Patent ID: 8661971
Filing Date: 2014-03-04
Classification: B30B,Y10S

Abstract:
1. A method of manufacturing a compressed lump of metal scrap, comprising: a step of charging metal scrap into a compression chamber; a step of closing a cover using a cover cylinder and performing a locking operation; a primary compression step of primarily compressing the metal scrap charged in the compression chamber using a primary compression cylinder; a secondary compression step of secondarily compressing the primarily compressed metal scrap using a secondary compression cylinder; a discharge step of discharging a compressed lump of metal scrap, compressed with target density through the secondary compression, through a discharge port, wherein the method of manufacturing the compressed lump of metal scrap further comprises: a space occupation step of installing a core in the middle of a secondary compression space to occupy a region of the secondary compression space where a through hole is to be formed before the primary compression step is carried out; a through hole forming step of maintaining the region of the secondary compression space occupied by the core to form a through hole in a compressed lump of metal scrap while performing secondary compression using a secondary compression cylinder after the primary compression is completed; and a core retreating step of retreating the core to discharge the compressed lump of metal scrap, compressed with target density, after the through hole is formed in the compressed lump of metal scrap.