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A gh3536 superalloy thin-walled cylinder seam welding method and device

A GH3536, superalloy technology, applied in the field of resistance seam welding methods and auxiliary devices for thin plates, can solve the problems of large heat input liquid metal expansion, complex alloy content, large shrinkage holes and segregation, etc., to reduce the number of shrinkage holes and The effect of size, ensuring the quality of the weld, and reducing the tendency of crack initiation

Active Publication Date: 2021-09-07
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the complex composition and high alloy content of the GH3536 superalloy, it has high crack sensitivity during welding. The welding method used in the traditional method is fast, high-current (current is about 8KA or more), and short-term welding. This welding method Due to the large current, the heat input will inevitably lead to a large expansion of the liquid metal, and the liquid metal is prone to large shrinkage cavities and segregation phases during the cooling and solidification stage. Under low conditions, cracks are easily initiated, leading to component failure

Method used

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  • A gh3536 superalloy thin-walled cylinder seam welding method and device
  • A gh3536 superalloy thin-walled cylinder seam welding method and device
  • A gh3536 superalloy thin-walled cylinder seam welding method and device

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0036] Positioning aids such as figure 2 As shown, the auxiliary tooling to ensure the straightness of the weld is as follows image 3 shown.

[0037] see figure 2 , is the limiting device for seam welding positioning of GH3536 high-temperature alloy thin-walled cylinder in this embodiment, including a limiter seat 2, which is detachably connected to the flange edge of the cylinder end face; pressure hook 1, One end of the pressure hook 1 is rotatably connected with the stopper seat 2, and the other end of the pressure hook 1 can be close to the surface of the cylinder after being overturned. When in use, align multiple identical stopper seats 2 with the flange edge and clamp them together with pliers, then rotate the pressure hook 1 to the side of the rectifier ring, and then try to install the rectifier ring so that the end face of the rectifi...

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Abstract

The invention discloses a seam welding method and device for a GH3536 high-temperature alloy thin-walled cylinder. The seam welding method is as follows: matching → pickling or grinding parts to be welded → trial assembly, correcting the parts to control the gap to be less than 2.5mm → cleaning with acetone to be welded surface → adjust the height of the tooling → positioning spot welding → seam welding → coloring inspection → X-ray inspection, in which the rectifier ring is positioned with the limit device during the trial assembly, and the supporting device is used when adjusting the height of the tooling. The invention reduces the number and size changes of shrinkage cavities, ensures the quality of the weld seam, reduces the repair welding process, ensures the surface size of the parts, reduces the influence of shrinkage cavities on the performance of the weld seam, and reduces the tendency of crack initiation.

Description

technical field [0001] The invention relates to the technical field of high-temperature alloy welding, in particular to a thin plate resistance seam welding method and an auxiliary device. Background technique [0002] Such as figure 1 As shown, it is the GH3536 superalloy thin-walled cylindrical part to be welded, and the thickness of the cylindrical body is 1.0-1.5mm. Due to the complex composition and high alloy content of GH3536 superalloy, it has high crack sensitivity during welding. The welding method adopted in the traditional method is fast, high-current (current is about 8KA or more), and short-time welding. This welding method Due to the large current, the heat input will inevitably lead to a large expansion of the liquid metal, and the liquid metal is prone to large shrinkage cavities and segregation phases during the cooling and solidification stage. Under such conditions, it is easy to initiate cracks and lead to component failure. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K11/093B23K11/34B23K11/36B23K37/053
CPCB23K11/093B23K11/34B23K11/36B23K37/053
Inventor 武国栋申静芳周佳伟刘兴红邱树彬李立新胡艳欢郑忠俊
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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