| 摘要 |
PURPOSE:To enable welding of the ends of a pipe body as it is without collapse in the shape by mounting preliminarily short pipes to be used as the ends of the product pipe body to the inside ends of a mold for centrifugal casting, pouring a molten metal to the inside of the mold and unitizing the adapters and the casting material to one body. CONSTITUTION:Short pipes 2, 2 to be formed integrally with the ends of a casting pipe body 3 are mounted to both inside ends of a metallic mold 1 for centrifugal casting. Bands 4, 4 are attached thereto in contact thereof by means of fixing pins 5. The wall thickness of the short pipes 2 is made equal to or larger than the wall thickness of the body 3. A molten casting material is poured to the inside surface of the mold under rotation, by which the short pipes 2 and the casting material are welded and unitized to one body without collapse in the shape of the ends of the product pipe body after casting. |
