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Assembly welding method for ring-shaped thin-walled sheet metal part of gas turbine and welding electrode

A gas turbine and welding method technology, which is applied to the assembly of complex structures in a narrow space on annular sheet metal welding assemblies, and the field of special welding electrodes, which can solve problems such as assembly of complex structures, optimize the processing process, reduce the deformation of parts, and reduce rework. Effects of Repair Situations

Active Publication Date: 2020-12-18
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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Problems solved by technology

[0012] The invention aims to provide a set of welding electrodes and corresponding assembly and welding methods for the assembly and welding of annular thin-walled sheet metal parts similar to gas turbines, and solve the assembly and welding problems of complex structures in narrow spaces on annular sheet metal welding assemblies, which is reasonable and effective for spot welding connections and assembly

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  • Assembly welding method for ring-shaped thin-walled sheet metal part of gas turbine and welding electrode
  • Assembly welding method for ring-shaped thin-walled sheet metal part of gas turbine and welding electrode
  • Assembly welding method for ring-shaped thin-walled sheet metal part of gas turbine and welding electrode

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Embodiment Construction

[0040] The technical conception and implementation of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] In this embodiment, a special welding electrode and assembly and welding methods for the narrow space and complex structure on the annular sheet metal welding assembly are designed:

[0042] (1) Design basis: According to the actual space structure of the parts and the design and processing requirements, a set of resistance spot welding electrode devices was independently designed and manufactured, and the assembly process was reasonably arranged according to the electrodes;

[0043] (2) Technical solution: According to figure 1 , figure 2 As shown, combined with the actual space size and welding method, with a set of special resistance spot welding welding electrode device independently designed and manufactured, it can meet the requirements of welding seam 1, welding seam 2, welding seam...

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Abstract

The invention discloses an assembly welding method for a ring-shaped thin-walled sheet metal part of a gas turbine and a welding electrode. The welding electrode is divided into an upper electrode anda lower electrode of different shapes; during assembly welding, multiple pressure diffusing boxes are connected by spot-welding, are separately welded with a first reinforcing ring and a second reinforcing ring to define an integer; then, the pressure diffusing boxes, the first reinforcing ring and the second reinforcing ring are integrally arranged in a ring-shaped channel with inner and outer rings, the first reinforcing ring and the inner ring as well as the second reinforcing ring and the outer ring are separately welded to finally accomplish spot-welding connection of all pressure diffusing boxes, the inner ring and the outer ring. A welding sequence of the assembly welding method ensures welding among multiple assemblies without interference, and is stable in welding quality; and different welding electrodes are used for different welding positions to realize welding, in a narrow space, of a ring-shaped sheet metal assembly part.

Description

technical field [0001] The invention belongs to the technical field of welding and assembly, and in particular relates to an assembly and welding method and a special welding electrode for a complex structure in a narrow space on an annular sheet metal welding assembly. Background technique [0002] Such as figure 1 , figure 2 As shown, in the process of processing the key components of the gas turbine, it is necessary to assemble several diffuser box cavity structures in the thin-walled annular space composed of the inner and outer layers, and the assembly and connection method is resistance spot welding. This type of part is a typical large-diameter sheet metal welding assembly, with a diameter of more than 650mm. The width difference between the two ends is large, the structure is complex, and the accessibility of the welding process is extremely poor. How to carry out effective welding processing has always been a key technical bottleneck in the development process. S...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/11B23K11/36
CPCB23K11/11B23K11/36
Inventor 邓元贵陈昊陈成李祖卫陈利丁清国吴欣星何刚熊晓钰游宏亮
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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