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Novel compound crystal sand powder shell-making material and production technology thereof

A technology of shell material and production process, which is applied in the field of new polycrystalline sand powder shell material and its production process, can solve the problems of increasing the input cost of enterprises, inconvenient selection of overall shell raw materials, etc., so as to improve the pouring temperature, Effect of increasing relative mechanical strength and reducing production cost

Inactive Publication Date: 2018-08-03
ANHUI HUSN KEWAN SPECIAL CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Silica sol is a colloidal solution in which silica particles are evenly dispersed in water. It is an inorganic polymer binder with excellent performance. In precision casting, it is used as a binder for wax model shells. Hang slurry and sprinkle sand, and the sand layers are bonded together by silica sol and slurry to form a shell. The existing shell materials include quartz powder, quartz sand, corundum powder, mullite sand, zircon powder, Zircon sand, etc., but the applicable pouring temperature is not equal, and there is a certain pouring temperature difference between them, which is not convenient for the factory to grasp the selection of the overall shell-making raw materials, and there are certain differences in the storage requirements of each raw material, which will undoubtedly increase. Input costs for large companies

Method used

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Experimental program
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Effect test

Embodiment 1

[0016] A new shell material made of polycrystalline sand powder, including the following components: Al 2 o 3 ≥80%, SiO 2 ≤18%, Fe 2 o 3 ≤0.06%, formulation ≤0.1%.

[0017] Preferably, the formulation includes the following components: trimethylchlorosilane, graphite, antimony pentafluoride and fluorosulfonic acid.

[0018] Preferably, the ratio of the components in the formulation is 3-6:1-2:4-8, among trimethylchlorosilane, graphite, antimony pentafluoride and fluorosulfonic acid.

[0019] A manufacturing process of a novel polycrystalline sand powder shell material mainly includes the following steps:

[0020] (1) Al 2 o 3 , SiO 2 , Fe 2 o 3 Raw materials are ground into powder by a grinder;

[0021] (2) mixing the above-mentioned ground materials and melting at high temperature;

[0022] (3) Pour the formulation into the above-mentioned molten material, and make the material miscible evenly, and introduce the mixed-melt material into the plate mold to obtain a ...

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Abstract

The invention discloses a novel compound crystal sand powder shell-making material and a production technology thereof. The shell-making material comprises no less than 80% of Al2O3, no more than 18%of SiO2, no more than 0.06% of Fe2O3 and no more than 0.1% of preparation agents, and is applicable for all metal castings and alloy castings thereof, such as high manganese steel, low carbon stainless steel, high temperature alloy steel and titanium alloy, with the casting temperature of 1750 DEG C or below; the casting temperature can be increased effectively, and easy treatment and placement ofmaterials used in a factory are ensured; and the relative mechanical strength of the castings can be improved, and the production cost is reduced obviously.

Description

technical field [0001] The invention relates to the technical field of metal shell composite material and its processing, in particular to a novel polycrystalline sand powder shell material and its production process. Background technique [0002] Silica sol is a colloidal solution in which silica particles are evenly dispersed in water. It is an inorganic polymer binder with excellent performance. In precision casting, it is used as a binder for wax model shells. Hang slurry and sprinkle sand, and the sand layers are bonded together by silica sol and slurry to form a shell. The existing shell materials include quartz powder, quartz sand, corundum powder, mullite sand, zircon powder, Zircon sand, etc., but the applicable pouring temperature is not equal, and there is a certain pouring temperature difference between them, which is not convenient for the factory to grasp the selection of the overall shell-making raw materials, and there are certain differences in the storage r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00
CPCB22C1/00
Inventor 陈象青刘成铭沈雁宋连华周立明李勇叶世林徐爱民
Owner ANHUI HUSN KEWAN SPECIAL CASTING
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