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Production method of a coating layer for a piece of turbomachinery component, the component itself and the corresponding piece of machinery

A technology for turbines and turbine impellers, applied in coatings, mechanical equipment, machines/engines, etc., can solve problems such as limiting manufacturing costs, and achieve the effect of reducing weight, uniform thickness, and improving productivity

Inactive Publication Date: 2011-01-26
NUOVO PIGNONE SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] Another difficulty is that the coating of centrifugal impellers usually has to be "machinable" with the greatest ease and smoothness, in order to limit manufacturing costs

Method used

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  • Production method of a coating layer for a piece of turbomachinery component, the component itself and the corresponding piece of machinery
  • Production method of a coating layer for a piece of turbomachinery component, the component itself and the corresponding piece of machinery
  • Production method of a coating layer for a piece of turbomachinery component, the component itself and the corresponding piece of machinery

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Embodiment Construction

[0057] In the drawings, (wherein the same numerals correspond to the same parts), as indicated by the present invention (see figure 1 ), the coating 1 is applied by electroless nickel plating on the treated surface 3S of the centrifugal impeller 3, which is made of a light alloy.

[0058] The impellers can be of various types such as centripetal, mixed flow or others. figure 2 Represents a partial cross-section of the centrifugal impeller 3 of a centrifugal compressor, not drawn to scale. The surface of the impeller 3 is coated with the above-mentioned coating 1 according to the present invention and mounted on the shaft 5; please note that the surface 3S of the impeller 3 includes both The outer surface also includes the inner surface (inner channel), but does not include the hole 3F for mounting on the shaft 5 . In particular, the impeller 3 in the figure is a three-dimensional closed impeller. Obviously, the impeller can be of any other type, for example, an open three-d...

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Abstract

A method to produce a turbomachinery impeller, which includes, at least, the following steps: creation of the impeller using a light alloy, and coating of the impeller with a nickel-plating coating.

Description

technical field [0001] The invention relates to a method for preparing a coating of a turbomachine component. The invention also relates to the component itself and to the turbomachine part to which it is mounted. Background technique [0002] The turbine wheel is a critical component of the turbine since it interacts with the process fluid and is subjected to continuous mechanical, chemical and thermal stress. [0003] These components are usually fabricated from "heavy" alloys, resulting in a high degree of durability during operation. [0004] "Heavy" alloys generally mean metal-based alloys where the metal has a high atomic number, such as iron, nickel, cobalt, etc. Stainless steel and generally all superalloys (based on nickel, cobalt or many other metals) are heavy alloys. [0005] Usually based on the specific use, the component or the material from which the component is made must be mechanically, thermally and / or chemically treated to improve its internal or surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36F04D29/02
CPCF04D29/023F04D29/284F05D2230/314F05D2300/12F05D2300/17Y10T29/49336
Inventor I·焦万内蒂R·保莱特M·詹诺兹E·焦尔尼A·阿万兹尼
Owner NUOVO PIGNONE SPA
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