无芯工频感应电炉炉衬材料主要有三种:石英砂、镁砂或氧化铝质料。最常用的是石英砂炉衬。按照现行工艺多是用一种主材加上适量的粘结剂,采用打捣法制成单层炉衬。由于炉衬材料性能的局限,限制了工频炉优越性的发挥。如酸性炉衬,由于二氧化硅在高温下会与合金锰发生剧烈反应,不适合熔炼高锰钢;碱性炉衬则由于MgO热膨胀系数太大,导热性较好,易烧透,极易产生贯穿性裂纹。国内一些厂家实际使用结果均证明,用碱性材料制 Core frequency induction furnace lining material there are three main types: quartz sand, magnesia or alumina material. The most commonly used quartz sand lining. In accordance with the current process is mostly used with a main material plus the right amount of binder, using the pounding method made of single-layer lining. Due to the limitations of the performance of the lining material, it limits the superiority of the industrial frequency furnace. Such as acid lining, due to silica at high temperatures and manganese alloy will react violently, not suitable for melting high manganese steel; alkaline lining due to MgO coefficient of thermal expansion is too large, good thermal conductivity, easy to burn through, prone to run through Sexual cracks. Some domestic manufacturers actual results show that the use of alkaline materials