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Metal part surface polishing technology

A technology of surface polishing and metal parts, which is applied in the field of metal parts processing, can solve the problems of corrosion, wear and scratches, etc., and achieve the effect of ensuring smoothness, avoiding excessive corrosion, and smooth grinding

Active Publication Date: 2016-03-30
深圳誉格金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal parts are vulnerable to mechanical damage during processing and forming, resulting in surface defects such as scratches and wear
The existence of these defects not only affects the surface smoothness and surface brightness, but also affects its chemical stability, especially the surface defects are prone to corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A metal surface polishing process is characterized in that the steps include:

[0029] (1) Degreasing

[0030] Before degreasing the metal parts, use 40-grit sandpaper to polish the surface of the metal parts, wash the metal parts with a mixture of detergent 20ml / L and trisodium phosphate 5g / L, and then pickle after cleaning and drying ;

[0031] (2) pickling

[0032] Carry out pickling in 10% (volume) sulfuric acid solution, temperature is 30 ℃;

[0033] (3) washing

[0034] Wash metal parts in flowing water with a water velocity of 1.2m / s;

[0035] (4) Second pickling

[0036] Use the mixed acid of concentrated nitric acid and hydrofluoric acid with a mass ratio of 2:1, add 10% corrosion inhibitor to the washing solution, and pickle the workpiece for 10s;

[0037] (5) Second washing

[0038] Wash the metal parts in the flowing water, the water speed is 1.2m / s, and dry the metal parts after cleaning, and the drying method is air drying;

[0039] (6) Vibration p...

Embodiment 2

[0046] A metal surface polishing process is characterized in that the steps include:

[0047] (1) Degreasing

[0048] Before degreasing the metal parts, use 40-grit sandpaper to polish the surface of the metal parts, wash the metal parts with a mixture of detergent 22ml / L and trisodium phosphate 8g / L, and then pickle after cleaning and drying ;

[0049] (2) pickling

[0050] Carry out pickling in 15% (volume) sulfuric acid solution, temperature is 38 ℃;

[0051] (3) washing

[0052] Wash metal parts in flowing water with a water velocity of 1.5m / s;

[0053] (4) Second pickling

[0054] Use the mixed acid of concentrated nitric acid and hydrofluoric acid with a mass ratio of 2:1, add 10% corrosion inhibitor to the washing solution, and pickle the workpiece for 10s;

[0055] (5) Second washing

[0056] Wash the metal parts in flowing water at a water speed of 1.5m / s. After cleaning, the metal parts are dried, and the drying method is air-dried;

[0057] (6) Vibration pol...

Embodiment 3

[0064] A metal surface polishing process is characterized in that the steps include:

[0065] (1) Degreasing

[0066] Before degreasing the metal parts, use 40-grit sandpaper to polish the surface of the metal parts, wash the metal parts with a mixture of detergent 25ml / L and trisodium phosphate 10g / L, and then pickle after cleaning and drying ;

[0067] (2) pickling

[0068] Carry out pickling in 20% (volume) sulfuric acid solution, temperature is 40 ℃;

[0069] (3) washing

[0070] Wash metal parts in flowing water with a water velocity of 2.0m / s;

[0071] (4) Second pickling

[0072]Use the mixed acid of concentrated nitric acid and hydrofluoric acid with a mass ratio of 2:1, add 10% corrosion inhibitor to the washing solution, and pickle the workpiece for 15s;

[0073] (5) Second washing

[0074] Wash the metal parts in the flowing water, the water speed is 2.0m / s, and dry the metal parts after cleaning, and the drying method is air drying;

[0075] (6) Vibration p...

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Abstract

The invention discloses a metal part surface polishing technology. Multi-time acid pickling and washing are additionally carried out to thoroughly clear away rust, impurities and oxidation layers on the surface of a metal part, and meanwhile, the double polishing technology including physical polishing and chemical polishing is adopted for polishing, and smoothness of the surface of the metal part is ensured; before oil on the metal part is removed, 40-mesh abrasive paper is used for polishing the surface of the metal part, and therefore the rust, impurities and the like on the surface can be put away in advance; after secondary washing is carried out, the metal part is aired in a drying manner, and after the metal part is washed, acid liquid still residues, and therefore the airing manner is adopted to facilitate volatilization of the acid liquid; the diameter of steel balls for polishing is 3 mm, the steel balls with the diameter can polish all positions of the surface of the metal part, and meanwhile, the polishing efficiency cannot be affected; and the concentration of a polishing agent is 30 g / L, and under the effect of the thick polishing agent, the metal part can be polished more smoothly.

Description

technical field [0001] The invention relates to the field of metal parts processing, in particular to a metal part surface polishing process. Background technique [0002] Metal surface treatment technology refers to the use of physical or chemical methods to process the metal surface in order to achieve the purpose of improving the physical or chemical properties of the metal surface. Metal parts are vulnerable to mechanical damage during processing and forming, resulting in surface defects such as scratches and wear. The existence of these defects not only affects the surface smoothness and surface brightness, but also affects its chemical stability, especially the surface defects are prone to corrosion. In order to eliminate these surface defects during processing, mechanical polishing, chemical polishing or electrochemical polishing are usually used to obtain a good surface finish. Contents of the invention [0003] A metal surface polishing process is characterized ...

Claims

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Application Information

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IPC IPC(8): C23F3/00C23G1/02C23G1/04B24B31/06
Inventor 郑臣钏
Owner 深圳誉格金属制品有限公司
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