Steel component provided with coating

• Main Authors: KOYER MARIA, RUTHENBERG MANUELA
• Format: Patent
• Language: Chinese; English
• Published: 07.01.2022
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a method for producing a steel component by forming a flat steel product coated with an anti-corrosion coating and to a steel component produced from a steel substrate coated with an anti-corrosion coating. The steel component is produced by: providing a flat steel product coated with an aluminum-based anti-corrosion layer; heat-treating a slab consisting of the coated flat steel product in a furnace, wherein 0.0034 DEG C/min < = Q < = 0.021 DEG C/min, Q = (T * d)/(t * L), T = furnace temperature (DEG C), d = slab thickness (mm), t = residence time (min) of the slab in the furnace, L = furnace length (m); and shaping the slab in a shaping tool. The steel component comprises a steel substrate and an anti-corrosion layer on at least one face of the steel substrate, the anti-corrosion layer comprising at least a first and a second silicon-rich layer (Si1, Si2) and a first and a second silicon-dilute layer (A, B), the ratio X of the thickness (dB) of the second silicon-dilute layer (B) in