A low-cost powder injection molding process of hydrogenated dehydrogenated titanium powder

A hydrogenated dehydrogenated titanium powder, powder injection molding technology, applied in the field of titanium alloy forming technology, can solve the problems of poor fluidity of hydrogenated dehydrogenated titanium powder, difficult to manufacture products, difficult to form, etc., to achieve good density and mechanical properties , Improve the yield and enhance the effect of fluidity

Active Publication Date: 2017-07-14
SHENZHEN ELEMENTPLUS MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fluidity of hydrogenated dehydrogenation titanium powder is poor, it is not easy to form, and the content of impurities such as oxygen, nitrogen, and carbon is high, so it is difficult to produce qualified products

Method used

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  • A low-cost powder injection molding process of hydrogenated dehydrogenated titanium powder
  • A low-cost powder injection molding process of hydrogenated dehydrogenated titanium powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1 The powder injection molding process of manufacturing pure titanium parts with low-cost hydrogenated dehydrogenated titanium powder

[0040] The hydrogenation-dehydrogenation titanium powder and the LaB6 powder that accounted for 1wt.% of the total weight of the mixed powder were mixed uniformly to obtain the mixed powder, and then adding a polymer binder (50wt.% HDPE, 45wt. % paraffin and 5wt.% stearic acid), first heat the metal powder to 160°C in the internal mixer, then gradually add HDPE, paraffin and stearic acid. After mixing evenly, the granular feed is made by a granulator. Ultrasonic-assisted injection molding was performed at 140°C to produce green bodies (yield >90%). Soak the green body in a n-hexane solution at 40°C and keep it warm for 24 hours to degrease the solvent. Then take out the green body, put it into the degreasing sintering furnace after drying. Residual binder was removed by thermal debinding at 450°C. Raise the vacuum of the sin...

Embodiment 2

[0041] Example 2 The powder injection molding process of manufacturing Ti6Al4V parts with low-cost hydrogenation-dehydrogenation titanium powder

[0042] The hydrogenated-dehydrogenated titanium powder and the total weight of the mixed powder are mixed with 6wt.% aluminum powder, 4wt.% vanadium powder and 1wt.% LaB6 powder, and then add 45vol.% polymer viscose Binder (50wt.% HDPE, 45wt.% paraffin and 5wt.% stearic acid), first heat the metal powder to 160°C in an internal mixer, and then gradually add HDPE, paraffin and stearic acid. After mixing evenly, the granular feed is made by a granulator. Ultrasonic-assisted injection molding was performed at 140°C to produce green bodies (yield >90%). Soak the green body in a n-hexane solution at 40°C and keep it warm for 24 hours to degrease the solvent. Then take out the green body, put it into the degreasing sintering furnace after drying. Residual binder was removed by thermal debinding at 450°C. Raise the vacuum of the sinter...

Embodiment 3

[0043] Example 3 The powder injection molding process of manufacturing pure titanium parts with low-cost hydrogenated dehydrogenated titanium powder

[0044]The hydrogenation-dehydrogenation titanium powder and the YH powder that accounts for 0.5wt.% of the total weight of the mixed powder are uniformly mixed to obtain the mixed powder, and then adding the polymer binder (50wt.% HDPE, 47wt% of the total volume) is 42vol.% .% paraffin and 3wt.% stearic acid), first metal powder is heated to 160 ℃ in the internal mixer, then gradually add HDPE, paraffin and stearic acid. After mixing evenly, the granular feed is made by a granulator. Ultrasonic-assisted injection molding was performed at 140°C to produce green bodies (yield >90%). Soak the green body in a n-hexane solution at 40°C and keep it warm for 24 hours to degrease the solvent. Then take out the green body, put it into the degreasing sintering furnace after drying. Residual binder was removed by thermal debinding at 45...

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Abstract

The invention relates to titanium alloy molding process, and particularly discloses a powder injection molding process by utilizing low-cost hydrogenated-dehydrogenated titanium powder. The process comprises the following steps: mixing hydrogenated-dehydrogenated titanium powder with alloy element powder, additive powder and an adhesive, mixing and pelletizing to obtain feeds; manufacturing blanks by utilizing an ultrasonic-assisted injection molding method; removing the adhesive in the blanks by utilizing solvent debinding and thermal debinding; finally sintering at high temperature to manufacture finished products. According to the powder injection molding process by utilizing the low-cost hydrogenated-dehydrogenated titanium powder as a raw material, the preparation cost of titanium alloy products is low, and the process is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a forming process of titanium alloy, in particular to a powder injection forming process of low-cost hydrogenated dehydrogenated titanium powder. Background technique [0002] Titanium and its alloys have low density, high specific strength, high corrosion resistance, and good biocompatibility, and are widely used in chemical, biomedical, aviation, navigation, automobile and other fields. However, due to the characteristics of high melting point, active chemical properties at high temperature, and high hardness, titanium and its alloys have been considered as difficult-to-process materials in industry. As an advanced powder metallurgy process, powder injection molding of titanium alloy can directly produce titanium alloy products with complex shapes without a large number of post-processing processes, so it has been widely valued in the industry. [0003] In the powder injection molding of titanium alloy, spherical titanium po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/22
Inventor 余鹏
Owner SHENZHEN ELEMENTPLUS MATERIAL TECH CO LTD
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