Printing material for ceramic core, preparation method of printing material and preparation method of ceramic core

A technology for ceramic cores and printing materials, applied in cores, casting molding equipment, casting molds, etc., can solve the problem of high requirements for printing materials, and achieve the effects of good surface quality, good fluidity, and high dimensional accuracy

Active Publication Date: 2019-01-25
NINGXIA KOCEL MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although 3DP technology can realize 3D printing, this technology has relatively high requirements for printing materials. At present, there is still a lack of printing materials for ceramic cores that can be applied to 3DP technology in the market.

Method used

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  • Printing material for ceramic core, preparation method of printing material and preparation method of ceramic core
  • Printing material for ceramic core, preparation method of printing material and preparation method of ceramic core

Examples

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preparation example Construction

[0043] In a second aspect, the present invention provides a method for preparing a printing material for a ceramic core, comprising the following steps:

[0044] A) Granulating the mixture of refractory aggregate and reinforcing agent to obtain powder I;

[0045] B) Mix hardener and dispersant to obtain powder II;

[0046] C) Mixing powder I and powder II and sieving to obtain the molded powder.

[0047] In the preparation method provided by the present invention, the refractory aggregate and the reinforcing agent are first mixed and granulated to obtain powder I, the hardener and the dispersant are mixed to obtain powder II, and then the obtained powder I and powder II are mixed to obtain Formed powder. In the preparation method, the refractory aggregate and the reinforcing agent are mixed first, and the two are fully contacted to obtain a powder with good fire resistance and high compressive strength. It is then mixed with hardeners and dispersants to improve the printabi...

Embodiment 1

[0058] This embodiment is a printing material for a ceramic core, including a molding powder and a liquid binder; wherein, in parts by weight, the molding powder includes 89.24 parts of mullite powder, 7.76 parts of aluminum dihydrogen phosphate powder, 1.5 parts of magnesium and 1.5 parts of fumed silicon dioxide; the liquid binder includes 82.74 parts of aluminum dihydrogen phosphate liquid, 15.76 parts of phosphoric acid solution with a mass fraction of 15% and 1.5 parts of sodium dodecylbenzenesulfonate.

[0059] Wherein, in the aluminum dihydrogen phosphate liquid, the mass content of phosphorus pentoxide is 35%, and the mass content of aluminum oxide is 10%.

[0060] The preparation method of the printing material for the ceramic core in this embodiment includes the following steps:

[0061] A) Evenly mix mullite powder, aluminum dihydrogen phosphate powder and 50 parts of distilled water, stir to obtain a slurry, and use a spray granulator to granulate to obtain a powde...

Embodiment 2

[0069] This embodiment is a printing material for a ceramic core, including a molding powder and a liquid binder; wherein, in parts by weight, the molding powder includes 90 parts of mullite powder, 5 parts of aluminum dihydrogen phosphate powder, 2.5 parts of magnesium and 2.5 parts of fumed silicon dioxide; the liquid binder includes 88 parts of aluminum dihydrogen phosphate liquid, 10 parts of phosphoric acid solution with a mass fraction of 15% and 2 parts of sodium dodecylbenzenesulfonate.

[0070] Wherein, in the aluminum dihydrogen phosphate liquid, the mass content of phosphorus pentoxide is 35%, and the mass content of aluminum oxide is 10%.

[0071] The preparation method of the printing material for the ceramic core in this embodiment is the same as the preparation method of the printing material for the ceramic core provided in Example 1.

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Abstract

The invention provides a printing material for a ceramic core, a preparation method of the printing material and a preparation method of the ceramic core, and relates to the technical field of three-dimensional printing rapid formation. The printing material for the ceramic core includes molding powder; the molding powder is prepared from the following materials in parts by weight: 85 to 93.5 parts of refractory aggregate, 4.5 to 10 parts of a reinforcing agent, 1 to 2.5 parts of a hardener, and 1 to 2.5 parts of a dispersing agent. The use of the printing material for the ceramic core can alleviate the technical problem that an existing ceramic core needs to use a mold to cause easy waste of the mold during a preparation process, and the printing material for the ceramic core is lacked in3DP technique in the prior art, thus achieving the aims of reducing cost and realizing quick printing.

Description

technical field [0001] The invention relates to the technical field of three-dimensional printing rapid prototyping, in particular to a printing material for a ceramic core, a preparation method thereof, and a preparation method of the ceramic core. Background technique [0002] Ceramic mold casting is a new process developed on the basis of sand casting and investment casting. It is one of the main methods of precision casting and is widely used in precision casting production. At present, the main method of making ceramic cores used in ceramic mold casting is to use the hydrolyzed solution of ethyl silicate as a binder, and after making slurry with refractory materials, use the mold to pass through grouting, cementation, mold removal, and roasting. And other craft firing. The production method includes the design and production of the mould. Since a mold can only produce a ceramic core with a specific structure, it is necessary to make a special mold when making a special...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/02B22C1/18B22C9/10B33Y70/00
CPCB22C1/02B22C1/185B22C9/10B33Y70/00
Inventor 张景豫郭永斌
Owner NINGXIA KOCEL MOLD
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