The furnace bottom roller is an essential processing equipment in the steel plate smelting production process. In order to ensure the requirements of steel plate production, the furnace bottom roller also has high usage requirements. The furnace bottom roller is a typical centrifugal casting pipe fitting, which is one of the important components for supporting and transporting slab in metallurgical equipment. It is widely used in steel plate continuous casting and rolling production lines.
During the rolling process, the steel billet needs to be continuously and stably heated in the heating furnace to a rolling temperature of 1050-1150 ℃. The stable support of the slab is achieved through the furnace bottom rollers to ensure smooth and uniform transportation. Due to the fact that the middle section of the furnace bottom roller is directly installed in the steel billet calcination furnace, the furnace gas temperature can reach around 1150 ℃ during the production process. Therefore, high-temperature alloy materials such as ZG45Cr28Ni48W5Si2 are usually used for manufacturing. At the same time, due to the fact that the material support part in the middle of the furnace bottom roller is directly installed inside the furnace, while the cone section and bearing support part are installed inside the furnace wall and outside the calcination furnace, the temperature gradient of different parts of the furnace bottom roller is large. Therefore, the furnace bottom roller is generally welded together by a cylinder, a cone, and a shaft. In order to reduce the burning damage to the inner surface of the cone, an insulation board is designed on the inside of the cone. To ensure the smooth transportation of high-temperature slab, it is required that the roller shaft does not deform and the outer roller ring is heat-resistant and wear-resistant.
Now that everyone understands the application of furnace bottom rollers in metallurgy, only by understanding their function can they be used better. And in order to ensure the good performance of the furnace bottom rollers and extend their service life, regular inspections and maintenance are necessary.