Lost foam casting coating and preparation method thereof
A technology of lost foam casting and coating, which is used in casting molding equipment, coatings, molds, etc., can solve the problems of hindering the gas permeability of refractory materials, restricting the quality of lost foam casting products, etc., to change the density and improve the casting. The effect of quality, good breathability
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Embodiment 1-1
[0024] Bauxite is 80.1%-83.3%; quartz powder is 9.1%-9.8%; phenolic resin is 2.2%-3.5%; white latex is 1.7%-1.9%; calcium bentonite is 3.1%-4.4%; 0.3% to 0.4%.
Embodiment 1-2
[0026] Bauxite is 81.5%; quartz powder is 9.5%; phenolic resin is 2.8%; white latex is 1.8%; calcium bentonite is 3.5%; isopropanol is 0.35%.
[0027] It should be noted that the refractory powder in the present invention also includes one or more combinations of fused silica powder, zircon powder, magnesia powder, forsterite powder, brown corundum powder and white corundum powder. In addition, the present invention all adopts water as the carrier of coating.
[0028] The present invention also provides a kind of preparation method of coating, concrete steps are as follows:
[0029] Step 1, selecting bauxite ore to be calcined at a temperature of 1510°C to 1550°C;
[0030] Step 2, grinding the clinker obtained later in the section to obtain particles from -280 mesh to -310 mesh, from -280 mesh to -190 mesh, and from 90 mesh to -190 mesh;
[0031] Step 3, according to 80% of -280 mesh to -310 mesh particles, 14% of -280 mesh to -190 mesh particles, 6% of -90 mesh to -190 mesh...
Embodiment 2-1
[0034] Step 1, selecting bauxite ore to be calcined at a temperature of 1510°C to 1550°C;
[0035] Step 2, grinding the clinker obtained later in the section to obtain particles from -280 mesh to -310 mesh, from -280 mesh to -190 mesh, and from 90 mesh to -190 mesh;
[0036] Step 3, according to 80% of -280 mesh to -310 mesh particles, 14% of -280 mesh to -190 mesh particles, 6% of -90 mesh to -190 mesh particles for uniform mixing;
[0037] Step 4, according to the mixed bauxite, bauxite is 80.1% to 83.3%; quartz powder is 9.1% to 9.8%; phenolic resin is 2.2% to 3.5%; white latex is 1.7% to 1.9%; Bentonite is 3.1%-4.4%; isopropanol is mixed in a ratio of 0.3%-0.4%.
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