PREPARING METHOD FOR A BULK METALLIC GLASS ROD BY VACUUM CENTRIFUGAL CASTING, CAPABLE OF OBTAINING AN ENOUGH COOLING SPEED NECESSARY FOR AMORPHOUS FORMATION

摘要

PURPOSE: A preparing method for a bulk metallic glass rod by vacuum centrifugal casting is provided to position a can consisting of multiple coppers within a mold, to implement centrifugal casting simultaneously by flowing molten metal inside of the can, and to manufacture a rod which has less bubbles or deformity by making a minute hall in a copper can.;CONSTITUTION: A preparing method for a bulk metallic glass rod by vacuum centrifugal casting comprises the following steps: A Cu can is charged within a mold(300) which comprises an upper mold and a lower mold; The mold is heated at 170 deg. C to 230 deg. C under a vacuum atmosphere; A dissolved material is injected into an injection space of a mold center with rotating the mold at a predetermined RPM(Revolutions Per Minute) in order to apply a centrifugal force at 70G to 100G; A rod is centrifugal casted within the Cu can by inflowing molten metal, which is supplied by a centrifugal force to the injection space, in the Cu can which is charged within the mold; The Cu can is melted with an acid and the rod is taken out after cooling is finished; An exhaust hole is formed on an end of the Cu can.;COPYRIGHT KIPO 2013