B PERFORMING OPERATIONS; TRANSPORTING
B22 CASTING; POWDER METALLURGY
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
15/00 Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
B22D15/02 of cylinders, pistons, bearing shells or like thin-walled objects