Integrated die forge forming method for flange valve

Integrated die forge forming method for flange valve

CN
  • CN 100,402,184 C
  • Filed: 05/22/2006
  • Issued: 07/16/2008
  • Est. Priority Date: 05/22/2006
  • Status: Active Grant
First Claim
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1. integrated die forge forming method for flange valve, be to take blanking successively, blocking, finish-forging, side cut, it is characterized in that:

  • carry out blocking shape blank just after the blanking, be that the material external diameter is swaged into external diameter greater than valve body dual-side flange in advance, again the middle part is flattened, thickness after flatten at the middle part is greater than the external diameter of flange in the valve body, make the first shape blank of length greater than valve body dual-side flange direction length, first shape blank is put into the finish-forging that carries out unidirectional die forging in the upper and lower mould, cuts edge behind the finish-forging.

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