Design method of middle blank and prefabricating blank during conical shell forgeable piece forming process

Abstract

The invention relates to a design method of a middle blank and a prefabricating blank during a nuclear power and hydrogenation reaction chamber conical shell forgeable piece forming process, which belongs to the filed of forging and is suitable for the production engineering and a manufacturing process of nuclear power and hydrogenation reaction chamber conical shell forgeable piece forming. The invention adopts a method of combining an analysis method and finite element modeling to develop a dimension relational expression of the prefabricating blank, the middle blank and a final forgeable piece during the nuclear power and hydrogenation reaction chamber conical shell forgeable piece forming process and provides the design method of the middle blank and the prefabricating blank. The design method and a design formula of the middle blank and the prefabricating blank during the nuclear power and hydrogenation reaction chamber conical shell forgeable piece forming process are suitable for producing significant parts, such as megawatt nuclear power conical shells, large-sized hydrogenation reaction chamber conical shells, and the like; when the middle blank and the prefabricating blank designed by the design method are adopted to produce conical shell forgeable pieces, the middle blank and the prefabricating blank designed by the design method can nicely control the conicity of the conical shell forgeable pieces, thereby solving the problem of the difficult forming and the unreliable machining dimension precision of traditional conical shell forgeable pieces.

Description

technical field [0001] The invention belongs to the field of forging, specifically a design method for an intermediate billet and a preform in the forming process of a conical cylinder forging of a nuclear power and hydrogenation reactor, which is suitable for forming a conical cylinder forging of a nuclear power and hydrogenation reactor Process design and manufacturing process. Background technique [0002] The conical cylinder is one of the most important parts of nuclear power evaporators and petrochemical hydrogenation reactors. Forgings often weigh more than 100 tons and have a diameter of more than 5 meters. Due to their special service environment, there are extremely high impacts on the structure and performance of forgings. It is very difficult to manufacture such forgings. At present, most of such forgings in my country rely on imports, and sometimes they cannot be bought even with money, which seriously restricts the development of my country's nuclear power and p...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a design method for the intermediate billet and preform in the forming process of the conical cylinder forgings of nuclear power and hydrogenation reactors, to solve the problems of difficult forming of the traditional conical cylinder forgings and the inability to guarantee the processing dimensional accuracy. The intermediate billet and preform designed by this method produce conical cylinder forgings, which can well control the taper of forgings, greatly reduce the machining allowance of conical cylinder forgings, reduce the difficulty of subsequent cold processing, and shorten the production cycle of products

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