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Electrolytic polishing method for aluminum alloy workpieces

A technology of electrolytic polishing and aluminum alloy, which is applied in the field of aluminum alloy polishing to achieve high surface finish and good polishing effect

Inactive Publication Date: 2015-04-29
HUZHOU QIANJIN BAOYUN MACHINERY CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be used for processing aluminum alloy workpieces with complex shapes and high brightness requirements

Method used

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Examples

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the examples, but not as a basis for limiting the present invention.

[0011] Example. An electrolytic polishing method for an aluminum alloy workpiece. A polishing solution is prepared in an electrolytic cell, and the polishing solution is prepared by using 55% concentrated phosphoric acid with a concentration of 85% and 10% concentrated sulfuric acid with a concentration of 98%. , 15% YB-66 additive and 20% water. During electropolishing, the polishing liquid is heated to 60°C and the current density is 17-20A / dm 2 , The electropolishing time is 3 to 5 minutes. The ratio of the cathode area to the anode area in the electrolytic cell is 2-3:1. A vibrating device is arranged in the electrolytic tank to make the whole electrolytic tank vibrate at high frequency during the electrolytic polishing process. The aluminum alloy workpiece must be degreased before entering the electrolytic cell, using a...

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Abstract

The invention discloses an electrolytic polishing method for aluminum alloy workpieces. A polishing solution is prepared in an electrolytic tank and is prepared from, by mass, 55% of strong phosphoric acid with a concentration of 85%, 10% of strong phosphoric acid with a concentration of 98%, 15% of a YB-66 additive and 20% of water. During electrolytic polishing, the polishing solution is heated to reach 60 DEG C, the current density is 17-20A / dm2, and the time of electrolytic polishing lasts for 3-5 minutes. The polishing electrolytic solution used in the method can achieve a better polishing effect by being matched with the specific current density and a cathode and anode area proportion; additionally, high-frequency vibration is used in the polishing process, and accordingly, grooves of the workpieces can be fully subjected to electrolysis. The electrolytic polishing method can be used for the aluminum alloy workpieces with complicated structures and can meet a requirement for high surface smoothness.

Description

technical field [0001] The invention relates to an aluminum alloy polishing method, in particular to an electrolytic polishing method for an aluminum alloy workpiece. Background technique [0002] Aluminum is an element abundant in nature. Pure aluminum has the advantages of light weight, good ductility, easy processing, and corrosion resistance, but its mechanical strength is poor. Although some aluminum alloys have high mechanical strength, they have disadvantages such as poor corrosion resistance, low wear resistance, and poor decoration. Therefore, in practical applications, it is necessary to carry out surface treatment to improve its surface state. The surface polishing of aluminum and aluminum alloy can be used not only as a final treatment of surface processing, but also as a pretreatment process before anodizing and electroplating. Many literatures at home and abroad have reported the surface polishing process of aluminum and aluminum alloys. In summary, there ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/20
Inventor 沈文宝
Owner HUZHOU QIANJIN BAOYUN MACHINERY CASTING
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