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Casting method of S-channel depleted uranium shielding body

A technology for shielding and depleted uranium, which is applied in metal material coating process, fusion spraying, coating, etc., can solve the problems of high brittleness, high hardness, and easy generation of holes

Inactive Publication Date: 2017-07-07
CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The material prepared by the powder metallurgy method is easy to produce holes inside, and at the same time has the properties of some ceramics, high hardness and high brittleness, so it is not suitable for mechanical processing

Method used

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  • Casting method of S-channel depleted uranium shielding body
  • Casting method of S-channel depleted uranium shielding body
  • Casting method of S-channel depleted uranium shielding body

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] like figure 1 As shown, the S channel is wrapped with a certain thickness of depleted uranium metal outside the S-shaped stainless steel tube. The casting method used is to inject the depleted uranium metal liquid into the graphite mold, and at the same time, wrap the S-shaped stainless steel tube put in the mold before solidification. During this process, it is necessary to ensure that the shape of the S-shaped stainless steel tube does not change, and the position in the mold does not change. After solidification, a complete S-shaped cavity is formed inside the product, and the cavity can pass through steel balls with a diameter of Φ9.5 without hindrance. There are no casting defects such as shrinkage cavity and porosity inside the casting, which can achieve the purpose of completely shielding the radioactive source. The S-channel ...

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Abstract

The invention is applied to the technical field of the industrial flaw detection industry and the radiological medicine industry, and particularly relates to a casting method of an S-channel depleted uranium shielding body. The casting method comprises the following steps: an S-shaped stainless steel tube is coated with a zirconium oxide and yttrium oxide coating by adopting a plasma spraying technology; a cold uranium sleeve is additionally arranged at the exterior of the S-shaped stainless steel tube provided with the zirconium oxide and yttrium oxide coating; depleted uranium molten metal flows down along a runner exactly above a mould for casting, wherein a casting mode adopts transverse casting, the middle of an inner cavity of the mould is spherical and the two ends of the inner cavity of the mould are rectangular; after the previous treatment is carried out on the S-shaped stainless steel tube, primary casting is carried out, a core having a small size is formed, and then the core is subjected to secondary casting. The S-channel depleted uranium shielding body cast by the casting method is used for nondestructive flaw detection equipment.

Description

technical field [0001] The invention is applied to the technical fields of industrial flaw detection and radiation medical industry, and specifically relates to a method for casting an S-channel depleted uranium shielding body. Background technique [0002] At present, in the gamma ray shield market, there are mainly lead shields, tungsten shields and depleted uranium shields. During use, the melting point of lead is low (327.4°C), and lead will melt in case of fire or some special circumstances, causing damage to the lead shielding body and endangering personal safety; at the same time, lead is soft and low in strength, only 13MPa. The prepared shield is easily deformed during transportation and installation, and is not suitable for precision assembly. Tungsten has a high melting point (3410±20°C), and large-sized tungsten shields can only be prepared by powder metallurgy. The material prepared by the powder metallurgy method is easy to produce holes inside, and at the sa...

Claims

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Application Information

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IPC IPC(8): B22D19/08C23C4/134C23C4/11
CPCB22D19/08
Inventor 王玉岭田春雨张伟邹本慧王玉敏康泰峰郭洪齐向前王兆松赵云峰裴海彬
Owner CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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