Method and installation for producing hot-rolled strip from austenitic stainless steels
AssigneeSMS Siemag Aktiengesellschaft
InventorsIngo Schuster, Manfred Albedyhl
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AssigneeSMS Siemag Aktiengesellschaft
InventorsIngo Schuster, Manfred Albedyhl
Estimating the term…
A method for producing hot-rolled strip from austenitic stainless steels. In a first step, a cast product is subjected to a rolling operation in a rolling mill with a finishing train, and, in a second step, a heat treatment is carried out to prevent susceptibility to corrosion, especially intergranular corrosion due to chromium carbide precipitation. To establish the final rolling temperature (Twe), a run-in temperature (Tein) of the cast product into the finishing train of the rolling mill that is above 1,150° C., and preferably above 1,200° C., is established by a multistage heating process, especially a two-stage heating process, which comprises a preheating stage and an intensive heating stage, and the heat treatment is carried out by directly utilizing the rolling heat.
Method for producing hot-rolled strip from austenitic stainless steels, in which, in a first step, a cast product (6) is subjected to a rolling operation in a rolling mill with a finishing train and, in a second step, a heat treatment is carried out to prevent susceptibility to corrosion, especially intergranular corrosion due to chromium carbide precipitation, wherein, to establish the final rolling temperature (Twe), a run-in temperature (Tein) of the cast product into the finishing train of the rolling mill that is above 1,150° C. is established by a multistage heating process, which comprises a preheating stage and an intensive heating stage, and the heat treatment is carried out by directly using substantially only the rolling heat, the method further including descaling the cast product after the preheating stage and before the intensive heating stage, wherein the descaling is the only process carried out between the preheating stage and the intensive heating stage.
Dependencies are inferred from the claim text.