Method for manufacturing press hardened components

• Main Authors: ROSTEK, WILFRIED, POHL, MARTIN, WIBBEKE, MICHAEL
• Format: Patent
• Language: English; French; German
• Published: 02.05.2012
• Subjects: 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; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The method for the production of car body component of a motor vehicle from a plate made of untempered, heat formable steel plate, comprises forming and hardening the plate in a press tool to sheet-metal profile. The plate is provided, whose geometry corresponds to the development of the finished component and subsequently the plate is remodeled and press-hardened in a hot working tool to component, which is provided with a surface coating. The component is cooled during press-hardening at 200[deg] C. The surface coating is applied through a diffusion process. The method for the production of car body component of a motor vehicle from a plate made of untempered, heat formable steel plate, comprises forming and hardening the plate in a press tool to sheet-metal profile. The plate is provided, whose geometry corresponds to the development of the finished component and subsequently the plate is remodeled and press-hardened in a hot working tool to component, which is provided with a surface coating. The component is cooled during press-hardening at 200[deg] C. The surface coating is applied through a diffusion process with a heat treatment of the component in which the component is applied in contact with a metal powder. The diffusion process is carried out at 350-410[deg] C and the heat treatment is carried out over a period of 0.25-3.0 h. The coated component is cooled after the heat treatment at 200[deg] C. The cooling of the component is carried out under inert-gas atmosphere. The plate is perforated before or after the forming process. The press-hardening is carried out so that the areas emerge with different stabilities on the component.