Determining the optimum cut of sheet roll material

The profitability of forging and stamping plants is directly related to the economical use raw materials. For sheet metal stamping, material losses can account for a significant proportion (up 20-40%), so reducing them even by few percent saves thousands tonnes metal. An indicator utilisation efficiency rationality cutting factor η, defined as ratio weight workpiece rate consumption its production. value depends largely on shape manufactured part, location (strip), size (strip). One ways save transferring parts from individual sheets roll. Calculations some types products showed that transition pre-cutting metallurgical rolling guillotine or disk shears roll gives more than 3% savings, with chess-cutting this economy increases 3-5 times. Bearing in mind, it interest find optimum, terms material, coils when out various shapes, including round ones. This study solves problem determining rational variant coil different sizes supplied factories diameters cut circles.