| 摘要 |
PURPOSE:To quickly discharge gas produced with the combustion of a consumable pattern from a mold to an external part. CONSTITUTION:A box type space chamber 4 is provided on the lower part of a box type molding flask 1 opened at the upper part and formed so that a pair of the faced side walls 5 is opened. A gas venting body 6 communicated with the space chamber 4 is erected at the bottom face of a molding flask main body 1. The gas produced with the combustion of the consumable pattern 3 is discharged to the external part from the upper opening part in the molding flask body 1 and also discharged to the external part from the space chamber 4 through the gas venting body 6. |
