METHOD OF OBTAINING A COMPOSITION OF STEEL FIBERS Russian patent published in 1995 - IPC

FIELD: plastic metal working. SUBSTANCE: method of obtaining a composition of steel fibers lies in the simultaneous chopping of the steel sheet in the longitudinal and transverse directions into fibers of different length and of different cross-section. The dimensions of the obtained fibers correspond to the condition l/d ≃ const. The quantitative relationship in the composition of fibers having different lengths l and cross-sections d is determined by the construction and by the amount of milling cutters in the assembly. In this case the steel sheet is supplied to the zone of chopping with constant velocity. The assembly of milling cutters having the same diameter is rotated with constant velocity. Each cutter entering the assembly is equipped with the preset number of knives the preset length of the cutting edge. EFFECT: facilitated manufacture. 1 cl, 3 dwg