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Powder metallurgical method

  • US 4,569,823 A
  • Filed: 03/23/1984
  • Issued: 02/11/1986
  • Est. Priority Date: 05/09/1983
  • Status: Expired due to Fees
First Claim
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1. A powder metallurgical method for producing metal bodies, wherein a particle size distribution closely approximating the so-called Fuller curve for maximum density packing of spherical particles is chosen of at least two powder fractions with different mean particle size relationship vis-a-vis each fraction, said powder being a spherical powder of magnetizable material produced by inert gas atomization, the powder is then magnetized and introduced into a container or the powder is magnetized after introduction in said container, said mixed and magnetized powder is sintered in said form with the exclusion of air at a temperature of about 25°

  • C. from solidus temperature of said material and less, but at a sufficient temperature to effect said sintering so as to produce a sintered body of a density without communicating porosity.

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