Other

Konstantin P Alexeev

David Grigorievich Bykhovsky

Nikolai N Zorev

Evgeny Nikolaevich Moshnin

Lev V Tupitsyn

Nikolai Ivanovich Romashko

Viktor Alexeevich Odnodushny

Boris P Kukushkin

Vladimir A Alexandrov

Vyacheslav A Morozov

Eduard R Fomin

Sergei K Bakhvalov, Deceased

Larisa M Bakhvalova, Administrator

Jury V Brjukhanov

Valery M Vassin

Boris A Trifonov

Gennady V Rudyak

Leonid V Prozorov

Viktor S Kunin

Oleg V Scherba

Nikolai I Zhiltsov

Valentin N Nesterov

Lev A Rabinovich

The method consists in flanging the wall of a thick-walled shell around a hole made in said wall in adavance until a branch pipe is produced, in calibrating said shell on the inside surface adjoining the branch pipe, and simultaneous straightening of the thick-walled shell on its outside surface in the direction of the longitudinal axis of the branch pipe from the side opposite to the location of said branch pipe. The device for the realization of the method according to the invention comprises a flanging die with guide columns secured on it, said columns carrying a cantilevered arbor capable of moving longitudinally and provided with a mechanism for fixing it in the initial position, and pushers fastened on the movable cross-head of a press, and arranged normally to the longitudinal axis of the arbor with which they interact and symmetrically to the longitudinal axis of the flanging punch and there is an additional die located between said pushers, the lower surface of said additional die having a shape corresponding to the shape of the outer surface of the shell while the lower surface of the punch holder has a shape corresponding to the shape of the inside surface of the shell. Besides, the flanging die is provided with projections entering the slots on the faces of the thick-walled shell.

Pressing branch pipe on thick-walled shell-device for realization thereof

A method of machining a workpiece after preheating consists in that the workpiece material to be removed by a cutting tool is subjected immediately before the removal operation to intense localized heating and notching by a plasma jet, with a groove being formed on the surface to be machined. To this end, a plasma torch is positioned ahead of the cutting tool so that the angle between the direction of the cutting speed and the plasma jet axis ranges from 0 to 45 degrees, and the angle between the direction of feed of the cutting tool and the plasma jet axis from 10 to 45 degrees.

Method of machining workpieces after preheating

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Kolpino Leningradskoi oblasti, undefined

Konstantin P Alexeev