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CN-122007593-A - Friction welding method for ADC12 die-cast aluminum shell and 5052-O aluminum alloy jacket

CN122007593ACN 122007593 ACN122007593 ACN 122007593ACN-122007593-A

Abstract

The invention discloses a friction welding method for an ADC12 die-cast aluminum shell and a 5052-O aluminum alloy jacket, which comprises the following steps of 1, sleeving the 5052-O aluminum alloy jacket on the ADC12 die-cast aluminum shell, 2, setting working parameters of a friction welding machine, namely setting the rotating speed of a stirring head to be 1500-2000 rpm/min, setting the welding feeding speed of the stirring head to be 60-150mm/min and setting the pressing amount of the stirring head to be 0.3-0.6mm, and 3, starting the friction welding machine to weld and finishing welding along a middle gap of the 5052-O aluminum alloy jacket. The method has the advantages that the method can effectively avoid the defects of air holes, looseness and the like possibly existing in the ADC12 die casting piece from being reproduced in the welding line, simultaneously overcomes the hot cracking tendency possibly occurring in the traditional fusion welding of 5052-O, and realizes the reliable connection with high strength and high sealing property.

Inventors

  • LIU WEIWEN
  • LIU PEIJIE
  • ZHANG GUOTONG
  • Zeng Huaqiu
  • CHENG RUNQIN
  • ZOU YUANBIN
  • LIU ZHAOHUA

Assignees

  • 广东富成精密科技有限公司

Dates

Publication Date
20260512
Application Date
20260324

Claims (7)

  1. 1. A friction welding method for ADC12 die-cast aluminum housing and 5052-O aluminum alloy jacket, comprising the steps of: The method comprises the steps of 1, sleeving a 5052-O aluminum alloy jacket on an ADC12 die-cast aluminum shell, and respectively clamping the 5052-O aluminum alloy jacket and the ADC12 die-cast aluminum shell by using a clamp, wherein a middle gap of the 5052-O aluminum alloy jacket is positioned below a stirring head of a friction welding machine, the stirring head is a conical threaded stirring pin, the diameter of a shaft shoulder of the stirring head is 9mm, and the length of the stirring pin of the stirring head is 3mm; Setting the following working parameters of a friction welding machine, namely setting the rotating speed of the stirring head to be 1500-2000 rpm/min, setting the welding feeding speed of the stirring head to be 60-150mm/min and setting the pressing amount of the stirring head to be 0.3-0.6mm; And 3, starting a friction welding machine to weld, and finishing welding along the middle gap of the 5052-O aluminum alloy jacket.
  2. 2. The friction welding method for ADC12 die-cast aluminum housing and 5052-O aluminum alloy jacket of claim 1, wherein the size of the intermediate gap of the 5052-O aluminum alloy jacket is 0.4-0.6mm.
  3. 3. The friction welding method for ADC12 die-cast aluminum housing and 5052-O aluminum alloy jacket of claim 1 or 2, wherein the 5052-O aluminum alloy jacket has a thickness of 2.5-3.5mm.
  4. 4. The method for friction welding an ADC12 die-cast aluminum housing and a 5052-O aluminum alloy jacket as recited in claim 1 or 2, wherein the rotational speed of the stirring head is 1800 rpm/min.
  5. 5. The method of friction welding an ADC12 die-cast aluminum housing with a 5052-O aluminum alloy jacket as recited in claim 4, wherein the feed rate of the stirring head is 100mm/min.
  6. 6. The method of friction welding an ADC12 die-cast aluminum housing and a 5052-O aluminum alloy jacket as recited in claim 4, wherein the amount of depression of the stirring head is 0.5mm.
  7. 7. The method for friction welding an ADC12 die-cast aluminum housing and a 5052-O aluminum alloy jacket as recited in claim 2, wherein the stirring pin of the stirring head is directly 3-4mm.

Description

Friction welding method for ADC12 die-cast aluminum shell and 5052-O aluminum alloy jacket Technical Field The invention relates to a friction welding method for an ADC12 die-cast aluminum shell and a 5052-O aluminum alloy jacket. Background The 'double-in-one' design of the water-cooled motor shell of the new energy automobile aims to fully exert the advantages of different materials. ADC12 is an aluminum alloy widely used in die castings, has good fluidity and castability, and is suitable for manufacturing a main housing having a complicated structure, but has poor conventional fusion welding performance. 5052-O is Al-Mg series antirust aluminum, is in an annealed state, has excellent plasticity, corrosion resistance and cold processing performance, is often used as a jacket profile, and cannot be strengthened by heat treatment. The prior art has not been able to achieve a reliable connection of the two materials described above with high strength and high tightness. Disclosure of Invention The invention aims to solve the problem of providing a friction welding method for an ADC12 die-cast aluminum shell and a 5052-O aluminum alloy jacket, which realizes that metals are not melted by two different materials through a friction welding process, can effectively avoid the possible defects of air holes, looseness and the like in an ADC12 die casting to be reproduced in a welding line, overcomes the possible hot cracking tendency of 5052-O in the traditional welding process, and realizes the reliable connection with high strength and high sealing property. In order to solve the technical problems, the technical scheme adopted by the invention is that the friction welding method for the ADC12 die-cast aluminum shell and the 5052-O aluminum alloy jacket is characterized by comprising the following steps of: The method comprises the steps of 1, sleeving a 5052-O aluminum alloy jacket on an ADC12 die-cast aluminum shell, and respectively clamping the 5052-O aluminum alloy jacket and the ADC12 die-cast aluminum shell by using a clamp, wherein a middle gap of the 5052-O aluminum alloy jacket is positioned below a stirring head of a friction welding machine, the stirring head is a conical threaded stirring pin, the diameter of a shaft shoulder of the stirring head is 9mm, and the length of the stirring pin of the stirring head is 3mm; Setting the following working parameters of a friction welding machine, namely setting the rotating speed of the stirring head to be 1500-2000 rpm/min, setting the welding feeding speed of the stirring head to be 60-150mm/min and setting the pressing amount of the stirring head to be 0.3-0.6mm; And 3, starting a friction welding machine to weld, and finishing welding along the middle gap of the 5052-O aluminum alloy jacket. Preferably, the friction welding method for the ADC12 die-cast aluminum shell and the 5052-O aluminum alloy jacket is adopted, wherein the size of the middle gap of the 5052-O aluminum alloy jacket is 0.4-0.6mm. Preferably, the friction welding method for ADC12 die cast aluminum housing and 5052-O aluminum alloy jacket is adopted, wherein the thickness of the 5052-O aluminum alloy jacket is 2.5-3.5mm. Preferably, the friction welding method for ADC12 die-cast aluminum shell and 5052-O aluminum alloy jacket is adopted, wherein the rotating speed of the stirring head is 1800 rpm/min Preferably, the friction welding method for the ADC12 die-cast aluminum shell and the 5052-O aluminum alloy jacket is adopted, wherein the welding feeding speed of the stirring head is 100mm/min. Preferably, the friction welding method for ADC12 die-cast aluminum housing and 5052-O aluminum alloy jacket is adopted, wherein the pressing amount of the stirring head is 0.5mm. Preferably, the friction welding method for the ADC12 die-cast aluminum shell and the 5052-O aluminum alloy jacket is adopted, wherein the stirring pin of the stirring head is directly 3-4mm. The invention has the technical effects that: 1. According to the invention, metal is not melted by two different materials through a friction welding process, so that defects such as air holes, looseness and the like possibly existing in an ADC12 die casting can be effectively avoided from being reproduced in a welding line, meanwhile, the hot cracking tendency possibly occurring in the traditional 5052-O fusion welding process is overcome, and the reliable connection with high strength and high sealing performance is realized; 2. The product quality and reliability are improved, namely the weld strength is high (research shows that the strength of the base metal can reach 85-95% or even higher), the weld consistency is good, the deformation is small, the concentricity of the motor and the tightness of a water channel are ensured, and the service life and consistency of the product can be obviously improved; 3. The invention does not need welding wires and shielding gas through friction welding, has simple preparation before welding