| 摘要 |
PURPOSE:To absorb thermal expansion in order to remove thermal stress to refractory pipes thereby to protect said pipe by putting a refractory cushion material by compressing said material appropriately between end parts connecting the refractory pipes for an electromagnetic pump and the refractory pipe for forming a molten metal path connected to said pipe. CONSTITUTION:In case an electromagnetic pump 4 is installed midway a molten metal flowing path that is impossible to be displaced, thermal resistant cushion materials 4b1, 4b2 are placed between the end surface of a refractory pipe 4a of an electromagnetic pump 4 and the resistant surfaces 2a, 3a of molten metal paths 2, 3 facing to said end surface and being connected therewith. At this juncture, the cushion materials 4b1-4b2 are placed, being compressed, without causing molten metal leakage and within the range where the cushion property is not lost. Further, if water cooling pipes M1-M2 are arranged around the cushion materials 4b1, 4b2, even if molten metal leaks, it is hardened and metal leakage exceeding said leakage can be prevented. |
