Nkhani

Malongosoledwe azinthu: 1. Utali wamtundu wa B thonje: ulusi wosagwira moto wopangidwa ndi njira yopota, yopangidwa ndi dongo losungunuka lamagetsi losungunuka.2. thonje lapamwamba kwambiri la S: ulusi wosagwira moto wopangidwa ndi njira yopota, yopangidwa mudongo lamwala ndi electrofusion.3. Sila thonje: ulusi wosagwira moto wopangidwa ndi njira yopota umapangidwa ndi kusakaniza kwa aluminiyamu wosakanikirana ndi silika.4. Zirconium yomwe ili ndi thonje ku Sierra: fiber refractory yomwe imapangidwa ndi njira yopota imapangidwa ndi kusakaniza kwa alumina, silika ndi zirconia.5. Thonje lokhala ndi Sierra chrome: ulusi wa refractory wopangidwa ndi njira yopota umapangidwa ndi kusungunula kusakaniza kwa alumina, silika ndi chromium oxide.Ulusi wonse umatha kukana kuukira kwamankhwala kupatula hydrofluoric acid, phosphoric acid ndi alkali wamphamvu.