Method for producing steel fibers
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United States of America Patent
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Apr 25, 2017
Grant Date -
Jul 23, 2015
app pub date -
Feb 25, 2015
filing date -
Jul 23, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
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.
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International Classification(s)
- B23P:OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVE....
- C04B:LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREO....
- E04C:STRUCTURAL ELEMENTS; BUILDING MATERIALS
- B21C:MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PR....
- B26F:PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; ....
- B21B:ROLLING OF METAL
- B23D:PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FI....
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