Composite automatic aluminum brazing wire used for brazing aluminum alloy automobile frame and skin joints and preparation method

A kind of aluminum alloy and aluminum brazing technology, applied in welding equipment, metal processing equipment, welding medium and other directions, to achieve the effect of improving strength, reducing surface energy, improving processing performance and service performance

Inactive Publication Date: 2016-07-13
GUILIN QINGTONG NON FERROUS METAL ARTS & CRAFTS MATERIAL DEV CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of brazing connection of aluminum alloy automobile frame and skin joint, the invention provides a composite automatic brazing wire for brazing connection of aluminum alloy automobile frame and skin joint and its preparation method

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
  • Composite automatic aluminum brazing wire used for brazing aluminum alloy automobile frame and skin joints and preparation method
  • Composite automatic aluminum brazing wire used for brazing aluminum alloy automobile frame and skin joints and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to Figure 1-2 , a composite automatic aluminum brazing wire used for brazing of aluminum alloy automobile frame and skin joints, which consists of an aluminum-based solder core 1, an aluminum flux 2 compounded between the blades of the core 1 and spray coating The aluminum consists of a layer 3 of silicon powder on the surface of flux 2 . The outer diameter of the aluminum-based solder core 1 is 3-4mm, and the thickness T of the core blade is 0.5-0.8mm; the model of the core aluminum-based solder is: BAl86SiZnCuNiMe, and its chemical composition weight ratio is: AL;86 ; Si: 12; Zn: 0.6; Cu: 0.7; Ni: 0.7, Sr: 0.05; Zr: 0.05; Ce: 0.04. The aluminum flux compounded between the core blades is paste flux, which is produced by Nocolok (KAIF 4 +K 3 AlF 6 Eutectic) flux powder, which is uniformly mixed with evaporative polyethylene glycol with a relative molecular mass of 10,000 to 20,000 and synthetic resin in the flux powder, and the flux powder is solidified and f...

Embodiment 2

[0038] The difference from Example 1 is that the weight ratio of each chemical component in the composite aluminum brazing wire core material is: AL; 89; Si: 9; Zn: 1.1; Cu: 0.4; Ni: 0.5, Sr: 0.04; Zr : 0.06; Ce: 0.03. The proportion of polyethylene glycol and synthetic resin in the paste flux mixture, the synthetic resin accounts for 20% of its total weight, and the thickness of silicon powder on the surface layer of the composite solder wire is 50 μm.

[0039] During preparation: In step 1, master alloys such as Al-Si, Al-Cu, Al-Ni, and Al-Zn are added to the molten pure aluminum liquid at 780°C at the same time, all the master alloys are melted and stirred for 2 minutes. into argon (Ar 2 ) and HCH (C 2 Cl 6 ) refining for 10 to 15 minutes, after removing slag, quickly add Al-Sr, Al-Zr and Al-Ce intermediate alloys, and then use argon (Ar 2 ) refining for 3 to 5 minutes, drain the slag, and pour it directly into the mold through the running water tank to make a cast rod....

Embodiment 3

[0041] The difference from Example 1 is that the weight ratio of each chemical component in the composite aluminum brazing wire core material is: AL; 90; Si: 8; Zn: 0.8; Cu: 0.6; Ni: 0.6, Sr: 0.04; Zr :0.05; Ce: 0.02. The ratio of the paste flux mixture polyethylene glycol to the synthetic resin, the synthetic resin accounts for 30% of its total weight. The thickness of the silicon powder on the surface of the composite solder wire is 60 μm.

[0042] During preparation: In step 1, master alloys such as Al-Si, Al-Cu, Al-Ni and Al-Zn are simultaneously added to the molten pure aluminum liquid at 850°C, all master alloys are melted and stirred for 2 minutes, Introduce argon gas (Ar 2 ) and HCH (C 2 Cl 6 ) refining for 10 to 15 minutes, after removing slag, quickly add Al-Sr, Al-Zr and Al-Ce intermediate alloys, and then use argon (Ar 2 ) refining for 3 to 5 minutes, adjust the temperature to 890°C, remove the slag and drain the liquid, pour it directly into the mold through ...

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
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a composite automatic aluminum brazing wire for an aluminum alloy automobile frame and skin joint brazing and a preparation method thereof. The aluminum brazing wire is composed of an aluminum base brazing filler metal core, an aluminum brazing agent compounded between core blades and a silicon powder layer sprayed on the surface of the aluminum brazing agent. During preparation, a brazing filler metal core alloy is smelted and cast first, then rolled and extrusion-formed and finally compounded with a Nocolok brazing agent, and then silicon powder is sprayed on the surface of a composite brazing filler metal wire. The composite automatic aluminum brazing wire is suitable for aluminum and aluminum alloy construction members at the overburning temperature above 600 DEG C, and the whole brazing process is convenient to operate. By adding rare earth elements and rare earth metal into the composite automatic aluminum brazing wire core material, micro textures and alternating surface energy of a brazing filler metal wire core material is improved, and machinability and use usability of the composite aluminum brazing filler meal are improved.

Description

technical field [0001] The invention relates to solder, in particular to a composite automatic aluminum brazing wire used for brazing joints of aluminum alloy automobile frames and skins and a preparation method thereof. Background technique [0002] With the rapid development of the automobile manufacturing industry and stricter exhaust emission standards, the development direction of aluminum body and all-aluminum body is very clear. For example, in the Ferrari car produced in Italy, only the outer ring of the drive shaft is made of steel, and the rest are all made of aluminum; in the Audi car produced in Germany, almost all the parts of the car are made of aluminum. Domestically produced cars use an average of more than 100 kilograms of aluminum per car, and many companies have completed trial production of all-aluminum car prototypes. As one of the core technologies, the welding technology of foreign aluminum body is absolutely confidential. At present, the aluminum bo...

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): B23K35/14B23K35/28B23K35/363B23K35/40
Inventor 阳家盛
Owner GUILIN QINGTONG NON FERROUS METAL ARTS & CRAFTS MATERIAL DEV CO LTD
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