北京low iron mold bottom brick

The refractory materials used for the bottom brick of low iron mould must be baked. Before use, the quality of various brick types shall be checked. If there are scabs, cracks, looseness and deformation, it is necessary to replace them, and check whether there is any foreign matter in the inner hole of the brick, whether the interface is consistent, etc. The iron wire must be reinforced for the middle column pipe brick to prevent the quality accident caused by the bursting of the middle column pipe when pouring steel and the quartz sand rushing into the steel ingot. The mold slag must be baked, otherwise, the quality of the steel ingot will be affected by the damp, which is not conducive to the effective feeding of the cap mouth.