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Chemical etching preparation technology of titanium alloy and etching agent used in said technology

A technology of chemical etching and preparation process, which is applied in the chemical etching process of titanium alloys and the field of etching agents used in the process, which can solve the problems of shortened service life of titanium alloy workpieces, reduction of fatigue strength of substrates, etc., achieve fast corrosion speed and increase etching time , The product is smooth and beautiful

Inactive Publication Date: 2006-04-12
BEIJING MONTAGNE MEDICAL DEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing methods of manufacturing titanium alloy porous surface layer, such as sintering method to manufacture titanium bead layer, plasma spraying titanium alloy microporous structure, etc., all require high temperature treatment of titanium alloy substrate, but high temperature treatment will change the crystal of titanium alloy. structure, thereby reducing the fatigue strength of the matrix and shortening the service life of titanium alloy workpieces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The chemical etching preparation process of titanium alloy of the present invention comprises the following processes:

[0022] (1) Cleaning and degreasing of the workpiece: In order to make the plastic protective layer sprayed on the surface of the titanium alloy workpiece firm and reliable, the workpiece needs to be cleaned with alkaline water to completely remove the surface oil, then rinse with clean water, and then dry naturally;

[0023] (2) Spraying plastic protective layer: epoxy resin is sprayed on the above-mentioned cleaned titanium alloy workpiece surface to be etched with a powder spraying machine, and the spraying thickness is 50-70 microns;

[0024] (3) Using a laser engraving machine, according to the designed pattern, make patterns on the plastic protective layer on the surface of the titanium alloy workpiece, so that the plastic protective layer on the pattern part is removed to form micropores, and countless micropores form the designed pattern, making...

Embodiment 2

[0028] The chemical etching preparation process of titanium alloy of the present invention comprises the following processes:

[0029] (1) Cleaning and degreasing of workpieces;

[0030] (2) Spraying plastic protective layer: epoxy resin is sprayed on the above-mentioned cleaned titanium alloy workpiece surface to be etched with a powder spraying machine, and the spraying thickness is 50-70 microns;

[0031] (3) Use a laser engraving machine to make patterns on the plastic protective layer on the surface of the titanium alloy workpiece according to the designed pattern, so that the plastic protective layer on the pattern part is removed to form micropores, so that the base of the titanium alloy workpiece is exposed, and the plastic protective layer is exposed. The patterned micro-holes are carved on the layer for chemical etching;

[0032] (4) chemically etched micropores: the nitric acid (HNO) with a weight content of 65% 3 ) is diluted to 50% with distilled water, and 40% ...

Embodiment 3

[0035] The chemical etching preparation process of titanium alloy of the present invention comprises the following processes:

[0036] (1) Cleaning and degreasing of workpieces;

[0037] (2) Spraying plastic protective layer: spray polytetrafluoroethylene on the above-mentioned cleaned titanium alloy workpiece surface to be etched with a powder spraying machine, and the spraying thickness is 50-70 microns;

[0038] (3) Use a laser engraving machine to make patterns on the plastic protective layer on the surface of the titanium alloy workpiece according to the designed pattern, so that the plastic protective layer on the pattern part is removed to form micropores, so that the base of the titanium alloy workpiece is exposed, and the plastic protective layer is exposed. The patterned micro-holes are carved on the layer for chemical etching;

[0039] (4) chemically etched micropores: the nitric acid (HNO) with a weight content of 65% 3 ) is diluted to 30% with distilled water, a...

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Abstract

A process for preparing pinholes, pattern, or holes on the surface of Ti-alloy by chemical etching includes such steps as washing the Ti-alloy workpiece for removing oil, spraying a plastic protecting layer, carving pinholes, preparing the etching liquid from nitric acid and hydrofluoric acid through proportional mixing, chemical etching to form the pinholes, and removing said plastic protecting layer.

Description

technical field [0001] The invention relates to a chemical etching process of titanium alloy and an etching agent used in the process. Background technique [0002] The existing methods of manufacturing titanium alloy porous surface layer, such as sintering method to manufacture titanium bead layer, plasma spraying titanium alloy microporous structure, etc., all require high temperature treatment of titanium alloy substrate, but high temperature treatment will change the crystal of titanium alloy. structure, thereby reducing the fatigue strength of the matrix and shortening the service life of titanium alloy workpieces. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a chemical etching preparation process of a titanium alloy that does not require high-temperature treatment of the substrate, has a simple and reliable process, is low in production cost, can precisely design the pattern of micropores and patt...

Claims

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Application Information

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IPC IPC(8): C23F1/00C23F1/26C23F1/02C23G1/20
Inventor 周袭明
Owner BEIJING MONTAGNE MEDICAL DEVICE
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