When an asymmetrical section is roll formed, the finished product will have _____

Roll forming and electromagnetic forming (EMF) are both metal forming processes.  Roll forming is a low energy rate process that uses a series of dies to bend a long strip of metal into a uniform shape. The process is continuous, with each step making small incremental changes to the shape. Roll forming machines can operate at speeds of 30–600 feet per minute and are good for manufacturing large quantities of parts.  EMF is a high-speed forming method that uses pulsed magnetic forces to shape a workpiece. The process uses a capacitor bank, a forming coil, a field shaper, and an electrically... Show more

Roll forming and electromagnetic forming (EMF) are both metal forming processes. 

Roll forming is a low energy rate process that uses a series of dies to bend a long strip of metal into a uniform shape. The process is continuous, with each step making small incremental changes to the shape. Roll forming machines can operate at speeds of 30–600 feet per minute and are good for manufacturing large quantities of parts. 

EMF is a high-speed forming method that uses pulsed magnetic forces to shape a workpiece. The process uses a capacitor bank, a forming coil, a field shaper, and an electrically conductive workpiece to create intense magnetic fields. The magnetic field lasts only a few microseconds and can reach speeds of up to 300 m/s. 

EMF has several advantages, including: High production rate Non-contact Reduced or no need for lubricants Avoids surface contamination and tooling marks Can be used in clean-room conditions

However, EMF has some disadvantages, including: Only suitable for materials with high electrical conductivity and low flow stress Low efficiency.

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