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Preparation method of low-cost high-performance lost foam casting coating

A lost foam casting, high-performance technology, applied in casting molding equipment, coatings, molds, etc., can solve the problems of individual performance indicators need to be improved, unfavorable promotion and use, high prices, etc., to solve the problem of abandonment, good Suspension performance, low price effect

Inactive Publication Date: 2013-09-18
遵义金业机械铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Patent Application No. 201110392557.0 discloses a preparation method of coating for lost foam casting, which uses zircon powder, kaolin and corundum powder as the refractory aggregate of the coating. The cost of coating is very high; in addition, the associated mineral powder of zircon powder is radioactive
With the development of technology, the improvement of energy saving and environmental protection requirements, and the requirements of reducing costs, although the performance of the coatings of the above patents is good, it is not conducive to popularization and use, and individual performance indicators still need to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a low-cost, high-performance coating for lost foam casting. The coating consists of the following components in parts by weight: 100 parts of refractory aggregate, of which -160-+320 mesh quartz powder accounts for 20%, -160- +320 mesh bauxite accounted for 20%, -160-+320 mesh steelmaking waste slag accounted for 60%, and the rest of the components were based on 100 parts of refractory aggregate, including 4 parts of polyvinyl acetate emulsion, 4.5 parts of aluminum sulfate, diatom 1.5 parts of soil, 0.6 parts of disodium hydrogen phosphate, 8 parts of calcium bentonite, 0.6 parts of sodium benzoate, 0.05 parts of n-octanol, 2.0 parts of sodium carboxymethyl cellulose, 0.05 parts of ethyl acetate, 0.06 parts of polyvinyl alcohol ether part and 32 parts of water, the preparation method comprises the following steps:

[0024] 1) Put the quartz powder, bauxite and steelmaking waste slag into the ball mill according to the above ratio and mill for 1 h...

Embodiment 2

[0030] A method for preparing a low-cost, high-performance coating for lost foam casting. The coating consists of the following components in parts by weight: 100 parts of refractory aggregate, of which -160-+320 mesh quartz powder accounts for 25%, -160- +320 mesh bauxite accounts for 25%, -160-+320 mesh steelmaking waste slag accounts for 50%, and the rest of the components are based on 100 parts of refractory aggregate, including 5 parts of polyvinyl acetate emulsion, 3.5 parts of aluminum sulfate, diatom 2 parts of soil, 0.4 parts of disodium hydrogen phosphate, 10 parts of calcium-based bentonite, 0.4 parts of sodium benzoate, 0.1 parts of n-octanol, 1.6 parts of sodium carboxymethyl cellulose, 0.08 parts of ethyl acetate, 0.04 parts of polyvinyl alcohol ether part and 38 parts of water, the preparation method comprises the following steps:

[0031]1) Put the quartz powder, bauxite and steelmaking waste slag into the ball mill according to the above ratio and mill them fo...

Embodiment 3

[0037] A method for preparing a low-cost, high-performance coating for lost foam casting. The coating consists of the following components in parts by weight: 100 parts of refractory aggregate, of which -160-+320 mesh quartz powder accounts for 22.5%, -160- +320 mesh bauxite accounted for 22.5%, -160-+320 mesh steelmaking waste slag accounted for 55%, and the rest of the components were based on 100 parts of refractory aggregate, including 4.5 parts of polyvinyl acetate emulsion, 4 parts of aluminum sulfate, diatom 1.8 parts of soil, 0.5 parts of disodium hydrogen phosphate, 9 parts of calcium-based bentonite, 0.5 parts of sodium benzoate, 0.08 parts of n-octanol, 1.8 parts of sodium carboxymethyl cellulose, 0.07 parts of ethyl acetate, 0.05 parts of polyvinyl alcohol ether part and 35 parts of water, the preparation method comprises the following steps:

[0038] 1) Put the quartz powder, bauxite and steelmaking waste slag into the ball mill according to the above ratio for 1....

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Abstract

The invention discloses a preparation method of a low-cost high-performance lost foam casting coating. The lost foam fireproof coating is prepared by taking 20-25% of quartz powder, 20-25% of bauxite and 50-60% of steel-making slag to prepare composite fireproof aggregate with the combination of a suspending agent, a binding agent and other auxiliary materials, and the components are in a synergistic effect. Under the condition that the cost of the fireproof aggregate is lowered and furthermore the overall cost of the coating is lowered, the high-performance lost foam casting coating which is high in fire resistance, suspension and air permeability is obtained.

Description

technical field [0001] The invention relates to the field of casting, in particular to the technical field of lost foam casting. Background technique [0002] Lost foam casting is to combine the plastic foam model with the same size and shape as the casting and the riser system made of the same material to form a model cluster, brush the lost foam paint and dry it, and bury it in the dry sand of the special sand box Vibrating and compacting the molding, using vacuum equipment to connect a special sand box to evacuate, pouring high-temperature metal liquid under the condition of maintaining a certain negative pressure in the mold to melt and gasify the mold, and the decomposition products escape through the coating / mould interface, and the liquid state A casting method in which metal occupies the position of the model, solidifies and cools to form a casting. Lost foam casting has outstanding advantages such as high dimensional accuracy of castings, less pollution, and low co...

Claims

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Application Information

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IPC IPC(8): B22C3/02B22C9/04
Inventor 朱小英
Owner 遵义金业机械铸造有限公司
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