Deep drawing of high-strength tailored blanks by using tailored tools

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

In most forming processes based on tailored blanks, the tool material remains the same as that of sheet metal blanks without tailored properties. A novel concept of lightweight construction for deep drawing tools is presented in this work to improve the forming behavior of tailored blanks. The investigations presented here deal with the forming of tailored blanks of dissimilar strengths using tailored dies made of two different materials. In the area of the steel blank with higher strength, typical tool steel is used. In the area of the low-strength steel, a hybrid tool made out of a polymer and a fiber-reinforced surface replaces the steel half. Cylindrical cups of DP600/HX300LAD are formed and analyzed regarding their formability. The use of two different halves of tool materials shows improved blank thickness distribution, weld-line movement and pressure distribution compared to the use of two steel halves. An improvement in strain distribution is also observed by the inclusion of springs in the polymer side of tools, which is implemented to control the material flow in the die. Furthermore, a reduction in tool weight of approximately 75%can be achieved by using this technique. An accurate finite element modeling strategy is developed to analyze the problem numerically and is verified experimentally for the cylindrical cup. This strategy is then applied to investigate the thickness distribution and weld-line movement for a complex geometry, and its transferability is validated. The inclusion of springs in the hybrid tool leads to better material flow, which results in reduction of weld-line movement by around 60%, leading to more uniform thickness distribution.

Original languageEnglish
Article number77
JournalMaterials
Volume9
Issue number2
Number of pages14
ISSN1996-1944
DOIs
Publication statusPublished - 02.2016
Externally publishedYes

    Research areas

  • High strength steels, Hybrid deep drawing tools, Tailored blanks, Tailored tools
  • Engineering

DOI

Recently viewed

Researchers

  1. Thomas Petzel

Publications

  1. Joint calibration of Machine Vision subsystems for robuster surrounding 3D perception
  2. The influence of the casting process on the creep properties of different AZ-based magnesium alloys
  3. Mobilität
  4. Towards a Model for Building Trust and Acceptance of Artificial Intelligence Aided Medical Assessment Systems
  5. Do You Like What You (Can't) See? The Differential Effects of Hardware and Software Upgrades on High-Tech Product Evaluations
  6. Current Trends in Environmental Cost Accounting - and its Interaction with Eco-Efficiency Performance Measurement and Indicators
  7. Extrinsic Calibration Method under Low-Light Conditions for Hybrid Vision System
  8. Index und Irritation
  9. Collaborative Information Systems zur Selbstorganisation von ad-hoc-Helfern
  10. Model predictive control of an electromagnetic actuator fed by multilevel PWM inverter
  11. Modelling of a servo piezo mechanical hydraulic actuator and its feed-forward control
  12. Efficacy of cognitive bias modification interventions in anxiety and depression
  13. Editors’ Introduction
  14. Die coatings influence evaluation and friction model selection in aluminium extrusion by means of visioplasticity technique
  15. Answers to seven questions
  16. Optimisation of root traits to provide enhanced ecosystem services in agricultural systems
  17. Cross-cultural differences in consumers' perception of the credibility of cause-related marketing (CRM) campaigns
  18. Entangled Identities
  19. Conceptual approaches in the prevention of child overweight in Germany—the research project ‘Systematization of Conceptual Approaches’ (SCAP)
  20. Theories of democratization
  21. Neue deutsche Härte