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Iron mold casting sand for improving compactness of casting

A technology of compactness and model sand, applied in the direction of casting molds, casting molding equipment, cores, etc., can solve the problems of poor stability of casting sand mold structure, affecting the pass rate of castings, and non-conformity of casting structure, etc., to achieve scientific and reasonable component preparation , Strong acid and alkali corrosion resistance, and the effect of improving compactness

Inactive Publication Date: 2017-10-17
安徽省辉煌机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the hardness of the castings produced by this process is poor, and the stability of the sand casting mold structure is poor, and the structure is not standard, which leads to the casting structure after casting does not meet the standard, which affects the qualified rate of castings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 A kind of iron model sand that improves casting compactness

[0015] An iron model sand for improving the compactness of castings, which is composed of the following components by weight: 98 parts by weight of molding sand, 36 parts by weight of stones, 15 parts by weight of sulphoaluminate cement, 5 parts by weight of boric acid, sodium fluorosilicate 4 parts by weight, 12 parts by weight of cast stone powder, 2 parts by weight of nano-titanium dioxide, 3 parts by weight of nano-antimony dioxide, 1 part by weight of glass fiber, and 140 parts by weight of water.

Embodiment 2

[0016] Embodiment 2 A kind of iron model sand that improves casting compactness

[0017] An iron model sand for improving the compactness of castings, which is composed of the following components by weight: 105 parts by weight of molding sand, 34 parts by weight of stones, 17 parts by weight of sulphoaluminate cement, 3 parts by weight of boric acid, sodium fluorosilicate 5 parts by weight, 10 parts by weight of cast stone powder, 3 parts by weight of nano-titanium dioxide, 2 parts by weight of nano-antimony dioxide, 2 parts by weight of glass fiber, and 130 parts by weight of water.

Embodiment 3

[0018] Embodiment 3 A kind of iron model sand that improves casting compactness

[0019] An iron model sand for improving the compactness of castings, which is composed of the following components by weight: 112 parts by weight of molding sand, 32 parts by weight of stones, 19 parts by weight of sulphoaluminate cement, 1 part by weight of boric acid, sodium fluorosilicate 6 parts by weight, 8 parts by weight of cast stone powder, 4 parts by weight of nano-titanium dioxide, 1 part by weight of nano-antimony dioxide, 3 parts by weight of glass fiber, and 140 parts by weight of water.

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PUM

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Abstract

The invention discloses an iron mold casting sand for improving compactness of a casting. The iron mold casting sand comprises the following components, by weight, 98-112 parts of casting sand, 32-36 parts of cobblestone, 15-19 parts of sulphate aluminum cement, 1-5 parts of boric acid, 4-6 parts of sodium fluosilicate, 8-12 parts of casting stone powder, 2-4 parts of nanometer titania, 1-3 parts of nanometer tellurium dioxide, 1-3 parts of glass fibre and 120-140 parts of water. According to the iron mold casting sand for improving compactness of the casting, component preparation is scientific and reasonable, particle distribution is more even, particle combination is more firm, compactness of the prepared casting is improved efficiently, heat resistance is higher, compressive strength is higher, and acid and alkali corrosion resistance is higher.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing, in particular to an iron model sand for improving the compactness of castings. Background technique [0002] Casting is one of the main methods of producing rough parts. Its forming method is mainly to heat and melt iron parts to make it a fluid iron liquid, and then cast it into a mold cavity with a certain shape. Fill the cavity, cool and solidify into a casting or part. The traditional casting process includes the following steps: A. Make a mold for molding and core making according to the shape of the product. B. Put the mold into the upper and lower sand boxes of the sand box for sand filling, compaction, and then close the box after mold removal. C. Pour the molten iron into the mold cavity in the sand box, and finally remove the sand to clean the casting to obtain the casting. At present, the hardness of the castings produced by this process is poor, and the structure st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00
CPCB22C1/00
Inventor 胡宗道
Owner 安徽省辉煌机械制造有限公司