A porous thin-wall cavity component and laser welding method
A laser welding and thin-walled technology, which is applied in laser welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of reduced welding structure strength, large welding deformation, poor welding process stability, etc., to reduce cracks, improve quality and effect , the effect of lowering the temperature
Active Publication Date: 2022-03-04
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Problems solved by technology
The weld seam is easy to crack during laser welding, and the stability of the welding process is poor
[0004] In addition, when such porous and thin-walled cavity structural parts are laser welded, the structural strength of the matrix is full of holes, and the strength of the structure drops a lot. When such workpieces are laser welded, the welding deformation is extremely large, which brings great troubles to the subsequent heat treatment and shape correction process.
[0005] In view of this, how to provide a porous and thin-walled cavity member suitable for high-temperature environments and a laser welding method that solves the decrease in strength and easy deformation of the welded structure of the porous and thin-walled cavity member are technical problems to be solved by those skilled in the art.
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[0033] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The detailed description and accompanying drawings of the following embodiments are used to illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments, without departing from the spirit of the present invention Any modification, substitution and improvement of parts, components and connection methods are covered under.
[0034] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will refer to the attached figure 1 - attached Figure 4 The present application will be described in detail in conjunction with the embodiments.
[0035] See attached figure 1 As shown, a porous thin...
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Abstract
The invention relates to a porous thin-wall cavity component and a laser welding method. The determining device includes: the laser welding method includes: coating a welding coolant on the position to be welded of the porous thin-walled cavity member; merging the positions to be welded of the porous thin-walled cavity component to be welded; The cavity in the porous thin-walled cavity member is fed with protective gas; the laser welding machine is started for welding. The laser welding method of the present invention applies the principle of convection cooling, impact cooling and air film cooling to the porous thin-walled cavity member to reduce the heat accumulation during laser welding, which is conducive to quickly reducing the temperature of the porous thin-walled cavity member to be welded, so that it can Reduce the occurrence of welding cracks due to temperature rise, and greatly improve the quality and effect of laser welding.
Description
technical field [0001] The invention relates to the technical field of laser welding of porous and thin-walled cavity components, in particular to a porous and thin-walled cavity component and a laser welding method thereof. Background technique [0002] The porous and thin-walled cavity structure is mostly used in high-temperature components such as engine combustion chambers and tail nozzles, and its materials are mostly high-temperature titanium alloy materials. For example, in an engine, the operating temperature of the combustion chamber or the exhaust pipe system is getting higher and higher, and a structure with high cooling efficiency is required to control the wall temperature of the structural part. [0003] At present, the component manufacturing process of this kind of porous and thin-walled cavity structure generally adopts superplastic or thermoforming to shape the profile, uses electrolytic photography or mechanical means to process vent holes, and uses laser ...
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IPC IPC(8): B23K26/21B23K26/70F02K1/78F02K9/34F02K9/62
CPCB23K26/21B23K26/703F02K1/78F02K9/34F02K9/62
Inventor 王彬曾元松杨璟马旭颐
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST