A method for overall manufacturing of a large-sized, thin-walled annular oxygen-reinforced frame

Abstract

An overall manufacturing method of a large-sized, thin-walled ring with an oxygen-reinforced frame, including the following steps: designing a special substrate for laser melting deposition; by segmenting the oxygen-reinforced frame up and down along the abrupt change in wall thickness, selecting a laser with a higher power and a larger scanning speed The melting deposition process parameters and the corresponding scanning strategy form the lower section, and then use the slicing software to obtain the laser processing program codes of the upper and lower section layers, and import the equipment to carry out the laser melting deposition forming of the lower section, take it out and perform stress relief annealing, and then the end face of the lower section Complete the deposition of the upper part for the substrate, and then perform heat treatment and machining to obtain the final state parts, which solves the problems of long processing cycle, low material utilization rate, and serious stress deformation in the current forging + machining method, and realizes the oxygen-reinforced frame parts. Forming with high performance, small deformation and less allowance.

Description

technical field [0001] The invention relates to an overall manufacturing method of an oxygen-reinforced frame, which belongs to the field of mechanical processing. Background technique [0002] As an important part of the propellant supply system of the liquid rocket engine, the common-bottom tank has been successfully applied in the flight launch of many types of Long March series rockets and weapons. According to the development requirements of a new generation of liquid rocket engine with high thrust, short cycle and low cost, the design structure of the common bottom tank is characterized by large size, complexity, thin wall and light weight, and the oxygen reinforced frame part is used as the common bottom tank device. The main load-bearing component of the tank is a large-scale, thin-walled ring structure, which has high requirements for mechanical properties, and plays a role in ensuring the strength, safety and stability of the thin-walled storage tank. [0003] At ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem of the present invention is: to overcome the shortcomings of the prior art, to prepare a TC4 titanium alloy large-scale thin-walled annular oxygen-reinforced frame by using laser melting deposition forming technology, and to realize the fast, high-performance, small-sized oxygen-reinforced frame member Deformation and small machining allowance forming provide a new method for the manufacture of large-scale thin-walled annular oxygen-reinforced frames

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