| 摘要 |
PROBLEM TO BE SOLVED: To surely remove a lost form pattern with a simple process and constitution, and to prevent the roughness on a cast surface of a cast product as less as possible. SOLUTION: The apparatus is provided with a heating furnace 64 in which a mold structural body 16 is arranged and which has a heating chamber 62 for losing the lost foam pattern 10, and a pressurizing mechanism 66 whis is arranged in the inner part of the mold structural body 16 in the heating chamber 62 and forcibly exhausting decomposed gas generated in the inner part of the mold structural body 16 to the outer part by heating the inner part of this mold structural body 16 when the lost foam pattern 10 is lost. |
