白剛玉精密鑄造砂

發布時間：19-09-05 09:34  來源：www.awsfly.com

白剛玉是一種高檔耐火原材料，主晶為α-Al2O3,色澤潔白。具有體積密度大、氣孔率低、體積穩定性和抗熱震性好等特點。適用于大型鑄鋼件，特別市合金鑄件型、芯面砂、涂料和熔模鑄造的制殼材料，同時可以作為淬火鋼、合金鋼等半精磨，靜磨磨料。

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	規格	理化指標
		Al2O3	Na2O	SiO2	Fe2O3	顯氣孔率	體積密度
精密鑄造	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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