【作者】 黄晋； 张友寿； 夏露； 李四年；

【Author】 Huangjin Zhang Youshou Xia Lu Li Sinian Hubei University of Technology

【机构】 湖北工业大学；

【摘要】 本文介绍了一种替代锆英粉涂料、用于铸钢件的新型醇基砂状涂料,耐火骨料采用以70～200目为主的铬铝镁锆质复合砂状材料。这种涂料有着良好的悬浮稳定性,涂刷流畅,多次反复涂刷不起皮,附着强度高,发气量小等特点。它与高温钢水接触时,有着很高的热稳定性,不与FeO等金属氧化物起熔蚀反应而生成低熔渣相,抗钢水渗透能力强,在许多铸造厂的应用表明:其防渗透粘砂效果优于锆英粉涂料。当涂刷达到5～6遍,可以替代铬铁矿面砂工艺应用于厚大铸钢件热节处。更多还原

【Abstract】 A new type of alcohol base sand state coating that may replace zircon coating for steel castings is introduced in this paper.The refractory of the coating is comprised of 70～200 mesh chromite and alumina sand materials.This coating has some features such as good suspension stability,brushing being easy and smooth,the coating being not stripped off the mould surface while painting too thick, high adhesive force to the mould and a low amount of gas produced.It has very high heat stability and does not occur erosion reaction with FeO or metal oxides and does not produce low melting point slag, so the coating can prevent molten steel from penetrating into the pores of mould.Applications in many foundries have shown that effect of the coating on resisting penetration is better than that of zircon coating.As painting up to 5～6 times on the heat knobs of the moulds for thick section steel castings it can substitute for chromite face sand process.更多还原