In today's increasingly competitive automotive industry, the quality of interior parts has become a key battlefield for brand differentiation. From the seamless bonding of the dashboard skin to the precise sealing of the storage compartments on the door panels, the rework rate of traditional processes remains high due to issues such as material deformation and joint glue seepage. High-frequency welding machines, with their molecular-level heating control and intelligent pressure compensation technology, are opening up a "zero-defect" path for automotive interior manufacturing.
Dashboard skin coating: Breaking the curse of "thermal expansion and contraction"
The dashboard of a car needs to integrate a thermoplastic skin and a plastic base material. The traditional hot-melt process often causes the skin to wrinkle or the base material to deform due to temperature fluctuations, while the adhesive process faces the risk of excessive VOCs. The high-frequency welding machine precisely focuses energy on the contact surface between the skin and the substrate through segmented high-frequency heating technology.
Temperature gradient control: The surface layer is heated to 180℃ for softening, while the base material layer is kept below 80℃ to prevent deformation.
Pressure adaptive system: The pressure is adjusted in real time according to the material thickness (5-30 tons) to ensure a bonding accuracy of 0.1mm.
Environmental protection breakthrough: No glue throughout the process, formaldehyde emission is less than 0.05mg/m&sup ³. It far exceeds the national standard requirements.
Data from the production line of a certain German car manufacturer shows that after adopting the high-frequency process, the defect rate of the dashboard skin has dropped from 9% to 0.5%, saving over 5 million yuan in rework costs annually.