Cooling method and cooling equipment of extruded article

摘要

A part of outer circumference of an extruded article that is difficult to be cooled is selectively pre-cooled by a pre-cooler (18) and is cooled by a cooling fan (17) by forcible air-cooling and the temperature of the portion that is difficult to be cooled becomes lower than the other portion, so that the outer circumference is not cooled in an imbalanced manner during subsequent forcible air-cooling process, thereby avoiding bent of the extruded article.