Evaluation of the flange stretching capability of a 780 MPa class multiphase advanced high strength steel
Henrique Severiano de Jesus; Fernando Generoso Neiva Ferreira; Jetson Lemos Ferreira; James Mohallem; Wagner Monteiro de Souza; Rinaldo Henrique Pedrini; André Itman Filho
Abstract
Advanced High Strength Steels or AHSS (Advanced High Strength Steels) have superior properties to conventional steel are widely used in the automotive industry, they provide weight reduction and at the same time, increase vehicle safety in the event of collisions. Flangeability is an essential element for forming automotive components such as chassis and suspension components. Research is ongoing into the development of forming techniques that can improve the performance of AHSS during industrial operations, particularly flange drawing. Therefore, there is great interest in investigating the extensibility of the pre-cut cutting edge and determining the factors that significantly influence the formability of the product. The test used to evaluate flangeability is the Hole Expansion Ratio (HER). In this research, the objective was to evaluate the influence of the conditions of four edge cutting methods on the hole expansion test of advanced multiphase high-strength steel class 780 MPa through four methods: Machining, LASER and punching with expansion of the hole in the direction of the punch (burr downwards) and in the opposite direction (burr upwards). The results of this study corroborate
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Referências
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Submetido em:
27/09/2023
Aceito em:
03/05/2024
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