process antirust liquid can be applied to inter-process anti-rust treatment of machining of part surfaces after being diluted with water according to the proportion of 10-100 percent according to use environments. The antirust liquid can be applied to inter-process anti-rust of the surfaces of aluminum alloy, copper alloy and iron machined parts, and is an environment-friendly water-based antirust agent.

Description

[0001] technical field [0002] The invention relates to an antirust treatment method for the surface of metal parts between processes, in particular to an antirust liquid suitable for the surfaces of aluminum, copper, and steel materials. Background technique [0003] Corrosion of metal materials is a problem often encountered in the production process. When multiple processing procedures are required, due to poor storage or harsh environment, parts will corrode and rust between processes, which not only affects the use effect and function of parts , and a waste of resources. According to statistics, tens of millions of tons of iron and steel are scrapped due to rust every year in the world, and the economic loss caused by material corrosion in my country in 2000 was also as high as 500 billion yuan. Some advanced developed countries in the world, such as the United States and Japan, attach great importance to the anti-rust work in the processing of metal parts, and have ...

Claims

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Application Information

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IPC IPC(8): C23F11/173
Inventor 程红霞王利华王力强彭涛朱立群李卫平杨素心
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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