Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Injection molding titanium alloy deoxidizing process and application

A technology of injection molding and titanium alloy, which is applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve the problems of high price, difficult production of low-oxygen powder, and restrictions on the application of titanium alloy injection molding, etc., to achieve low oxygen content, Good plasticity and toughness, less impurities

Inactive Publication Date: 2021-03-16
CENT SOUTH UNIV
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because injection molding requires fine powder, it is difficult to produce low-oxygen powder, so the price of titanium alloy powder for injection molding remains high, which limits the application of titanium alloy injection molding

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. be that the hydrogenated dehydrogenation titanium powder (oxygen content is 0.6wt%) that particle size is 20 microns, the Al powder that particle size is 10 microns, the V powder that particle size is 20 microns by Ti-6Al-4V alloy composition ratio as raw material. The raw materials were mixed with a binder consisting of 60% paraffin wax (PW), 35% low density polyethylene (LDPE), 5% stearic acid (SA) with a solids content of 65%.

[0030] 2. Knead the above-mentioned mixed materials at a temperature of 150 degrees Celsius for 2 hours, then cool to room temperature, take them out, and then put them into a crusher to make granular feed. Put the granular feed into the injection machine and heat it to 165 degrees Celsius before injecting, the injection pressure is 70MPa, and the Ti-6Al-4V blank is obtained. Put the blank into a degreasing furnace for thermal degreasing, the degreasing temperature is 200°C, and the degreasing time is 10 hours.

[0031] 3. Put the degreas...

Embodiment 2

[0038] 1. Titanium hydride powder (oxygen content: 0.4wt%) with a particle size of 15 microns and AlV powder with a particle size of 10 microns are used as raw materials according to the composition ratio of Ti-6Al-4V alloy. The raw materials were mixed with a binder consisting of 60% paraffin wax (PW), 35% low density polyethylene (LDPE), 5% stearic acid (SA) with a solids content of 56%.

[0039] 2. Knead the above-mentioned mixed materials at a temperature of 160 degrees Celsius for 2 hours, then cool to room temperature, take them out, and then put them into a crusher to make granular feed. Put the granular feed into the injection machine and heat it to 165 degrees Celsius before injecting, the injection pressure is 70MPa, and the Ti-6Al-4V blank is obtained. Put the blank into a degreasing furnace for thermal degreasing, the degreasing temperature is 200°C, and the degreasing time is 10 hours.

[0040] 3. Put the degreased blank into a vacuum sintering furnace for sinter...

Embodiment 3

[0047] 1. The particle size is 18 micron sponge titanium powder (oxygen content is 0.4wt%), the particle size is 7 micron Al powder, and the particle size is 5 micron Fe powder according to the Ti-3Al-2Fe alloy composition distribution as raw materials. The raw material is mixed with a binder, the binder includes 93% naphthalene, 6% ethylene-vinyl acetate copolymer (EVA), 1% stearic acid (SA), and its solid content is 56%.

[0048] 2. Knead the above-mentioned mixed materials at a temperature of 160 degrees Celsius for 2 hours, then cool to room temperature, take them out, and then put them into a crusher to make granular feed. Put the granular feed into the injection machine and heat it to 165 degrees Celsius for injection with an injection pressure of 70 MPa to obtain a Ti-3Al-2Fe blank. Put the blank into a degreasing furnace for thermal degreasing, the degreasing temperature is 200°C, and the degreasing time is 10 hours.

[0049] 3. Put the degreased blank into a vacuum s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to an injection molding titanium alloy deoxidizing process. The invention particularly relates to a method for producing a high-performance low-oxygen injection molding titaniumalloy part and application. By taking titanium powder and / or titanium alloy powder with high oxygen content and low cost as raw materials for the first time, a product with excellent performance is obtained through a conventional injection molding process matched with a special reduction method in the later period. The raw materials are low in price, and the preparation process is simple and controllable; the obtained product is stable in size and excellent in performance. The process designed by the invention is particularly suitable for preparing thin-walled parts.

Description

technical field [0001] The invention relates to an injection-molded titanium alloy oxygen removal process; in particular, it relates to a method and application for producing high-performance low-oxygen injection-molded titanium alloy parts. Background technique [0002] Titanium alloys have a series of advantages such as low density, high specific strength, corrosion resistance, weldability, good medium temperature performance, and non-magnetic properties. They are widely used in aerospace, nuclear energy and chemical industries. Injection molding is a near-net shape technology using metal powder as raw material, which usually includes powder preparation, feed preparation, injection, degreasing, sintering, post-processing and other processes. This technology can achieve near-net shape of titanium products without processing, Compared with the traditional processing technology, it has the advantages of high flexibility in product shape, high mass production efficiency, low c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22B22F3/24C21D9/00C22C14/00C22F1/02C22F1/18
CPCB22F3/225B22F3/24C22C14/00C22F1/02C22F1/183C21D9/0068B22F2003/248B22F2003/241
Inventor 周承商段中元刘咏
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com