Preparation method of mixed binder for green sand

A technology of binder and green sand, which is used in casting molding equipment, cores, molds, etc., can solve the problems of high production cost of green sand, poor air permeability of green sand, low thermal tensile strength, etc., so as to reduce production costs. , The effect of high air permeability and high thermal tensile strength

Pending Publication Date: 2022-01-28
曲阜市铸造材料厂
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for preparing a mixed binder for green sand, which solves the problem that there are many chemicals mixed in the existing green sand, the production cost of green sand is high, and the produced wet Molding sand has poor air permeability and low hot tensile strength

Method used

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Embodiment Construction

[0016] Embodiments of the present invention are further described below.

[0017] The preparation method of a mixed binder for green sand described in this specific embodiment includes 10-15 parts of silica powder, 8-60 parts of montmorillonite, 10-15 parts of kaolin, and monocrystalline silicon powder. 2-5 parts, yellow sand 12-18 parts, diopside 4-7 parts, chromite sand 6-9 parts, sodium amphibole 7-12 parts, siliceous shale 3-5 parts, purple sand soil 9-13 parts 3-6 parts, aluminum potassium sulfate 3-6 parts, coal powder 2-6 parts, bentonite 3-4 parts, water 30-40 parts;

[0018] The preparation method of the mixed binder for the green sand, the concrete steps are as follows:

[0019] Step 1: Take 10-15 parts of silicon dioxide silicon powder, 2-5 parts of monocrystalline silicon powder, 2-6 parts of coal powder, and 3-6 parts of aluminum potassium sulfate and mix them uniformly to obtain material 1;

[0020] Step 2: Take 8-60 parts of montmorillonite, 10-15 parts of kao...

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PUM

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Abstract

The invention relates to a preparation method of a mixed binder for green sand. The preparation method comprises the following specific steps: uniformly mixing 10-15 parts of silicon dioxide powder, 2-5 parts of monocrystalline silicon powder, 2-6 parts of pulverized coal and 3-6 parts of aluminum potassium sulfate to obtain a material I; respectively grinding 8-60 parts of montmorillonite, 10-15 parts of kaolin, 12-18 parts of yellow sand, 4-7 parts of diopside, 6-9 parts of chromite sand, 7-12 parts of riebeckite and 3-5 parts of siliceous shale, sieving by a 200-mesh sieve, and uniformly mixing to obtain a material II; taking 9-13 parts of Zisha clay and 3-4 parts of bentonite, respectively sieving with the 200-mesh sieve, and uniformly mixing to obtain a material III; mixing and evenly distributing the first material prepared in the first step, the second material prepared in the second step and the third material prepared in the third step to obtain a material IV; adding water into the material IV prepared in the step IV, and uniformly mixing to obtain the mixed binder for green sand. The preparation method has the beneficial effects that the production cost of the green sand is reduced, and the green sand is relatively high in air permeability and relatively high in hot tensile strength.

Description

technical field [0001] The invention relates to a preparation method of a binder, in particular to a preparation method of a mixed binder for green sand. Background technique [0002] Green casting refers to the casting method in which the sand mold is cast directly without drying after it is made. Green sand is widely used, and the quality of green sand affects the yield of castings. At present, there are many chemicals mixed in the existing green sand. The production cost of molding sand is relatively high, and the produced green sand has poor air permeability and low thermal tensile strength. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing a mixed binder for green sand, which solves the problem that there are many chemicals mixed in the existing green sand, the production cost of green sand is high, and the produced wet Molding sand has poor air permeability and low hot tensile strength...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/18
CPCB22C1/18
Inventor 高化民
Owner 曲阜市铸造材料厂
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