| 摘要 |
PURPOSE:To automate a vacuum sealing job by filling a chemical substance in a metal container through a metal pipe and evacuating the container, then sealing the upper edge of the metal pipe by welding. CONSTITUTION:A chemical substance is filled in a metal container through a metal pipe 1, and a low-melting alloy 9 comprising lead and tin is placed in the upper part of steel 1'. An exhaust pipe 10 is arranged at the upper edge of the metal pipe and a high frequency heating furnace 11 is arranged in the outside of the metal pipe. The container is evacuated through the exhaust pipe 10, and the metal pipe 1 is pressed from the outside with a press to make the steel flat. The alloy 9 is heated with the furnace 11 to form a molten alloy 9'. Thereby, the metal container is vacuum-sealed. The upper part of the metal pipe is pressed, then TIG-welded. |
