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Surface layer powder for precision casting and preparation method thereof

A technology of precision casting and surface layer, which is applied to casting molding equipment, casting molds, manufacturing tools, etc. It can solve the problems of high price of zircon powder and achieve the effects of low impurity content, good collapsibility and low cost

Pending Publication Date: 2022-07-29
阳泉中昂新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the current high price of zircon powder, it is very important to develop an alternative material with low cost and high fire resistance

Method used

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  • Surface layer powder for precision casting and preparation method thereof
  • Surface layer powder for precision casting and preparation method thereof

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preparation example Construction

[0056] On the other hand, the present invention relates to the preparation method of described surface layer powder for precision casting, comprising the following steps:

[0057] The mixture of bauxite clinker, andalusite, clay, white corundum and functional additives is subjected to primary homogenization treatment, moisture humidification treatment, thatch treatment, secondary homogenization treatment, drying treatment, calcination treatment and grinding. deal with.

[0058] The production process of the invention is simple, does not produce any tailings or waste residues, is environmentally friendly, has no processing costs for tailings in the later stage of zircon production, and has a lower comprehensive cost than zircon powder. The particle size distribution and particle size of the obtained powder can be adjusted through the mutual cooperation of the above-mentioned specific steps. Since in precision casting, the drying of the slurry is faster, the production efficien...

Embodiment 1

[0068] Surface layer powder for precision casting, including the following components in parts by mass:

[0069] 62 parts of bauxite clinker, 7.8 parts of andalusite, 7.5 parts of clay, 3.6 parts of white corundum and 11 parts of functional additives;

[0070] The functional auxiliary includes the following components by mass percentage: 50% of zirconia, 13% of aluminum oxide, 7% of magnesium oxide and 30% of silicon dioxide.

[0071] The preparation method of the surface layer powder for precision casting, comprising:

[0072] The bauxite clinker, andalusite, clay, white corundum and functional additives are respectively ground and processed, and the following particle size ranges are obtained by screening: the particle size of the bauxite clinker is 20-30 μm, and the andalusite The particle size of the clay is 25-35 μm, the particle size of the clay is 10-25 μm, the particle size of the white corundum is 30-45 μm, and the particle size of the functional additive is 25-45 μm...

Embodiment 2

[0075] A surface layer powder for precision casting, comprising 60 parts of bauxite clinker, 8 parts of andalusite, 6 parts of clay, 4.5 parts of white corundum and 7 parts of functional additives; the composition of the functional additives is the same as that of Example 1 ;

[0076] The preparation method of surface layer powder for precision casting is the same as that in Example 1.

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Abstract

The invention relates to the technical field of precision casting, in particular to surface layer powder for precision casting and a preparation method of the surface layer powder. The invention discloses surface layer powder for precision casting. The surface layer powder is prepared from the following raw materials in parts by mass: 50-65 parts of bauxite clinker, 5-10 parts of andalusite, 5-10 parts of clay, 1.5-5 parts of white corundum and 0.5-20 parts of a functional aid, the functional auxiliary agent comprises the following components in percentage by mass: 40%-60% of zirconium oxide, 10%-15% of aluminum oxide, 5%-10% of magnesium oxide and 25%-35% of silicon dioxide. According to the surface layer powder for precision casting disclosed by the invention, the surface layer powder for precision casting is higher in refractoriness, low in impurity content, good in collapsibility and stable in quality through coordination and cooperation of the raw material components such as the andalusite and the white corundum.

Description

technical field [0001] The invention relates to the technical field of precision casting, in particular to a surface layer powder for precision casting and a preparation method thereof. Background technique [0002] The main process of zircon powder currently on the market is to obtain zircon sand concentrate through elimination, gravity separation, magnetic separation and electrical separation of the original ore, and then grind the zircon sand concentrate into micron-sized powder. These powders will be used for the thick wall of large steel castings and the surface layer of various alloy steel castings. As a surface layer material, it has the effect of refining grains. It is a good shell-making material and is often used to prepare surface layer materials. Based on the current high price of zircon powder, it is very important to develop an alternative material with low cost and high refractory performance. [0003] In view of this, the present invention is proposed. SUM...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00B22C5/18
CPCB22C1/00B22C5/18
Inventor 不公告发明人
Owner 阳泉中昂新材料科技有限公司