Introduction to Electric Vehicle Frame Technology

The electric vehicle frame serves as the skeleton of the entire vehicle, and the precision of its craftsmanship directly affects the vehicle's performance and safety. Below is an introduction to the manufacturing process of a typical electric vehicle frame.

Material selection: High-quality aluminum alloy or high-strength steel is used. Aluminum alloy is lightweight and corrosion-resistant, effectively reducing the overall weight of the vehicle and improving the electric vehicle's range; high-strength steel has strength and toughness, ensuring that the frame can withstand various stresses without deformation under complex road conditions.

Pipe processing: Using cutting equipment, the selected pipes are cut according to design dimensions, with cutting precision controlled within a very small range to ensure the accuracy of subsequent welding. The edges of the cut pipes are deburred to prevent injury to personnel during assembly and to ensure the welding surface is flat and smooth.

Welding process: Advanced argon arc welding or laser welding technology is used. Argon arc welding provides a stable welding arc, making the weld seam uniform and strong, effectively avoiding welding defects; laser welding, with its high precision, high speed, and low heat-affected zone characteristics, further enhances welding quality and ensures the structural strength of the frame. The welding process strictly follows process standards, controlling parameters such as welding current, voltage, and speed.

Frame forming: After welding is completed, the frame enters the forming process. Using specialized stamping equipment and molds, key parts of the frame are stamped to enhance their local strength and rigidity. For example, special forming treatments are applied to the head tube and bottom bracket areas of the frame to meet the installation requirements of different components and improve overall stability.

Surface treatment: First, a degreasing treatment is performed to remove oil and impurities from the frame's surface. Next, a phosphating treatment is carried out to form a dense phosphating film on the surface of the frame, enhancing the adhesion of the coating. An electrostatic spraying process is used to spray environmentally friendly powder coating on the frame, which is then cured at high temperatures, giving the frame an attractive and durable exterior coating that not only has good decorative properties but also effectively resists UV rays, rain, and dust, extending the frame's service life.