The global electric vehicle (EV) market is growing at an unprecedented rate, with battery trays emerging as one of the most critical and technically demanding components. These large, complex aluminum structures must support 500-700kg battery packs while meeting strict requirements for dimensional accuracy, crashworthiness, and corrosion resistance. Even the smallest defect can compromise vehicle safety and lead to costly recalls.
Traditional extrusion equipment struggles to meet these challenges. Vibration marks from pullers can create stress concentrations that weaken the structure, while uneven cooling causes warping that prevents proper sealing. Inaccurate cutting leads to poor fit during assembly, and surface scratches can accelerate corrosion over time. For many manufacturers, these issues result in scrap rates of 15-20% and production bottlenecks that delay deliveries to automotive OEMs.
Tongzheng's integrated extrusion auxiliary solutions address these pain points head-on. Our
2000T-7500T Three-Head Double-Rail Puller delivers vibration-free continuous traction, eliminating the handover marks that plague traditional double-head systems. This ensures perfectly smooth surfaces free of stress concentrations, critical for meeting crash safety standards. The puller's TZJX Servo System provides position accuracy down to ±0.1mm, maintaining precise control over even the widest battery tray profiles (up to 1200mm).
Our
Aluminum Extrusion Cooling Table features a strategically designed air distribution system that delivers uniform cooling across the entire profile width. This prevents differential contraction and warping, ensuring that battery trays maintain their dimensional accuracy even after welding and assembly. The table's precision-machined, non-marking rollers protect the soft aluminum surface from scratches, preserving the corrosion resistance of the final product.
Completing the solution, our
Single Billet Sawing and Stacking System delivers clean, square cuts with perfect verticality. The intelligent anti-jamming feed control automatically adjusts cutting speed based on alloy hardness, ensuring consistent quality even when processing high-strength 6061-T6 and 6082-T6 alloys commonly used in battery trays.
The results are transformative. One leading EV component manufacturer reported that after upgrading to Tongzheng equipment, their battery tray scrap rate dropped from 18% to just 2%, while production output increased by 32%. This allowed them to meet growing demand from automotive OEMs while significantly reducing production costs.
As the EV market continues to expand, manufacturers need reliable, high-precision equipment to stay competitive. Tongzheng's solutions provide the accuracy, consistency, and efficiency required to produce the highest quality battery trays at scale.
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