METHOD FOR SHEARING STEEL SHEETS BY DISC SHEARS Russian patent published in 2006 - IPC B23D19/06 

FIELD: processes and equipment for finishing rolled pieces.

SUBSTANCE: method comprise steps of tuning disc shears by mounting disc cutters with radial overlap or radial gap; preliminarily mounting upper cutters onto lower ones and loading them by means of device creating vertical compression effort till achieving limit compression load; registering value of elastic deformation of parts of compression device; after releasing load tuning disc shears for slitting thick steel sheets with thickness h by mounting disc cutters at radial overlap or radial gap whose value δ is determined from relation given in description of invention and depending upon value of radial gap or radial overlap of disc cutters for slitting steel sheet with thickness h without taking into account elastic deformations of parts of compression device, maximum thickness of sheared thick steel sheet of limit strength for given disc shears, limit yield values of thick steel sheet with thickness h and H. For positive value δ disc cutters are mounted with radial overlap, for negative value δ disc cutters are mounted with radial gap.

EFFECT: enhanced consumer's properties of thick rolled steel sheets.

22 dwg, 2 ex