Abstract: In a belt cleaner 10 having a plurality of bar-like rubber elastic bodies 20 each having a rectangular cross section and provided in line in a groove 40a of a stand 40 installed in a width direction of a returning-side belt 30 one of springs 22 is provided to a fixed-side end 20a of each of the bar-like rubber elastic bodies 20 through a corresponding one of fixing axes 21, one of screws 62 is provided to each of flanges 44 provided to each end of the stand 40, one of thrust bolts 60 is rotatably attached to each of the screws 62, and the bar-like rubber elastic bodies 20 provided in line are retained in a horizontal direction in a state of being vertically pressed by the springs 22 at an adequate pressure by means of the thrust bolts 60 threaded into the screws 62.

Abstract: A grinding method is provided in which abrasive is projected onto a steel product through a nozzle to perform grinding thereon such as in a continuous casting process or in a subsequent process, wherein high-pressure water jet mixed with the abrasive is projected onto the surface of the steel product to grind defects on the surface, etc. thereof. A grinding system for executing this grinding method is also provided, the system including supply sources of high-pressure liquid and abrasive, a nozzle device connected with these supply sources, an abrasive recovery device for recovering the used abrasive as needed and restoring the same to the supply sources, and combined detection systems.

Abstract: A continuous caster mold has a water-cooled inner wall of copper or a copper alloy that is thoroughly covered with pieces of ceramics. A continuous casting process, which uses a mold whose inner wall of copper or a copper alloy is lined with ceramics having resistance to wear, heat and thermal shock, heat conductivity and lubricating property, with the thickness of the ceramics lining varied either stepwise or continuously in the casting direction. The molten metal, which progressively solidifies as its heat is extracted, is withdrawn by taking advantage of the solid lubrication provided by the ceramics lining. The thickness of the lining is varied to prevent the formation of air gaps between the surface of the lining and the solidifying shell and cool the steel being cast according to the desired pattern, and/or to start solidification of the molten metal below the molten metal surface level.