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Oxide Scale On Steel. The scale formed remains intact on the strip surface since the strip is usually not descaled before coiling. Introduction During hot rolling steel is oxidized and a scale of iron oxides forms on the surface. Scale formation during hot rolling cannot be avoided completely. This is called blistering.
The research reported here concerns the behaviour of perhaps the most complicated oxide scale namely that on steels undergoing hot rolling. Introduction During hot rolling steel is oxidized and a scale of iron oxides forms on the surface. The initial oxide scale after rolling and cooling on the run-out table had a three-layer hematite magnetite and wustite structure. Therefore the mechanical properties of the oxide scale in high carbon steel change greatly com pared with that in low carbon steel 3. The failure of oxide scales on ferritic stainless steels STSs has been known to cause an unexpected and severe sticking problem during the hot-rolling process. The oxide scale separates T91 steel from LBE which inhibits the dissolution of matrix elements and weakens the effect of LBE on the mechanical properties of T91 steel.
The rate of scale.
The part of the scale closest to the steel surface is dominated by wustite FeO the middle part is dominated by magnetite Fe 3 O 4 and the outermost part is dominated by hematite Fe 2 O 3. 23 November 2017 Düsseldorf. During annealing of steel a mill scale is formed on the steel surface which consists of three types of iron oxides. NIPPON STEEL SUMITOMO METAL TECHNICAL REPORT No. The oxide scale separates T91 steel from LBE which inhibits the dissolution of matrix elements and weakens the effect of LBE on the mechanical properties of T91 steel. The scale formed remains intact on the strip surface since the strip is usually not descaled before coiling.