HOT METALLIC BILLET TRANSFER ROLL

• Main Authors: KANDA KATSUNORI, KUROKI TAKANORI, KASHIWAMURA HIDEHIRO, HONDA TSUGUO, KUROKI HIRONORI
• Format: Patent
• Language: English
• Published: 25.11.1986
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; POWDER METALLURGY; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

PURPOSE:To prevent the growth and propagation of a corner crack by inscribing line grooves having the prescribed angle of inclination with the axial center of a hot metallic billet transfer roll at prescribed intervals on the build-up welded surface of said roll and forming the line grooves in such a manner that the grooves do not intersect orthogonally with the build-up beads. CONSTITUTION:The line grooves 2 having the angle of inclination within 60 deg. with the axial center direction of the roll are inscribed at the required intervals on the surface of the roll body 1 on which the build-up weld layer is formed after the thorough removal of surface cracks. These grooves 2 are so formed as not to intersect orthogonally with the build-up beads. The grooves 2 are parted to plural pieces in the longitudinal direction if necessary and are disposed by shifting alternately the adjacent lines 2 in the circumferential position. A packing consisting of a plate material, wire material, powder, etc. is packed into the grooves 2. The growth and propagation of the corner crack starting from the line grooves of the hot metallic billet transfer roll are thus prevented.