Increasing performance of Hot Stamping systems

Palm, Christian; Vollmer, Robert; Aspacher, Jens; Gharbi, Mohammad M.

doi:10.1016/j.proeng.2017.10.826

Cited by 10 publications

(8 citation statements)

References 7 publications

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“…The heat transfer coefficient is increased, resulting in a shorter stamping time and leading to higher productivity. Vollmer et al [32] and Palm et al [33] experimentally studied the effectiveness of the PCH cushion, demonstrating an increase in productivity from 2-3 strokes per min (spm) with conventional hot stamping equipment to almost 7-8 spm with the cushion. Figure 3b illustrates an attempt to increase the contact area of heat transfer for blanks by direct injection of water into the inevitable gap between the blank and the die during stamping to avoid poor heat transfer.…”

Section: Advanced Stamping and Die Quenching Technologiesmentioning

confidence: 99%

New Developments and Future Trends in Low-Temperature Hot Stamping Technologies: A Review

Tong

Rong

Yardley

et al. 2020

Metals

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Improvement of the hot stamping process is important for reducing processing costs and improving the productivity and tensile properties of final components. One major approach to this has been to conduct all or part of the process at lower temperatures. The present paper reviews the state of the art of hot stamping techniques and their applications, considering the following aspects: (1) conventional hot stamping and its advanced developments; (2) warm stamping approaches in which complete austenitisation is not attained during heating; (3) hot stamping with a lower forming temperature, i.e., low-temperature hot stamping (LTHS); (4) advanced medium-Mn steels with lower austenitisation temperatures and their applicability in LTHS. Prospects for the further development of LTHS technology and the work required to achieve this are discussed.

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Section: Advanced Stamping and Die Quenching Technologiesmentioning

confidence: 99%

New Developments and Future Trends in Low-Temperature Hot Stamping Technologies: A Review

Tong

Rong

Yardley

et al. 2020

Metals

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“…Driven by such change, numerous aeronautical component producers have been exploring the use of automotive-based technologies to reduce manufacturing costs, while maintaining quality [5]. In this regard, stamping (or deep drawing) is one of the most cost-effective manufacturing processes for sheet metal components used in aircraft fuselage and engines [6]. The migration from traditional forming processes to mass production stamping base processes has given rise to various issues due to the high springback.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Simulation Investigation on Deep Drawing Process of Inconel 718 with and without Intermediate Annealing Thermal Treatments

Ulibarri¹,

Galdos²,

Argandoña³

et al. 2020

Applied Sciences

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The aeronautical industry is moving from high-capacity large-airplane construction to low-capacity small-airplane construction. With the change in the production volume, there is a need for more efficient manufacturing processes, such as stamping/deep drawing. However, the streamlined shape and exotic materials of airplanes pose a challenge to accurate numerical simulation of the manufacturing processes. In the case of the Inconel 718 material, researchers previously proposed numerical models; however, these models failed to take account of some key parameters, such as the degradation of the elastic modulus and intermediate annealing thermal processes. The aim of the present study was to characterize the Inconel 718 material, with and without intermediate annealing thermal treatment (TT) and to propose a suitable model. To evaluate the accuracy of the proposed model, a U-drawing benchmark test was used.

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“…The application of hot stamped components in the automotive industry is steadily increasing. It is a strategic product that helps the automakers satisfies the safety needs and fuel reduction requirements by means of the lightweight design concept, a current trend for new vehicles [1][2][3][4] .…”

Section: Introductionmentioning

confidence: 99%

The use of Scanning Vibrating Electrode Technique to Evaluate the Effect of Hot Stamping on the Corrosion Resistance of 22MnB5 press-hardened Steel Electroplated with Zn-Ni

et al. 2019

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Carmakers must achieve the worldwide targets for lightweight materials, safety and reducing the fuel consumption. The use of press-hardened steel (PHS), in vehicle structures has been contributing with these requirements. This type of steel is widely used for the hot-stamping which consists in heating the steel blank to total austenitization temperature and then transferring it from the furnace into the die tool where the steel is formed and quenched at the same time. PHS is usually protect with metallic coatings in order to avoid both steel oxidation and decarburization. Hot-dip Al-Si coating is currently the main used in this application. However, alternative coatings, like zinc-based, are under investigation. This work aims at evaluating the corrosion resistance of the 22MnB5 grade PHS, electroplated with Zn-Ni, before and after hot stamping, using the scanning vibrating electrode technique (SVET). Results from SVET showed that samples prior to hot stamping, the corrosion mechanism was uniform over the exposed surface, and was mainly related to selective dissolution of zinc from the coating. On the other hand, hot stamped samples showed localized corrosion mechanism with decrease in current with time of immersion due to the formation of corrosion products on the exposed surface.

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Increasing performance of Hot Stamping systems

Cited by 10 publications

References 7 publications

New Developments and Future Trends in Low-Temperature Hot Stamping Technologies: A Review

New Developments and Future Trends in Low-Temperature Hot Stamping Technologies: A Review

Experimental and Numerical Simulation Investigation on Deep Drawing Process of Inconel 718 with and without Intermediate Annealing Thermal Treatments

The use of Scanning Vibrating Electrode Technique to Evaluate the Effect of Hot Stamping on the Corrosion Resistance of 22MnB5 press-hardened Steel Electroplated with Zn-Ni

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