Metal Deep Drawing Dies, Metal Punching, Drawing Process

Engine Hood Outer Panel Stamping Process Optimization

A car manufacturing company encountered wrinkling and edge tearing problems in the production of engine hood outer panels, resulting in a high scrap rate and low production efficiency. Through optimization of the stamping process parameters, firstly, comprehensive mechanical property testing and metallographic analysis of the material were conducted to determine key performance indicators such as yield strength, tensile strength, and elongation. Then, finite element simulation software was used to numerically simulate the stamping process, analyzing the stress-strain distribution of the material under different process parameters and identifying the main causes of wrinkling and tearing. Based on this, a series of experimental schemes were designed to optimize the combination of parameters such as stamping force, blank holder force, stamping speed, and die clearance. After multiple experiments and data analysis, a set of optimal process parameters was finally determined. After applying the optimized process parameters, the scrap rate of the engine hood outer panel decreased from [X]% to below [X]%, production efficiency increased by [X]%, and product quality was significantly improved, meeting the high-quality requirements of the car OEM for the engine hood outer panel.

Improvement of Stamping Process for Electronic Product Casings

An electronics manufacturer faced severe surface scratches and dimensional inaccuracies when producing casings for a certain model of mobile phone, significantly impacting the product's appearance quality and assembly performance. To address these issues, technicians conducted in-depth research and optimization of the stamping process parameters. They discovered that the original stamping speed was too high, leading to increased friction between the die and the material, resulting in scratches; simultaneously, insufficient blank holder force caused unstable material flow during deep drawing, making dimensional accuracy difficult to control. To solve these problems, the technicians reduced the stamping speed and increased the blank holder force. Furthermore, the die surface was polished to reduce the coefficient of friction. After implementing these optimization measures, the surface quality of the mobile phone casing was significantly improved, scratch defects were greatly reduced, and dimensional accuracy was improved by more than [X] times, effectively enhancing the product's market competitiveness.