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Low-temperature ultrasonic assistance aluminum alloy welding method capable of obtaining full solid solution connector

An ultrasonic-assisted, solid-solution technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of easy softening of base metal, high welding temperature, and low mechanical properties of joints

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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  • Application Information

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Problems solved by technology

However, the current light alloy welding technologies such as various fusion welding, brazing and vacuum transition liquid phase bonding (transient liquid phase bonding, TLP welding), etc., have problems such as high welding temperature, easy softening of base metal, difficult removal of oxide film, joint The mechanical properties are generally low and their respective deficiencies

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  • Low-temperature ultrasonic assistance aluminum alloy welding method capable of obtaining full solid solution connector
  • Low-temperature ultrasonic assistance aluminum alloy welding method capable of obtaining full solid solution connector
  • Low-temperature ultrasonic assistance aluminum alloy welding method capable of obtaining full solid solution connector

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Embodiment 1

[0066] A method for low-temperature ultrasonic-assisted aluminum alloy welding to obtain a full solid solution joint, comprising a base material 3 to be welded and an intermediate reaction material layer 4, comprising the following steps:

[0067] Intermediate reaction material layer screening step, condition one, the melting temperature of the intermediate reaction material layer 4 is lower than the melting point of the base material 3 to be welded by 195-205 ° C, or the common element between the intermediate reaction material layer 4 and the base material 3 to be welded The crystallization temperature is 150-300°C lower than the melting point of the base material 3 to be welded. Condition 2: The maximum solid solubility between the intermediate reaction material layer 4 and the main elements of the base material 3 to be welded reaches at least 10%. Condition 3: The intermediate reaction material The difference in atomic radius between the main elements of layer 4 and the bas...

Embodiment 2

[0114] 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 in the step of removing the oxide film, the physical state of the base material 3 to be welded is solid, and the intermediate reaction material layer 4 The physical state is solid;

[0115] In the α-Al solid solution precipitation step, the physical state of the base metal 3 to be welded is solid, and the physical state of the intermediate reaction material layer 4 is solid;

[0116] In the α-Al solid solution growth step, the physical state of the base metal 3 to be welded is solid, and the physical state of the intermediate reaction material layer 4 is solid;

[0117] In the step of completing the full α-Al solid solution joint, the physical state of the base metal 3 to be welded is solid, the intermediate reaction material layer 4 disappears and transforms into a full α-Al solid solution joint, and the physical state...

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Abstract

The invention discloses a low-temperature ultrasonic assistance aluminum alloy welding method capable of obtaining a full solid solution connector. The welding method comprises the following steps that to-be-welded metal bases and an intermediate reaction material layer are included, aluminum alloy or aluminum-based composites are selected and used as the to-be-welded metal bases, and pure zinc foil is selected and used as the intermediate reaction material layer; mechanical grinding and ultrasonic cleaning are conducted on to-be-welded faces of the to-be-welded metal bases; the upper layer and the lower layer are both the to-be-welded metal bases, and the intermediate reaction material layer is put between the two to-be-welded metal bases; an ultrasonic tool head exerts pressure on a to-be-welded assembly, the pressure value is 0.1-0.2 MPa, then the temperature of the intermediate reaction material layer is increased to 450-480 DEG C, welding ultrasonic vibration is conducted for 80-90 seconds, and isothermal solidification is conducted; and after isothermal solidification, cooling is conducted until the room temperature is achieved. The whole welding process can be completed under atmospheric conditions, isothermal solidification time is shortened, and the full solid solution connector is obtained and high in shearing strength.

Description

technical field [0001] The invention relates to the technical field of ultrasonic welding of aluminum alloys and aluminum-based composite materials, in particular to a method for low-temperature ultrasonic-assisted welding of aluminum alloys to obtain full solid solution joints. Background technique [0002] Aluminum alloy is a typical lightweight material with characteristics of low density, high specific strength and specific stiffness. Its processing and application can reduce the quality of mechanical structures on the basis of ensuring mechanical properties, so as to realize the lightweight of structural parts. Therefore, it is widely used in aerospace, automobile, rail transit, electronics and other fields to achieve the purpose of reducing the weight of parts. [0003] The high-performance manufacturing of structural parts made of lightweight materials is inseparable from the support of mature welding technology. However, the current light alloy welding technologies ...

Claims

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Application Information

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IPC IPC(8): B23K20/10B23K20/02B23K20/26
CPCB23K20/026B23K20/10B23K20/26
Inventor 赖志伟
Owner 东莞市新玛博创超声波科技有限公司
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