What material is used for the lining of the induction furnace?

鹼性爐襯：主要用於熔煉高合金鋼、碳鋼、高錳鋼、高鉻鋼、工具鋼、不銹鋼等各種合金鋼。

Acid lining: Mainly used for the working lining of coreless induction furnace for melting and insulating cast iron.