Autofrettage by means of ball

Autofrettage by means of ball

  • CN 101,646,510 B
  • Filed: 08/24/2007
  • Issued: 12/25/2013
  • Est. Priority Date: 09/16/2006
  • Status: Active Grant
First Claim
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1. the method for the dynamic pressure resistance of the metal parts with tubular inner space that increases the pressure bearing system, in described method, at 2000 bar, under the high pressure in the scope between 7000 bar, hard metal balls is forced by the inside in described tubular inner space, the diameter of wherein said hard metal balls is greater than the internal diameter in described tubular inner space before described hard metal balls is forced through described tubular inner space, and the required pressure in described tubular inner space that described hard metal balls is forced through described parts is to produce by means of the fluid under pressure.

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