A transitional liquid phase assisted solid phase connection method
A solid-phase connection and transition fluid technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems affecting joint performance, surface flatness of connection interface, harsh roughness, etc., to improve welding efficiency and high temperature. Performance and reliability, the effect of shortening the welding time
Inactive Publication Date: 2018-01-12
NANCHANG HANGKONG UNIVERSITY
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, because the material is in the solid phase during the connection process, it is more demanding on the flatness and roughness of the connection interface surface, and the existence of surface oxide film and work hardening layer also affects the performance of the joint.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] The present invention works and implements like this, as Figure 1-4 As shown, a transitional liquid-phase assisted solid-phase joining method simply grinds the joint surfaces of the materials to be welded 1 and the materials to be welded 5, and adds an intermediate layer 3 containing demelting elements between the materials to be welded 1 and 5, and assembles into a sandwich structure and placed on the lower support plate 4 of the vacuum diffusion welding furnace. Heating to between the melting point of the intermediate layer and the melting point of the material to be welded, through the interdiffusion between the demelting element and the material to be welded, the surface layer of the part to be connected is partially liquefied to form a liquefied phase 6, and then passes through the upper pressure head 2 to be welded 1 and 5 apply a certain forging pressure to extrude the liquid phase 7 to remove the physical and chemical uneven layer on the surface, and under the ...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a transition liquid phase assisted solid phase connection method. The method comprises: placing an intermediate layer material for transition liquid phase diffusion welding on the interface to be connected, utilizing the diffusion of demelting elements in the intermediate material, Form an instant liquid phase, apply forging pressure, extrude the liquefied phase on the surface of the material to be welded from the joint area, clean the oxide film and work-hardened layer on the joint interface of the material to be welded, meet the requirements of the solid phase diffusion welding interface, and squeeze out the liquid phase Finally, maintain a certain pressure and further diffuse to form a solid-phase connection joint. The technical effect of the present invention: by extruding the liquid phase in the joint area, the oxide film layer and work hardening layer on the surface of the material to be welded can be effectively removed, avoiding the high-demand cleaning process of the surface to be welded before the solid phase connection, and at the same time by removing the surface of the joint Inhomogeneous layer shortens the diffusion time of solid phase connection and improves welding efficiency.
Description
technical field [0001] The invention relates to a transitional liquid-phase assisted solid-phase connection technology, which belongs to the mixed technology of instantaneous liquid-phase connection and diffusion welding; it is suitable for the high-efficiency connection of single crystal materials, especially for the connection of high-temperature structural materials such as aeroengine turbine blades. Background technique [0002] For new materials such as intermetallic compounds, composite materials, amorphous materials and single crystal materials, it is difficult to achieve reliable connection by traditional welding methods. At home and abroad, brazing, transient liquid phase diffusion welding (TLP), solid phase diffusion welding and other methods are mainly used. [0003] Brazing is to use a metal material with a lower melting point than the base metal as the solder, heat the weldment and the solder to a temperature higher than the melting point of the solder and lower...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/008B23K1/20
CPCB23K1/008B23K1/20
Inventor 黄永德曾志强仵艳影陈玉华何鹏
Owner NANCHANG HANGKONG UNIVERSITY