Hot Stamping Dies for Body Structural Parts

Door Intrusion Beam Hot Stamping Die

Door intrusion beams are located inside automotive doors and provide critical protection during side impact collisions. Hebei Haoxinran Machinery produces hot stamping dies for door intrusion beams that meet stringent side impact protection standards while minimizing weight and intrusion into the passenger compartment.

Side Impact Protection Function

Door beams must perform specific functions during a side crash:

• Intrusion Resistance: The beam must resist deformation and limit how far the intruding object penetrates into the door interior and occupant space.

• Load Distribution: Impact energy is distributed across multiple mounting points into the body structure (A-pillar, B-pillar, rocker panel).

• Weight Efficiency: Ultra-high strength steel allows the beam to be lightweight while providing excellent protection.

Door Beam Die Design

Our door beam hot stamping dies are engineered for these slender, high-strength components:

• Curved Profile Forming: Door beams follow the curved shape of the door outer panel, requiring dies that can form complex 3D curves while maintaining section shape.

• End Forming: The beam ends are formed to match the door inner mounting points, often with flanged ends or mounting tabs.

• Consistent Quenching: Even cooling throughout the slender profile ensures uniform martensitic transformation without distortion.

• Trim and Pierce: Secondary or in-die operations trim the ends and punch mounting holes for installation.

Material Specifications

Door intrusion beams are typically made from 22MnB5 boron steel with thickness ranging from 1.2mm to 1.8mm depending on vehicle class and performance requirements. The hot stamping process achieves tensile strengths of approximately 1500MPa, providing exceptional strength-to-weight ratio.

Quality Assurance

We verify:

• Hardness uniformity along the beam length

• Curvature and profile dimensions

• Mounting hole position and orientation

• End geometry for proper fit in door pockets

Haoxinran supplies door beam hot stamping dies for both front and rear door applications. Our compact die designs are optimized for efficient production in standard hot stamping presses.