Hollow blade ceramic core material, preparation method thereof and method for manufacturing hollow blade ceramic core by using material

A technology of ceramic cores and hollow blades, which is applied in cores, casting molding equipment, casting molds, etc., can solve the problem that the high temperature resistance of pure silica ceramic cores is not as good as it is difficult to meet the requirements of pure silica ceramic cores. Alumina ceramic cores are difficult to remove, so as to optimize the ease of removing cores, optimize the effect of alkali boiling and remove cores, and improve environmental conditions

Inactive Publication Date: 2020-01-31
康硕(德阳)智能制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is relatively easy to remove cores from pure silica ceramic cores, but it is relatively difficult to remove cores from pure alumina ceramic cores. Taking turbine blades as an example, the core removal time of pure silica ceramic cores is usually about 2 days, while that of pure alumina ceramic cores Core removal is very difficult
However, the high temperature re

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0032] The present invention will be described in detail below with an implementation example.

[0033] 1. Prepare materials according to the following mass ratio components

[0034] Acrylic monomer 75 parts

[0035] Sodium polyacrylate 3 parts

[0036] Polyether modified polydimethylsiloxane 16 parts

[0037] Benzoin dimethyl ether 16 parts

[0038] Particle size 6μm to 10μm silicon oxide 92 parts

[0039] Zircon with a particle size of 6 μm to 10 μm 8 parts

[0040] Concentration of 1.5% dilute hydrochloric acid pH regulator appropriate amount.

[0041] Two, prepare the hollow blade ceramic core material according to the following steps:

[0042] 1) Mix acrylic acid monomer, sodium polyacrylate, polyether-modified polydimethylsiloxane, and benzoin dimethyl ether, mix well, and slowly drop dilute hydrochloric acid with a concentration of 1.5% during the stirring process to adjust the pH value To 7, make a premix;

[0043] 2) Mix silica and zircon powders and stir even...

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Abstract

The invention discloses a 3D printed hollow blade ceramic core material, a preparation method thereof and a method for manufacturing a hollow blade ceramic core by using the material. The preparationmethod is characterized in that modifier zirconite is added into a traditional 3D printing pure silicon oxide ceramic formula; therefore, the high-temperature performance of the 3D printing silicon oxide ceramic product is obviously improved; the average high-temperature bending strength is improved from 6.72 Mpa of pure silicon oxide to 24.76 Mpa after heat preservation is conducted for 30 min atthe temperature of 1340 DEG C, the soda boiling core removal effect of the hollow blade ceramic core made of the material is further optimized, and the soda boiling core removal time of a turbine blade is shortened from about 30 days to 2 days.

Description

technical field [0001] The invention belongs to the technical field of precision casting and relates to a precision casting mold, in particular to a hollow vane ceramic core material, a preparation method thereof and a method for making a hollow vane ceramic core with the material. Background technique [0002] For the cooling structure of new turbine blades, the development trend is hollow blades with double-walled cooling structures. The feature of this cooling blade structure is that there are a large number of small cold air passages in the double wall, which creates a large heat exchange area inside the blade, thereby improving the cooling effect. For the preparation of this kind of hollow blade with double-wall cooling structure, the key is to prepare a ceramic core that meets its requirements. The traditional method of processing ceramic cores is hot press injection molding. The traditional hot press molding process first needs to open a mold. The mold cycle is 2 to ...

Claims

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Application Information

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IPC IPC(8): C04B35/14C04B35/622C04B35/626B22C9/10B22C9/24B22C1/00B22C1/02B33Y10/00B33Y70/10
CPCB22C1/00B22C1/02B22C9/10B22C9/24B33Y10/00B33Y70/00C04B35/14C04B35/622C04B35/62605C04B2235/3248C04B2235/5436C04B2235/96
Inventor 张硕段戈扬刘江博闻樊一扬
Owner 康硕(德阳)智能制造有限公司
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