Producing Large-Scale Aluminum Profiles for Rail Transit

2026-06-23 09:33:32

Rail transit is undergoing a global renaissance, with countries investing billions in high-speed rail, subway, and light rail systems. Aluminum has become the material of choice for modern train bodies, offering a 30-40% weight reduction compared to steel that translates to significant energy savings and improved performance. However, producing the large, complex aluminum profiles used in rail transit presents unique manufacturing challenges.

Traditional extrusion equipment struggles to handle these large, heavy profiles. Inadequate traction can cause slippage and surface damage, while insufficient cooling leads to warping and distortion. Inaccurate cutting results in poor fit during welding, increasing assembly time and costs.

Tongzheng's 7500T Heavy-Duty Three-Head Double-Rail Puller is specifically designed to handle the largest and most complex rail transit profiles. The puller's robust construction and high-traction grip ensure stable, consistent transport of profiles weighing up to 2000kg. The TZJX Servo System provides precise speed control, maintaining perfect synchronization with the extrusion press to prevent stretching or distortion.

Our Extra-Long Aluminum Extrusion Cooling Table can be custom-built to lengths of 30 meters or more, providing sufficient cooling time for large rail transit profiles. The table's heavy-duty construction and reinforced rollers easily support the weight of these massive profiles without sagging or deflection. The multi-zone cooling system ensures uniform cooling along the entire length of the profile, preventing warping and ensuring consistent mechanical properties.

Completing the solution, our Single Billet Sawing and Stacking System features a heavy-duty saw spindle that delivers clean, precise cuts through even the thickest rail transit profiles. The Full-Servo Stacking Manipulator gently handles the long profiles, preventing damage during stacking and transport.

One leading rail transit aluminum manufacturer reported that after upgrading to Tongzheng equipment, they were able to produce 25-meter long profiles with a straightness error of less than 0.5mm per meter. This significantly reduced assembly time and improved the overall quality of their train bodies.

As rail transit continues to expand worldwide, manufacturers need equipment that can produce the large, high-quality profiles required for modern train design. Tongzheng's solutions provide the strength, precision, and reliability needed to meet these demanding requirements.