Process optimization for hot-dip galvanizing and continuous annealing

The online measurement of tensile strength and yield point with IMPOCpro increases the efficiency of existing production facilities. With IMPOCpro the results are available immediately, thus achieving a significant time savings and promptly optimizing processes so that possible reworking is reduced and material yield is increased. The total investment in the device pays for itself within 12-24 months. The system is primarily used in hot-dip galvanizing and continuous annealing lines.

The IMPOCpro measuring system is a testing device for automatic, non-destructive online determination of mechanical parameters (tensile strength, yield point) of ferromagnetic steel strip.

The functioning of the non-contact measuring system is based on periodically magnetising the strip, followed by measurement of the gradient of the magnetic residual field intensity on the upper and lower side of the strip.

The mechanical parameters of the steel strip are determined using regression relations, portrayed online in the form of a graph on a plotting computer in the control station and recorded. If a limiting value of the mechanical parameters is exceeded, a warning signal including information on the strip areas concerned is automatically triggered.

Using the IMPOCpro measuring system, the mechanical parameters of each steel coil produced are continuously documented on the basis of strip length and strip width.