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

Connection method of diffusion welding multilayer aluminum foil

A connection method and diffusion welding technology, applied in welding equipment, welding/welding/cutting items, non-electric welding equipment, etc., can solve the problems of low strength and high cost, and achieve convenient control, reliable welding joints, and good application prospects. Effect

Active Publication Date: 2017-07-18
哈尔滨工大华策科技有限公司
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a connection method for diffusion welding multi-layer aluminum foil in order to solve the problems of high cost and low strength of the existing multi-layer aluminum foil welding 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

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Embodiment 1: A connection method of diffusion welding multi-layer aluminum foil in this embodiment is carried out according to the following steps:

[0017] 1. Pretreatment: Polish the aluminum foil with 200-mesh, 400-mesh, 600-mesh, 800-mesh and 1000-mesh sandpaper in sequence, and then use acetone ultrasonic pretreatment to remove oily impurities to obtain the pretreated aluminum foil;

[0018] 2. Photochemical treatment: put the pretreated aluminum foil obtained in step 1 in 0.1mol / L-10mol / L NaOH solution for 10s-100s, take it out and put it in 0.1mol / L-10mol / L HCl solution Treat for 10s to 100s to obtain the photochemically treated aluminum foil;

[0019] 3. Diffusion welding connection: put the n layers of aluminum foil after photochemical treatment in step 2 into a vacuum diffusion welding furnace immediately after lamination and assembly, and weld the entire area or both ends of the aluminum foil. The welding parameters are: pressure head The pressure is 2MPa~1...

specific Embodiment approach 2

[0026] Embodiment 2: This embodiment is different from Embodiment 1 in that: the aluminum foil described in step 1 is hard aluminum foil or semi-rigid aluminum foil. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the ultrasonic frequency in the acetone ultrasonic pretreatment in step 1 is 0.5 kHz to 40 kHz. Other steps and parameters are the same as those in Embodiment 1 or 2.

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to flexible connection methods of multilayer aluminum foil, in particular to a connection method of diffusion welding multilayer aluminum foil. The connection method aims to solve the problems that in an existing multilayer aluminum foil welding method, cost is high, and strength is not high. The method comprises the steps of firstly, pretreatment, secondly, photochemical treatment and thirdly, diffusion welding connection. According to the connection method of the diffusion welding multilayer aluminum foil, the principle of low-cost and high-strength connection is achieved, aluminum foil connection can be achieved conveniently through diffusion welding, and micro-beam plasma and micro-arc welding precise control is not needed; by means of diffusion welding, a connector high in strength can be obtained, the shearing strength reaches up to 28.2 Mpa, and the strength at room temperature and the strength at high temperature are both larger than brazing strength by 2-3 times; by means of diffusion welding, a surface oxidation film is damaged through grinding, and a welding area can be effectively controlled without brazing filler metal; and due to the fact that heat uniformity of the whole area is achieved and intervention of outside materials is avoided, multilayer welding of the aluminum foil can be achieved more easily.

Description

technical field [0001] The invention relates to a method for soft connection of multilayer aluminum foils. Background technique [0002] Aluminum foil is a hot stamping material that is directly rolled into thin sheets by metallic aluminum. Its hot stamping effect is similar to that of pure silver foil hot stamping, so it is also called fake silver foil. Due to its excellent characteristics, aluminum foil is widely used in food, beverages, cigarettes, medicines, photographic substrates, household daily necessities, etc., and is usually used as packaging materials; electrolytic capacitor materials; heat insulation materials for buildings, vehicles, ships, houses, etc.; Decorative gold and silver threads, wallpapers, various stationery prints and decorative trademarks of light industrial products, etc. Among the various uses mentioned above, the one that can make the most effective use of the performance of aluminum foil is as a packaging material. Aluminum foil is a soft me...

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): B23K20/02B23K20/14B23K20/24
CPCB23K20/002B23K20/023B23K20/14B23K20/24B23K2103/10
Inventor 岳立林
Owner 哈尔滨工大华策科技有限公司
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