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Aluminium alloy coating agent

An aluminum alloy and film technology, applied in the direction of metal material coating process, etc., can solve the problems of complex operation, high process condition control requirements, not suitable for online oxidation, etc., and achieve the effect of not easy to peel off.

Inactive Publication Date: 2017-10-20
HEFEI TAITONG REFRIGERATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used chemical oxidation method has defects such as high control requirements for process conditions, complicated operation, and poor physical properties of the oxide film, and is not suitable for on-line oxidation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] An aluminum alloy film reagent, the raw materials and parts by weight of the film reagent are 25 parts of succinic acid, 8 parts of sodium molybdate, 10 parts of sodium nitrate, 10 parts of sodium fluoride, 3 parts of glycolic acid, 3 parts of glycolic acid 7 parts, 10 parts of oxalic acid, 30 parts of water. The aluminum alloy film reagent is obtained by mixing the above raw materials, and the prepared aluminum alloy film reagent is added to the bath solution to coat the aluminum alloy for 2-3 minutes.

Embodiment 2

[0012] An aluminum alloy film reagent, the raw materials and parts by weight of the film reagent are: 40 parts of succinic acid, 15 parts of sodium molybdate, 20 parts of sodium nitrate, 30 parts of sodium fluoride, 20 parts of glycolic acid, glycolic acid 15 parts of acid, 12 parts of oxalic acid, 40 parts of water. The aluminum alloy film reagent is obtained by mixing the above raw materials, and the prepared aluminum alloy film reagent is added to the bath solution to coat the aluminum alloy for 2-3 minutes.

Embodiment 3

[0014] An aluminum alloy film reagent, the raw materials and parts by weight of the film reagent are: 45 parts of succinic acid, 20 parts of sodium molybdate, 30 parts of sodium nitrate, 50 parts of sodium fluoride, 33 parts of glycolic acid, 20 parts of acid, 15 parts of oxalic acid, 50 parts of water. The aluminum alloy film reagent is obtained by mixing the above raw materials, and the prepared aluminum alloy film reagent is added to the bath solution to coat the aluminum alloy for 2-3 minutes.

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PUM

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Abstract

The invention relates to the technical field of aluminium pipe surface treatment, and particularly belongs to an aluminium alloy coating agent. The coating agent is prepared from the following raw materials in parts by weight: 25 to 45 parts of succinic acid, 8 to 20 parts of sodium molybdate, 10 to 30 parts of sodium nitrate, 10 to 50 parts of sodium fluoride, 3 to 33 parts of glycolic acid, 7 to 20 parts of glycolic acid, 10 to 15 parts of oxalic acid and 30 to 50 parts of water. The aluminium alloy coating agent provided by the invention is a phosphorus-free coating agent. The phosphorus-free coating agent cannot cause environment pollution in use and a generated membrane does not fall off easily.

Description

technical field [0001] The invention relates to the technical field of aluminum tube surface treatment, in particular to an aluminum alloy film reagent. Background technique [0002] In the manufacture of refrigerators (evaporator and condenser), cheap aluminum tubes are often used as refrigeration piping parts. However, aluminum tubes have active chemical properties and poor corrosion resistance. Moreover, the aluminum tube material has low hardness and poor wear resistance. . [0003] In the field of refrigeration processing technology, the anti-corrosion treatment of extruded aluminum tubes is a relatively important processing section and an important factor that directly affects the quality of formed products. Therefore, the aluminum tube must undergo corresponding surface treatment before use to improve its hardness, wear resistance and corrosion resistance. At present, the commonly used chemical oxidation method has defects such as high control requirements for proce...

Claims

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Application Information

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IPC IPC(8): C23C22/46
CPCC23C22/46
Inventor 时乾中李春肖翔王子俊
Owner HEFEI TAITONG REFRIGERATION TECH CO LTD