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a forging operation consisting of the deformation of a blank by partial swaging with the goal of creating isolated bosses by shortening the billet.

Upsetting is done in a heated or cold state. Hot upsetting is done on horizontal forging machines. Forged gears, valves, springs, rings, and shafts are made by hot upsetting. Cold upsetting is done on automatic cold upsetting machines and presses. Bolts and rivets are made by cold upsetting. Upsetting is distinguished from other stamping processes by the high productivity and accuracy of the forging (without flash). Upsetting with local contact heating of the billets in a stamp on an electrical upsetting machine, which makes it possible to obtain large-size bosses in a single pass, is be-coming widespread.


Suslov, P. V. Kuznechno-pressovoe oborudovanie. Moscow, 1956.




a forging process in which plastic deformation of a preheated blank is used to reduce the height and increase the cross-sectional area of the blank. Upsetting is used as a preliminary to drawing in order to improve the structural properties of the casting and to increase forgeability. It is also used as a preliminary operation before broaching or forging.


The hot-forging operation by which the cross-sectional area of a metal bar or rod is increased locally.
References in periodicals archive ?
Ten years ago it was so well-kept it won awards, but now it is overgrown, unloved and clearly upsetting to those with relatives buried there.
Unlike their nondepressed counterparts in the study, depressed volunteers who cried while watching an upsetting film often didn't report accompanying spikes in sad feelings.
Point 1 meant upsets me very little; Point 4 signified upsets me sometimes; and Point 7 indicated very, very upsetting.
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Upset: Unranked Rosamond (6-5) pulled off the program's biggest win in at least five years, upsetting No.
STEVE COPPELL will not risk upsetting his side's promotion push with a new loan signing.
It was upsetting for a few different reasons,'' said McCline, who will take on Wayne Llewellyn in a 10-round co-feature bout Thursday at New York City's Hammerstein Ballroom.
The French have the best chance of upsetting either Norway or Brazil to advance to the quarterfinals.
Cameron Froede, 145, Palmdale: Wrestling on a bad team that practiced in the school cafeteria, Froede shocked everyone by upsetting Evan Salas for the Golden League title.
One moment you're shaking your head in disbelief at his Bruins upsetting another top-ranked team, the next for a remarkable inability to close out a team that should have been beaten.
A day after nearly upsetting top-seeded San Clemente in the Southern Section Division I-A girls' basketball quarterfinals, Saugus had time to reflect on what might have been.
After upsetting Indiana last year, Kent State goes one step further.