Method and installation for the manufacture of metal strips on the basis of strips coulees directly from liquid metal

摘要

Process for trimming the edges (9, 9') of a thin metal strip (6), cast directly from molten steel (4), involves controlled cooling of the edges before trimming to make the edge zones more brittle than the remaining strip metal. Edge cooling starts at 950-1100 deg C, and edge trimming cutters (15,15') act directly after the cooling stage and before the strip is wound into a roll. Preferred Features: Edge cooling action is performed after hot rolling, where the strip has been heated by an induction heating system, or directly in-line after casting. Edge cooling action is applied by bars (10, 10') with spray jets which direct streams of a coolant fluid at the strip edges.