| 摘要 |
PROBLEM TO BE SOLVED: To provide a low temperature melting furnace and a metal sector using an external cooling passage, in which a limitation to a size of a cross section of the metal sector required to secure a cooling passage within the metal sector is minimized and cooling flow is improved, in a cooling structure for cooling a wall of the low melting furnace comprising a plurality of metal sectors.SOLUTION: A low temperature melting furnace includes a wall including a plurality of metal sectors, each of the metal sectors includes one cooling passage formed along a longitudinal direction thereof, the cooling passage is formed outside the wall, and an extension tube connected to the cooling passage is also provided. |
