Welding method and fixture of thin-walled hollow titanium alloy blade
A welding method and titanium alloy technology, applied in welding equipment, welding accessories, manufacturing tools, etc., can solve the problems of easy collapse, difficulty in ensuring weld quality and thickness size, etc.
Active Publication Date: 2018-09-11
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
Since the profile of the blade 1 is irregular, and the wall thickness of the blade pot 11 and the blade back 12 is only 0.8 mm, which is very thin, it is easy to collapse in the argon arc welding project, and it is difficult to ensure the quality of the weld and the thickness dimension L
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[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.
[0024] Figure 1a Schematic diagram of the structure of a thin-walled hollow titanium alloy blade used in an aero-engine; Figure 1b for Figure 1a Schematic diagram of the cross-sectional structure; figure 2 It is a structural schematic diagram of a clamp for a thin-walled hollow titanium alloy blade according to a specific embodiment of the present invention; image 3 for figure 2 A partial cross-sectional schematic diagram of the structure.
[0025] As shown in Figures 1-3, the present invention provides a welding method for a thin-walled hollow titanium alloy blade. The thin-walled hollow titanium alloy blade 1 is composed of a blade pot 11, a blade back 12 and ...
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Abstract
The invention discloses a thin-wall hollow titanium alloy blade welding method. The method comprises the following steps that firstly, a blade basin portion and a blade back portion are repaired and combined, and to-be-welded portions, used for forming the front edge, of the blade basin portion and the blade back portion are cleaned through acetone; secondly, the blade basin portion and the blade back portion are aligned, a point on each of four corners is positioned through phi0.8 homogeneous welding rods, and the positioning length is smaller than or equal to 5 mm; and thirdly, a clamp is provided, ventilation pipelines are inserted into the blade basin portion and the blade back portion which are positioned in the second step, and then are placed on a blade basin template, the blade basin portion is attached to the blade basin template, after being folded, a blade back template clamps the blade basin portion and the blade back portion, the clamp is placed in an automatic welding machine, the distance between the to-be-welded positions used for forming the front edge and a welding gun is detected, the blade back template is compressed, automatic argon arc welding is carried out, and welding is completed. According to the thin-wall hollow titanium alloy blade welding method, the welding gap quality and the thickness size of the front edge of a blade can be effectively ensured. The invention further provides the clamp used for the above method.
Description
technical field [0001] The invention relates to a welding method of a thin-walled hollow titanium alloy blade and a fixture thereof. Background technique [0002] Figure 1a It is a schematic diagram of the structure of a thin-walled hollow titanium alloy blade used in an aero-engine, Figure 1b for Figure 1a Schematic diagram of the cross-sectional structure of Figure 1a , 1b As shown, the thin-walled hollow titanium alloy blade 1 is composed of a blade basin portion 11, a blade back portion 12 and a rib 13, and has a leading edge 14, a trailing edge 15, a large end 16 and a small end 17. Argon-arc welding needs to be carried out at the junction of the blade basin portion 11 and the blade back portion 12 at 14 places, and it is necessary to ensure that the thickness dimension L of the leading edge 14 is not greater than 3 mm. Since the profile of the blade 1 is irregular, and the wall thickness of the blade pot 11 and the blade back 12 is only 0.8 mm, which is very thi...
Claims
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IPC IPC(8): B23K9/16B23K9/23B23K9/235B23K9/32
CPCB23K9/16B23K9/23B23K9/235B23K9/32
Inventor 陈正初夏蓉邹旸许小虎彭杨赖秀芬尚延涛
Owner CHINA HANGFA SOUTH IND CO LTD