Method for preparing titanium product

A product, a technology of pure titanium, applied in the field of preparation of titanium products, can solve problems such as difficult-to-process structures and complex precision parts, and achieve the effects of reducing energy consumption and cost, saving technological processes, and net-shaped products

Active Publication Date: 2011-07-13
FUJIAN CTRUE MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing titanium products to solve the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put the pure titanium powder with an average particle diameter of 5 microns on the platform of the laser sintering equipment. The object is deconstructed into a two-dimensional plane with a layer thickness of 30 microns, and the layer thickness of the powder laying is controlled at 30 microns for sintering. Subsequently, the sintered pure titanium sample was vacuum annealed, and the vacuum degree was controlled at 1X10 -3 ~1X10 -6 Pa, the temperature is 580°C, and the holding time is 1 hour, and finally a pure titanium product with high precision and complex structure is obtained.

Embodiment 2

[0018] Put the Ti-6Al-4V alloy powder with an average particle diameter of about 10 microns on the platform of the laser sintering equipment, the sintering atmosphere is argon protection, the laser spot is controlled at 80 microns, and the line scanning speed is controlled at 3 m / In seconds, the laser sintered object is deconstructed into a two-dimensional plane with a layer thickness of 40 microns, and the layer thickness of the powder laying is controlled at 40 microns for sintering. Subsequently, the sintered Ti-6Al-4V sample was annealed under atmosphere protection. The protection atmosphere was argon, the temperature was 650°C, and the holding time was 2 hours. Finally, Ti-6Al-4V with high precision and complex structure was obtained. 4V products.

Embodiment 3

[0020] Put the Ti-5Al-3V alloy powder with an average particle diameter of about 0.5 microns on the platform of the laser sintering equipment, the sintering atmosphere is argon protection, the laser spot is controlled at 40 microns, and the line scanning speed is controlled at 3 m / In seconds, the laser sintered object is deconstructed into a two-dimensional plane with a layer thickness of 20 microns, and the layer thickness of the powder laying is controlled at 20 microns for sintering. Subsequently, the sintered Ti-5Al-3V sample was annealed under atmosphere protection. The protection atmosphere was argon, the temperature was 650°C, and the holding time was 2 hours. Finally, Ti-5Al-3V with high precision and complex structure was obtained. 3V products.

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PUM

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Abstract

The invention discloses a method for preparing a titanium product. The method is characterized by adopting pure titanium or titanium alloy powder as material and preparing the titanium product by laser sintering. A three-dimensional design or reversely reconstructed three-dimensional stereo lithography (STL) data model is taken as a basis, and is converted into stereo-lithography apparatus (SLA) two-dimensional slice data serving as an instruction for the laser sintering; the pure titanium or titanium base alloy powder with certain particle size is sintered to prepare a blank which is subject to subsequent thermal treatment and polishing process to prepare the complex integrated titanium product. As the method combines the characteristics of integral design, net forming, high precision and the like, the problem of difficult processing of titanium alloy is solved, the subsequent processing cost is saved, the yield is high, and the method is suitable for preparing the titanium base products with a complex structure.

Description

technical field [0001] The invention relates to a method for preparing titanium products. Background technique [0002] Titanium has the characteristics of good biocompatibility, light weight, stable chemical properties, high mechanical strength and non-magnetic properties. It has always been the material of choice for medical device products and has been widely used in the field of medical and health care. Pure titanium or titanium-based materials are usually cast and followed by a series of methods such as machining, hot working and heat treatment. This method generally has the disadvantages of many internal defects, severe oxidation, and low yield. At the same time, titanium itself is difficult to process, which results in high cost of high-precision integrated complex structure titanium products, and also limits the depth of application of titanium products. and breadth. Laser sintering of pure titanium or titanium-based powder to prepare products with high precision h...

Claims

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Application Information

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IPC IPC(8): B22F3/105C22F1/18C22F1/02
CPCY02P10/25
Inventor 林锦新
Owner FUJIAN CTRUE MATERIALS TECH
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