Method for manufacturing a press hardened formed component made of sheet steel

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This patent describes a method for manufacturing press-hardened steel components where a steel sheet is first uniformly preheated to a moderate temperature, then selected areas are rapidly heated to a higher temperature before forming and hardening in a press. This approach allows the final component to have regions of different mechanical properties, such as high strength and high ductility, tailored to specific needs, especially useful for automotive parts.

Use CasesContent extracted from patent full text and abstract with AI.

• Production of automotive structural components such as bumpers, pillars, and side impact beams that require both strength and ductility in different regions.
• Manufacture of safety-related parts in vehicles that must absorb impact energy in some areas while maintaining structural integrity in others.
• Creation of industrial machine parts or housings where localized strengthening is necessary for wear resistance while maintaining formability in other sections.
• Fabrication of custom steel components for construction or heavy equipment where performance requirements vary within a single part.

BenefitsContent extracted from patent full text and abstract with AI.

• Reduces the overall energy and time required for manufacturing by preheating only to necessary temperatures and locally applying higher heat where needed.
• Enables the production of complex components with tailored regions of high strength and ductility in a single process, improving crash performance and safety in automotive applications.
• Allows for the use of coated steels (e.g., aluminum-silicon coatings) without causing coating damage, thus preserving corrosion resistance and weldability.
• Increases manufacturing efficiency, throughput, and cost-effectiveness by simplifying processing steps and reducing cycle times compared to traditional methods.
• Provides flexibility in component design, allowing manufacturers to optimize thickness, weight, and mechanical properties to meet stringent engineering requirements.

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Patent Abstract

The method involves homogeneously heating a circuit board at temperature from 450[deg] c to 700[deg] c. The circuit board is heated at high temperature up to 900[deg] c for certain period. The circuit board is transformed in press tools so that to form the molding element with partially high strength and ductility. The circuit board is cured after transformation. An independent claim is included for a device for producing press-hardened mold element from steel sheet.