Slag system for electroslag remelting high-titanium and high-silicon stainless steel and preparation method thereof

The invention discloses a slag system for electroslag remelting high-titanium and high-silicon stainless steel and a preparation method thereof. The slag system is prepared from the following components in percentage by weight: 51.55-52.45% of CaF2, 19.55-20.15% of CaO, 2.75-8% of MgO, 19.55-20.15% of Al2O3, 3.85-4.25% of TiO2, and less than or equal to 0.35% of SiO2. According to the slag system,the reaction of Ti and Si elements in high-titanium and high-silicon stainless steel with oxygen to form new harmful inclusions, especially class-D fine inclusions can be avoided, the purity of steelis improved, and a prepared high-titanium and high-silicon stainless steel electroslag ingot conforms to relevant standards and customer requirements. 本发明公开了一种用于电渣重熔高钛高硅不锈钢的渣系及其制备方法，所述渣系以重量百分比计，包括如下成分CaF：51.55～52.45；CaO：19.55～20.15；MgO：2.75～8；AlO：19.55～20.15；TiO：3.85～4.25；SiO：≤0.35。本发明提供的渣系能够避免高钛高硅不锈钢中的Ti、Si元素与氧反应形成新的有害夹杂物特别是D类细系夹杂物，提高了钢的纯净度，制备的高钛高硅不锈钢电渣锭符合相关标准和客户的需求。