Flexible laser welding gas protection device and welding method
A gas protection device, laser welding technology, applied in laser welding equipment, welding equipment, metal processing equipment and other directions, can solve the waste of resources such as manpower, equipment, materials, etc., can not achieve gas protection effect, gas protection effect is unstable, etc. problems, to achieve the effect of enhancing the gas protection effect, improving the welding production efficiency, and convenient and rapid loading and unloading.
Inactive Publication Date: 2021-04-09
BEIJING HANGXING MACHINERY MFG CO LTD
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Problems solved by technology
[0003] At present, in addition to special tooling, the inert gas is mostly directed to the surface of the workpiece to be welded through the general-purpose gas nozzle of the laser welding head. For welding joints of different structures, the gas protection effect of using a general-purpose gas nozzle with a fixed geometric size structure is unstable. Even for some special structures, the gas shielding effect can hardly be achieved; in addition, when using this kind of gas nozzle for laser welding of materials with strict atmosphere protection requirements such as titanium alloys and superalloys, it is usually necessary to adjust the angle of the shielding gas nozzle before welding. , The height of the end of the gas nozzle from the surface of the weld and the gas flow rate and other parameters can get a better gas protection effect, resulting in a waste of resources such as manpower, equipment, and materials, and seriously reducing production efficiency. Therefore, There is a need for a flexible welding gas shielding tool with strong adaptability and easy use to enhance the gas shielding effect of laser welding of titanium alloys, superalloys and other materials, thereby further improving welding efficiency
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Embodiment 1
[0050] Such as image 3As shown, in the embodiment, the workpiece to be welded is an "L"-shaped workpiece 3 with arc bending made of titanium alloy material, the weld seam form is a butt weld seam, and the thickness of the material to be welded is preferably 1mm to 8mm , The laser welding head 1 is equipped with a general-purpose shielding gas nozzle 2 with a fixed structure for argon protection during the welding process. The general-purpose gas shielding nozzle 2 is in the shape of a round tube with an outer diameter of 12 mm. If the tooling provided by the invention is not used, a complex and cumbersome shielding gas debugging process must be carried out before welding to make the gas nozzle achieve a satisfactory gas shielding effect. This process usually requires a lot of time and manpower.
[0051] In this embodiment, 43 joints 5 are connected to each other through 42 connecting shafts 9 to form a single strip-shaped multi-joint chain 4. The height of the joints 5 is 10m...
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The invention discloses a flexible laser welding gas protection device and a welding method. A flexible gas protection tool is composed of two strip-shaped multi-joint chains, the whole tool is in a rope shape and is well attached to the surface of a workpiece to be welded, the flexibility of the tool is improved, the tool is suitable for workpieces to be welded of different surface structures, excellent gas protective atmosphere is provided for metal materials with strict laser welding atmosphere protection requirements, such as titanium alloy and high-temperature alloy, and a high-quality laser welding seam with silvery white metal luster on the surface can be easily obtained.
Description
technical field [0001] The invention belongs to the technical field of laser welding process equipment, and in particular relates to a flexible laser welding gas protection device and a welding method. Background technique [0002] Laser welding of titanium alloys, superalloys and other materials has particularly strict requirements on gas protection. This kind of material has a great affinity for oxygen, hydrogen, nitrogen and other gases at high temperature during welding, which will cause pore defects in the joint or cause severe embrittlement of the joint and reduce the toughness of the joint. Therefore, when welding this kind of material, it is usually necessary to use inert gas to carry out strict gas protection around the weld to eliminate the influence of active gas (including oxygen, nitrogen and moisture in the air, etc.). [0003] At present, in addition to special tooling, the inert gas is mostly directed to the surface of the workpiece to be welded through the ...
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IPC IPC(8): B23K26/21B23K26/14B23K26/70
CPCB23K26/21B23K26/14B23K26/702
Inventor 谈哲君王志敏胡文浩孙少波孙璐璐王毅
Owner BEIJING HANGXING MACHINERY MFG CO LTD