A method for correcting the overall flatness of a sheet welding flame tube eddy current device

Abstract

The invention discloses a sheet metal welding flame tube swirler integral flatness correction device and method. The sheet metal welding flame tube swirler integral flatness correction method comprises the steps that parts are lightly placed on a base (1), a plurality of swirles are installed and positioned, a swirler heat insulation screen is limited by a gland (2), and the parts are pressed by awedge block (3); the parts are loaded into a heating furnace together with the correction device, heat treatment parameters are adjusted, the charging temperature is heating up to 850-900 DEG C alongwith the furnace, the duration is 40-50min, cooling along with the furnace is carried out until the temperature is below 500 DEG C, and the parts are discharged from the furnace and air-cooled; and the appearances of the parts are checked, and the flatness of the swirlers, a theoretical diameter and roundness of the graduation circle are checked on three coordinates, and the subsequent welding iscontinued after meeting the requirements of drawings.

Description

technical field [0001] The invention belongs to the technical field of sheet metal welding, and relates to a device and method for correcting the overall flatness of a flame tube vortex device for sheet welding. Background technique [0002] Sheet welding ceramic flame tube is the core component of aero-engine. Due to the closed foreign manufacturing technology, the processing technology of new product technology and key technology mainly depends on exploration, test and verification summary. The quality of the flame tube is unstable in the trial production process, especially the welding Influenced by deformation, after the flame cylinder is assembled, the ceramics will fall off during machining, which seriously affects the assembly of the combustion chamber with the high-pressure turbine guide. [0003] Such as figure 1 and figure 2 As shown, multiple vortex devices are welded on the theoretical diameter of the head of the flame tube, and the whole is distorted after we...

AI Technical Summary

Problems solved by technology

[0002] The sheet welding ceramic flame tube is the core component of the aero-engine. Due to the closed foreign manufacturing technology, the processing technology of the new technology and key technology of the product mainly depends on exploration, test and verification summary. Influenced by deformation, after the flame tube is assembled, the ceramics will fall off during machining, which seriously affects the assembly of the combustion chamber with the high-pressure turbine guide

[0003] like figure 1 and figure 2 As shown, multiple vortex devices are welded on the theoretical diameter of the head of the flame tube, and the whole is distorted after welding. The welding deformation is large, and the flame tube involves welding and ceramics process, which causes serious deformation, which causes the index circle of the vortex device to be inconsistent with the inner and outer support rings and the inner mounting edge, and the overall flatness of multiple vortex devices is the design basis of the entire part, which cannot be carried out. Car processing and assembly, the high-conductivity fit size is seriously out of tolerance, which affects the assembly of the main combustion chamber, and the assembly of the main combustion chamber is difficult, resulting in high-conductivity honeycomb beating that cannot meet the design requirements. The flame tube works in high-temperature gas and withstands alternating high and low temperatures for a long time Stress, the vortex requires high overall flatness

[0004] Due to the narrow space in the area and the irregular shape of the welding part, the manual calibration period is long, the elasticity is large, and the calibration effect is not good. In the process, the calibration process is arranged after the inner fairing is welded, and multiple vortex heat shields are spot welded to the inner fairing. Finally, the traditional manual calibration can only slightly correct the local position, and cannot correct the overall flatness of multiple vortex devices. The calibration cycle is relatively long and has no practical effect

Images