Surface treatment method of beryllium material for nuclear reactor and beryllium material for nuclear reactor

Abstract

The invention discloses a surface treatment method of a beryllium material for a nuclear reactor. The surface treatment method comprises the following steps that 1, surface finishment treatment is carried out on the beryllium material for the nuclear reactor; 2, in an air circulating environment, oil removal treatment is carried out on the beryllium material for the nuclear reactor subjected to the surface finishment treatment by adopting an organic solution; 3, after weakly acidic oxygen-containing acid, chromium trioxide and hydrofluoric acid are mixed, and glycerol is added to prepare a chemical treatment liquid; and 4, after the beryllium material which is subjected to the deoiling treatment is soaked in the chemical treatment liquid, stirring is conducted until the beryllium materialfor the nuclear reactor floats on the surface of the chemical treatment liquid, the beryllium material is taken out, and the surface chemical treatment liquid cleaning is conducted. The invention further discloses the beryllium material for the nuclear reactor. The beryllium material for the nuclear reactor treated by the method is bright in surface and uniform in density, can form a frosted surface, and capable of conveniently conduct product welding.

Description

technical field [0001] The invention belongs to the technical field of beryllium material treatment, and in particular relates to a surface treatment method of beryllium material for nuclear reactors and the beryllium material for reactors. Background technique [0002] Beryllium and its alloys are widely used as new aviation products due to their excellent physical properties. Due to special environments such as the atmosphere and ocean, the surface of some beryllium products needs to be welded with other metals. Based on the current situation of enterprise aviation product research and development, in order to improve the welding quality and Surface properties, experimental research on surface chemical treatment of beryllium materials, has very practical significance. [0003] At present, beryllium products are treated with acid liquid surface during product processing to simply eliminate internal stress and remove surface impurities. The products treated by this method ha...

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Problems solved by technology

[0003] At present, beryllium products are treated with acid liquid surface during product processing to simply eliminate internal stress and remove surface impurities. The products treated by this method have no metallic luster, are dull, or have very good brightness, but there is no formation on the surface. On the frosted surface, the formed film is dense and smooth, which affects the welding quality of the product in the later stage, and is easy to corrode the surface of the beryllium material, forming pits or pits, which cannot meet the needs of new aviation products.