A water glass carbon dioxide hardened molding sand suitable for casting alkaline high manganese steel casting materials

A technology of carbon dioxide and high manganese steel, applied in casting molding equipment, casting molds, cores, etc., can solve the problems of high thermal expansion rate and poor collapsibility, achieve smooth surface, good reusability and collapsibility, and overcome sticky sand The effect of defects

Active Publication Date: 2021-02-09
广西长城机械股份有限公司
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  • Application Information

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Problems solved by technology

[0004] The invention provides a water glass carbon dioxide hardened molding sand suitable for casting alkaline high-manganese steel casting materials, so as to solve the problems of high thermal expansion rate and poor collapsibility in the molding and casting process of natural silica sand or artificially broken silica sand.

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  • A water glass carbon dioxide hardened molding sand suitable for casting alkaline high manganese steel casting materials
  • A water glass carbon dioxide hardened molding sand suitable for casting alkaline high manganese steel casting materials

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preparation example Construction

[0029] The preparation method of the described water glass carbon dioxide hardened molding sand that is suitable for casting alkaline high manganese steel casting material, comprises the following steps:

[0030] (1) The raw materials are prepared by pulverizing and ball milling to form a powder with a particle size greater than 40 meshes. According to the parts by weight of the formula, calcium oxide sand, forsterite sand, silica sand, zircon sand, polytrifluoroethylene Ethylene propylene, paraffin-based calcium petroleum sulfonate, and chromium oxide fibers are stirred and mixed to obtain a powder mixture;

[0031] (2) Add the powder mixture into the sand mixing device, uniformly pump the water glass solution into the sand mixing device with a liquid pump, and make the powder mixture evenly mix to make a semi-finished product;

[0032] (3) Add the semi-finished product to the sand box where the mold is placed, and tighten it;

[0033] (4) Insert a vent hole in the molding s...

Embodiment 1

[0035] A kind of sodium silicate carbon dioxide hardened molding sand suitable for casting alkaline high manganese steel casting materials, which includes the following raw materials in parts by weight: 60 parts of calcium oxide sand, 8 parts of forsterite sand, 2 parts of silica sand, zircon sand 3 parts, 5 parts of water glass solution, 1 part of polytrifluoroethylene propylene, 2 parts of paraffin-based calcium petroleum sulfonate, 0.4 part of chromium oxide fiber;

[0036] The calcium oxide content in the calcium oxide sand is 97.53%, and the particle size is 20 mesh;

[0037] The magnesium oxide content in the forsterite sand is 48.76%, and the particle size is 20 mesh;

[0038] The silicon dioxide content in the silica sand is 87.16%, the alumina is 2.69%, and the particle size is 40 mesh;

[0039] The content of zirconia in the zircon sand is 67.58%, the content of silicon oxide is 15.61%, the content of titanium oxide is 0.24%, the content of aluminum oxide is 0.13%, ...

Embodiment 2

[0049] A kind of sodium silicate carbon dioxide hardened molding sand suitable for casting alkaline high manganese steel casting materials, which includes the following raw materials in parts by weight: 70 parts of calcium oxide sand, 10 parts of forsterite sand, 3 parts of silica sand, zircon sand 5 parts, 6 parts of water glass solution, 1.6 parts of polytrifluoroethylene propylene, 3 parts of paraffin-based calcium petroleum sulfonate, 0.6 parts of chromium oxide fiber;

[0050] The calcium oxide content in the calcium oxide sand is 98.29%, and the particle size is 40 mesh;

[0051] The magnesium oxide content in the forsterite sand is 53.82%, and the particle size is 40 mesh;

[0052] The silicon dioxide content in the silica sand is 90.47%, the alumina is 5%, and the particle size is 20 mesh;

[0053] The content of zirconia in the zircon sand is 66.12%, the content of silicon oxide is 15.49%, the content of titanium oxide is 0.14%, the content of aluminum oxide is 0.21%...

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Abstract

The invention discloses a sodium silicate carbon dioxide hardened molding sand suitable for casting alkaline high manganese steel casting materials, which comprises the following raw materials in parts by weight: 56-80 parts of calcium oxide sand, 8-12 parts of forsterite sand , 2-4 parts of silica sand, 3-6 parts of zircon sand, 4-7 parts of water glass solution, 1-2 parts of polytrifluoroethylene propylene, 2-4 parts of paraffin-based calcium petroleum sulfonate, 0.3-0.8 parts of chromium oxide fiber share. The water glass carbon dioxide hardened molding sand suitable for casting alkaline high-manganese steel casting materials has low thermal expansion coefficient, high collapsibility, no chemical reaction with alkaline high-manganese steel casting materials, low price, and can be popularized and applied.

Description

technical field [0001] The invention belongs to the field of casting materials, in particular to water glass carbon dioxide hardened molding sand suitable for casting alkaline high manganese steel casting materials. Background technique [0002] Sand casting is a casting method that produces castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting. Because the molding materials used in sand casting are cheap and easy to obtain, the casting mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings. It has been the basic process in casting production for a long time. The basic raw materials for making sand molds are foundry sand and sand binder. [0003] At present, the foundry sand used in large quantities for casting alkaline high manganese steel castings is mainly natural silica sand or artificially crushed silica sand, but natural silica sand or artificially...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/10B22C1/02B22C1/18
CPCB22C1/02B22C1/10B22C1/188
Inventor 赵四勇廖钊康建田辉周正
Owner 广西长城机械股份有限公司
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