Ultrasonic-assisted transitional liquid phase bonding method

A technology of ultrasonic wave and transition fluid, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problem of long time consumption and achieve the effect of shortening welding time

Active Publication Date: 2016-01-13
河北宇天材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention is to solve the problem that the existing transitional liquid phase joining process needs to be completed under vacuum or inert atmosphere, and takes a long time, and provides an ultrasonic-assisted transitional liquid phase joining method

Method used

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  • Ultrasonic-assisted transitional liquid phase bonding method

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specific Embodiment approach 1

[0011] Specific Embodiment 1: In this embodiment, an ultrasonic-assisted transitional liquid-phase joining method is as follows: 1. Mechanically grind and clean the base material to be welded, and then follow the sequence of "base material to be welded - intermediate material - base material to be welded" Assemble to obtain the components to be welded, in which the base material to be welded and the intermediate layer material have eutectic; 2. Apply the ultrasonic tool head vertically to the components to be welded, apply a pressure of 0.02 ~ 5kN, then heat, and then apply ultrasonic vibration 1s ~ 10min to complete isothermal solidification; 3: If the isothermal solidification time is longer than 10min, continue to heat up, and then apply ultrasonic vibration for 1s ~ 10min to complete isothermal solidification; 4. After the isothermal solidification is completed in step 2 or step 3, cool with the furnace to room temperature and done.

[0012] The ultrasonic-assisted transit...

specific Embodiment approach 2

[0013] Specific embodiment two: the difference between this embodiment and specific embodiment one is: if the base material to be welded is a magnesium alloy or a magnesium-based composite material, the material of the intermediate layer is Zn, Cu, Al, Ag or silver-copper alloy; If the welding base material is aluminum alloy or aluminum-based composite material, the intermediate layer material is Zn, Cu, Mg, Ag or silver-copper alloy; if the base material to be welded is copper alloy or copper-based composite material, the intermediate layer material is Zn, Al, Mg or Ag. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the intermediate base material described in step 1 is pre-placed on the surface of the base material to be welded by evaporation or sputtering. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to an ultrasonic-assisted transitional liquid phase bonding method. The ultrasonic-assisted transitional liquid phase bonding method aims to solve the problems that existing transitional liquid phase bonding processes need to be completed in vacuum or inert atmospheres and the consumed time is long. The ultrasonic-assisted transitional liquid phase bonding method comprises the steps of firstly, polishing base metal to be welded mechanically, cleaning the base metal to be welded and assembling assemblies to be welded; secondly, applying an ultrasonic tool head to the assemblies to be welded vertically, exerting force, heating the assemblies to be welded and applying ultrasonic vibration to complete isothermal solidification; thirdly, keeping heating the assemblies to be welded if the isothermal solidification time is longer than 10 minutes and then applying ultrasonic vibration to complete isothermal solidification; fourthly, naturally cooling the assemblies to be welded in a furnace to the room temperature so as to complete the operation. According to the invention, interface oxidation films can be broken through the acoustic plasticizing effect of ultrasonic waves in solid, the welding time can be shortened, and the filling rate of weld joints can be higher than 95%. The ultrasonic-assisted transitional liquid phase bonding method is applicable to the brazing field.

Description

technical field [0001] The invention relates to an ultrasonic-assisted transitional liquid phase connection method. Background technique [0002] With the development of science and technology, especially with the rapid development of aerospace, space technology, and precision manufacturing, the connection technology is also constantly developing and improving. Since the instant liquid phase bonding technology was developed, it has been widely used in the connection of dispersion-strengthened alloys, fiber-reinforced composites, dissimilar metals and new materials. Due to the small amount of deformation of the instantaneous liquid phase connection, it is easy to remove the surface oxide film during the connection, making it better than the diffusion connection; the chemical composition and structure of the joint of the instantaneous liquid phase connection can be uniform with the base metal, which makes it better than brazing. This technology combines the advantages of soli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/24B23K20/10
CPCB23K20/10B23K20/24
Inventor 陈晓光李大成刘丽娟彭炤宇
Owner 河北宇天材料科技有限公司
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