以板状刚玉、α-Al2O3微粉、鳞片石墨、金属铝粉和硅粉为主要原料,外加质量分数4％的热固性酚醛树脂和改性树脂为结合剂,制备了金属复合不烧Al2O3-C滑板试样,并研究了改性树脂加入量(质量分数分别为0、1％、2％、3％)对试样于400～1 000℃埋炭(石墨)和空气条件下烧后性能的影响.结果表明:加入改性树脂可明显提高两种气氛烧后试样的中低温强度,但改性树脂对试样的抗氧化性略有负面影响.选取改性树脂加入质量分数为2％的配方所制备的不烧滑板在120 t钢包试用,取得了良好效果,与不加改性树脂的普通不烧滑板相比,平均连滑率从1.3次提高至2.2次.%The metal composite unfired Al2O3-C slide plate specimens were prepared using tabular corundum,α-Al2O3 micropowder,flake graphite,aluminum powder and silicon powder as main starting materials,extra adding 4 mass％ thermoset phenol formaldehyde resin and modified resin as binders.Effects of modified resin additions (0,1％,2％ and 3％,in mass) on properties of specimens fired at 400-1 000 ℃ in carbon embedded (graphite) condition and in air,respectively,were investigated.The results show that modified resin can obviously increase the strength at medium and low temperatures,but it has a little negative effect on oxidation resistance of the specimens.The unfired slide plates with 2％ modified resin were used in a 120 t ladle and achieved a good effect.The average service life of the developed slide plates is 2.2 heats,and that of normal unfired slide plates without modified resin is 1.3 heats.
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