Fluid mechanical part resistant to slurry erosiveness and fluid machinery having same

A fluid machinery and component technology, which is applied to the components, mechanical equipment, machines/engines, etc. of the pumping device for elastic fluids, and can solve the problem that the corrosion resistance of the slurry is lower than that of the base metal.

Inactive Publication Date: 2008-01-02
EBARA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since these polymer-based lining materials can be constructed at room temperature or at a low temperature below 200°C, they have the advantage of not easily causing deterioration or deformation of the base material, but they are resistant to slurry erosion (compared to slurry containing solid particles in a certain proportion). The erosion and wear resistance of the material fluid) is mostly lower than that of the base material

Method used

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  • Fluid mechanical part resistant to slurry erosiveness and fluid machinery having same
  • Fluid mechanical part resistant to slurry erosiveness and fluid machinery having same
  • Fluid mechanical part resistant to slurry erosiveness and fluid machinery having same

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Embodiment

[0043] Examples for demonstrating the effects of the present invention will be described below, but the present invention is not limited to the embodiments of the examples.

[0044] The immersion test method of the lining material is as described above, according to the immersion test of the lining material at a uniform temperature described in "Corrosion Resistance of Plastics and Its Test and Evaluation" (Author: Okuda Satoshi, Publisher: Nikkan Kogyo Shimbun) method. The test piece was installed in the stainless steel container shown in FIG. 1, it was brought into contact with the water in the container, and this container was kept in the constant temperature bath of 25 degreeC. Observe at predetermined intervals, and continue the test until the lining material expands, cracks, etc., and the base metal corrodes significantly, so that it is confirmed that it cannot be used. The diffusion coefficient was calculated according to the formula described above.

[0045] Determin...

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Abstract

The present invention provides a fluid machinery component exerted with carbamide resin lining and the fluid machinery provided with the component, and the slurry erosion resistance of the fluid machinery component exceeds the base metal, the construction can be executed near the ordinary temperature and it will not accompany with the deterioration or deformation of the base metal. The fluid machinery is the fluid machinery which comprises a surface that at least contacts with the fluid is composed of steel, steel plate, cast iron or cast steel, and it is characterized in that the fluid contact surface is exerted with a carbamide resin lining.

Description

technical field [0001] The present invention relates to slurry erosion-resistant fluid machinery components, and more specifically, to components used in fluid machinery such as pumps and water turbines, which are suitable for surface treatment of slurry erosion problems caused by slurry erosion of objects. A treated slurry erosion-resistant coating, a fluid machine component to which such a coating is applied, and a fluid machine having the component. Background technique [0002] In fluid machines such as pumps and water turbines that process liquids such as water containing granular sediment, for rotating components such as impellers or runners that work in the fluid, or components that form the flow path of the fluid, in order to prevent the surface that comes into contact with the fluid wear, it is necessary to use materials with excellent slurry erosion resistance. However, such a material excellent in slurry erosion resistance is not only expensive, but also has anot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F15/00F04D29/02F04D29/22F04D29/24F04D29/44F03B3/12
CPCY02E10/226Y02E10/223Y02E10/20
Inventor 小川俊之长坂浩志浅野保夫杉山宪一
Owner EBARA CORP
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