Aluminum alloy casting moulding sand and preparing method thereof

A technology of casting molds and aluminum alloys, which is applied in casting molding equipment, casting molds, metal processing equipment, etc., can solve the problems of casting quality decline and poor performance, so as to improve the yield of castings, reduce the cost of castings, and improve the pressure resistance. Effect

Inactive Publication Date: 2018-02-09
MAANSHAN SONGHAK INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the comprehensive mechanical properties of the molding sand used for aluminum alloy casting are poor, resulting in a significant decline in the quality of the casting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The foundry sand components include 20 parts by weight of quartz sand, 10 parts of hao sand, 10 parts of corundum sand, 5 parts of graphite powder, 5 parts of bentonite, 5 parts of diatomite, 2 parts of hollow microspheres, 3 parts of glass fiber, 4 parts of clay, 2 parts of lightly burned powder, 10 parts of furan resin, 2 parts of polypropylene fiber.

[0016] The preparation method of the present embodiment comprises the following steps:

[0017] A. Mix quartz sand, hao sand, corundum sand and graphite powder and add them to the sand mixer for mixing to obtain mixture A;

[0018] B. Preheat the mixture A. The preheating temperature is 50°C and the preheating time is 20 minutes. Then add bentonite, diatomaceous earth, clay, lightly burned powder, and furan resin. After mixing, perform high-speed stirring at a stirring rate of 4000 rpm / min, stirring time is 25min, obtains mixture B;

[0019] C. Add hollow microspheres, glass fibers, and polypropylene fibers to mixtu...

Embodiment 2

[0021] The casting sand components include 40 parts by weight of quartz sand, 20 parts of hao sand, 30 parts of corundum sand, 10 parts of graphite powder, 15 parts of bentonite, 18 parts of diatomite, 6 parts of hollow microspheres, 6 parts of glass fiber, 12 parts of clay, 8 parts of lightly burned powder, 18 parts of furan resin, and 4 parts of polypropylene fiber.

[0022] The preparation method of the present embodiment comprises the following steps:

[0023] A. Mix quartz sand, hao sand, corundum sand and graphite powder and add them to the sand mixer for mixing to obtain mixture A;

[0024] B. Preheat the mixture A. The preheating temperature is 50°C and the preheating time is 20 minutes. Then add bentonite, diatomaceous earth, clay, lightly burned powder, and furan resin. After mixing, perform high-speed stirring at a stirring rate of 4000 rpm / min, stirring time is 25min, obtains mixture B;

[0025] C. Add hollow microspheres, glass fibers, and polypropylene fibers ...

Embodiment 3

[0027] The foundry sand components include 25 parts by weight of quartz sand, 12 parts of hao sand, 15 parts of corundum sand, 6 parts of graphite powder, 6 parts of bentonite, 8 parts of diatomite, 3 parts of hollow microspheres, 4 parts of glass fiber, 6 parts of clay, 3 parts of lightly burned powder, 12 parts of furan resin, 3 parts of polypropylene fiber.

[0028] The preparation method of the present embodiment comprises the following steps:

[0029] A. Mix quartz sand, hao sand, corundum sand and graphite powder and add them to the sand mixer for mixing to obtain mixture A;

[0030] B. Preheat the mixture A. The preheating temperature is 50°C and the preheating time is 20 minutes. Then add bentonite, diatomaceous earth, clay, lightly burned powder, and furan resin. After mixing, perform high-speed stirring at a stirring rate of 4000 rpm / min, stirring time is 25min, obtains mixture B;

[0031] C. Add hollow microspheres, glass fibers, and polypropylene fibers to mixtu...

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PUM

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Abstract

The invention discloses aluminum alloy casting moulding sand and a preparing method thereof. The casting moulding sand comprises, by weight, 20-40 parts of quartz sand, 10-20 parts of zircon sand, 10-30 parts of emery, 5-10 parts of graphite powder, 5-15 parts of bentonite, 5-18 parts of kieselguhr, 2-6 parts of hollow micro beads, 3-6 parts of glass fiber, 4-12 parts of clay, 2-8 parts of light-roasted powder, 10-18 parts of furan resin and 2-4 parts of polypropylene fiber. The preparing method is simple, the yield of castings can be greatly increased through the prepared moulding sand, and the casting cost is reduced.

Description

technical field [0001] The invention relates to the technical field of casting molding sand preparation, in particular to an aluminum alloy casting molding sand and a preparation method thereof. Background technique [0002] The role of molding sand in foundry production is extremely important, and the casting waste caused by poor quality of molding sand accounts for about 30-50% of the total casting waste. 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 c...

Claims

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Application Information

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IPC IPC(8): B22C1/02B22C5/04
CPCB22C1/02B22C5/04
Inventor 施享
Owner MAANSHAN SONGHAK INFORMATION TECH CO LTD
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