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Easy-to-collapse magnetic modified composite sodium silicate sand for steel casting and preparation method for easy-to-collapse magnetic modified composite sodium silicate

A technology of water glass sand and steel castings, which is applied to casting molding equipment, casting molds, manufacturing tools, etc., which can solve the problems of restricting the application of water glass sand, difficulty in recycling, poor collapsibility, etc., and achieve easy molding and high utilization rate High, high strength and collapsible effect

Inactive Publication Date: 2015-12-02
陈传松
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The molding sand using water glass as a binder has the advantages of simple equipment, convenient operation, non-toxic and tasteless, and low cost. However, it also has many disadvantages. The obvious defects are mainly low strength, poor collapsibility, and difficulty in recycling. , which restricts the application of water glass sand, so it is necessary to develop a modified water glass sand with high efficiency, low toxicity and effective improvement of casting quality, so as to meet the needs of the industry and improve the quality of castings

Method used

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Embodiment Construction

[0010] An easily collapsible magnetically modified composite water glass sand for steel castings, which is prepared from the following raw materials in parts by weight: nano-alumina 5, 100-mesh quartz sand 22, hemihydrate fiber gypsum powder 2, and 150-mesh white carbon Black 14, 60 mesh old sand 40, 100 mesh natural siderite sand 4, modified water glass adhesive 2.5, sodium dodecylbenzenesulfonate 0.1, water 14.

[0011] The modified water glass adhesive is made of the following raw materials in parts by weight: 60 Baume water glass 18, nanometer mesoporous alumina 1.5, magnesium aluminum silicate 0.2, carboxymethyl cellulose 0.2, solid content 25% silica sol 4.5, nano-spherical iron ferric oxide magnetic powder 1.2, lithium tetraborate 0.1, urotropine 0.01, glucose 1.5; the preparation method is as follows: firstly mix nano-mesoporous alumina, nano-spherical ferric oxide Put the magnetic powder into the silica sol, ultrasonically disperse the nano powder in the solution, the...

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Abstract

The invention discloses easy-to-collapse magnetic modified composite sodium silicate sand for steel casting. The composite sand selects old sand, quartz sand, natural siderite and the like, which have different grain sizes and different proportions, as sand materials, and has good gas permeability and strength, wherein the natural siderite is decomposed by heating to generate magnetic substances; then, the magnetic substances are combined with nano spherical ferroferric oxide powder; during casting, a magnetic network-shaped structure for easier modeling is formed; after the casting is ended, the magnetic network-shaped structure is easy to collapse and easy; compared with a conventional sodium silicate adhesive, the modified sodium silicate adhesive has higher strength and collapsibility, and is higher in utilization rate; and the obtained casting is higher in quality.

Description

technical field [0001] The invention relates to the technical field of manufacturing molding sand for steel casting, in particular to an easily collapsed magnetically modified composite water glass sand 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 overall 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 water glass sand and resins represented by furan resin. glue. [0003] Molding sand using water glass as a binder has the advantages of simple equipment, convenient operation, non-toxic and tasteless, and low c...

Claims

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Application Information

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IPC IPC(8): B22C1/00B22C1/18
Inventor 陈传松陈小乐
Owner 陈传松
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