CAP 1400 main steam pipe penetration assembly electric smelting forming method

A technology for main steam pipes and penetrating parts, which is applied in the field of electrofusion forming of CAP1400 main steam pipe penetrating parts, which can solve the problems of low utilization rate of forgings and large amount of machining, and achieve the effects of improving efficiency, saving costs and simplifying processing procedures

Inactive Publication Date: 2017-01-04
NANFANG ADDITIVE MFG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process pipe of the main steam penetration part is hollow inside (inner diameter = 956.8), and needs to be hollowed out by machining, which has the disadvantages of large amount of machining and low utilization rate of forgings.

Method used

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  • CAP 1400 main steam pipe penetration assembly electric smelting forming method
  • CAP 1400 main steam pipe penetration assembly electric smelting forming method
  • CAP 1400 main steam pipe penetration assembly electric smelting forming method

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described below with reference to the accompanying drawings. Figure 1A It is a schematic diagram for illustrating the principle of the electrofusion method in a specific embodiment; Figure 1B for Figure 1A Partial enlarged view near the location shown in A. Since it is a schematic diagram, the components in the diagram are schematic, and their actual shapes and dimensions are not limited by the diagram.

[0018] In this forming method, the raw material wire 1 is melted and deposited layer by layer (shown in FIG. 1 as the state of accumulation up to the Nth layer) on the base material 2, thereby finally forming the desired metal member.

[0019] The specific implementation process is:

[0020] A. The wire feeding mechanism 5 sends the raw material wire 1 to the surface of the base material 2 placed on the workbench 21 , which is covered with the granular auxiliary materials conveyed by the powder feeding mechanis...

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Abstract

The invention discloses a CAP 1400 main steam pipe penetration assembly electric smelting forming method. Through a heating source of high energy which comprises arc heat, resistance heat and electro slag heat, metal wires transported continuously are smelted, the smelted product is solidified and accumulated layer by layer on a base material to be made into shaped metal components; according to layered section data of the shaped components and through relative movement between an electric smelting head controlled by a computer and the base material, a molten pool is fast cooled, and solidified and accumulated layer by layer on the base material, and the CAP 1400 main steam pipe penetration assembly are formed finally. The CAP 1400 main steam pipe penetration assembly has the advantages of high efficiency, low cost, good mechanical property and the like.

Description

technical field [0001] The invention relates to an electrofusion forming method for a penetrating part of a CAP1400 main steam pipe. Background technique [0002] The main steam pipe penetration of nuclear power runs through the inside and outside of the CV (steel containment vessel). It is a key component to ensure that the cooling water of the secondary circuit is evaporated into steam after heat exchange with the high-pressure water of the primary circuit to drive the steam turbine to do work to achieve power generation. It is the key component for connecting the nuclear island and the conventional island. The key components of the nuclear power plant are subject to harsh working environment and safety requirements. Therefore, the research and development and preparation of pipeline materials has always been one of the major research projects for nuclear power main equipment materials. The CAP1400 unit independently developed by my country based on the AP1000 puts forward...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02
CPCB23K28/02
Inventor 刘栋汤海波余征张国春
Owner NANFANG ADDITIVE MFG TECH
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