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A kind of high permeability foundry sand and preparation method thereof

A breathable, casting technology, applied in casting molding equipment, casting molds, cores, etc., can solve the problems of surface bumps, scratches, etc., to achieve high yield, internal quality improvement, dust pollution and solid waste discharge reduced effect

Inactive Publication Date: 2021-02-26
含山县能华铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, surface bumps and scratches after machining of castings are also such defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-permeability foundry sand, made of the following components in parts by weight: seawater magnesia 90, magnesium dihydrogen phosphate gel 6, modified diatomite 10, glycerol monobehenate 2, polyethyleneimine 1.5 , pyrophyllite powder 3, potassium titanate whisker 3, ball clay 2, sodium antimonate 3.5, water 8; the ball clay is activated,

[0021] The preparation method of the high air permeability foundry sand is to add seawater magnesia, magnesium dihydrogen phosphate gel, modified diatomaceous earth, glycerol monobehenate and mix for 10 minutes in a Y-type mixer, and then add poly Ethyleneimine, pyrophyllite powder, and potassium titanate whiskers were mixed for 60 minutes, and finally ball clay, sodium antimonate, and water were added, and then mixed for another 80 minutes before discharging.

[0022] Further, the particle size of the seawater magnesia is 0.8-1.0 mm.

[0023] Further, the acid-activated treatment of the ball clay is as follows: calcining the ba...

Embodiment 2

[0030] A high-permeability foundry sand, made of the following components in parts by weight: seawater magnesia 90, magnesium dihydrogen phosphate gel 6, modified diatomite 10, glycerol monobehenate 4, polyethyleneimine 2.5 , pyrophyllite powder 3, potassium titanate whisker 3, ball clay 5, sodium antimonate 4.5, water 12; the ball clay is activated,

[0031] The preparation method of the high air permeability foundry sand is to add seawater magnesia, magnesium dihydrogen phosphate gel, modified diatomaceous earth, glycerol monobehenate and mix for 15 minutes in a Y-shaped mixer, and then add poly Ethyleneimine, pyrophyllite powder, and potassium titanate whiskers are mixed for 90 minutes, and finally ball clay, sodium antimonate, and water are added, and then mixed for another 100 minutes, and the material is ready to be discharged.

[0032] Further, the particle size of the seawater magnesia is 1.0 mm.

[0033] Further, the acid activation treatment of the ball clay is spec...

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PUM

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Abstract

The invention belongs to the field of casting technology, in particular to a high-permeability casting sand and a preparation method thereof. The molding sand disclosed by the invention saves energy, basically eliminates harmful gas pollution, greatly reduces dust pollution and solid waste discharge, and improves the surface quality of castings. Improvement, internal quality improvement, dimensional accuracy improvement, high yield rate, good molding sand reusability, less sand consumption, lower cost, suitable for manual and machine molding cast iron production.

Description

technical field [0001] The invention belongs to the technical field of casting, in particular to a high-permeability foundry sand and a preparation method thereof. Background technique [0002] Sand casting refers to the 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. The most commonly used foundry sand is siliceous sand. When the high-temperature performance of silica sand cannot meet the requirements of use, special sand such as zircon sand, chromite sand, and corundum sand are used. In order to make the sand mold and cor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/02B22C1/18
CPCB22C1/02B22C1/185
Inventor 江进华
Owner 含山县能华铸造有限公司