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Method of making metal fibers and apparatus for effecting same

  • US 4,599,880 A
  • Filed: 11/10/1983
  • Issued: 07/15/1986
  • Est. Priority Date: 12/23/1981
  • Status: Expired due to Fees
First Claim
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1. A method of making metal fibers from spherical particles of a metal powder, comprising the steps of:

  • feeding said spherical particles of metal powder;

    deforming said spherical particles by rolling over each of said spherical particles so that said spherical particles roll along a rolling axis thereof, while moving in a direction perpendicular to the rolling axis;

    stretching each said particle being deformed along said rolling axis thereof, which coincides with the longitudinal axis of said metal fiber being formed, by contact friction forces;

    simultaneously performing said stretching in said deforming step;

    carrying out said stretching at a rate exceeding the rate of elongation of each said particle being deformed that would be achieved by a decrease in the diameter of said particle as a result of said rolling over alone; and

    unloading said metal fibers.

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