Cast iron pot with composite material as sand mould and casting method thereof

A composite material, cast iron pot technology, used in casting molding equipment, casting molds, cores, etc., can solve the problems of blisters or pores on the surface, affecting product performance, and protrusions on the surface of castings, reducing shrinkage cavities. and cracks, improved technical means, and the effect of small comprehensive thermal resistance

Inactive Publication Date: 2016-08-17
惠州市旲桥科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the main problems in the casting process of cast iron pots are: 1. The casting process of cast iron pots is a physical and chemical change process dominated by heat conduction. Due to the large temperature difference between the molten iron and the mold, there is residual heat in the casting process of cast iron pots. The stress is far greater than the tensile strength of the cast iron pan, which makes the cast iron pan prone to cracking and affects product quality
Second, during the casting process of cast iron pots, the sand mold also has a great influence on the product quality. If the sand mold is

Method used

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  • Cast iron pot with composite material as sand mould and casting method thereof
  • Cast iron pot with composite material as sand mould and casting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Casting method of cast iron pot using composite material as sand mold

[0036] Include the following steps:

[0037] Step S1, preparation of composite material sand mold: quantitatively weigh 300 parts of quartz sand, 250 parts of alumina, 30 parts of asbestos powder, 10 parts of dolomite, 10 parts of magnesite, 10 parts of kaolin, 10 parts of orthoclase, and 10 parts of graphite Mix the raw materials evenly and put them into a ball mill for 12 hours, take them out and dry them for 8 hours, pass the dried raw materials through a 20-mesh sieve, mix the sieved raw materials into the required composite material sand mold, and place the composite material sand mold in a closed high pressure resistant In the container, apply a layer of butter inside the composite sand mold.

[0038] Step S2, high-pressure casting of cast iron pot: Put the cast iron block into the iron melting furnace, fully heat the cast iron block to 1430°C, completely melt the cast iron block into molten ...

Embodiment 2

[0042] Casting method of cast iron pot using composite material as sand mold

[0043] Include the following steps:

[0044]Step S1, preparation of composite material sand mold: quantitatively weigh 500 parts of quartz sand, 450 parts of alumina, 100 parts of asbestos powder, 50 parts of dolomite, 50 parts of magnesite, 50 parts of kaolin, 50 parts of orthoclase, and 30 parts of graphite Mix the raw materials evenly and put them into a ball mill for 24 hours, take them out and dry them for 12 hours, pass the dried raw materials through a 40-mesh sieve, mix the sieved raw materials into the required composite material sand mold, and place the composite material sand mold in a closed high pressure resistant In the container, apply a layer of butter inside the composite sand mold.

[0045] Step S2, high-pressure casting of cast iron pot: Put the cast iron block into the melting iron furnace, fully heat the cast iron block to 1450°C, completely melt the cast iron block into molten...

Embodiment 3

[0049] Casting method of cast iron pot using composite material as sand mold

[0050] Include the following steps:

[0051] Step S1, preparation of composite material sand mold: quantitatively weigh 530 parts of quartz sand, 380 parts of alumina, 55 parts of asbestos powder, 30 parts of dolomite, 30 parts of magnesite, 25 parts of kaolin, 25 parts of orthoclase, 18 parts of graphite Mix the raw materials evenly and put them into a ball mill for 18 hours, take them out and dry them for 10 hours, pass the dried raw materials through a 30-mesh sieve, and mix the sieved raw materials into the required composite material sand mold, and place the composite material sand mold in a closed high pressure resistant In the container, apply a layer of butter inside the composite sand mold.

[0052] Step S2, high-pressure casting of cast iron pot: Put the cast iron block into the iron melting furnace, fully heat it to 1440°C to completely melt the cast iron block into molten iron, then slo...

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Abstract

The invention discloses a cast iron pot with a composite material as a sand mould and a casting method thereof. The casting method includes the steps that sand mould raw materials are weighed quantitatively and mixed evenly, then the materials are ball-milled and dried, a composite material sand mould is obtained, and the composite material sand mould is placed in a high-pressure container; cast iron blocks are fully heated and completely melted into molten iron, the molten iron is poured into the composite material sand mould, pressure in the pressure container is high pressure, a staged cooling means is adopted till the molten iron is completely cooled to room temperature to form castings, pressure continues to be maintained, and high pressure is relieved; the mould is taken out, the composite material sand mould is slowly removed by means of a metal tool, and the cast iron pot is obtained. Casting technologies, especially the improved casting technologies of improving a sand mould formula, improving pressure in a sand box, adopting the staged cooling means and the like, can greatly improve product quality of the cast iron pot and has certain economic and social meaning.

Description

technical field [0001] The invention relates to the field of casting, in particular to a cast iron pot using a composite material as a sand mold and a casting method thereof. Background technique [0002] Cast iron pans have a long history and a wide variety, and are loved by people for their advantages such as solid texture, low price, durability, uniform heat conduction, and the ability to be used on a variety of heat sources. Long-term cooking in a cast iron pan can increase the iron element necessary for the human body, and an oil film will be formed on the surface of the iron pan, which not only does not stick to the pan, has no adverse effects on the human body, but also avoids the potential impact of various harmful chemicals on the human body. However, because cast iron pans are easy to stick to the pan and the preparation process is backward, the quality of cast iron pans is not high, which affects the further development of cast iron pans. [0003] However, cast i...

Claims

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Application Information

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IPC IPC(8): B22C1/00B22C9/02B22D27/09
CPCB22C1/00B22C9/02B22D27/09
Inventor 郭怀花何成龙
Owner 惠州市旲桥科技有限公司
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