白刚玉精密铸造砂

发布时间：17-01-09 16:47  来源：www.bdpsj.com

白刚玉是一种高档耐火原材料，主晶为α-Al2O3,色泽洁白。具有体积密度大、气孔率低、体积稳定性和抗热震性好等特点。适用于大型铸钢件，特别市合金铸件型、芯面砂、涂料和熔模铸造的制壳材料，同时可以作为淬火钢、合金钢等半精磨，静磨喷砂磨料。

White fused alumina is the high grade redractory raw material,main crystal system is α-Al2O3,white colour.It ischaracterized by high volume density,low apparent porosity,stable  volume and thermal stability performance and so on, it is can be used for shell marking material of heavy steel casting, especially the alloy casting,core sand , coating material and melt film precision casting , and it is also can be used as half precision blasting and precision blasting material for hardened steel, alloy steel and so on.

用途	规格	理化指标
		Al2O3	Na2O	SiO2	Fe2O3	显气孔率	体积密度
精密铸造	50#-80#	≥99	≤0.5	≤0.2	≤0.15	≤8.0	≥3.45
	70#-140#	≥98.5	≤0.5	≤0.2	≤0.15	≤8.0	≥3.45
	0-200#	≥98.5	≤0.5	≤0.2	≤0.15	≤8.0	≥3.45
	0-320#	≥98.5	≤0.5	≤0.2	≤0.15	≤8.0	≥3.45

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