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Gypsum for aviation alloy casting mold and preparation method of gypsum
The invention relates to gypsum for an aviation alloy casting mold and a preparation method of the gypsum, and belongs to the technical field of gypsum casting. The gypsum is prepared from the following raw materials in parts by weight: 15-25 parts of a gel material, 70-78 parts of a refractory material, 1-2 parts of a defoaming agent, 1-2 parts of an anti-cracking agent, 1-1.5 parts of a retarder, 7-11 parts of a flexibilizer and 4-5 parts of polypentabromobenzyl acrylate. The preparation method comprises the following steps: stirring the refractory material in mixing equipment for 5-10 minutes; adding the gel material to be mixed and stirred for 10-15 minutes; adding the defoaming agent and anti-cracking agent to be stirred for 5-10 minutes; and adding the polypentabromobenzyl acrylate and flexibilizer to be stirred for 10-15 minutes, and adding the retarder, and uniformly stirring to obtain a gypsum finished product. The gypsum for an aviation alloy casting mold is prepared by adopting a new raw material composition and proportion, and has the advantages of high strength, wide application range and high temperature resistance; and the preparation method is simple, is easy to operate, and is beneficial to industrial production.
Gypsum for aviation alloy casting mold and preparation method of gypsum
The invention relates to gypsum for an aviation alloy casting mold and a preparation method of the gypsum, and belongs to the technical field of gypsum casting. The gypsum is prepared from the following raw materials in parts by weight: 15-25 parts of a gel material, 70-78 parts of a refractory material, 1-2 parts of a defoaming agent, 1-2 parts of an anti-cracking agent, 1-1.5 parts of a retarder, 7-11 parts of a flexibilizer and 4-5 parts of polypentabromobenzyl acrylate. The preparation method comprises the following steps: stirring the refractory material in mixing equipment for 5-10 minutes; adding the gel material to be mixed and stirred for 10-15 minutes; adding the defoaming agent and anti-cracking agent to be stirred for 5-10 minutes; and adding the polypentabromobenzyl acrylate and flexibilizer to be stirred for 10-15 minutes, and adding the retarder, and uniformly stirring to obtain a gypsum finished product. The gypsum for an aviation alloy casting mold is prepared by adopting a new raw material composition and proportion, and has the advantages of high strength, wide application range and high temperature resistance; and the preparation method is simple, is easy to operate, and is beneficial to industrial production.
Gypsum for aviation alloy casting mold and preparation method of gypsum
SONG YUZHU (author) / GAO SHIHAO (author) / ZHAO JINCHAO (author)
2015-12-02
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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