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Aluminum surface ash removing agent and preparation method thereof, and surface ash removing method

A technology of ash removal agent and aluminum material, which is applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problems of inconspicuous ash removal effect, fast ash removal speed, and slow ash removal speed, and achieve improved ash removal The effect of ash speed, smooth surface effect, and obvious ash removal effect

Inactive Publication Date: 2016-04-06
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects that the ash removal effect is not obvious and the ash removal speed is slow when using the aluminum material surface deashing agent of the prior art to remove the ash on the surface of high-silicon cast aluminum, and to provide a kind of aluminum material surface ash removal Agent and its preparation method and the method for carrying out surface deashing, when using aluminum material surface deashing agent of the present invention to carry out surface deashing to high-silicon cast aluminum, deashing effect is obvious and deashing speed is fast

Method used

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  • Aluminum surface ash removing agent and preparation method thereof, and surface ash removing method
  • Aluminum surface ash removing agent and preparation method thereof, and surface ash removing method
  • Aluminum surface ash removing agent and preparation method thereof, and surface ash removing method

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preparation example Construction

[0021] In a second aspect, the present invention provides a method for preparing an aluminum material surface dedusting agent, the method comprising: adding HNO 3 , NH 4 HF 2 , aluminum corrosion inhibitor and water are evenly mixed to obtain aluminum surface deashing agent, wherein, based on 1L aluminum surface deashing agent, HNO 3 The dosage is 540-720g, NH 4 HF 2 The dosage of aluminum corrosion inhibitor is 100-150g, the dosage of aluminum corrosion inhibitor is 1-8g, and the balance is water.

[0022] In order to improve the ash removal effect and ash removal speed of the prepared aluminum surface ash remover, preferably, in terms of 1L aluminum surface ash remover, HNO 3 The dosage is 585-675g, NH 4 HF 2 The dosage of aluminum corrosion inhibitor is 120-130g, the dosage of aluminum corrosion inhibitor is 2-4g, and the balance is water.

[0023] It should be understood by those skilled in the art that, in the preparation method of aluminum material surface dust re...

Embodiment 1

[0040] This embodiment is used to illustrate the aluminum material surface dust remover of the present invention and its preparation method.

[0041] Add 125g NH successively to the container 4 HF 2 , 685mL65vol% HNO 3 solution (d=1.40g / mL) and 100mL deionized water, stirred, and the NH 4 HF 2 After completely dissolving, add 3g of hexamethylenetetramine, continue to stir to completely dissolve the hexamethylenetetramine, and add the rest of deionized water to make the volume of the mixed solution 1L. After mixing evenly, you can get the aluminum material surface dust remover .

Embodiment 2

[0043] This embodiment is used to illustrate the aluminum material surface dust remover of the present invention and its preparation method.

[0044] Add 120g NH successively to the container 4 HF 2 , 643mL65vol% HNO 3 solution (d=1.40g / mL) and 100mL deionized water, stirred, and the NH 4 HF 2 After completely dissolving, add 2g of hexamethylenetetramine, continue to stir to completely dissolve the hexamethylenetetramine, and add the rest of deionized water to make the volume of the mixed solution 1L, and mix well to get the aluminum surface dust remover .

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Abstract

The invention discloses an aluminum surface ash removing agent and a preparation method thereof, and a surface ash removing method. The aluminum surface ash removing agent is mixed liquid prepared by uniformly mixing HNO3, NH4HF2, an aluminum corrosion inhibitor and water; and in terms of 1 L of the aluminum surface ash removing agent, the usage amount of HNO3 is 540 to 720 g, the usage amount of NH4HF2 is 100 to 150 g, and the usage amount of the aluminum corrosion inhibitor is 1 to 8 g, with the balance being water. The aluminum surface ash removing agent has ideal ash removing effect and a fast ash removing speed when applied to surface ash removal of high-silicon cast aluminum.

Description

technical field [0001] The invention relates to the technical field of aluminum material surface treatment, in particular to an aluminum material surface deashing agent, a preparation method thereof and a surface deashing method. Background technique [0002] The purpose of surface ash removal in the process of aluminum anodic oxidation is to remove the black hanging ash attachments remaining on the surface of the product after alkali etching, that is, to dissolve the difficult to form silicon, copper, iron, magnesium, etc. in the aluminum material during alkali etching. Dissolve the deposits to obtain a brighter metal surface, and also neutralize the residual alkali to prevent the electrolyte from being polluted. Therefore, the ash removal process is also called "light out" process. The ash removal process is the most critical process before anodizing, which is of great significance for obtaining a bright appearance. [0003] The currently commonly used aluminum surface d...

Claims

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Application Information

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IPC IPC(8): C23G1/12C23G1/06C25D11/16
Inventor 黄玉枭程俊陈梁
Owner BYD CO LTD
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