Abstract
Hot stamping ultra-high strength steel not only plays an important role in automotive field, but also has potential application in transmission line fittings industry. According to the current development status of Chinese electrical power fittings and the demand for new technique, combined with hot stamping technology, a new solution for reduction of weight in transmission line fittings has been proposed. This paper focuses on a new lightweight connection fitting with multilayer stack structure of ultra-high strength boron steel, and the key issue in design and manufacturing process of the deep U-shaped hot stamping stacked steel sheet. Numerical simulation method combining the experimental data is also used to predict mechanical performance of the new connection fitting, which provides guidance for the manufacturing process.
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