Laser forming technological method for aluminum alloy component
An aluminum alloy component and laser forming technology, which is applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve problems affecting small hole pressure, blasting holes, etc., to increase the action time, reduce forming defects, and improve stability Effect
Pending Publication Date: 2021-01-22
齐齐哈尔金车工业有限责任公司
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Problems solved by technology
[0005] The invention provides a laser forming method for aluminum alloy components to overcome the problem that small holes with a large depth-to-width ratio are easily formed in the prior art by using a single laser forming method, which will affect small holes when there are defects in the structure. The pressure inside the hole, causing bigger problems or even blowing holes and other defects
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[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0024] Such as Figure 1-2 As shown, the present invention provides a kind of laser forming process method for aluminum alloy components, comprising:
[0025] Step S1, performing cleaning and pretreatment on the periphery of the area to be formed in the die-casting aluminum alloy to form a piece to be welded.
[0026] In this step, the cleaning pretreatment around the area to be formed in the die-casting aluminum alloy includes: mechanically grinding the area around the area to be formed in the die-casting aluminum alloy to remove the surface oxide layer, and cleaning with acetone to remove surface dirt.
[0027] Wherein, the pretreatment is completed within 2 hours. Due to the strong chemical activity of aluminum and alloys, it is easy to form oxide scales, and oxide scales have the ability to absorb moisture, and many of them contain insoluble sub...
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Abstract
The invention relates to the technical field of laser forming, in particular to a laser forming technological method for an aluminum alloy component. The laser forming technological method for the aluminum alloy component comprises the steps that cleaning pretreatment is conducted on the periphery of a to-be-formed area in die-casting aluminum alloy, and a to-be-welded part is formed; the pretreated to-be-welded part is fixed to a special forming tool through a clamping tool; a continuously output swing laser beam is adopted for welding, wherein during welding, the diameter of an annular lightspot of the swing laser beam is 0.1-2mm, and the swing frequency is 50-300HZ; and the laser adopts a sawtooth-shaped waveform and is modulated and output. According to the laser forming technologicalmethod for the aluminum alloy component, forming defects are greatly reduced by adopting a laser swing forming mode.
Description
technical field [0001] The invention relates to the technical field of laser forming, in particular to a laser forming process method for aluminum alloy components. Background technique [0002] Die-cast aluminum alloy has high strength, good corrosion resistance, electrical and thermal conductivity, casting and processing properties, and is widely used in the fields of automobiles, communication electronics, household appliances, engineering construction and aerospace. In industrial manufacturing, many structures need to be connected, among which forming technology is widely used. However, the forming process of cast aluminum alloy has always been difficult to obtain welds with good performance due to its own casting defects. [0003] Due to the low absorption rate of the aluminum alloy to the laser, a large output power is required to break through the critical threshold during forming, forming a pinhole effect and realizing deep penetration welding. However, the inside ...
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IPC IPC(8): B23K26/24B23K26/60B23K103/10
CPCB23K26/24B23K26/60B23K2103/10
Inventor 韩伟
Owner 齐齐哈尔金车工业有限责任公司