linear change

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。

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。

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。

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。