Supercharge Your Innovation With Domain-Expert AI Agents!

Titanium alloy hollow node ball and preparation method thereof

A node ball, titanium alloy technology, applied in the field of powder metallurgy, can solve the problems of difficult removal of internal materials, poor machining performance, low production efficiency, etc., to achieve the effect of good consistency, low equipment requirements, and cost reduction

Pending Publication Date: 2019-01-18
UNIV OF SCI & TECH BEIJING
View PDF14 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, traditional machining methods are mostly used for node balls. Since the axis of each hole is distributed through the center of the ball, the angle changes frequently, and the angle changes of each hole are complicated. Repeated clamping during processing will cause large repeated positioning errors. Processing low precision
Another way is to make a bolt hole on the node ball first, and then put the bolt in the hole for further processing, but this method has complicated procedures, low production efficiency and high production cost
In addition, the internal structure of the hollow node ball is complex, and the internal material is difficult to remove
On the other hand, the machinability of titanium alloy material itself is poor, and the processing cost is high, which further limits the application of traditional machining technology on titanium alloy hollow node balls.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Titanium alloy hollow node ball and preparation method thereof
  • Titanium alloy hollow node ball and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The raw material is TC4 powder mixed with 50% hydrogenated dehydrogenation powder and atomized powder, the median particle size is 27.2 μm, mixed with a plastic-based binder, the binder includes 85wt.% polyoxymethylene, 5wt.% high-density polyethylene , 5wt.% polypropylene, 3wt.% microcrystalline wax and 2wt.% stearic acid. The mixing temperature is 180°C, and the time is 1.5 hours. After the mixing is completed and cooled to room temperature, the feed is taken out, and then the feed is cut into granular feed through a crusher. Then put the feed into the injection machine and heat it to 185°C for injection. The injection pressure is 80MPa, the holding pressure is 70MPa, and the mold temperature is 80°C. Two identical hollow node hemispherical blanks are prepared. Put the two blanks into the degreasing furnace for nitric acid catalytic degreasing. The degreasing temperature is 125°C, the acid feed rate is 1.3g / min, and the degreasing time is 8h. After degreasing, the end...

Embodiment 2

[0049] The raw material is TC4 powder mixed with 30% hydrogenated dehydrogenation powder and atomized powder, the median particle size is 12.5 μm, mixed with a plastic-based binder, the binder includes 82wt.% polyoxymethylene, 6wt.% high-density polyethylene , 7wt.% polypropylene, 2wt.% microcrystalline wax and 3wt.% stearic acid. The mixing temperature is 190°C, and the time is 2 hours. After the mixing is completed and cooled to room temperature, the feed is taken out, and then the feed is cut into granular feed through a crusher. Then put the feed into the injection machine and heat it to 195°C for injection, the injection pressure is 90MPa, the holding pressure is 85MPa, the mold temperature is 110°C, and two hollow node ball blanks are prepared. Put the two blanks into the degreasing furnace for nitric acid catalytic degreasing, the degreasing temperature is 125°C, the acid feed rate is 1.5g / min, the degreasing time is 8h, and then the end surface of the degreasing hemisp...

Embodiment 3

[0052] The raw material is TC4 powder mixed with 20% hydrogenated dehydrogenation powder and atomized powder, the median particle size is 18.6 μm, mixed with a plastic-based binder, the binder includes 88wt.% polyoxymethylene, 4wt.% high-density polyethylene , 4wt.% polypropylene, 3.5wt.% microcrystalline wax and 0.5wt.% stearic acid. The mixing temperature is 140°C, and the time is 1 hour. After the mixing is completed and cooled to room temperature, the feed is taken out, and then the feed is cut into granular form by a crusher. Then put the feed material into the injection machine and heat it to 145°C for injection. The injection pressure is 50MPa, the holding pressure is 45MPa, and the mold temperature is 70°C to prepare two hollow node ball blanks. Put the two blanks into the degreasing furnace for nitric acid catalytic degreasing, the degreasing temperature is 120°C, the acid feed rate is 1.5g / min, the degreasing time is 12h, and then the end surface of the degreasing he...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a titanium alloy hollow node ball and a preparation method thereof. The diameter of the hollow node ball is 40-60 millimeters, the wall thickness of the ball is 2-10 millimeters, the spherical surface is evenly distributed with joint connecting holes, the axis of each connecting hole passes through the center of the ball, the inner wall of each connecting hole is a workingsurface, and the connecting hole can be in the form of a thread connection or a clamp connection. The preparation method comprises the following steps of: designing a hollow node hemisphere model which is provided with a finite position step: a limit step and a hollow node hemisphere model of a pin hole are assembled on an end face, two kinds of irregular titanium alloy powder of atomization spherical Ti-6Al-4V and hydrogenated and dehydrogenated are mixed and used as raw materials, and a catalytic degreasing type adhesive is used; a hollow node hemisphere blank is prepared by using powder injection molding technology; Cu-Sn-Ti solder paste is coated on the end surface of the degreased hemisphere blank to obtain a complete node ball after buckling; then the node ball is sintered and cooled. The titanium alloy hollow node ball is low in cost, good in consistency, high in size precision, fine and uniform in structure and excellent in mechanical property.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a titanium alloy hollow node ball and a preparation method thereof. Background technique [0002] With the rapid development of satellite payload technology, satellites such as mobile communication, earth observation, data relay, and microwave remote sensing have put forward the requirement of large-scale expandable spaceborne structures. Many current scientific research programs, such as space science programs, earth science programs, and human space exploration programs also require large-scale space structures, and large-scale space structures are generally constructed by means of on-orbit assembly, requiring materials with light weight and rigidity Light, reliable, and stable, research on high-performance space trusses that can be assembled in orbit has become a core issue in solving large-scale space structures. The truss structure and truss members can give full ...

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): B22F5/10B22F3/115B22F1/00
CPCB22F3/115B22F5/10B22F2998/10B22F1/107B22F9/023B22F3/1021
Inventor 路新潘宇刘程程沈晓宇张玉良曲选辉
Owner UNIV OF SCI & TECH BEIJING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com