Page 15 - MetalForming November 2017

—the Pop-Up search function. It also improves the success of multi-hole and curved-sur- face threading, and its three-pass, fine- finish technology is an improvement over the previous generation of VZ series machines. Sodick, Inc.: www.sodick.com
sheet surface, which helps ensure that user specifications for companies such as BMW are met.
and Impoc for strength measurement. Both systems are operating in BMW’s lines in Regensburg, Germany.
QA Systems for Automotive Steel Lines
As early as 2006, BMW was looking for products for online measurement of surface roughness, oil-layer thickness and material properties in the stamping process. EMG provided two systems: Sorm 3plus for online roughness measurement
Today, more than 55 EMG Impoc sys- tems are used in hot-dip galvanizing, con- tinuous annealing, and pickling lines, as well as pressing and blanking lines in the automotive industry.
EMG Automation: www.emg-automation.com
EMG Automation delivers products for online measurement of material strength and oil-layer thickness in the automotive sheetmetal production and processing industries.
The company’s magnetic-inductive measuring system provides nondestructive online determination of tensile and yield strength. The technology is based on measurement of the magnetic properties of ferritic steel grades. Magnetic values correlate with the destructive test results already obtained in production, and math- ematical models deliver accurate absolute values for the material properties. The result is an online look at tensile and yield strength throughout the coil.
EMG recently introduced two systems to ensure reliable determination of oil- film thickness, which may change during the production process, and require an intermediate measurement of oil-layer distribution. The EMG Solid IR, based on infrared absorption spectroscopy, emits an infrared light that passes through the oil layer, scatters back from the stip surface and passes through the oil layer again. The unit measures intensity of spe- cific wavelengths of the oil layer, and cal- culates the layer thickness.
Secondly, the EMG Solid LIF, based on laser-induced time-integrated fluores- cence spectroscopy, offers low sensitivity against varying surface characteristics and inhomogeneous oil distribution on a microscopic level. Determining which tech- nology to use depends on an EMG analysis of the lubricants and material surfaces for each application.
Users of the Impoc and Solid IR/LIF systems receive coil maps showing material properties and oil layers over the coil or
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MetalForming/November 2017 11
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