Nano diatomite containing modified furan resin sand for steel casting and preparation method for nano diatomite containing modified furan resin sand

A nano-diatomite and furan resin technology, applied in casting molding equipment, casting molds, manufacturing tools, etc., can solve the problems of high porosity of castings, easy thermal cracking of castings, and high formaldehyde residues, achieving good fluidity and easy cleaning. , the effect of low gas production

Inactive Publication Date: 2015-11-25
郭伟
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Problems solved by technology

[0003] Furan resin sand has the advantages of good casting quality and low rejection rate. However, it still has many defects. In actual production, it is necessary to improve its performance from the aspects of its synthetic raw materials and p

Method used

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Embodiment Construction

[0010] A modified furan resin sand containing nano diatomite for steel castings, the resin sand is prepared from the following raw materials in parts by weight: colloidal graphite powder 3, 80-mesh microcrystalline ceramic powder 15, 50-mesh quartz sand 50, nano Tourmaline powder 0.1, polyamide wax powder 2, modified furan resin adhesive 0.5, curing agent 0.2.

[0011] The modified furan resin adhesive is made of the following raw materials in parts by weight: 37% formaldehyde solution 15, urea 5, furfuryl alcohol 40, ferrocene 0.1, phenol 4, 30% sodium hydroxide aqueous solution, 10% An appropriate amount of hydrochloric acid solution, polyoxyethylene castor oil 0.1, nano diatomite 1, silane coupling agent kh5500.1; the preparation method is: first put phenol, 3 parts by weight of urea, polyoxyethylene castor oil and formaldehyde solution into the reaction In the kettle, stir to make the materials completely dissolve and mix evenly, then add an appropriate amount of sodium hy...

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Description

technical field [0001] The invention relates to the technical field of manufacturing molding sand for steel casting, in particular to a modified furan resin sand containing nano diatomite for steel castings and a preparation method thereof. Background technique [0002] In the casting process of steel parts, the quality of the molding sand is directly related to the quality of the casting. The molding sand is mainly made of sand, adhesives and auxiliary materials mixed according to different proportions. The adhesive is a type of It is an important molding material, and its comprehensive quality is directly related to the surface quality and internal quality of castings. At present, the most widely used adhesives are mainly inorganic adhesives represented by clay sand and water glass sand and furan resin. Representative resin adhesive. [0003] Furan resin sand has the advantages of good casting quality and low rejection rate. However, it still has many defects. In actual p...

Claims

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Application Information

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IPC IPC(8): B22C1/22B22C1/02
Inventor 郭伟
Owner 郭伟
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