Process for producing heavy-duty high-pressure ferrous metal cup

Details Process for producing heavy-duty high-pressure ferrous metal cup Process for producing heavy-duty high-pressure ferrous metal cup

1975-12-29

1977-11-22

Lanham, C.W.

Metal deforming

By extruding through orifice

With metal-deforming other than by extrusion

72267, B21C 2318, B21C 2320

Patent

active

040590038

ABSTRACT:
Large, heavy-duty, high-pressure resistant cup-shaped ferrous metal industrial products possessing substantially thick-walled cylindrical barrels are forged in such manner as to obtain greatly improved quality, dimensionally, metallurgically and otherwise, by the use in sequence of a combination of metal-forging elements which includes a cylindrical female die member; an annular metal-working and metal-displacing ring having an external diameter which is only slightly less than the bore of the cylindrical female forging die member and an internal diameter which is only slightly greater than the external diameter of a metal-working and; a metal-working and metal-displacing disc which interfits with the annular metal working and metal-displacing ring; a first round forging press follower of a diameter which is adequate to entirely cover the metal-working and metal-displacing disc and a substantial portion of the annular metal-working and metal-displacing ring; and a second round forging press follower of a diameter which is slightly less than the internal diameter of the annular metal-working and metal-displacing ring and therefore covers only the metal-working and metal-displacing disc.

REFERENCES:
patent: 1082200 (1913-12-01), Knaebel
patent: 2679931 (1954-06-01), Cigliano
patent: 2810478 (1957-10-01), Sejournet et al.

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