| 摘要 |
1515549 Regulating temperature of heattreatment melt ARBED-F & G DRAHTWERKE KOLN GmbH 9 July 1975 [25 July 1974] 28943/75 Heading C7N Temperature and stirring of a melt used in heattreating metals is regulated by directly introducing a liquid which evaporates at melt temperature into the lower region of the melt. The liquid may be water; the melt may be NaNO 2 at 450-600 C; it may be used for continuous cooling of steel wire from a rolling mill, the wire being coiled into the melt as a free-falling helix. Steam issuing from the melt may be condensed, used to wash salt from the resulting steel coils, and then reintroduced to the bath, thus returning the salt drag-out. |
