Method for brazing titanium alloy thin-walled parts with ti-cu-ni-zr solder

A technology of ti-cu-ni-zr and thin-walled parts is applied in the field of brazing titanium alloy thin-walled parts using Ti-Cu-Ni-Zr solder, which can solve the problems of low penetration rate and brittleness of joints, and achieve High penetration rate, solving the effect of high weight and high quality connection

Active Publication Date: 2016-05-25
HARBIN DONGAN ENGINE GRP
View PDF5 Cites 0 Cited by
  • 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 of using Ti-Cu-Ni-Zr solder to braze titanium alloy thin-walled parts, which can meet the requirements of welding and solve the problems of low penetration rate and brittleness of joints

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

[0028] For the welding of an engine blade and ring, both the blade and the ring are thin-walled parts, the thickness of the blade is 0.8mm, and the thickness of the ring is 0.8mm. After welding, the penetration rate is required to be more than 85%. The welding steps are as follows:

[0029] 1) Chemically clean the parts before brazing to completely remove the oxide film and oil. The chemical cleaning is as follows: use HNO with a composition of d=1.36 in the pickling tank 3 285ml / L, d=1.13 HF27ml / L, the rest is pickling with deionized water mixture; the temperature is room temperature, the time is 3min, after pickling, immediately wash with water at room temperature for 2min

[0030] 2) Within 4 hours, dehydrogenate titanium alloy thin-walled parts and titanium alloy specimens together to prevent hydrogen from interacting with titanium to form TiH 2 brittle phase, and then put the part into a clean container; the dehydrogenation method is: carry out in a vacuum furnace at a te...

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
thicknessaaaaaaaaaa
shear strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for using Ti-Cu-Ni-Zr solder to braze titanium alloy thin-walled parts. By using Ti-Cu-Ni-Zr solder and controlling the brazing temperature and holding time, the control of the joint is achieved. For the purpose of microstructure and shear strength, the connection of titanium alloy thin-walled parts has been successfully realized, and high-strength, high-penetration joints have been obtained. The shear strength of the joints reaches 557MPa-597MPa, and the penetration rate reaches more than 95%. The invention uses Ti-Cu-Ni-Zr solder to successfully connect titanium alloy thin-walled parts, and the connecting piece is used in aerospace engines, realizing high-strength and high-quality connection of titanium alloy thin-walled parts, and solving the problem of aerospace The cold-end components in aerospace engines generally have the problems of high weight and poor corrosion resistance.

Description

Technical field [0001] The present invention involves a method of using TI -钎 钎 钎 钎 titanium alloy parts. Background technique [0002] Titanium alloys have small density and light weight, which have been increasingly widely used in aerospace and other industries.The thermal expansion coefficient of titanium alloy is small, low thermal conductivity, low strength, but good plasticity, good cutting and corrosion resistance, can be processed under normal pressure.Due to the excellent performance of the above -mentioned titanium alloy, the use of titanium alloy material processing structure parts is used for aviation engines, such as fan cars, static rings of aviation engines, etc. The thickness of these parts is between 0.6mm and 1.0mm.It is α + β -type titanium alloy.However, the welding of titanium alloy materials, especially thin -walled parts, generally produce inter -metal inter -metal compounds after welding, causing brittleness of the joints, and low permeability, thereby res...

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 Patents(China)
IPC IPC(8): B23K1/008B23K1/20B23K1/14B23K35/30B23K35/22B23K103/14
CPCB23K1/008B23K1/14B23K1/20B23K1/206B23K33/004B23K35/325B23K2103/14
Inventor 郑医王广海师玉英宋健兰宇王振明陈玉宝
Owner HARBIN DONGAN ENGINE GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap