| 摘要 |
1394200 Continuous metal heating furnaces ALLEGHENY LUDLUM INDUSTRIES Inc 15 Sept 1972 [17 Sept 1971] 27141/74 Divided out of 1394197 Heading F4B The subject-matter of this Specification is substantially the same as that disclosed in Specification 1,394,197, but the claims are concerned with apparatus for heat treating strip material in coil form comprising an elongated furnace structure, means for dividing said furnace structure into a plurality of independently controllable heating and cooling zones, means for supporting and advancing coils through said furnace structure, means for circulating a non-oxidizing gas through said furnace structure, a sealable chamber at the entrance end of said furnace structure, means for generating heat within said sealable chamber and means for evacuating said sealable chamber while a coil of strip material is heated therein. |
