A double-spoke turbine disk pressure welding method

Abstract

The invention relates to a pressurization welding method of a double-spoke plate turbine disc. In the method, a graphite pressing head (1), an upper base plate (2), graphite force bearing pillars (3), a lower base plate (4), a graphite base (5), a plurality of graphite force bearing blocks (6) and a double-spoke plate turbine disc blank (7) are applied, wherein the double-spoke plate turbine disc blank (7) is shown in the drawing 2; the double-spoke plate turbine disc blank comprises two blank discs in longitudinal symmetry; the two blank discs comprise annular welding parts 12, pressurization force applying parts 13 and non-welding easy-deformation parts (10, 11); and the method comprises six steps. According to the pressurization welding method, the welding deformation amount of the double-spoke plate turbine disc is controlled through graphite blocks and stainless steel sheets, the structure is simple, the assembly and disassembly are convenient, and interchangeability and economy are relatively good.

Description

Technical field: [0001] Aeroengine, gas turbine wheel processing field. Background technique: [0002] The double-spoke turbine disk is a new type of aeroengine turbine disk structure. This structure has the characteristics of strong bearing capacity, small thermal inertia and mechanical inertia, and light weight, which can effectively reduce the weight of the engine turbine component structure. It is usually composed of two half disks on the left and right by welding, and the manufacturing and welding processes are difficult. [0003] The usual double-spoke turbine disk is generally connected by diffusion connection under high temperature vacuum pressure. Since there is a hollow cavity inside the disk body, it cannot be reprocessed after welding. Therefore, its structural size must be processed in place before welding. Its structural form The particularity of the welding process makes the welding process difficult. Since high-temperature welding will inevitably lead to def...

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Problems solved by technology

[0003] The usual double-spoke turbine disk is generally connected by diffusion connection under high temperature vacuum pressure. Since there is a hollow cavity inside the disk body, it cannot be reprocessed after welding. Therefore, its structural size must be processed in place before welding. Its structural form The particularity of the welding process makes the welding process difficult, because high temperature welding will inevitably lead to deformation of the parts, therefore, it is necessary to design a welding positioning device to ensure that the deformation of the turbine disk is as small as possible, and at the same time, it is necessary to ensure that the welding connection is reliable

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