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US 5,673,581 AGranted
Method and apparatus for forming thin parts of large length and width
OwnerVladimir Segalinventor
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OwnerVladimir Segalinventor
Estimating the term…
Method and apparatus for fabrication of large thin parts, such as panels having integral stiffeners arranged in any desired pattern, for superplastic and semisolid forming of complicated components, and for consolidation and bonding of powder and composite materials into flat products, include forging-rolling between a flat die and a circular die with a ratio of a contact length between the circular die and a billet to a billet thickness between 20-75 that prevents a material flow in a rolling direction and extrudes the material into die cavities. The circular die is formed as a ring-shaped element sliding along cylindrical guide surface. Both dies are displaced by press to squeeze and forge a billet into a product. For semicontinuous processing of very long parts, the dies are divided into a plurality of sectioned elements which are periodically introduced into a working zone.
A method of forging-rolling of billets between flat and circular sculptured dies which define a smoothly convergent working zone and contact area between the billet and dies, the method comprising the steps of determining a critical ratio of a contact area length to a billet thickness that prevents a material flow into a rolling direction and provides an extrusion of all material into die cavities;
An apparatus for forming a thin parts of large length and width by forging-rolling at horizontal extrusion presses, comprising a frame attachable to a stationary press traverse;
Dependencies are inferred from the claim text.