Casting molding sand

A casting mold and quartz sand technology, applied in the field of foundry sand, can solve the problems of low cost, the mold cannot be reused, time-consuming, etc., and achieve the effects of low production cost, fewer internal pores and shrinkage holes, and small wall thickness error.

Inactive Publication Date: 2018-02-27
东风精密铸造安徽有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage is that the cost is lower, because the sand used in the mold can be reused; the disadvantage is that the production of the mold is time-consuming, and the mold itself cannot be reused, and the finished product must be destroyed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A foundry molding sand, which is composed of the following raw materials in parts by weight: 65 parts of quartz sand, 30 parts of dead burnt magnesia, 30 parts of corundum sand, 20 parts of kaolin, 40 parts of clay, 6 parts of sodium carbonate, 5 parts of glass fiber, and domestic garbage ash 40 parts of slag, 8 parts of fly ash, 20 parts of lightly burned powder, 6 parts of furan resin, 11 parts of coal powder, and 30 parts of water.

[0017] Wherein, the domestic garbage ash is composed of the following mass percentage components: SiO2 50%, Fe2O3 16%, Al2O3 15%, CaO 15%, TiO2 1.3%, MgO 2%, K2O 1.0%, Na2O 1%, P2O5 3.5% %, the balance is moisture.

Embodiment 2

[0019] A foundry molding sand, which is composed of the following raw materials in parts by weight: 80 parts of quartz sand, 40 parts of dead-burned magnesia, 40 parts of corundum sand, 30 parts of kaolin, 60 parts of clay, 15 parts of sodium carbonate, 9 parts of glass fiber, domestic garbage 60 parts of ash, 13 parts of fly ash, 30 parts of lightly burned powder, 9 parts of furan resin, 21 parts of coal powder, and 50 parts of water.

[0020] Wherein, the domestic garbage ash is composed of the following mass percentage components: SiO2 70%, Fe2O3 25%, Al2O3 25%, CaO 23%, TiO2 1.9%, MgO 4%, K2O 3.5%, Na2O 3.5%, P2O5 5.5% %, the balance is moisture.

Embodiment 3

[0022] A foundry molding sand, which is composed of the following raw materials in parts by weight: 70 parts of quartz sand, 33 parts of dead-burned magnesia, 33 parts of corundum sand, 23 parts of kaolin, 45 parts of clay, 9 parts of sodium carbonate, 6 parts of glass fiber, domestic garbage 45 parts of ash, 10 parts of fly ash, 22 parts of lightly burned powder, 7 parts of furan resin, 15 parts of pulverized coal, and 35 parts of water.

[0023] Wherein, the domestic garbage ash is composed of the following mass percentage components: SiO2 50%, Fe2O3 16%, Al2O3 15%, CaO 15%, TiO2 1.3%, MgO 2%, K2O 1.0%, Na2O 1%, P2O5 3.5% %, the balance is moisture.

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PUM

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Abstract

The invention discloses a casting molding sand. The casting molding sand is composed of the following raw materials of, by weight, 65-80 parts of quartz sand, 30-40 parts of dead burned magnesia, 30-40 parts of emery, 20-30 parts of kaolin, 40-60 parts of clay, 6-15 parts of sodium carbonate, 5-9 parts of glass fiber, 40-60 parts of domestic waste ash, 8-13 parts of fly ash, 20-30 parts of light burning powder, 6-9 parts of furan resin, 11-21 parts of pulverized coal and 30-50 parts of water. The invention has the beneficial effects of 1, wall thickness error of casting produced by the moldingsand is small, surface sand holes of the casting produced by the molding sand are small, and internal air holes and the shrinkage holes of the casting produced by the molding sand are small, and theyield is high; and 2, production cost of the molding sand is low, the produced casting is easy to peel, and the surface of the produced casting is smooth.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to casting sand. Background technique [0002] Casting is the process of smelting metal into a liquid that meets certain requirements and pouring it into a mold, cooling and solidifying, and cleaning to obtain a casting with a predetermined shape, size and performance. Because the casting blank is almost shaped, the purpose of free machining or a small amount of machining reduces the cost and reduces the production time to a certain extent. Casting is one of the basic processes of the modern device manufacturing industry. [0003] Molding sand mainly includes sand casting and special casting. Ordinary sand casting uses sand as the mold material, also known as sand casting and foundry, including wet sand mold, dry sand mold and chemically hardened sand mold, but not all sand can be used for casting. The advantage is that the cost is lower, because the sand used in the casting mold ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00
CPCB22C1/00
Inventor 鲁茂波
Owner 东风精密铸造安徽有限公司
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