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Magnesium alloy chemical polishing technology

A technology of chemical polishing and magnesium alloy, which is applied in the field of metal surface treatment technology, can solve the problems of large consumption of liquid medicine, difficult processing time, unfavorable use, etc., and achieve the effect of simple polishing process and improved polishing effect

Inactive Publication Date: 2017-05-17
南通德益化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the surface polishing process of magnesium alloys, most of them are treated with chromic anhydride, phenol, etc., and the processing time is difficult to control, and the consumption of chemical solution is also large, which is not conducive to actual use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A magnesium alloy chemical polishing process, through the steps of preparing polishing solution, pretreatment, chemical polishing and posttreatment, completes the magnesium alloy chemical polishing process; the specific steps are as follows:

[0013] (1) Make a polishing solution: add 30% oxalic acid and 1g sulfuric acid to 1L of water, stir well to make a polishing solution;

[0014] (2) Pretreatment: Clean the magnesium alloy workpiece to remove surface oil;

[0015] (3) Chemical polishing: soak the cleaned magnesium alloy workpiece in the polishing solution for 10 minutes;

[0016] (4) Post-processing: After polishing, the workpiece is cleaned and dried by ultrasonic waves.

Embodiment 2

[0018] A magnesium alloy chemical polishing process, through the steps of preparing polishing solution, pretreatment, chemical polishing and posttreatment, completes the magnesium alloy chemical polishing process; the specific steps are as follows:

[0019] (1) Make a polishing solution: Add 60g of nitric acid, 60g of oxalic acid and 5g of sulfuric acid into 1L of water, stir well to make a polishing solution;

[0020] (2) Pretreatment: Clean the magnesium alloy workpiece to remove surface oil;

[0021] (3) Chemical polishing: soak the cleaned magnesium alloy workpiece in the polishing solution for 14 minutes;

[0022] (4) Post-processing: After polishing, the workpiece is cleaned and dried by ultrasonic waves.

Embodiment 3

[0024] A magnesium alloy chemical polishing process, through the steps of preparing polishing solution, pretreatment, chemical polishing and posttreatment, completes the magnesium alloy chemical polishing process; the specific steps are as follows:

[0025] (1) Make a polishing solution: Add 45g of nitric acid, 40g of oxalic acid and 3g of sulfuric acid into 1L of water, stir well to make a polishing solution;

[0026] (2) Pretreatment: Clean the magnesium alloy workpiece to remove surface oil;

[0027] (3) Chemical polishing: soak the cleaned magnesium alloy workpiece in the polishing solution for 12 minutes;

[0028] (4) Post-processing: After polishing, the workpiece is cleaned and dried by ultrasonic waves.

[0029] The invention greatly improves the polishing effect by rationally preparing the polishing liquid, and the polishing process is simple.

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PUM

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Abstract

The invention discloses a magnesium alloy chemical polishing technology, which comprises the steps of preparing a polishing solution, performing pre-treatment, performing chemical polishing and performing post-treatment to complete the chemical polishing technology on a magnesium alloy. The method comprises the following concrete steps: 1) preparing the polishing solution: adding 30-60 g of nitric acid, 20-60 g of oxalic acid and 1-5 g of sulfuric acid in 1 L of water, uniformly stirring the components to prepare the polishing solution; 2) performing pre-treatment: cleaning a magnesium alloy workpiece, removing the oil stain on the surface; 3) performing chemical polishing: placing the cleaned magnesium alloy workpiece in the polishing solution for immersion for 10-14 min; and 4) performing post-treatment: after polishing is completed, cleaning the workpiece by employing supersonic wave, and drying the workpiece. The technology has the advantages that by preparing the polishing solution in a reasonable mode, the polishing effect is greatly increased, and the polishing process is simple.

Description

technical field [0001] The invention belongs to a metal surface treatment process, in particular to a magnesium alloy chemical polishing process. Background technique [0002] Magnesium alloy has the advantages of light weight, high specific strength, small elastic modulus, anti-electromagnetic interference, good shielding, strong shock absorption, good processing performance and good thermal conductivity. It has been widely used in national defense, electronic appliances, etc. application. However, in the surface polishing process of magnesium alloys, most of them are treated with chromic anhydride, phenol, etc., and the treatment time is difficult to control, and the consumption of chemical solution is also large, which is not conducive to actual use. Contents of the invention [0003] The object of the present invention is to aim at the deficiencies of the prior art, and now provide a magnesium alloy chemical polishing process with simple process and less chemical solu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F3/03
Inventor 贾庆山马海兵
Owner 南通德益化工有限公司
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