Detailed Product Description

This product  is mainly made  from graphite,it is  pollution-free to molten copper and free from preheating before used (It should  be  kiln dried after  damped).While being used after being set up ,it is  not easy  to be oxidized  , none-explosion and none- rupture .It  can be used  repeatly without the defects of  being oxidized easily  compared with  the common graphite protective sleeve or  the defects of needing  preheating   and  exploding  easily compared with carborundum protective sleeve..

When the protective sleeve is set up in the crystallizer,the insulation sleeve should be installed before the protective sleeve is.The protective sleeve should be set up neither too tightly nor too loosely and not be hit by heavy things, when the graphite mould is installed , of which the threads can't be screwed completely  and there should be 2-3 threads left, enlace  the 2-3 threads for two circles with asbestos rope  , then screw the 2-3 threads completely till the graphite mould and the bottom of the protective sleeve coincide completely,when the graphite mould is replaced , take it out and  install another one with  the same installing mothod  ,being  convinient and can prevent damaging the protective sleeve.