The wear reason of slit purging plug used in the large refining ladle has been analyzed in detail in the paper, that is the thermal stress and strong erosion and abrasion.
对狭缝式透气砖在大型精炼钢包中的损毁原因进行了分析，热应力和强大的冲刷磨损作用是两个主要因素。
It has good thermal stability, strong abrasion resistance and appropriate particle size distribution.
该助剂还具有良好的水热稳定性、抗磨损性及合适的粒度分布。
Problems: the primary stress to which the surface of the mould is exposed are thermal shock, abrasion and chemical reactions between the liquid alloy and the iron in the steel mould.
问题：压铸模具表面主要面临的问题有热冲击、磨损、液态合金与模具钢的化学反应等。
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