P 1063 – Optimization of the tribological system in the forming of complex iron-manganese parts with TWIP-effect
Steels with highermanganesecontent andwith TWIP-effect feature very favourable properties, especially concerning the mechanical properties and the forming behaviour. Because of these special propertiesthe steel group with highermanganesecontenthas got very attractive for several industrial applications. Due to the high level of strength and very high formability there are potential applications in the non-automotive industry and especially for crash-relevant car body structural components. Modern lightweight concepts can benefit from thesenew steels. The car body mass can be reduced massively by consolidation of structural components. Thus, the fuel consumption can be reduced as well. Furthermore, energy intensive and cost intensive manufacturing processes (e.g. hot stamping) can be substituted by single-step cold forming processes. The objective of this research project aimed onto an optimization of the tribological system in forming operations of steels with highermanganesecontent andwith TWIP-effect. By that, potential manufacturers can use this material and benefit from its favourable properties for the production of geometrical complex components with high strength. An enhancementof the process window in forming operations is necessary. For this, the tribological system has to be analysed and optimized properly. As a fundamental elementof the experimental research work within this project, strip drawing test are conducted. Several test set-ups are used to simulate specific contact conditions and process temperatures. The existing test facilities are modified, especially in order to apply test temperatures similar to the conditions in real serial productionprocesses. Within the test series an influence of the lubrication conditions are determined, which partially differs from conventional steel grades. In further deep drawing test seriesan explicitdependence of the deep drawing properties from the lubricants are validated. In addition, the deep drawing properties can the influenced by the application of a tool cooling. Especially for geometrical complex c.
Only available in german language.
B.-A. Behrens, C. Gaebel, M. Micke-Camus, D. Yilkiran, C. Pfeffer