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The method of tig welding surfacing welding sic particle reinforced aluminum matrix composite cladding

A particle-reinforced aluminum and composite material technology, applied in welding/cutting media/materials, welding media, welding equipment, etc., can solve the problems of high cost, easy cracking and peeling of the coating, and achieve easy operation and improve heat resistance. and the effect of improving vibration resistance and wear resistance

Inactive Publication Date: 2012-02-15
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the laser cladding layer on the surface of the aluminum alloy is easy to crack and peel off, and the cost is high; and provides a method for TIG welding SiC particle reinforced aluminum matrix composite cladding

Method used

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  • The method of tig welding surfacing welding sic particle reinforced aluminum matrix composite cladding
  • The method of tig welding surfacing welding sic particle reinforced aluminum matrix composite cladding

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specific Embodiment approach 1

[0008] Specific Embodiment 1: In this embodiment, the method of TIG welding and surfacing SiC particle reinforced aluminum matrix composite material coating is carried out in steps: 1. Remove the oxide film on the surface of the aluminum alloy, then clean it with ethanol or acetone, and then dry it; 2. Remove the oxide film on the surface of the filling material, then clean it with ethanol or acetone, and then dry it. The filling material is SiC particle reinforced aluminum matrix composite material welding wire or alloy powder; 3. Through TIG welding (non-melting electrode Inert gas shielded arc welding) to deposit the filler material on the surface of the aluminum alloy, that is, to obtain a SiCp / Al composite coating on the surface of the aluminum alloy. The TIG welding process conditions in Step 3: the welding current is 60-220 amperes, the arc voltage is 10-18 volts, the tungsten inert gas shielded short-arc welding, and the welding speed is 50-200 mm / min.

[0009] In step...

specific Embodiment approach 2

[0010] Embodiment 2: This embodiment differs from Embodiment 1 in that the inert gas described in step 3 is helium, the flow rate of helium is 0.2-1.2 cubic meters per hour, and the current form is AC. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the inert gas described in step 3 is a mixture of helium and argon, wherein the flow rate of argon is 0.1-1.2 cubic meters per hour, and the flow rate of helium is 0.2-1.2 Cubic meters per hour, the current form is AC or DC. Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention discloses a method for TIG welding and surfacing welding of SiC particle reinforced aluminum matrix composite material cladding, which relates to a preparation method of particle reinforced aluminum matrix composite material surface cladding. The invention solves the problems that the laser cladding layer on the aluminum alloy surface is easy to crack and peel off and the cost is high. The method of the invention adopts TIG welding to overlay and weld the SiC particle reinforced aluminum matrix composite material coating on the surface of the aluminum alloy. The invention has the characteristics of simple operation, wear resistance of the cladding layer is much higher than that of the base aluminum alloy and high bonding strength with the base aluminum alloy, thereby avoiding cracking and peeling, and at the same time, it is beneficial to improve the heat resistance and vibration resistance of the structure. Among all the cladding preparation methods of aluminum matrix composites, tungsten inert gas shielded arc welding surfacing welding has the value of popularization and application because of its strong adaptability to the form and size of the weldment, low cost of welding equipment, and flexible operation.

Description

technical field [0001] The invention relates to a method for preparing the surface coating of particle-reinforced aluminum-based composite materials. Background technique [0002] The preparation of aluminum matrix composite coatings reinforced by ceramic particles on the surface of aluminum alloys is one of the hotspots in the field of surface engineering research. At present, there are various technologies for preparing surface ceramic particle-reinforced composite materials, such as laser cladding technology, plasma cladding technology, thermal spraying technology, and argon arc cladding technology. In recent years, with the development and industrial application of high-power lasers, laser cladding technology on aluminum alloy surfaces has received widespread attention at home and abroad, especially laser cladding ceramic particle-reinforced composite coatings can significantly improve the surface properties of aluminum alloys. However, due to the high chemical activity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04B23K9/16B23K35/28
Inventor 汤文博牛济泰关绍康陈永李杏瑞卢广玺潘继民田昊汪喜和王典亮郭永良
Owner ZHENGZHOU UNIV