Highly Efficient Hot Stamping Technology

A review on hot stamping

The production of high strength steel components with desired properties by hot stamping (also called press hardening) requires a profound knowledge and control of the forming procedures. In this way, the final part properties become predictable and adjustable on the basis of the different process parameters and their interaction. In addition to parameters of conventional cold forming, thermal ...

Optimally Efficient Accountable Time-Stamping

Efficient secure time-stamping schemes employ a 2-level approach in which the time-stamping service operates in rounds. We say that a time-stamping service is accountable if if it makes the TSA and other authorities accountable for their actions by enabling a principal to detect and later prove to a judge any frauds, including attempts to reorder time-stamps from the same round. We investigate ...

Towards Efficient Time-stamping for Autonomous Versioning

We sketch a decentralized versioning scheme that handles the detection of concurrent updates among an arbitrary number of replicas, overcoming the limitations that a centralized knowledge of that number imposes to Mobile Computing.

Coupled numerical simulation of hot stamping process and experimental verification

Hot stamping process is a high non-linear process showing the effect on thermal, mechanical and metallurgical phenomena as they relate to each other. In order to carry out this coupled numerical simulation, fundamental thermal properties such as interfacial heat transfer coefficient and convection heat transfer coefficient as well as crucial mechanics properties were first investigated. Hot sta...

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