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Cobalt aluminate coating, preparation method of cobalt aluminate coating, and ceramic core manufacturing method

A technology of ceramic core and manufacturing method, applied in the direction of polyether coating, coating, etc., to achieve the effect of refining grains, refining grains, and improving comprehensive performance

Active Publication Date: 2018-08-31
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the manufacturing of turbine blades for gas turbines focuses on equiaxed crystals, columnar crystals, and single crystals, but the application of equiaxed crystals is still the mainstream

Method used

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  • Cobalt aluminate coating, preparation method of cobalt aluminate coating, and ceramic core manufacturing method
  • Cobalt aluminate coating, preparation method of cobalt aluminate coating, and ceramic core manufacturing method

Examples

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Embodiment 1

[0033] A kind of cobalt aluminate paint of the present invention, comprises the component of following percentage by weight: 20% cobalt aluminate, 15% polyethylene glycol, 40% deionized water, 10% ammonium dihydrogen phosphate, 14.5% Aluminum oxide, 0.5% defoamer.

Embodiment 2

[0035] A kind of cobalt aluminate coating of the present invention, comprises the component of following percentage by weight: 40% cobalt aluminate, 20% polyethylene glycol, 30% deionized water, 9% ammonium dihydrogen phosphate, 0% Aluminum oxide, 1% defoamer.

Embodiment 3

[0037] A cobalt aluminate coating of the present invention comprises the following components in weight percentage: 25% cobalt aluminate, 17% polyethylene glycol, 33% deionized water, 5% ammonium dihydrogen phosphate, 19.5% Aluminum oxide, 0.5% defoamer.

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Abstract

The invention discloses a cobalt aluminate coating, which comprises the following components in weight percentage: 20-40% cobalt aluminate, 15-20% polyethylene glycol, 30-40% deionized water, 5-10% ammonium dihydrogen phosphate, 0‑20% alumina, 0.5‑1% defoamer. It refines and refines the surface grains of castings. Also disclosed are a method for preparing the cobalt aluminate paint and a method for manufacturing a ceramic core.

Description

technical field [0001] The invention relates to the precision casting technology of superalloy components, in particular to cobalt aluminate paint, a preparation method of the cobalt aluminate paint and a ceramic core manufacturing method. Background technique [0002] At present, the manufacturing of turbine blades for gas turbines focuses on equiaxed crystals, columnar crystals, and single crystals, but the application of equiaxed crystals is still the mainstream. The manufacture of equiaxed grain turbine blades is mainly concentrated on fine-grain casting, and the smaller the grain size, the better. The surface grain refinement technology of castings is also quite mature. For iron-based alloys, the industry widely adopts the casting mold surface to brush aluminum method of acid cobalt paint. However, the refinement of the internal grains of the casting is equally important to the improvement of the quality of the casting, and the refinement of the internal grains of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D171/02C09D7/61C04B41/85
CPCC04B41/5032C04B41/85C08K3/22C08K3/24C08K3/32C08K2003/2227C08K2003/322C09D7/61C09D171/00C04B41/5031C04B41/5015C04B41/488C04B41/4535
Inventor 赵代银曾洪杨功显杨照宏张松泉何建伍林
Owner DONGFANG TURBINE CO LTD