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Ultrasonic-assisted welding method for aluminum-magnesium heterogeneous alloy with Sn-Zn alloy as intermediate reaction material layer

A technology of reactive materials and heterogeneous alloys, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of inability to meet the service performance, low joint strength, poor joint performance, etc., and achieve good joint mechanical properties. The effect of short welding time and uniform composition

Pending Publication Date: 2019-02-22
东莞市新玛博创超声波科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When using traditional welding methods to weld Al-Mg heterogeneous alloys, a large number of brittle intermetallic compounds will inevitably be formed in the joint, resulting in poor joint performance and unable to meet the performance requirements
In addition, when using traditional welding methods for welding, it is necessary to use flux or carry out in a vacuum environment to avoid the formation of oxide films on the metal surface, and the joint strength is generally low

Method used

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  • Ultrasonic-assisted welding method for aluminum-magnesium heterogeneous alloy with Sn-Zn alloy as intermediate reaction material layer
  • Ultrasonic-assisted welding method for aluminum-magnesium heterogeneous alloy with Sn-Zn alloy as intermediate reaction material layer
  • Ultrasonic-assisted welding method for aluminum-magnesium heterogeneous alloy with Sn-Zn alloy as intermediate reaction material layer

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Experimental program
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Embodiment 1

[0041] A Sn-Zn alloy is used as an ultrasonic-assisted welding method of an aluminum-magnesium heterogeneous alloy of an intermediate reaction material layer, figure 1 As shown, the base metal 3 to be welded is selected from magnesium alloy and aluminum alloy respectively, and the intermediate reaction material layer 4 is selected from Sn-Zn alloys. Preferably, the Zn content in the Sn-Zn alloy of the intermediate reaction material layer 4 is 5%- twenty three%;

[0042] Such as Figure 2-3As shown, the reason for selecting Sn-Zn alloy as the intermediate reaction material layer 4 is that Sn-Zn alloy has a large solid solubility to Al and Mg, and the melting point and eutectic temperature of combined Sn-Zn alloy are relatively low. Zn alloys and aluminum alloys or magnesium alloys can be effectively welded at lower temperatures. The melting point of Sn-Zn alloys is about 350°C, and the temperature of about 350°C is 660°C relative to the melting point of aluminum alloys and the...

Embodiment 2

[0049] The main structure, principle and effect of this embodiment are the same as those of Embodiment 1, and will not be repeated here. The difference is that the aluminum alloy of the base material 3 to be welded is selected from 6160 aluminum alloy, and the magnesium alloy in the base material 3 to be welded is selected from For ME20M magnesium alloy, 80Sn-20Zn is selected as the intermediate reaction material layer 4 .

Embodiment 3

[0051] The main structure, principle and effect of this embodiment are the same as those of Embodiment 2, and will not be repeated here. The difference is that in the reaction step of the components to be welded, preferably, the reaction temperature of the intermediate reaction material layer 4 is raised to 340 ℃, the time for applying welding ultrasonic to the components to be welded is 5 seconds.

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Abstract

The invention discloses an ultrasonic-assisted welding method for aluminum-magnesium heterogeneous alloy with Sn-Zn alloy as an intermediate reaction material layer. The Sn-Zn alloy having high solidsolubility with aluminum and magnesium is selected as the intermediate reaction material layer, in addition, the intermediate reaction material layer of the Sn-Zn alloy and the aluminum-magnesium heterogeneous alloy can be subjected to welding ultrasound at the low welding temperature under the atmospheric environment, effective welding is achieved, and brazing flux is not needed; and the environment friendly effect is achieved, the welding time is short, welding is efficient, an obtained connector structure is uniform in component, and the mechanical properties are good.

Description

technical field [0001] The invention relates to the technical field of aluminum-magnesium heterogeneous alloy welding, in particular to an ultrasonic-assisted welding method for aluminum-magnesium heterogeneous alloys in which a Sn-Zn alloy is used as an intermediate reaction material layer. Background technique [0002] As typical lightweight alloys, aluminum alloys and magnesium alloys are increasingly used in the fields of ships, aerospace, automobiles, and 3C electronics. However, aluminum alloys and magnesium alloys have their own characteristics and advantages, and there are certain differences in physical and chemical properties. Welding the two into a composite structure can exert the respective characteristics of the two metals, obtain special properties, and further expand the application range of the two metals. Therefore, it is urgent to develop and develop the technology of aluminum-magnesium heterogeneous alloy welding. [0003] When welding aluminum-magnesium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/10B23K20/22B23K20/24
CPCB23K20/10B23K20/22B23K20/24
Inventor 赖志伟
Owner 东莞市新玛博创超声波科技有限公司