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Welding method of zigzag blades

A welding method and zigzag technology, applied in the field of machinery, can solve problems such as inability to weld, small outlet width, and difficult welding of blades and wheel covers, so as to improve welding quality and welding strength, reasonable welding process, and improve safety and reliability Effect

Inactive Publication Date: 2013-05-15
NANTONG DART POLLRICH FAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The welding quality of the fan blades directly affects the product quality of the fan. A series of outlets such as 8-09, 9-12, and B171 have small outlet widths, a large number of blades, and blade rotation. For long and small impellers, it is very difficult to weld the blade and the wheel cover. Usually, when the wheel cover and the blade are welded, only the connection part that can be reached by the inlet and outlet welding torch is welded, and the middle part cannot be welded at all, which seriously affects the welding strength and product safety.

Method used

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Embodiment Construction

[0011] A welding method for sawtooth blades, the welding method comprises the following steps:

[0012] 1) Plane the blade with sawtooth;

[0013] 2) Assemble the blade and the wheel cover, and adjust the blade sawtooth position to match the profile of the wheel cover;

[0014] 3) Use the method of spraying to find out the matching position of the blade saw teeth on the wheel cover, and mark the position;

[0015] 4) Take out the wheel cover, draw a serration outline on the serration mark, and mill the serrations of the wheel cover according to the serration outline, so that the serrations of the blade fall into the serration groove of the wheel cover, and then apply welding. After the welding is uniform, the wheel cover and the wheel cover are completed. Assembling and welding of blades.

[0016] The above is only the preferred embodiment of the present invention, it should be pointed out that: for those skilled in the art, without departing from the principle of the presen...

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PUM

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Abstract

The invention discloses a welding method of zigzag blades. The welding method includes the following the steps: (1) planning the blades and sawing teeth on the blades, (2) splicing the blades and a wheel cover and adjusting sawteeth positions of the blades to fit in with molded lines of the wheel cover, (3) finding out matching positions of sawteeth to the wheel cover by adopting a spray-painted method and marking the matching positions, and (4) taking out the wheel cover, drawing a contour line of the sawteeth on the sawteeth mark, milling the sawteeth of the wheel cover according to the contour line of the sawteeth, enabling the sawteeth of the blades to fall into sawtooth grooves of the wheel cover, and then welding and achieving splicing and welding of the wheel cover and the blades after welding is even. The welding method of the zigzag blades has the advantages of being reasonable in welding technology, capable of effectively improving welding quality and welding strength of the blades and increasing safe reliability of operation, and suitable for manufacturing impellers with high requirements of cost and welding accuracy such as titanium material, high-strength plates and 2205 stainless steel.

Description

technical field [0001] The invention belongs to the field of machinery, and in particular relates to a welding method for sawtooth blades. Background technique [0002] The welding quality of the fan blade directly affects the product quality of the fan. A series of impellers such as 8-09, 9-12, and B171 have a small outlet width, a large number of blades, and a small blade spin length. It is difficult to weld the blades and wheel cover. When the cover and the blade are welded, only the joints where the inlet and outlet welding torches are stretched are welded, and the middle part cannot be welded at all, which seriously affects the welding strength and the safety of the product. Contents of the invention [0003] Purpose of the invention: The purpose of the present invention is to solve the deficiencies of the prior art and provide a welding method for saw-toothed blades that has a reasonable process and can effectively improve the welding quality and welding strength of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/04
Inventor 杜娟
Owner NANTONG DART POLLRICH FAN