Process for making hot-rolled clad steel sheet

In a process for making clad hot-rolled strip, a steel slab is provided with a coating of a corrosion-resistant material and the resulting composite is then hot-rolled. The invention comprises the following measures: a) the steel slab used is a low-alloy steel (base material) having a carbon content...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SUSSEK, GERD, PIRCHER, HANS, KAWALLA, RUDOLF, WOLPERT, WALDEMAR, WILMS, WALTER
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	In a process for making clad hot-rolled strip, a steel slab is provided with a coating of a corrosion-resistant material and the resulting composite is then hot-rolled. The invention comprises the following measures: a) the steel slab used is a low-alloy steel (base material) having a carbon content of up to 0.25% by weight, b) the coating materials used are stainless, in particular stainless austenitic steels and nickel-based wrought alloys, c) the steel slab and the coating material are mutually joined by explosive cladding, d) the composite body produced is heated to the rolling temperature, e) the composite body heated to the rolling temperature is pre-rolled on a hot-rolling mill with a high reduction per pass of phi > 0.10 to a quarter of the initial thickness and then finish-rolled to the final hot-rolled strip thickness, f) the final rolling temperature being in the region above 900 DEG C.