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Preparation method of anti-vibration strip assembly of steam generator

A technology of steam generator and anti-vibration strip, applied in nuclear power plants, nuclear engineering, detailed information of nuclear power plants, etc., can solve the problems of increasing the danger of maintenance personnel being exposed to radioactive radiation, waste of manpower, financial resources and incidents, etc., to improve processing Process performance, automation, the effect of increasing the rolling speed

Active Publication Date: 2016-10-05
丹阳市龙鑫合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the heat transfer tube is damaged by vibration, the steam generator has to be replaced, which will inevitably cause a huge waste of manpower, financial resources and incidents, and also increase the risk of radioactive radiation for maintenance personnel

Method used

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  • Preparation method of anti-vibration strip assembly of steam generator
  • Preparation method of anti-vibration strip assembly of steam generator
  • Preparation method of anti-vibration strip assembly of steam generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as figure 1 , the anti-vibration bar assembly of the AP1000 unit steam generator in this embodiment, which includes: an anti-vibration bar 1 with a V-shaped structure and two end caps 2 fixedly sleeved on both ends of the anti-vibration bar.

[0060] The anti-vibration bar 1 is made of 405 stainless steel (SA-479 TYPE405); the end cap 2 is made of 690 nickel-based alloy (SB-166 UNS N06690).

[0061] The center of the end cap 2 and four places on the anti-vibration bar 1 adjacent to the two ends of the end cap are crushed. The two flattened places at the ends of the end caps on the anti-vibration strip 1 are distributed symmetrically.

[0062] The preparation method of the above-mentioned anti-vibration bar assembly includes: preparation of anti-vibration bar bar, preparation of end cap, bending and forming of anti-vibration bar bar, end cap assembly, upsetting, inspection, cleaning and packaging.

[0063] The anti-vibration bar is bent and formed: the anti-vibrat...

Embodiment 2

[0069]The preparation method of the anti-vibration bar in the above-mentioned embodiment 1 includes the following steps in sequence: induction furnace smelting, smelting analysis, forging, hot rolling, first heat treatment, performance test (tensile, hardness) and metallographic inspection, product Analysis, cold drawing, second heat treatment, finished product processing, performance testing (tensile, hardness) and grain size inspection, dimensional inspection, marking, cleaning.

[0070] The induction furnace smelting: when the alloy material is smelted, a nickel plate, pure iron, and metal chromium are placed at the bottom of the induction furnace, and they are mixed and packed densely. After melting 70%, 2% of the total weight of the slag is added to carry out steelmaking. After the molten steel temperature reaches the tapping temperature, pour the molten steel into the ladle, calm down for 1-2 minutes, and pour it into steel ingots and bars. The weight of each ingot is 40...

Embodiment 3

[0117] The preparation method of the end cap in the above-mentioned embodiment 1 includes the following steps in sequence: induction furnace smelting, electroslag refining, smelting analysis, forging, ultrasonic inspection, hot rolling, heat treatment, performance test, product analysis, end cap car processing, size Inspect, mark, clean.

[0118] The induction furnace smelting: when the alloy material is smelted, a nickel plate, pure iron, and metal chromium are placed at the bottom of the induction furnace, and they are mixed and compacted. After melting 70%, 2% of the total slag is added for steelmaking, and the measured After the temperature of the molten steel reaches the tapping temperature, pour the molten steel into the ladle, calm down for 1-2 minutes, and pour it into steel ingots and bars. The weight of each ingot is 40-50kg.

[0119] The electroslag refining: After the alloy material is smelted, electroslag refining is required to effectively improve the purity and ...

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Abstract

The invention discloses a manufacturing method for a vibration-proof strip assembly of a vapor generator. The vibration-proof strip assembly comprises a vibration-proof strip of a V-shaped structure and two end caps arranged at the two ends of the vibration-proof strip respectively, the vibration-proof strip is made of 405 stainless steel materials, and the end caps are made of 690 nickel base alloy materials. The manufacturing method for the vibration-proof strip assembly comprises the steps of vibration-proof strip manufacturing, end cap manufacturing, bending and forming, end cap assembling, upsetting pressing, examining, cleaning and packaging. The vibration-proof strip assembly of the AP 1000 unit vapor generator is simple in structure, the quality of the vibration-proof strip assembly meets the precision requirement for the vibration-proof strip of the vapor generator in a nuclear power station, and the vibration-proof strip assembly is safer to use. According to the manufacturing method for the vibration-proof strip assembly of the vapor generator, the manufacturing procedures are strict, the technological requirement for the vibration-proof strip of the vapor generator in the nuclear power station is met, the quality is ensured, and safety is improved.

Description

[0001] This application is a divisional application, the application number of the original application is: 201210297066.2, the application date: 2012-8-20, and the name of the invention is "Anti-vibration strip assembly for steam generator of AP1000 nuclear power unit". technical field [0002] The invention relates to a preparation method of an anti-vibration bar assembly of a steam generator of an AP1000 nuclear power unit. Background technique [0003] The U-shaped heat transfer tube in a nuclear power plant is the most critical and weakest link in the pressure boundary of the primary circuit system. Once the heat transfer tube is damaged by vibration, the steam generator must be replaced, which will inevitably cause a huge waste of manpower, financial resources and incidents, and also increase the risk of radioactive radiation for maintenance personnel. Therefore, solving the steam generator tube failure accident is a key issue related to the safety of the nuclear power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00G21D1/00
Inventor 王国年姜建东束志华张勋
Owner 丹阳市龙鑫合金有限公司