In the paper the use of Rare EarthMgSi alloy for rimmingsteel 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。
2
So less gas is. given off in the mould than with rimmingsteel, 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。
3
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.