A method for forming a casing for a combustion chamber

Abstract

The invention discloses a formation method for a machine case of a combustor. The formation method comprises the following steps: S1, initially drawing blanks to achieve initial formation of the blanks so as to carry out drawing and deformation in follow-up steps; S11, removing stress of the initially drawn blanks; and S2, secondarily drawing the blanks, and forming. According to the formation method, a two-grade drawing technology is adopted to reduce the difficulty at the technology for drawing at each time, and relatively lower drawing force is required for drawing each time, so that the requirements on processing equipment are reduced. With the adoption of the formation method, the circumstances of relatively high variation of the strength and hardness of metal materials can be effectively avoided, so relatively lower formation pressure is generated during forming the blanks by the formation method; and meanwhile, the operation of frequently annealing in the process can be saved, thereby reducing the complexity of a manufacture technology for the machine case of the combustor.

Description

technical field [0001] The invention relates to the technical field of combustion chamber equipment processing, and more specifically relates to a molding method of a casing for a combustion chamber. Background technique [0002] The combustion chamber is a device in which fuel or propellant is burned to generate high-temperature gas. It is an important part of gas turbine engines, ramjet engines, and rocket engines. Among the various components that make up the combustion chamber, the casing of the combustion chamber is one of the important components to ensure its high structural strength. [0003] In the prior art, the casings of the combustion chamber mostly adopt steel casing wall structures, and most of the casings of the combustion chambers are formed by welding and spinning methods. Compared with the one-piece forming method (for example, it is made by spinning method), the overall strength of the casing of the combustion chamber will be reduced when the welding met...

AI Technical Summary

Problems solved by technology

[0005] To sum up, in the prior art, the spinning process is used to form the combustion chamber casing, which will make the manufacturing process of the combustion chamber casing complicated (because multiple intermediate annealings are required), and the requirements for processing equipment are relatively high (The reason is that strong spinning is required)

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