FIELD: metals shaping, method is used mainly in production of oil well sucker-rod pump cylinders. SUBSTANCE: initial blank shaping is exercised for one or several runs by radial forging. At last run burnishing of finally formed canal by additional mandrel is exercised simultaneously with forging. In the case pipe forging up to final dimensions is carried out in cold state. Radially-forging machine for the method realization has forging block with set of block heads and mandrel. Mandrel for hot forging has tail end for its centering by canal of deformed pipe. Mandrel for cold forging has additional burnish mandrel with cylindrical sizing small belt. EFFECT: improved process. 5 cl, 3 dwg
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Authors
Dates
1996-12-20—Published
1995-01-11—Filed