In the paper the use of Rare EarthMgSi alloy for rimming steel coping is studied instead of aluminium.
主要研究稀土镁硅合金替代铝条应用于沸腾钢浇注的化学封顶工艺；分析了浇注工艺的可行性。
So less gas is. given off in the mould than with rimming steel, but enough bubbles form at the top of the ingot to counteract most of the shrinkage.
所以，在钢锭模内析出的气体没有沸腾钢多，但又在钢锭头产形成足够的气泡抵消大部分钢的收缩。
A special inlaid technique for rimming enamelled utensils with stainless steel rings was set forward, and the advantages gained by this enclosing process were highlighted.
叙述了搪瓷烧器不锈钢边圈的镶嵌式包边技术，指出了该项新工艺的优点。
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