linear change

Gunning refractory are made and its properties, such as linear change during baking and thermal shock resistance, are measured.

配制系列高炉喷补料，并检测其烧后线变化及耐热震性等性能。

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The influence of α-Al2O3 micropowder additions on permanent linear change, apparent porosity, cold crushing strength and slag resistance of MgO-Al2O3 based castable is studied in this paper. By EDAX analysis, the mechanism of slag corrosion is investigated.

研究α-Al2O3微粉加入量对钢包渣线用镁铝质浇注料线变化率、显气孔率、耐压强度和抗渣性能的影响，借助EDAX分析，探讨了浇注料的渣蚀机理。

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The results show that the low-cement castable prepared with well-sintered special grade bauxite chamotte has low water demand, low apparent porosity, low linear change and high strength.

试验结果表明，以烧结良好的特级高铝矾土熟料为原料试制的铝硅质低水泥浇注料，用水量最少，显气孔率最低，烧后线变化率（1500℃保温3h）最小，强度最高。

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The linear change after heating may be reduced by adding kyanite.

蓝晶石能有效地抑制涂料的高温收缩。

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