Aluminium alloy surface alkaline degreasing agent

An aluminum alloy surface, alkaline degreasing technology, applied in the field of degreasing agents, can solve problems such as damage to human health, corrosion of active substrates, environmental protection requirements, etc., and achieve the effects of energy saving, good gloss, and reduction of waste lye discharge.

Inactive Publication Date: 2012-11-21
CHONGQING WANLI LIANXING IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the common inorganic degreasers on the market contain oil and a large amount of strong alkaline substances such as sodium hydroxide, and some also have highly toxic sodium cyanide, which will corrode the active substrate. High temperature can play a role. At this time, the volatilized alkali mist will serio

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0013] Take 20 parts of mixed alkali (mixed alkali is a mixture of sodium carbonate, sodium hydroxide and trisodium phosphate, wherein the weight ratio of sodium carbonate: sodium hydroxide: trisodium phosphate is 3: 0.5: 3), op-10 emulsifier 1 part, add 1000 parts of water, stir and mix evenly, and measure the pH to be 11-14. When in use, place the mixed solution in an alkaline tank, and soak the substrate in it for 1-5 minutes at room temperature. When the oil stain is too heavy, it can be properly heated to 40°C.

specific Embodiment 2

[0014] Get 25 parts of mixed alkali (the mixed alkali is the mixture of sodium carbonate, sodium hydroxide and trisodium phosphate, by weight sodium carbonate: sodium hydroxide: trisodium phosphate is 4: 1.5: 3), op-10 emulsifier 2 parts, add 1000 parts of water, stir and mix evenly, the measured pH is 11-14. When in use, place the mixed solution in an alkaline tank, and soak the substrate in it for 1-5 minutes at room temperature. When the oil stain is too heavy, it can be properly heated to 40°C.

specific Embodiment 3

[0015] Get 35 parts of mixed alkali (the mixed alkali is the mixture of sodium carbonate, sodium hydroxide and trisodium phosphate, sodium carbonate by weight: sodium hydroxide: trisodium phosphate is 3: 1: 3), op-10 emulsifier 4 parts, add 1000 parts of water, stir and mix evenly, the measured pH is 11-14. When in use, the mixed solution is placed in an alkaline tank, and the matrix is ​​soaked in it for 1-5 minutes at normal temperature. When the oil pollution is too heavy, it can be properly heated to 40°C.

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PUM

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Abstract

The invention discloses an aluminium alloy surface alkaline degreasing agent which is characterized by comprising the following components in parts by weight: 20 to 40 parts of mixed base, 1 to 5 parts of op-10 emulsifier and 1,000 parts of water, wherein the mixed base is a mixture of sodium carbonate, sodium hydroxide and trisodium phosphate and the weight ratio of the sodium carbonate to the sodium hydroxide to the trisodium phosphate is (3 to 4):(0.5 to 1.5):(3 to 4). The aluminium alloy surface alkaline degreasing agent has a strong effect of removing oil stain, has slight corrosion to an aluminium base and has good gloss. The aluminium alloy surface alkaline degreasing agent can be operated at normal temperature, energy is saved and the acid mist overflowing and the waste alkali discharge are reduced, so that the damage to human bodies and the pollution to the environment are reduced in the production link.

Description

technical field [0001] The invention relates to a degreasing agent, in particular to an alkaline degreasing agent on the surface of an aluminum alloy. Background technique [0002] In order to prevent the surface of aluminum alloy or aluminum steel from being oxidized by oxygen in the air, there will be a layer of grease on the surface of the substrate to protect it. The grease must be cleaned before electroplating, otherwise it will cause defects in the electroplating layer, such as pinholes and burrs etc. In severe cases, it will lead to electroplating failure and rework, causing the plating solution to lose balance and stability. Therefore, it is very important to choose a high-quality degreasing product during the electroplating process. [0003] Commonly used degreasing products include organic and inorganic products. Commonly used organic products include toluene, xylene, trichlorethylene, etc. Although they can directly dissolve oil, they usually have a pungent odor...

Claims

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Application Information

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IPC IPC(8): C23G1/22
Inventor 刘国春
Owner CHONGQING WANLI LIANXING IND GROUP
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