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Welding method of high-volume-content ceramic reinforced Al-base composite material

A technology for strengthening aluminum matrix and composite materials, applied in welding equipment, metal material coating process, ion implantation plating, etc. Good wettability, good connection, improved shear strength effect

Active Publication Date: 2013-06-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of poor wettability and low brazing joint strength of existing high-volume-content ceramic-reinforced aluminum-matrix composite materials, and provides a welding method for high-volume-content ceramic-reinforced aluminum-matrix composite materials

Method used

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  • Welding method of high-volume-content ceramic reinforced Al-base composite material
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  • Welding method of high-volume-content ceramic reinforced Al-base composite material

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specific Embodiment approach 1

[0009] Specific embodiment 1: The welding method of the high-volume ceramic-reinforced aluminum-based composite material of this embodiment is carried out according to the following steps: 1. The surface to be welded is treated: Al-Si-Mg brazing filler metal and high-volume ceramic-reinforced aluminum-based The surface of the composite material to be welded is polished with sandpaper, and then the brazing filler metal and the high-volume ceramic reinforced aluminum-based composite material are immersed in acetone for ultrasonic cleaning for 10-20 minutes, and dried; 2. Sputter deposition of Ti active layer: after step one treatment The high-volume ceramic-reinforced aluminum-based composite material is placed in a vacuum magnetron sputtering equipment, and the Ti active layer with a thickness of 500nm~2μm is deposited by sputtering; 3. Vacuum brazing: high volume after sputtering the Ti active layer The content ceramic reinforced aluminum-based composite material is placed in a ...

specific Embodiment approach 2

[0012] Specific embodiment two: this embodiment is different from specific embodiment one in that in step one, ultrasonic cleaning is performed for 10 minutes. Others are the same as the first embodiment.

specific Embodiment approach 3

[0013] Specific embodiment three: this embodiment is different from specific embodiment one in that the ultrasonic cleaning in step one is 20 minutes. Others are the same as the first embodiment.

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Abstract

The invention provides a welding method of a high-volume-content ceramic reinforced Al-base composite material, which relates to a welding method of the ceramic reinforced Al-base composite material and aims to solve the problems of poor wettability of brazing filler metal for brazing the prior high-volume-content ceramic reinforced Al-base composite material and low strength of a brazing joint. The method comprises the following steps that: firstly, a surface to be welded is treated; secondly, a sedimentary Ti active layer is sputtered; and thirdly, vacuum brazing is conducted, the high-volume-content ceramic reinforced Al-base composite material is cooled to the room temperature along with a furnace, and then the welding of the high-volume-content ceramic reinforced Al-base composite material is completed. By adopting the method, the wettability of the brazing filler metal on the surface of base metal is good, the brazing filler metal can be effectively connected with the reinforcedAl-base composite material, and the shear strength of the joint is high. The welding method is applied to the field of the welding of the ceramic reinforced Al-base composite material.

Description

Technical field [0001] The invention relates to a welding method of ceramic reinforced aluminum-based composite materials. Background technique [0002] Composite materials are materials with strong vitality that have emerged in response to the needs of modern scientific development. Aluminum has many characteristics in the production of composite materials, such as light weight, low density, good plasticity, aluminum-based composite technology is easy to master and easy to process. In addition, aluminum-based composite materials have high specific strength and specific rigidity, good high-temperature performance, more fatigue and wear resistance, good damping performance, and low thermal expansion coefficient. Like other composite materials, it can combine specific mechanical and physical properties to meet the needs of the product. Therefore, aluminum matrix composites have become one of the most commonly used and important materials in metal matrix composites. However, the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/008B23K1/20C23C14/35C23C14/14
Inventor 林铁松何鹏王百慧
Owner HARBIN INST OF TECH