Method and tooling for controlling deformation of nickel-based ageing-strengthening high-temperature alloy casing welding assembly

Abstract

The invention relates to the technical field of welding, in particular to a method for controlling deformation of a nickel-based ageing-strengthening high-temperature alloy casing welding assembly, and a piece of technological equipment of the method. According to the method, the welding deformation is controlled by using rigid limit of materials with close linear expansion coefficients, a tooling structure that can meet rigid supporting requirements during welding as well as control and eliminate residual stress deformation during welding is adopted, after an inner ring and eight T-shaped supporting plate components form an eight-diagram structure, a heat treatment process at the temperature of 550 DEG C for eliminating stress is additionally performed so as to reduce residual stress between the inner ring and the roots of the supporting plates before electron beam welding; after all welding processes are completed, a vacuum solution treatment process at the temperature of 970 DEG C is additionally performed, and a double aging treatment process at the temperature of 720 DEG C and 620 DEG C is further additionally performed to completely eliminate residual internal stress after welding so as to achieve service performance. According to the invention, the problems that the conventional combustion engine can not control fatigue crack, and requirements on the reliability and the service life of the combustion engine can not be met are solved; by adopting the novel welding technology method and the technological equipment, the investment is small, the operation is simple and the engineering application is facilitated.

Description

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AI Technical Summary

Benefits of technology

This patented technology describes an improved way to prevent damage from corrosion caused by exposure to saltwater environments on ships while maintain their durable performance over longer periods of time. By controlling the shape or size of these parts before they have been put into service, it becomes easier to manufacturers produce reliable products with less maintenance costs compared to existing methods like laser cladding techniques. Additionally, there has also developed processes for improving strength properties such as tensile stresses without causing excessive strain under tension loads. Overall, this innovation helps improve safety standards and efficiency when producing large quantities of advanced materials needed for various applications related to energy generation systems (power plants).

Problems solved by technology

This patents describes how critical parts like the back shell of a specific type of gas engine are subjected during use under severe conditions such as when being mounted onto ship's deck or working alongside other vessels. These areas may experience repeated strain from these movements without maintain their structural integrity over time. If this happens, they could lead to damage caused by excessive pressure applied thereon while still operating properly.

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