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Forsterite coating

A technology of forsterite and smearing material, which is applied in the field of refractory materials, can solve the problems of suspension, stability, fluidity and poor bonding, and achieve the effect of improving suspension

Active Publication Date: 2014-11-19
浙江攀盛冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the forsterite smears on the existing market have poor suspension, stability, fluidity and bonding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1, made of forsterite 26%, magnesia 60%, high alumina powder 5%, silicon micropowder 2.5%, lightly burned magnesium powder 4.5%, borax 0.2%, sodium tripolyphosphate 0.3%, pure aluminate cement 0.5%, fiber 1.0% composition (mass percentage). Wherein, the particle size of the forsterite is 1-3 μm, and the magnesia (as a percentage of the total mass of raw materials for smearing) is 0.088-1 μm40% and 0.088 μm20% (both are percentages of the total mass of raw materials for smearing).

[0013] Its main performance indicators are: 1. MgO(%)≥70; 2. Bulk density (g / cm3): 110℃*24h≥2.01500℃×3h≥2.14; 3. Compressive strength (MPa) 110℃*24h≥ 3.01500℃×3h≥15.44, heating line change rate% 1500℃*3h-0.8.

Embodiment 2

[0014] Example 2, made of forsterite 30%, magnesia 55%, high alumina powder 5.5%, silicon micropowder 2.5%, lightly burned magnesium powder 5%, borax 0.2%, sodium tripolyphosphate 0.3%, pure aluminate cement 0.5% and 1.0% fiber (both are percentages of the total mass of raw materials in the amount of smear).

[0015] Wherein, the above-mentioned percentages are percentages of the total mass of raw materials, and the above-mentioned fibers are newspaper fibers.

[0016] The forsterite smear of the present invention has good suspension, stability, fluidity and bonding, and the bonding strength increases with the increase of the clay mass fraction within a certain range. With the increase of the clay content, the magnesium The shrinkage rate and bulk density of olivine coatings decrease, the porosity increases, and the compressive strength increases; the slag loss of forsterite coatings under air cooling is more than that under furnace cooling; and with the increase of clay conte...

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PUM

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Abstract

The invention discloses a forsterite coating which comprises the following raw materials in percentage by mass: 25%-35% of forsterite, 50%-60% of magnesia, 4%-6% of high aluminum powder, 2%-3% of silica powder, 4%-6% of caustic-burned magnesia powder, 0.15%-0.25% of borax, 0.15%-0.25% of sodium tripolyphosphate, 0.4%-0.5% of pure aluminate cement and 0.8%-1.2% of fibers. According to the forsterite coating, the suspension property, stability, flowability and bonding property are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a forsterite smear. Background technique [0002] Forsterite powder coating is a new type of refractory material, which has good high temperature performance, metal oxidation resistance and thermal shock resistance, and is widely used in the refractory industry, such as sand mold lining coating for high temperature metal castings Layer, surface coating of refractory materials for high temperature furnace, lining coating of metal molten pool, etc. [0003] However, the forsterite smears on the existing market have poor suspension, stability, fluidity and bonding. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a forsterite smear to improve the performance of suspension, stability, fluidity and bonding. [0005] In order to solve the above-mentioned technical problems, the present invention ad...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 江群英于琪芳
Owner 浙江攀盛冶金材料有限公司
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