ISSN 2594-5297
50º Seminário de Laminação — vol. 50, num.50 (2013)
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Abstract
Rising production speeds increase the risk of coil breaks in rolling mills due to both visible and hidden material defects. A typical number of seven coil breaks per months is recorded in coupled pickling and tandem lines as well as in non-coupled tandem lines. Approximately half of these breaks are due to visible material defects on the surface. Apart from material losses, coil breaks may cause loss of production of over one hour. This essay presents the results and advantages of a defect warning system to prevent coil breaks in tandem lines. The prerequisite for this is an inspection system installed in the upstream pickling line. The basis for this are detection, classification as well as access to information "relevant" for quality decisions, which is enabled by innovative filter stages. This information may be used for an anticipatory analysis of potential production failures. It leads to a re-definition of the inspection performance as the number of correct quality decisions based on data quality. Methods on which inspection systems are based in order to meet such requirements are introduced.
Rising production speeds increase the risk of coil breaks in rolling mills due to both visible and hidden material defects. A typical number of seven coil breaks per months is recorded in coupled pickling and tandem lines as well as in non-coupled tandem lines. Approximately half of these breaks are due to visible material defects on the surface. Apart from material losses, coil breaks may cause loss of production of over one hour. This essay presents the results and advantages of a defect warning system to prevent coil breaks in tandem lines. The prerequisite for this is an inspection system installed in the upstream pickling line. The basis for this are detection, classification as well as access to information "relevant" for quality decisions, which is enabled by innovative filter stages. This information may be used for an anticipatory analysis of potential production failures. It leads to a re-definition of the inspection performance as the number of correct quality decisions based on data quality. Methods on which inspection systems are based in order to meet such requirements are introduced.
Keywords
Strip breaks; Automatic surface inspection; Material loss; Tandem line; Rolling mill.
Strip breaks; Automatic surface inspection; Material loss; Tandem line; Rolling mill.
How to refer
Fodra, Valdir;
Hoenen, Michael.
ROLLING MILL STRIP BREAKS PROTECTION THROUGH AUTOMATIC SURFACE INSPECTION
,
p. 984-993.
In: 50º Seminário de Laminação,
São Paulo,
2013.
ISSN: 2594-5297
, DOI 10.5151/2594-5297-24117
