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Process and device for forming straight-edge conical cylinder forged piece of nuclear power evaporator

A nuclear power evaporator and conical cylinder technology, applied in the field of forging, can solve problems such as difficulty in forming forgings with straight edge conical cylinders, and achieve the effects of reducing research costs, machining allowances, and design time.

Active Publication Date: 2009-10-28
CHINA ERZHONG GRP DEYANG HEAVY IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a nuclear power evaporator with a straight-sided conical cylinder forging forming process and forming device. Quality of forgings

Method used

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  • Process and device for forming straight-edge conical cylinder forged piece of nuclear power evaporator
  • Process and device for forming straight-edge conical cylinder forged piece of nuclear power evaporator
  • Process and device for forming straight-edge conical cylinder forged piece of nuclear power evaporator

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Embodiment

[0060] The forged part in this embodiment is a pilot test forging of a certain type of nuclear power evaporator conical cylinder. The pressing speed of the upper anvil of the hydraulic press is about 20mm / s. The finite element simulation results of the hole reaming process are shown in Figure 4a -d, Figure 5 For the comparison between the formed forging (grid line part) and the processed part (contour line part), the inner diameter of the large end of the formed forging is 815mm, the outer diameter is 1000mm, the wall thickness is 185mm, the height is 1350mm, and the taper is 11.1°. It can be seen from the figure that the machining allowance of the entire forging is uniform, and the dimensions of each part meet the processing requirements of the part.

[0061] The results of the examples show that the present invention has designed a nuclear power evaporator band straight-edge conical cylinder forging forming process and forming device, and adopts finite element simulation...

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Abstract

The invention belongs to the field of forging, and particularly relates to a process and a device for forming a straight-edge conical cylinder forged piece of a nuclear power evaporator, which are applicable to the nuclear power and the process design and manufacturing process for the straight-edge conical cylinder forged piece of a hydrogenation reactor. The forming process comprises the following steps: (1) primary forming of a blank; (2) forming of a conical cylinder structure and a thin-wall conical cylinder structure with equal wall thickness; and (3) forming of the straight-edge conical cylinder forged piece of the nuclear power evaporator. The forming device is provided with a trestle, a saddle and a correcting twist block, wherein the saddle is placed on the trestle; the saddle is matched with an upper flat anvil outside the forged piece blank; and the correcting twist block is matched with the saddle. The operation of the process is simple and convenient, the structure of the device is simple, and the problem that the straight-edge conical cylinder forged piece is difficult to form and the like is solved. The straight-edge conical cylinder forged piece forged by the process has even processing allowance, and the size of each part can meet the requirement of components.

Description

technical field [0001] The invention belongs to the field of forging, and specifically relates to a forming process and a forming device for a nuclear power evaporator with a straight conical cylinder forging, which is suitable for the process design and manufacturing process of a nuclear power evaporator with a straight conical cylinder forging. 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 petrochemical industries. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/06B21J5/12
Inventor 孙嫘孙海燕张清华刘志颖刘晓光孙明月李世键陆善平李殿中李依依
Owner CHINA ERZHONG GRP DEYANG HEAVY IND
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