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Sleeving and welding method for inner heat insulation cylinder and outer heat insulation cylinder of aero-engine

An aero-engine and welding method technology, applied in welding equipment, electron beam welding equipment, applications, etc., can solve problems such as easy generation of air holes and nail tips, increase deformation, and affect product performance, so as to achieve package welding process optimization and reduce The influence of product performance and the effect of improving the quality of welding

Pending Publication Date: 2021-12-31
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

Since the welding seam structure is in the form of overlapping non-penetrating welding, defects such as air holes and nail tips are prone to occur at the welding seam, and larger deformation will occur during repair welding, which will affect product performance. Therefore, a high welding pass rate must be ensured

Method used

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  • Sleeving and welding method for inner heat insulation cylinder and outer heat insulation cylinder of aero-engine
  • Sleeving and welding method for inner heat insulation cylinder and outer heat insulation cylinder of aero-engine
  • Sleeving and welding method for inner heat insulation cylinder and outer heat insulation cylinder of aero-engine

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Embodiment Construction

[0022] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0023] Such as Figure 1-2 As shown, the connecting structure of the inner heat insulation cylinder and the outer heat insulation cylinder required by the present invention, a method for the welding of the inner heat insulation cylinder 1 and the outer heat insulation cylinder 2 of an aero-engine, comprises the following steps: Step 1. Select an inner heat insulation cylinder 1 and an outer heat insulation cylinder 2 from the finished product warehouse of the inner heat insulation cylinder 1 and the outer heat insulation cylinder 2, and use sandpaper to clean the reinforcement ribs of the inner heat insulation cylinder 1 and the outer heat insulation cylinder 2 The surface of the inner wall is polished clean; step 2, select the same cross-section at the upper, middle and lower parts of the outer heat insulation cylinder 2 and the o...

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Abstract

The invention discloses a sleeving and welding method for an inner heat insulation cylinder and an outer heat insulation cylinder of an aero-engine. In the implementation process, by screening the sizes of parts in interference fit, the situation that the parts are locked during hot charging and cold charging is effectively avoided, technological parameters of sleeving and welding are optimized and adjusted, the sleeving and welding method for the inner heat insulation cylinder and the outer heat insulation cylinder of the aero-engine is improved and innovated, the welding quality of the inner heat insulation cylinder and the outer heat insulation cylinder of the aero-engine is improved, the qualification rate of one-time welding can be well guaranteed, and the influence of repair welding on product performance is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of aero-engine manufacturing, and in particular relates to a welding method for an aero-engine inner heat insulation cylinder and an outer heat insulation cylinder. Background technique [0002] The heat insulation cylinder of an aero-engine is assembled by electron beam welding after the inner heat insulation cylinder and the outer heat insulation cylinder are assembled together. The outer insulation cylinder is a typical thin-walled cylindrical part, with an inner diameter of Φ103.7, a length of 602, and a wall thickness of 1. The inner insulation cylinder is also a typical thin-walled cylindrical structure, with an inner diameter of Φ98, a length of 768, and a wall thickness of 0.8. Assembly interference Since the parts are all thin-walled structures, and the assembly interference is large, the assembly length is large. Locking is prone to occur when parts are hot-packed and cold-packed. Once locked, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/00B23K101/04
CPCB23K15/0006B23K15/0026B23K15/0033B23K15/0046B23K2101/04
Inventor 惠畅余盛龙祝帅吴杰李亚初姚伟李秀琼费鹏兰小令刘忠
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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