The automotive seat frame is the core safety component, required to withstand tons of impact during collisions while meeting lightweight and precision assembly standards. In automotive clusters, precision stamping die lines for seat frames run at high speed for million-unit orders. With automation comparable to welding workshops, equipment capable of large-tonnage, high-precision processing is in constant short supply.

During mass production, precision dies utilize a "two-cavity-per-mold" design. This completes blanking, punching, flanging, and sizing in a single cycle, reducing production time to 3 days per batch and increasing material utilization to over 90%. As the seat's "load-bearing core," the frame must achieve ±0.02mm precision using 2.0mm high-strength steel, with welding surfaces requiring Ra1.6μm roughness to ensure precise assembly with rails and seatbacks.
For die design, SKD11 steel is used for working components to address high hardness and springback. It achieves HRC60+ hardness, with wear resistance three times higher than standard steels. Die clearance is strictly controlled at 8%-10% of material thickness. The die adopts a dual guiding structure with nitrogen spring devices, ensuring ±0.02mm positioning accuracy. For example, Industrial Man Company’s "two-cavity" die optimizes flanging rib design to control height within 5mm, improving precision by 25% over industry standards.

In the process, blanks undergo "blanking → punching → flanging → sizing". The blanking process uses a "stepped punch" to distribute force, preventing cracks. The flanging process uses an "angled wedge mechanism," controlling corner radii within 0.3mm for precise rail fitting. Stamped frames undergo barrel polishing and electrophoretic coating, passing coordinate measuring machine inspections and crash tests to meet "zero-defect" requirements.
In supply chain selection, criteria have shifted to "full-process chain integration." Small factories, limited by equipment precision, often cannot machine SKD11 steel accurately, resulting in burrs or deviations.

Yong'en Company possesses full-process capabilities including "SKD11 design + multi-station stamping + polishing + coating". We provide one-stop services from development to mass production. Equipped with high-precision machining centers and slow-wire EDM machines, we achieve nanometer-level processing. Our automated lines and dust-free workshops ensure surface quality and consistency. For seat frames or precision metal parts, contact us for professional solutions.