A sheet metal part (20) is produced from a starting sheet metal (27) and has at least one side edge (32) extending along the grain boundaries of the sheet metal material. Separating or breaking the starting sheet metal (27) at a separation location (28) is induced by forming a notch in the starting sheet metal or by cutting or scratching into the starting sheet metal. The starting sheet metal is clamped via a first portion (30) adjacently to the separation location (28). A second portion (31) disposed on the side of the separation location (28) opposite the first portion (30) is acted on to produce a bending moment M about a bending axis B at the separation location (28) and/or to produce a tensile force Z directed away from the separation location (28).

The various embodiments disclosed and pictured illustrate a hammer for comminuting various materials. The embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The hammer includes a connector end having a rod hole therein, a contact end for delivery of energy to the material to be comminuted, and a neck affixing the connector end to the contact end. The neck is formed with at least one neck recess therein. In other embodiments, one or more shoulders are positioned around the periphery of the rod hole for added strength. In still other embodiments, the contact end is configured with more than one contact surface.

A method for shredding a scrap skeleton produced as a machining product of separating machining of a plate-like workpiece and having a scrap skeleton main plane is provided. The method includes creating an incomplete joint having a course along a separating line running in a longitudinal direction. The scrap skeleton is machined for separation along the separating line. A breakable residual connection arranged along the separating line is established between a first scrap skeleton part and a second scrap skeleton part. The method further includes, after the incomplete joint is created, deflecting the first scrap skeleton part and the second scrap skeleton part relative to one another perpendicularly to the scrap skeleton main plane so that the residual connection between the first scrap skeleton part and the second scrap skeleton part breaks, thereby separating the first scrap skeleton part and the second scrap skeleton part from one another.

A method for manufacturing a machine component includes forming a non-linear break notch in a workpiece, freezing the workpiece, and snapping the frozen workpiece apart along the non-linear break notch.

A method of making steel fibers, preferably for use as a concrete additive, and for the supply thereof in making steel fiber concrete, characterized in that to form the steel fibers (2) first a sheet-metal strip (1) is notched either on one face or both faces so as to form steel-fiber wires (4) that are initially connected together by webs (5), and that further, for subsequently converting the webs (5) into thin easily mutually separable separation webs forming separation surfaces that are fracture-rough and low in burring upon separation, the steel-fiber strip is subjected to a flexing process in which each web (5) is subjected to multiple bending deformations about its longitudinal axis in such a way that incipient cracks are produced at the webs (5) due to fatigue fracture and thus the separation webs are produced.

The various embodiments disclosed and pictured illustrate a hammer for comminuting various materials. The embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The hammer includes a connector end having a rod hole therein, a contact end for delivery of energy to the material to be comminuted, and a neck affixing the connector end to the contact end. The neck is formed with at least one neck recess therein. In other embodiments, one or more shoulders are positioned around the periphery of the rod hole for added strength. In still other embodiments, the contact end is configured with more than one contact surface.