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Method for forming biological titanium alloy oxide films through cutting processing

A technology of cutting processing and oxide film, applied in the field of cutting processing, can solve the problems of low cost, complex process equipment, short process chain, etc., and achieve the effect of avoiding chloride ion damage, simple process equipment, and short process chain

Inactive Publication Date: 2014-02-19
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for forming a bio-titanium alloy oxide film by cutting to solve the problems of long process chain, complex process equipment, low efficiency and high cost of the existing machining method for surface treatment after machining , the method has a short process chain, simple process, high efficiency, and low cost, and can replace or partially replace the subsequent surface oxidation treatment, and at the same time avoid the chloride ion damage to the human body caused by the use of coolant in the cutting process

Method used

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  • Method for forming biological titanium alloy oxide films through cutting processing
  • Method for forming biological titanium alloy oxide films through cutting processing
  • Method for forming biological titanium alloy oxide films through cutting processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 As shown, the turning process, the outer surface of the TC4 cylinder is turned, the lathe is a PUMA 200M lathe, and the cutting temperature is measured by an infrared thermometer. The workpiece 2 is processed by the tool 3 in an oxygen-enriched atmosphere 4 to cut off chips 1 .

[0025] (1) When finishing machining, determine reasonable cutting parameters, and optimize cutting parameters through finite element simulation according to the machining allowance and cutting tool, using cutting machining theory and numerical simulation method: cutting speed 120m / min, back cutting amount 0.25mm, feed rate 0.1mm / r;

[0026] (2) Detect the cutting temperature of the cutting process, and measure the surface temperature of the workpiece through the infrared thermal imager;

[0027] (3) During the finishing process, an oxygen-rich atmosphere is applied during the cutting process. In order to increase the density of the oxide film and reduce the difficulty of oxide f...

Embodiment 2

[0031] Turning as figure 1 As shown, the turning process, the outer surface of the TC4 cylinder is turned, the lathe is a PUMA 200M lathe, and the cutting temperature is measured by an infrared thermometer. The workpiece 2 is processed by the tool 3 in an oxygen-enriched atmosphere 4 to cut off chips 1 .

[0032] (1) When finishing machining, determine reasonable cutting parameters, and optimize cutting parameters through finite element simulation according to the machining allowance and cutting tool, using cutting machining theory and numerical simulation method: cutting speed 120m / min, back cutting amount 0.25mm, feed rate 0.1mm / r;

[0033] (2) Detect the cutting temperature of the cutting process, and measure the surface temperature of the workpiece through the infrared thermal imager;

[0034] (3) An oxygen-enriched atmosphere is applied during the finishing cutting process. In order to increase the density of the oxide film and reduce the difficulty of oxide film format...

Embodiment 3

[0038] like figure 1 As shown, the turning process, the outer surface of the TC4 cylinder is turned, the lathe is a PUMA 200M lathe, and the cutting temperature is measured by an infrared thermometer. The workpiece 2 is processed by the tool 3 in an oxygen-enriched atmosphere 4 to cut off chips 1 .

[0039] (1) When finishing machining, determine reasonable cutting parameters, and optimize cutting parameters through finite element simulation according to the machining allowance and cutting tool, using cutting machining theory and numerical simulation method: cutting speed 120m / min, back cutting amount 0.25mm, feed rate 0.1mm / r;

[0040] (2) Detect the cutting temperature of the cutting process, and measure the surface temperature of the workpiece through the infrared thermal imager;

[0041](3) An oxygen-enriched atmosphere is applied during the finishing cutting process. In order to increase the density of the oxide film and reduce the difficulty of oxide film formation, a ...

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Abstract

The invention discloses a method for forming biological titanium alloy oxide films through cutting processing. The method comprises the following steps that (1) reasonable cutting parameters are determined; (2) the cutting temperature of the cutting processing is actively controlled and detected, and the temperature range of the workpiece surface is controlled to be 500 DEG C to 650 DEG C; (3) oxygen-enriched atmosphere is applied in the finish processing cutting process, a microfine low-pressure oxygen pipe is utilized for creating the oxygen-enriched atmosphere in a position near the back knife surface, the oxidation reaction generation condition is reduced, the oxidation reaction generation is more fully in a short time, and meanwhile, the titanium fire generation is prevented; (4) the cut oxide film observation is carried out, and the required oxide films are obtained; and (5) corrosion resistance tests are carried out, the surface corrosion resistance performance of the treated titanium alloy is simulated in human body fluid environment, and research results are verified. The method has the advantages that the process chain is short, in addition, the process equipment is simple, the efficiency is high, the cost is low, the subsequent surface oxidation treatment can be replaced or partially replaced, and the chloride ion damage to human bodies because of the use of cooling liquid in the cutting process is avoided.

Description

technical field [0001] The invention relates to a cutting processing technology, in particular to a method for forming a biological titanium alloy oxide film by cutting processing. Background technique [0002] At present, the oxide film on the surface of biomedical titanium alloy materials is very important for its corrosion resistance and biocompatibility, and is of great significance to ensure the health of the implanted human body. At present, there are 40 to 60 million people in the world who need joint replacement due to various diseases, and nearly 2 billion people suffer from various dental diseases. The annual demand for artificial hip joints in the world has reached hundreds of thousands. Due to the high mechanical strength, corrosion resistance, low elastic modulus and density, and excellent biocompatibility of medical titanium alloys, currently 90% of medical device implant parts are made of titanium alloys. Medical titanium alloys can be used to manufacture med...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B1/00
Inventor 万熠张蕊王干刘战强黄传真
Owner SHANDONG UNIV
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