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Creating Polymer Metal Hybrids of Hot Stamped Steel

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Creating Polymer Metal Hybrids of Hot Stamped Steel and Fiber-Reinforced Thermoplastics Using Residual Process Heat

 

Hot stamping constitutes a manufacturing process for both high strength and lightweight automotive structural components and is used to produce some 40 % of today’s structural components in car bodies. Lightweight approaches aim at weight reduction by reducing steel thickness and applying fiber-reinforced plastics (FRP) to regain structural stiffness and strength. Inherent thermal metal processing renders hot stamping an adequate process chain for the manufacturing of hybrid metal polymer composites. Thereby, residual heat in metal parts is used to enhance adhesion between polymer and metal. In fact, the temperature of the parts after hot stamping is in the range of the processing temperatures of several technical polymers, thus providing process conditions suitable for thermal direct joining or activation of adhesion promoters.In this paper, the integration of fusion bonding of thermoplastic FRP in the hot stamping process chain is investigated. Therefore, characteristic process requirements are matched with actual temperature behavior and thus, hybrid specimens are manufactured under realistic industrial conditions. The specimens are tested with respect to shear strength and bending stiffness, resulting in adequate mechanical performance at reduced mass.

 

Author: Michael Demes

 

Conference: SAMPE Seattle 2017

 

SKU/Code: SE17--0537

Pages: 14

 

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