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Vacuum electron beam welding deformation control method and device for aero-engine flame tube

A vacuum electron beam, aero-engine technology, applied in electron beam welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of flame tube ablation, low engine life, unable to completely control the welding deformation of flame tube, etc., to improve detection The effect of efficiency

Active Publication Date: 2020-01-31
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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Problems solved by technology

If the standard is not met, it is easy to cause ablation of the flame tube and low engine life
[0003] At present, in the control of welding deformation, welding fixtures are mainly used to constrain the assembly position, but due to the limitations of structure and materials, the scheme of only using welding fixtures to constrain the assembly position cannot completely control the welding deformation of the inner and outer rings of the flame tube

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  • Vacuum electron beam welding deformation control method and device for aero-engine flame tube
  • Vacuum electron beam welding deformation control method and device for aero-engine flame tube

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment, but should not be interpreted as that the scope of the subject matter of the present invention is only limited to following embodiment, under the situation of not departing from above-mentioned technical thought of the present invention, all according to this field Various modifications, substitutions and alterations made by ordinary technical knowledge and common means are included in the scope of the present invention.

[0038] The method of using the deformation control device of the present invention first clamps the flame tube head 5 and the flame tube inner ring 2 into the device, inserts 12 pins 4 marked "before welding" for positioning welding, and then performs vacuum electron beam welding. Then clamp the parts that have been welded in the previous steps into this device again, put them into the outer ring 1 of the flame tube, and insert 12 "be...

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Abstract

The invention discloses a vacuum electron beam welding deformation control method and device for an aero-engine flame tube. Safety pins with the same number of mixing holes in the outer ring or innerring of the flame tube are adopted, and position and detection are carried out three times at two different positions. According to the vacuum electron beam welding deformation control method and device for the aero-engine flame tube, the problem that the position degree is large after the flame tube undergoes vacuum electron beam welding is solved, a device for pre-welding control and post-welding detection is adopted for inspecting an pre-welding butt joint gap and the relative position degree of film holes of the inner and outer ring of the flame tube and detecting the position degree of the film holes of the inner and outer ring of the flame tube after welding is carried out by specific welding parameters.

Description

technical field [0001] The invention relates to the field of welding deformation control, in particular to a method and a device for pre-welding deformation control and post-welding detection of air film hole position degree in aero-engine flame tube welding. Background technique [0002] Such as figure 1 As shown, the flame tube inner ring 2 and the flame tube outer ring 1 of the aero-engine are respectively welded with the head 5 by means of vacuum electron beam welding to form the cylinder body of the flame tube. After welding, the air film holes on the inner ring 2 of the flame tube and the outer ring 1 of the flame tube are not more than 0.5mm in the axial and angular positions. If the standard is not met, it is very easy to cause ablation of the flame tube and low engine life. [0003] At present, in the control of welding deformation, welding fixtures are mainly used to constrain the assembly position. However, due to the limitations of structure and materials, the ...

Claims

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Application Information

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IPC IPC(8): B23K15/00B23K15/06
CPCB23K15/00B23K15/0006B23K15/0026B23K15/0033B23K15/06
Inventor 陈昊丁清国周佳伟何刚
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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