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

Diffusion connection technology of laminated composite material and low-alloy steel

A technology of diffusion joining and composite materials, which is used in metal processing equipment, manufacturing tools, welding equipment, etc. to achieve stable and reliable strength and mechanical properties, easy to popularize and apply, and high welding efficiency.

Inactive Publication Date: 2016-10-26
SHANDONG JIANZHU UNIV
View PDF13 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on diffusion bonding between laminated composite materials and steel dissimilar materials in domestic and foreign literature

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
  • Diffusion connection technology of laminated composite material and low-alloy steel
  • Diffusion connection technology of laminated composite material and low-alloy steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] For the diffusion connection of laminated composite materials with a length of 90mm, a width of 45mm, and a thickness of 3mm, and a Q345 low-alloy steel with a length of 90mm, a width of 90mm, and a thickness of 16mm, the lap joint surface is 90mm×45mm noodle. The process steps are as follows:

[0022] (1) Mechanical processing removes the super nickel coating on the surface of the laminated composite material to be connected, exposing the Ni-Cr base layer (90mm×45mm contact surface) of the surface to be connected, and the surface to be connected is polished with metallographic sandpaper and then wiped with absolute ethanol , to remove oil and debris from the connection surface.

[0023] (2) Use niobium foil with a purity greater than 99.95% as the intermediate layer, the thickness of the niobium foil is 30 μm, and the chemical composition of the niobium foil is: Nb ≥ 99.95% and the rest ≤ 0.05%.

[0024] (3) Place the niobium foil master alloy between the rectangular...

Embodiment 2

[0032] For the diffusion connection of two laminated composite materials with a length of 60mm, a width of 60mm, and a thickness of 3mm, and a Q345 low-alloy steel with a length of 60mm, a width of 60mm, and a thickness of 25mm, the diffusion connection is carried out on both sides. The lap joint surface is 60mm×30mm double-sided contact surface. The process steps are as follows:

[0033] (1) Mechanical processing removes the super nickel coating on the front and back sides of the laminated composite material to be connected, exposing the 60mm×30mm contact surface of the Ni-Cr base layer on the front and back sides to be connected, and the surfaces to be connected on both sides are polished with metallographic sandpaper Wipe with absolute ethanol to remove oil and debris from the connecting surfaces.

[0034] (2) Use niobium foil with a purity greater than 99.95% as the intermediate layer, the thickness of the niobium foil is 30 μm, and the chemical composition of the niobium...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a diffusion connection method of a laminated composite material and low-alloy steel. The method mainly comprises the steps that a niobium foil intermediate alloy is added into the position between contact interfaces of the laminated composite material and the low-alloy steel, the laminated composite material and the low-alloy steel are subject to vacuum diffusion connection, according to the technological parameters, a step-by-step temperature rising manner is adopted, the positions at the temperature of 550 DEG C, 750 DEG C and 950 DEG C are each provided with a platform, the diffusion connection temperature ranges from 1020 DEG C to 1180 DEG C, heat preservation time ranges from 30 min to 80 min, connection pressure ranges from 5 MPa to 15 MPa, the vacuum degree ranges from 1.33*10<-5> Pa to 1.33*10<-4> Pa, and after the temperature of a vacuum chamber is slowly reduced to below 100 DEG C, a furnace door can be opened, and a connected part is taken out. According to the technology, the interface diffusion combination of the laminated composite material and the low-alloy steel can be promoted, the strength and the mechanical property of a connection joint are stable and reliable, and the technology can meet the use requirement of a laminated composite material and low-alloy steel diffusion joint.

Description

technical field [0001] The invention relates to a welding process of laminated composite materials, in particular to the diffusion connection process between laminated composite materials and steel dissimilar materials, and belongs to the field of welding technology. Background technique [0002] The laminated composite material made of nickel-based coating and Ni-Cr base layer by vacuum isostatic rolling method has good high temperature performance, oxidation resistance and corrosion resistance, and can be used in aerospace, nuclear engineering, energy, Petrochemical and other fields. Connecting this laminated composite material with structural steel to form a composite structure can exert their respective properties, and has unique advantages in the manufacture of specific parts. [0003] However, it is very difficult to realize the welding of laminated composite materials, which limits its application. Chinese invention patent ZL200810016502.8 realizes argon tungsten ...

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): B23K20/02
CPCB23K20/026B23K2103/166
Inventor 李嘉宁张元彬霍玉双刘鹏石磊
Owner SHANDONG JIANZHU 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