Custom Car Chassis Mounting Brackets, Transmission And Engine Skid Plate Mounting Brackets, Body Reinforcement Mounting Plates, Stamped Parts, Molds.

Stamping is a core process in the mass production of structural components for new energy vehicles. The accuracy of the coordinated matching of process parameters directly determines the consistency of component forming, dimensional accuracy, surface quality, and mold service life. Under the mass production demands of thinner-walled, more complex, and higher-precision new energy components, meeting the standards of a single parameter is no longer sufficient; dynamic coupling and matching of multiple parameters is the key to stable mass production. Frequent problems encountered on-site, such as wrinkling, cracking, excessive springback, large burrs, and batch dimensional fluctuations, are superficially process defects, but are fundamentally caused by imbalances in the matching of multi-dimensional process parameters. Therefore, deeply exploring the underlying causes of imbalanced stamping process parameters has significant engineering practical value for optimizing the stamping process system, reducing defect rates, and improving mass production stability.

The stamping forming system is a nonlinear coupled system composed of multiple factors, including forming pressure, die clearance, stamping speed, lubrication conditions, sheet metal properties, and die condition. These parameters do not act independently but are mutually restrictive and interrelated. Currently, parameter tuning in the industry often suffers from the misconception of single-point optimization and isolated parameter adjustment. The core problem lies in neglecting the dynamic and synergistic logic of the parameter system. On-site tuning often focuses on adjusting single parameters for a single defect, blindly increasing forming pressure to solve cracking, or arbitrarily enlarging die clearance to eliminate burrs, without simultaneously matching related parameters such as stamping speed, blank holder force, and lubrication conditions. This one-dimensional, experience-based tuning approach can only temporarily solve surface problems but disrupts the overall balance of the process system, easily leading to new forming defects. This is also the core reason for recurring quality issues and incomplete problem eradication in mass production.

The dynamic fluctuation of sheet metal properties is the core source of persistent imbalances in process parameter matching. New energy structural components widely use ultra-high-strength steel, aerospace aluminum alloys, and composite lightweight sheets. Compared to traditional low-carbon steel, these materials exhibit greater dispersion in mechanical properties. Even with the same grade and specification of raw materials, different smelting batches, rolling processes, and storage environments can lead to subtle differences in the sheet's yield strength, tensile strength, elongation, and thickness uniformity. At present, most production systems adopt fixed process parameters for mass production and have not established a linkage mechanism for raw material property sampling inspection, data feedback, and parameter adaptive adjustment. The process parameters are always set according to the standard material state, which cannot adapt to the real-time fluctuation of the material properties of the board. This results in a mismatch between the material rheological behavior and the process parameters, leading to systemic quality problems such as uneven molding stress, springback fluctuations, and excessive wall thickness reduction.