公开(公告)号：JPH0910919A

公开(公告)日：1997-01-14

申请号：JP15256796

申请日：1996-06-13

Applicant: ABB RESEARCH LTD

Inventor： EDOBUARUDO ERU KATSUTSU ,  MAKUSHIMU KONTAA ,  YOOAHIMU RESURAA ,  URADEIMIRU PE RUBENETSUTSU

IPC: F01D5/12 ,  B22D23/00 ,  B22D27/04 ,  C22C19/03

Abstract: PROBLEM TO BE SOLVED: To manufacture a casting free from flex and slivers by additionally cooling a casting die below a buffle by the gas flow from the outside. SOLUTION: A casting die 12 is open at the upper end, and filled with the molten alloy 15 through a filling device 14 guided from a crucible 6 to a heating chamber 4. The alloy is kept at the temperature higher than the melting temperature by a heating element in the heating chamber 4. The molten alloy 15 in the casting die 12 is guided from the heating chamber 4 into a cooling chamber 5 partitioned by a buffle 3 provided with openings. A casting 20 is manufacture in a vacuum chamber 2 by the directional solidification. The casting die 12 is cooled from the outside using the gas flow 9 through a nozzle 8 in the cooling chamber 5 below the buffle 3. The casting can be actually formed without any splitter even when the structure is complicated.