Method for welding plate by laser deep penetration fusion based on prefabricated flow channel

A deep penetration welding and laser welding technology, applied in laser welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of easy collapse of welding holes, spatter, unstable welding pool, etc., to avoid welding spatter and maintain pressure. Balance and reduce the effect of laser energy input

Active Publication Date: 2018-11-27
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Due to the high energy density (10 6 ~10 6 W/cm 2 ) under the irradiation of laser beams, deep penetration holes are formed in the process of laser welding stainless steel, which is beneficial to increa

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  • Method for welding plate by laser deep penetration fusion based on prefabricated flow channel
  • Method for welding plate by laser deep penetration fusion based on prefabricated flow channel
  • Method for welding plate by laser deep penetration fusion based on prefabricated flow channel

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Example Embodiment

[0033] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1-5 As shown, an embodiment of the present invention provides a method for laser deep penetration welding of a sheet based on a prefabricated flow channel, including the following steps:

[0035] Step 1: Provide the first workpiece 2 and the second workpiece 4 to be butted, and process the groove surface and the series of Z-shaped semicircular grooves 16 on the butt end faces of the first workpiece 2 and the second workpiece 4 respectively to form a prefabricated flow channel.

[0036] Optional, workpiece thickness is t>12 mm

[0037] Step 2: Accurately butt the first workpiece 2 and the second workpiece 4 to achieve precise alignment of the series of Z-shaped semicircular grooves 16 on the butt end surfaces of the first workpiece 2 and the second workpiece 4, thereby forming a complete series of ...

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Abstract

The invention relates to a method for welding a plate by laser deep penetration fusion based on a prefabricated flow channel. The method comprises the following steps: step 1, providing a first workpiece and a second workpiece to be butted; step 2, accurately butting the first workpiece and the second workpiece; step 3, providing a welding workbench, and placing a copper plate on the surface of the welding workbench; step 4, accurately butting the first workpiece and the second workpiece by using a welding clamp and clamping and fixing on the copper plate; step 5, providing an air suction device; step 6, providing a laser welding system; step 7, starting the laser welding system, and enabling a laser beam formed by focusing of a laser welding head to vertically irradiate the surface of theworkpieces; step 8, starting the air suction device; and step 9, after ending laser welding, closing a laser generator and the air suction device, and completing a welding process. The method is capable of, through the prefabricated special flow channel, enabling an internal pressure of a laser deep penetration fusion welding small hole to be balanced and enabling a weld crater to be downwards flowed, and effectively avoiding formation of weld spatter and a weld joint of a nail head.

Description

technical field [0001] The invention relates to the field of welding, in particular to a method for laser deep penetration welding of plates based on prefabricated runners. Background technique [0002] Laser welding is a high-energy-density welding method that uses laser as an energy carrier. It is one of the important aspects of the application of laser processing technology. The application of laser technology in welding has greatly promoted the development of welding technology. Laser welding has fast welding speed. , large depth, small deformation, can be welded at room temperature or under special conditions, and the welding equipment is simple, etc., and has been widely used in the industrial field. [0003] Laser deep penetration welding has the advantages of large depth-to-width ratio of welded joints, fast welding speed, small heat-affected zone, and generally no filler materials. And with the rapid development of fiber lasers with high power and high beam quality...

Claims

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Application Information

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IPC IPC(8): B23K26/21B23K33/00
CPCB23K26/21B23K33/00
Inventor 张明军王志军张远康
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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