Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Statistical analysis of sheet steel flatness after the insertion of centre buckles
Submission Author:
Fabiano José Kretzschmar , SC
Co-Authors:
Claudimir A. Carminatti, Hazim Ali Al-Qureshi, Fabiano José Kretzschmar
Presenter: Fabiano José Kretzschmar
doi://10.26678/ABCM.COBEM2017.COB17-2373
Abstract
Buckles-free flatness is an essential requirement of sheet steels for appliances panels. This article addresses the correction of quarter-buckles and overall flatness improvement on ABNT NBR 5915 batch annealed steel coils ranging 0.50-0.60 mm in thickness and 1100-1500 mm in width, for refrigerator cabinets. The technique comprehends the introduction of 30 i-units steady and controlled centre buckles into the coils during cold rolling and its correction at the Temper Mill. A set of ten coils were statistically compared to the production records. The results demonstrated that the insertion of center buckles into the cold rolled strip was effective to eliminate quarter-buckles but the overall sheet flatness did not experience statistically significant improvement.
Keywords
Flatness, Quarter-buckles, Sheet steel, cold rolling
