A manufacturing process of an airfoil-shaped high-temperature-resistant steel plate welded blade

Abstract

The invention relates to a manufacturing process for wing-type high temperature resistant steel plate welded blades, and belongs to the technical field of manufacturing of fan blades. The manufacturing process is applied to various high temperature fans with the temperature of the working environment below 300 DEG C. The manufacturing process includes the steps of blanking of the blades, arc rolling of the blades, punch forming of the blades, shaping of the blades, mounting of dies, fixing of the windward faces of the blades, welding of reinforcing ribs, installing and welding of the leeside faces of the blades, postweld heat treatment of the blades, turning of the blades, welding of cover reinforcing plates and the like. Due to the adoption of the manufacturing process for the temperature resistant steel plate welded blades, the problems that currently, when the high temperature fans rotate at high linear velocity in a high temperature environment, aluminum alloy blades are prone to deformation and strength of cast steel blades is not enough are solved. Because the manufacturing process for the high temperature resistant steel plate welded blades is adopted, it can be guaranteed that the sizes and the shapes of the blades are basically consistent with those of arc-shaped cross sections of blades in original design, impeller performance of the fans is guaranteed, and manufacturing cost and machining cost are reduced.

Description

technical field [0001] The invention relates to a blade manufacturing process welded by airfoil-shaped high-temperature-resistant steel plates, which is applied to various high-temperature fans whose working environment is below 300°C, and belongs to the technical field of fan blade manufacturing. Background technique [0002] The high-temperature fan works in a high-temperature environment, and the fan impeller is subjected to a large centrifugal force caused by high-speed rotation, which requires high blade strength. The airfoil-shaped aluminum alloy blades on the market, due to the material, are prone to deformation when the temperature exceeds 150°C, and even break in severe cases; the airfoil-shaped steel blades cast by steel not only require large-scale casting equipment, die-casting molds, The production and processing costs are relatively large, and the strength of the cast blades often does not meet the requirements of high-temperature fans. Contents of the invent...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing aluminum alloy blades, which are prone to deformation at high temperatures and the strength of cast steel blades is not enough, the technical solution adopted in the present invention is: a manufacturing process for airfoil-shaped high-temperature resistant steel plate welding blades, including the following step:

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