Integrated die forge forming method for flange valve

Integrated die forge forming method for flange valve

CN
  • CN 1,981,952 A
  • Filed: 05/22/2006
  • Published: 06/20/2007
  • Est. Priority Date: 05/22/2006
  • Status: Active Application
First Claim
Patent Images

1. , a kind of 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, the middle part is flattened, the thickness that flatten at the middle part is made the first shape blank of length greater than valve body dual-side flange direction length greater than the external diameter of flange in the valve body again, 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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