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A kind of aluminum alloy casting mold sand

A casting mold and aluminum alloy technology, applied in the field of aluminum alloy casting, can solve the problems of reducing aluminum alloy casting defects, and achieve the effects of improving the yield of castings, less emissions, and excellent collapsibility

Active Publication Date: 2015-12-30
湖南精量重工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies in the prior art, one of the objects of the present invention is to provide a casting sand for aluminum alloys, which does not use fly ash as a binder, reduces environmental pollution, and greatly reduces the casting defects of aluminum alloys. reduce

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An aluminum alloy casting sand, the casting sand has the following raw materials in parts by weight: 60 parts of new quartz raw sand, 28 parts of old quartz raw sand, 3 parts of electrolytic aluminum slag powder, 6 parts of zircon sand, hollow micro 1 part of beads, 18 parts of binder slurry, and 22 parts of water; among them, the particle size of new quartz sand is 100-200 mesh, the particle size of quartz raw sand and old sand is 150-250 mesh, electrolytic aluminum slag powder and zirconium The particle size of the British sand is -300 mesh, the particle size of the hollow microsphere is about 10-60 μm, and the binder is composed of the following components in weight percentage: 36% starch, 8% furan resin, 14% calcium-based bentonite, -100 Bagasse cellulose powder 5%, zinc stearate 1%, sodium tripolyphosphate 3%, and the balance is water, wherein the electrolytic aluminum slag powder can be obtained by the following method: the electrolytic aluminum slag recovered from...

Embodiment 2

[0030] An aluminum alloy casting sand, the casting sand has the following raw materials in parts by weight: 64 parts of new quartz raw sand, 24 parts of old quartz raw sand, 5 parts of electrolytic aluminum slag powder, 4 parts of zircon sand, hollow micro 6 parts of beads, 16 parts of binder slurry, and 26 parts of water; among them, the particle size of new quartz raw sand is 100-200 mesh, the particle size of old quartz raw sand is 150-250 mesh, electrolytic aluminum slag powder and zirconium The particle size of the British sand is -300 mesh, the particle size of the hollow microsphere is about 10-60 μm, and the binder is composed of the following components in weight percentage: 40% starch, 6% furan resin, 16% calcium-based bentonite, -100 Bagasse cellulose powder 3%, zinc stearate 2%, sodium tripolyphosphate 2%, and the balance is water; wherein the electrolytic aluminum slag powder can be obtained by the following method: the electrolytic aluminum slag recovered from the...

Embodiment 3

[0038] An aluminum alloy casting sand, the casting sand has the following raw materials in parts by weight: 62 parts of new quartz raw sand, 26 parts of old quartz raw sand, 4 parts of electrolytic aluminum slag powder, 5 parts of zircon sand, hollow micro 3 parts of beads, 17 parts of binder slurry, and 24 parts of water; among them, the particle size of new quartz raw sand is 100-200 mesh, the particle size of old quartz raw sand is 150-250 mesh, electrolytic aluminum slag powder and zirconium The particle size of the British sand is -300 mesh, the particle size of the hollow microsphere is about 10-60 μm, and the binder is composed of the following components in weight percentage: 38% starch, 4% furan resin, 15% calcium-based bentonite, -100 Bagasse cellulose powder 4%, zinc stearate 1.5%, sodium tripolyphosphate 2.3%, and the balance is water; wherein the electrolytic aluminum slag powder can be obtained by the following method: the electrolytic aluminum slag recovered from...

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Abstract

The invention discloses aluminium alloy casting moulding sand. The casting moulding sand comprises following raw materials by weight: 60-64 parts of new quartz roughing sand, 24-28 parts of used quartz roughing sand, 3-5 parts of electrolytic aluminium slag powder, 4-6 parts of zircon sand, 1-6 parts of hollow microspheres, 16-18 parts of binder slurry and 22-26 parts of water, wherein the particle size of the new quartz roughing sand is 100-200 meshes, the particle size of the used quartz roughing sand is 150-250 meshes, the particle sizes of the electrolytic aluminium slag powder and the zircon sand are -300 meshes, the particle size of the hollow microspheres is 10-60 [mu]m, and the binder comprises 36-40% by weight of starch, 6-8% by weight of furan resin, 14-16% by weight of calcium bentonite, 3-5% by weight of bagasse cellulose powder having a size of -100 meshes, 1-2% by weight of zinc stearate and 2-3% by weight of sodium tripolyphosphate, with the balance being water. The electrolytic aluminium slag powder having the particle size of -300 meshes is obtained by a method as follows: electrolytic aluminium slag recovered from an electrolytic aluminium factory is subjected to impurity removal and dirt removal, cleaned, dried, subjected to ball milling, and sieved with a standard sieve having a size of 300 meshes.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting. Background technique [0002] The role of molding sand in foundry production is extremely important, and casting waste products caused by poor quality of molding sand account for about 30-50% of the total casting waste products. The usual requirements for molding sand are: 1. High strength and thermal stability to withstand various external forces and high temperatures. 2. Good fluidity, that is, the ability of the molding sand to move between sand particles under the action of external force or its own gravity. 3. Certain plasticity, that is, the ability of molding sand to deform under the action of external force and maintain the given shape when the external force is removed. 4. Better air permeability, that is, the ability of the pores of the molding sand to pass through the gas. 5. High collapsibility, also known as sand production, that is, whether the molding sand is easy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/00B22C1/26
Inventor 朱小英
Owner 湖南精量重工科技有限公司