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Titanium and titanium alloy electrochemical polishing liquid and polishing method

A technology of electrochemistry and polishing liquid, applied in the direction of electrolysis process, electrolysis components, etc., to achieve the effect of strong stability

Active Publication Date: 2017-12-12
宝鸡市同业精密科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a safe, simple, stable, reusable, and less corrosive to equipment electrochemical polishing solution for titanium and titanium alloys against the defects of existing titanium and titanium alloy electrochemical polishing solutions

Method used

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  • Titanium and titanium alloy electrochemical polishing liquid and polishing method
  • Titanium and titanium alloy electrochemical polishing liquid and polishing method
  • Titanium and titanium alloy electrochemical polishing liquid and polishing method

Examples

Experimental program
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Embodiment 1

[0050] A method for electrochemical polishing of titanium and titanium alloy workpieces, comprising the steps in turn:

[0051] (1) Polish the titanium alloy workpiece with metallographic sandpaper of 400 mesh, 600 mesh, 800 mesh, 1000 mesh and 1200 mesh in sequence, and ultrasonically clean the workpiece in the order of deionized water, acetone, absolute ethanol and deionized water after polishing ;

[0052] (2) According to HF: HNO 3 :H 2 The volume ratio of O is 3:10:87 to prepare a mixed acid solution, soak the workpiece in the acid solution for 1min, take it out, rinse it with deionized water and dry it;

[0053] (3) Using glycerin as a solvent, measure 400mL of glycerin, add 400ml of ethylene glycol, 200mL of ethanol, 1mL of perchloric acid, 40g of sodium chloride, 1g of citric acid, 0.5g of glucose and 0.5g of urea in sequence under stirring, and stir evenly Obtain an electrolytic polishing solution;

[0054] (4) Fully immerse the titanium alloy workpiece in the ele...

Embodiment 2

[0058] A method for electrochemical polishing of titanium and titanium alloy workpieces, comprising the steps in turn:

[0059] (1) Polish the titanium metal workpiece with 400 mesh, 600 mesh, 800 mesh, 1000 mesh and 1200 mesh metallographic sandpaper in sequence. After polishing, perform ultrasonic cleaning on the workpiece in the order of deionized water, acetone, absolute ethanol and deionized water ;

[0060] (2) According to HF: HNO 3 :H 2 The volume ratio of O is 3:10:87 to prepare a mixed acid solution, soak the workpiece in the acid solution for 1min, take it out, rinse it with deionized water and dry it;

[0061] (3) Using glycerin as a solvent, measure 400mL of glycerin, add 400ml of ethylene glycol, 200mL of ethanol, 1mL of perchloric acid, 40g of sodium chloride, 1g of citric acid, 0.5g of glucose and 0.5g of urea in sequence under stirring, and stir evenly Obtain an electrolytic polishing solution;

[0062] (4) Fully immerse the titanium metal workpiece in the...

Embodiment 3

[0066] A method for electrochemical polishing of titanium and titanium alloy workpieces, comprising the steps in turn:

[0067] (1) Polish the titanium alloy workpiece with metallographic sandpaper of 400 mesh, 600 mesh, 800 mesh, 1000 mesh and 1200 mesh in sequence, and ultrasonically clean the workpiece in the order of deionized water, acetone, absolute ethanol and deionized water after polishing ;

[0068] (2) According to HF: HNO 3 :H 2 The volume ratio of O is 3:10:87 to prepare a mixed acid solution, soak the workpiece in the acid solution for 1min, take it out, rinse it with deionized water and dry it;

[0069] (3) Using glycerin as a solvent, measure 700 mL of glycerin, add 250 mL of ethylene glycol, 50 mL of ethanol, 10 mL of perchloric acid, 15 g of sodium chloride, 1 g of tartaric acid, 0.5 g of sulfamic acid and 0.5 g of glucose in sequence under stirring, and stir Obtain electrolytic polishing liquid evenly;

[0070] (4) Fully immerse the titanium alloy workpi...

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Abstract

The invention discloses titanium and titanium alloy electrochemical polishing liquid and a polishing method. The electrochemical polishing liquid comprises the following components: 10-40 g / L of sodium chloride, 40-70% of glycerin, 20-40% of glycol, 5-20% of anhydrous ethanol, 0.1-1% of perchloric acid, and 1-5 g / L of additive; and the additive consists of an accelerator, a leveling agent and a brightening agent. Substances contained in the electrochemical polishing liquid are environment-friendly and nontoxic; no poisonous gas is generated in the electrochemical polishing process; after titanium and titanium alloy workpieces are electrochemically polished by the electrochemical polishing liquid, the surfaces present specular gloss, and the average roughness can be reduced below 10 nm; the electrochemical polishing liquid is weak in corrosion capacity and low in corrosion of electrolysis equipment, and can be used for a long time; only mother liquor needs to be fed in the electrochemical polishing liquid; and the electrochemical polishing liquid can be reused by above 500 times, and is high in stability.

Description

technical field [0001] The invention belongs to the field of metal treatment, and in particular relates to an electrochemical polishing liquid and a polishing method applied to titanium and its titanium alloy. Background technique [0002] Titanium and titanium alloys have a series of excellent characteristics such as low density, good corrosion resistance, and high specific strength, so they are widely used in various fields such as aviation, aerospace, and medical treatment. However, with the continuous improvement of the requirements for the smooth surface of titanium and titanium alloys in various industries, it is particularly important to prepare titanium and titanium alloys with bright and smooth surfaces. [0003] At present, there are many methods for smoothing the surface of titanium and titanium alloys, which are mainly divided into three methods: mechanical polishing, chemical polishing and electrochemical polishing. [0004] Mechanical polishing is a polishing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F7/00C25F3/26
CPCC25F3/26C25F7/00
Inventor 黄培陈峰
Owner 宝鸡市同业精密科技有限责任公司
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