Welding seam allowance of double-welding-seam structure cartridge receiver and machining method

Abstract

The invention provides a welding seam allowance of a double-welding-seam structure cartridge receiver and a machining method. The welding seam allowance comprises a front seam allowance and a rear seam allowance and located on two connecting plates between an inner cartridge receiver and an outer cartridge receiver respectively, the welding seam of the front seam allowance is obliquely arranged, the fit clearance is not affected by the axial size, and meanwhile the self-centering effect can be achieved; and concentricity of the inner cartridge receiver and the outer cartridge receiver is guaranteed, and also blind installation is facilitated, and assembly efficiency can be improved; and meanwhile, the rear seam allowance adopts a cylindrical surface welding seam, so that assembly precisioncan be effectively improved. According to the welding seam allowance, precise and small clearance fit of the cartridge receiver of a double-welding-seam structure is achieved, the welding quality ofworkpieces is improved, the assembly relation of two workpieces to be welded is determined, the shape and size relation of the two welding seam allowances is designed, corresponding machining is conducted, and the purposes that two parallel welding seams are precise and free of interference, and small clearance fit is achieved are achieved.

Description

technical field [0001] The invention relates to the field of welding of casing parts, in particular to a welding notch and a processing method of a casing with a double weld seam structure. Background technique [0002] In the processing of aero-engine combustor parts, there is a type consisting of two inner and outer casings, the inner casing and the outer casing are connected by an annular first connecting plate 7 and a second connecting plate 8, the first connecting plate 7 and the The second connecting plate 8 adopts the structural form of vacuum electron beam welding seam connection, and the two welding seam structures appear as two concentric, different diameters, and annular weld seams at different axial size positions, such as figure 1 shown. For the welding structure design of this type of weld, since vacuum electron beam welding has strict requirements on the welding gap, if the two weld seams are improperly designed, it is easy to cause mutual interference and mu...

AI Technical Summary

Problems solved by technology

For the welding structure design of this type of weld, since vacuum electron beam welding has strict requirements on the welding gap, if the two weld seams are improperly designed, it is easy to cause mutual interference and mutual influence, and cannot be assembled to the corresponding position; In addition, one side of the double weld must be located in a position that is not conducive to observation during the process of vehicle distribution and trial assembly, which belongs to "blind assembly", and the form of the weld seam directly affects the quality of welding assembly

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