wanhaorefractory

  1. Loose Wall The looseness of the tundish wall is mainly reflected in the contact position between the tundish wall and the bottom of the tundish. The looseness of the wall is manifested in two forms: one is that it extends longitudinally from the position of the wall to form an irregular surface; The other is that the elongated powder falls down to form a "slit shape". There are two reasons for the looseness: one is that the binder volatilizes, resulting in a decrease in the overall bonding strength, especially the outermost one; the other is that the fine powder containing resin does not wrap the particles, which eventually causes slag to fall off easily. The low-temperature baking strength and medium-temperature strength of the dry-type material can be better improved by mixing boron glass powder and phenolic resin in the magnesium dry-type material . Based on the site conditions, it was found that the reasons for the low quality of the tundish re...

  1. Loose Wall The looseness of the tundish wall is mainly reflected in the contact position between the tundish wall and the bottom of the tundish. The looseness of the wall is manifested in two forms: one is that it extends longitudinally from the position of the wall to form an irregular surface; The other is that the elongated powder falls down to form a "slit shape". There are two reasons for the looseness: one is that the binder volatilizes, resulting in a decrease in the overall bonding strength, especially the outermost one; the other is that the fine powder containing resin does not wrap the particles, which eventually causes slag to fall off easily. The low-temperature baking strength and medium-temperature strength of the dry-type material can be better improved by mixing boron glass powder and phenolic resin in the magnesium dry-type material . Based on the site conditions, it was found that the reasons for the low quality of the tundish repair wer...