Modelling Resistance Spot Welding of AHSS
Authored by Max Biegler, Research Assistant RSW, Fraunhofer IPK, Berlin Modelling resistance spot welding can help to understand the process and drive innovation by asking the right questions and giving new viewpoints outside of limited experimental trials. The models...
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Dealing with Springback: The Sidewall Curl Issue
Compensate or Countermeasure? Taking Sidewall Curling Seriously In this blog post Akshay Wankhede, Application Engineer at AutoForm, describes the causes for the springback phenomenon known as the “sidewall curl”, how its occurrence on stamped panels can be identified...
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A Look at the New EU Legislation for Cars and Vans
We’ve been monitoring the evolution of vehicle legislation in the world closely, advocating for life cycle thinking to be considered for the next generation of regulations. The European Union has been actively pursuing Post 2020 regulations, looking hard at CO2...
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Blanking, Shearing and Trim Operations
Advanced Hight-Strength Steels (AHSS) exhibit high work hardening rates, resulting in improved forming capabilities compared to conventional HSLA. However, the same high work hardening creates higher strength and hardness in sheared or punched edges, creating...
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Future Mobility – From Moving Cars to Moving People
Here at WorldAutoSteel, we have been studying the changes in the automotive industry for several years, focusing particularly on ride sharing, autonomous, electric vehicles and steel's role in that marketplace. George Coates, Technical Director for WorldAutoSteel and...
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The Value of Mass Benchmarking
Product benchmarking is the process of measuring and analyzing the performance of competitive products. Data from a benchmarking analysis is used at the early stages of product development where performance targets are being set for a new vehicle. As an example of...
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Advanced Steel Processing Technologies
Advanced Steel Processing Technologies For Reduced Cost, Reduced Mass and Improved Functional Performance Laser (Tailor) Welded Blanks A laser welded blank is two or more sheets of steel seam-welded together into a single blank which is then stamped into a part. Laser...
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Tool Wear, Clearances and Burr Height
The diverse microstructures and strength levels of AHSS products present some challenges for stamping operations. Cutting and punching clearances are greater for AHSS, and as a general rule, should be increased with increasing sheet material strength. The clearances...
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Tool Materials and Die Wear
Die wear is affected by, but not limited to, steel strength and surface friction, contact pressure, sliding velocity, temperature, die surface treatment and lubrication. As the material strength and hardness is increased, an increase in die wear occurs which leads to...
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Case Study for Press Energy
The following study is a computerized analysis of the energy required to form a cross member with a hat-profile and a bottom embossment at the end of the stroke (Figure 1). Energy requirements increase with punch displacement, as shown in Figure 2, here energy...
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Press Requirements: Servo Presses
Advanced High-Strength Steel (AHSS) forming challenges can lead to issues with the precision of part formation and stamping line productivity. The stamping industry is developing more advanced die designs as well as advanced manufacturing techniques to help reduce...
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AHSS Energy, Heat and Lubrication
Lubrication is an important input to almost every sheet metal forming operation. The lubricants have the following interactions with the forming process: 1. Control metal flow from the binder. 2. Redistribute strains over the punch. 3. Maximize/minimize the growth of...
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