Casting method of a hundred-ton integrated metal container for storage and transportation of spent fuel

A metal container and spent fuel technology, which is applied in casting molding equipment, metal processing equipment, casting molds, etc., can solve the problems of difficult elimination of slag inclusions on the surface and difficulty in meeting flaw detection standards, so as to improve self-feeding capacity and reduce shrinkage porosity , Reduce the effect of shrinkage cavity shrinkage

Active Publication Date: 2021-07-06
山东国创精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the slag inclusion on the surface, due to the quality problems of raw materials such as pig iron and the limitation of smelting technology, it is not easy to eliminate the slag inclusion on the surface when producing large cylinder containers, and it is difficult to meet the corresponding flaw detection standards

Method used

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  • Casting method of a hundred-ton integrated metal container for storage and transportation of spent fuel

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 A molding process method of a metal container for integrated spent fuel storage and transportation of 100 tons. The material of the metal container for integrated spent fuel storage and transportation is EN-GJS-400-18-LT.

[0033] It is casted with ductile iron. The outer mold is composed of multiple parts and a cover mold. The large core is a sand skeleton with chilled iron embedded in the molding sand. The bottom molding sand is made of furan resin sand. After the molding is completed, it is compacted by micro-shock.

[0034] The pouring method adopts ladle pouring, and two ladles are used in total to pour the cast iron liquid into the sprue cup, and then enter the mold through the sprue, runner, and inner sprue.

[0035]Specifically, according to the requirements of the smelting process, the smelting ingredients are carried out, and the method of adding nodulizers, inoculants and inoculating with the flow is adopted; after the obtained molten cast iron is sp...

Embodiment 2

[0037] Example 2 A combined iron-sand mold for making a hundred-ton integrated metal container for storage and transportation of spent fuel

[0038] It consists of a metal mold 1, a large core 4 and a sand box 2. The metal mold includes an outer mold 12 and a cover mold. The metal mold is supported and fixed by the bottom box. The outer mold 12 adopts an iron mold, and the outer mold The material is cast iron, and the outer mold is divided into 6 sections to facilitate processing and save time. From bottom to top, they are 1#-6# modules, and white glue is applied to the joints of the iron molds to ensure its tightness.

[0039] The big ni core 4 adopts a sand structure, and the outer surface of the big ni core is a cold iron 41, and the cold iron 41 is embedded in the sand. The sand box 2 includes a bottom box and a sprue sand box 21. The gating system is formed by the bottom box and the sprue sand box 21. Both of them adopt a sand structure. The sprue sand box 21 is a sprue,...

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Abstract

The present invention relates to the technical field of integrated metal containers for storage and transportation of spent fuel, in particular to a molding process method for metal containers for integrated storage and transportation of 100-ton spent fuel and combined casting molds for iron sand, especially for integrated storage and transportation of 100-ton spent fuel The casting method of the metal container and the used iron-sand combined casting mold. The iron mold is made of nodular cast iron. The outer mold is composed of multiple parts and a cover mold. The large core is a sand skeleton and chilled iron. The chilled iron is embedded in the molding sand. The bottom molding sand is made of furan resin sand. Casting, this process has formulated special process parameters and process methods, using the pouring system and filtration system to separate the primary oxidation slag in the cast iron liquid, and reduce the chemical reaction between the cast iron liquid, air and the mold, reduce the secondary oxidation slag, and make the casting During the solidification process, the graphitization expansion fully offsets the liquid shrinkage and solidification shrinkage, and eliminates shrinkage cavities and shrinkage porosity.

Description

technical field [0001] The present invention relates to the technical field of integrated metal containers for storage and transportation of spent fuel, in particular to a molding process method for integrated metal containers for storage and transportation of 100-ton spent fuel and an iron-sand combined casting mold, especially a storage and transportation of 100-ton spent fuel A casting method for an integrated metal container. Background technique [0002] At present, the spent fuel of domestic nuclear power plants is generally temporarily stored in the reactor storage pool. With the increase of operating time and refueling times, the storage capacity of the storage pool is becoming saturated, and it is no longer possible to store more spent fuel. There is an urgent need to use spent fuel storage The transport container transports the spent fuel cooled to a certain number of years to the final disposal site, so the domestic demand for large spent fuel storage and transpor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/06B22C9/08B22C9/24B22D15/00
CPCB22C9/068B22C9/082B22C9/086B22C9/24B22D15/00
Inventor 樊青峰王建宏汉斯·乌里希·明科勒
Owner 山东国创精密机械有限公司
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