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Method for correcting deformation of welding part of nozzle casting

A technology for welding parts and castings, which is applied in the field of deformation correction of investment precision castings, can solve problems such as difficult to determine the heating range, difficult correction, difficult correction, etc., to achieve rapid detection, meet product quality requirements, and improve accuracy.

Pending Publication Date: 2022-03-15
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of difficulty in correcting the structural parts of nozzle-type welded parts in the prior art, the present invention provides a method for correcting the deformation of the welding part of nozzle-type castings, which solves the difficulty of detecting the position of the deformed part after correction and provides a controllable correction method
Effectively solve the problems such as difficult to correct, difficult to detect, difficult to determine the heating range of the thick part of the nozzle structure

Method used

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  • Method for correcting deformation of welding part of nozzle casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Nozzle Housing

[0046] 1) The nozzle shell is welded to the repair welding casting 2, and a deformed position is formed at the welding place. The appearance of the repair welding casting 2 of the nozzle shell is polished to make the repair welding part smooth and flat.

[0047] 2) Mark the size of the center of the hole on the deformed part, and compare it with the standard qualified parts. Determine the deformation position and deformation amount of the welded part according to the line spacing, and expand the deformation range to 5mm a week for contour marking.

[0048] 3) Install the marked repair welding casting 2 on the correction tooling, and the parts to be corrected are completely exposed. To ensure the level of the casting, fasten the welding parts on the correction tooling.

[0049] 4) Open the acetylene-oxygen device (heating gun), use the flame core to heat in the marked range, use an infrared temperature measuring device to detect the heating temperature, tu...

Embodiment 2

[0054] mouth

[0055] 1) The nozzle and the repair welding casting 2 are welded and connected to form a deformed position at the welding point, and the repair welding casting 2 of the butt nozzle is ground to make the repair welding part smooth and clean.

[0056] 2) Mark the center size of the deformation position and compare it with the standard qualified parts. According to the line spacing, the deformation position and deformation amount of the welded parts are clarified, and the deformation range is expanded by about 5mm for contour marking.

[0057] 3) The marked repair welding casting 2 is installed on the correction tooling, so that the parts to be corrected are completely exposed and unobstructed. When the casting is in a horizontal state, fasten the welding parts on the correction tooling.

[0058] 4) Open the acetylene-oxygen device (heating gun), use the flame core to heat in the marked range, use an infrared temperature measuring device to detect the heating tempe...

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Abstract

The invention provides a method for correcting deformation of a welding part of a nozzle type casting, relates to the field of deformation correction of investment precision castings, and aims to solve the problems that the correction heat affected zone of the nozzle type casting is large and the correction effect cannot be rapidly detected and carry out correction in combination with the heating characteristic of acetylene-oxygen. Rapid detection of the correction effect of the nozzle type welding part and resistance to reversible deformation can be achieved, and meanwhile the problems that deformation of the nozzle type welding part is difficult to correct and detect, and the heating range is difficult to determine are solved; by means of the correcting method, the qualification rate and correcting efficiency of the nozzle type welding parts can be improved, the product quality requirement can be met, and meanwhile the requirement for rapid assembly in production is met. The invention solves the problem that the position degree of the deformed part after correction is difficult to detect, and provides a controllable correction method. The problems that the thick and large part of the nozzle structural part is difficult to correct and detect, and the heating range is difficult to determine are effectively solved.

Description

technical field [0001] The invention relates to the field of deformation correction of investment casting precision castings, in particular to a deformation correction method for welding parts of nozzle type castings. Background technique [0002] Nozzle-type structural parts made by investment casting method are easily deformed after the welding process. Due to the low heat treatment and tempering temperature, the thick and large parts are difficult to be successfully corrected at one time. Repeated correction wastes time and is detrimental to the performance of the casting. If a correction die is used to correct the thick parts, the thin walls or connecting parts of the structural parts are easily deformed by heat; in this way, the final qualification rate of the repair welding parts is low. Furthermore, the flame rectification method is used. The specific method of flame rectification is to heat the part of the deformed structural member, that is, the elongated part of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D3/16B21D37/16B21C51/00
CPCB21D3/16B21D37/16B21C51/005
Inventor 潘锐王玮毛树根魏红红王凡张妮闫志芳聂欢
Owner AECC AVIATION POWER CO LTD
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