Method of making dry, lubricated ejector pins

  • US 5,644,833 A
  • Filed: 06/05/1995
  • Issued: 07/08/1997
  • Est. Priority Date: 06/23/1994
  • Status: Expired due to Fees
First Claim
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1. A method of manufacturing a mold with a dry ejector, comprising the steps of:

  • providing a nominal length ejector made of metal;

    coating the nominal length ejector with a low friction coating of aluminum or an alloy thereof, and with less than a 0.0002 inch thick coating thereon;

    cutting the nominal length ejector through the metal and the coating to form an ejector of a selective size and forming a cut end with the coating at the corner at the cut end;

    deburring the cut end of the ejector while leaving the low friction metal coating substantially intact at the corner of the cut end without flaking or peeling the coating at the cut end corner; and

    placing the metal coated, cut-to-size in the mold.

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