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Institut Elektrosvarki, Imeni E.o. Patona

Institut Elektrosvarki Imeni E.o. Patona Akademii Nauk Ukrainskoi Ssr

E.o. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine

E.p. Paton Electric Welding

Institut Elektrosvarki Imeni E. O. Patona Akademii Nauk Ussr

An Ussr Institut Elektrosvarki Imeni E.o. Patona

Institut Elektrosvarki Imeni E.o. Patona Akademit Nauk Ukrainskoi Ssr

Institut Elektrovarki Imeni E.o. Patona

Institute Elektrosvarki Imeni E.o. Patona Akademii Nauk Ukrainskoi Ssr

Institute Electrosvarki Im. Patona

Institut Elektrosvarki Imeni E.o. Patona Akademii Nak Ukrainskoi

Sergei I Kuchuk-Yatsenko

Vasily A Sakharnov

Vladimir K Lebedev

Valery G Krivenko

Boris E Paton

Mikhail V Bogorsky

Boris A Galyan

Boris A Galian

Sergei A Solodovnikov

Vitaly T Cherednichok

Mikhail R Unigovsky

Fedor K Porkhun

Vadim P Krivonos

Vladimir I Tishura

Orest M Serafin

Sergei M Samotryasov

Ivan L Lazebny

Stanislav D Dobrovolsky

Daniil I Belyaev

Ivan K Golomovzjuk

Alexei I Gorishnyakov

Alexandr I Kulesh

Nikolai V Podola

Ivan A Chernenko

Grigory B Asoyants

Evgeny V Rulevsky

Vadim J Ignatenko

Petr V Kuznetsov

Vasily F Zagadarchuk

Boris E Scherbina

Oleg M Ivantsov

Igor A Genis

Grigory B Asoiants

Boris L Grabchev

Vladimir S Kachinsky

Isaak Y Nemirovsky

Vasily T Ivanov

Vadim Yurjevich Ignatenko

Georgy A Arendt

Valerii G Krivenko

Nikolai Ivanovich Postolaty

Yakov Borisovich Entin

Alexandr P Miroshnichenko

Boris I Kazimov

Valentin I Krivorotenko

Alexandr Nikolaevich Filippov

Jury G Shvets

Filipp I Peretrukhin

Nikolai I Postolaty

Vladislav I Ponomar

Alecsandr V Didkovskiy

Tamara A Chertilina

Alexei M Malakhov

Alexandr M Starostin

Alexandr K Kharchenko

Sergei I Golovchenko

Vladimir F Zelensky

Valeriy G Krivenko

Andrei V Bondaruk

Vladimir J Bogatyrev

Viktor V Jumatov

Boris L Chev

Nikolai D Goronkov

Mikhail V Bogorskii

Mikhail F Vorobei

Evgeny Petrovich Martynov

Mikhail Pavlovich Koval

Victor N Golovachev

Alexandr P Miroshnickenko

Anatoly D Gluschenko

Victor Gr Shkurko

Julian K Konovalov

Fedor A Andrienko

Vladimir G Chirskov

Anatoly P Nizov

Alexandr B Kheinis

Yaroslav I Mikitin

Mikhail N Sidorenko

Mikhail V Bogorskiy

Vladimir Stanislavovich Kachinskii

Anatoly A Toldin

Vassilii A Sakharnov

Boris I Kazymov

A method of flash-butt welding in which the travel speed (V,) of the machine mobile plate and the welding voltage (U,) are changed (by preset programs) and the travel speed is controlled through negative feedback by welding current, the voltage being changed discretely for each flashing fixed interval of t,duration as a function of the increment of the actual average speed of flashing details of shortening (V,) during the previous flashing interval, V,value being maintained at the present level, lower than V,. The invention envisages a change of the coefficient of enhancement of the negative feedback in a discrete manner for each preset flashing interval of t,duration as a function of V,increment during the previous flashing interval. The invention further provides for an increase in the value of U,and a decrease of the coefficient of negative feedback to the set value until the speed has reached the set value of speed V,at which upsetting is switched on, or after the set value of Q,has been reached, U,is increased and the coefficient of negative feedback is decreased to the set value, these values remaining constant until upsetting is switched on.

Method of flash-butt welding

A press welding process which can be used in such industries as car-making, production of hot-water boilers, industrial and civil construction, in construction of pipelines using small and medium diameter pipes, for welding parts with a solid and developed cross-section, as well as for joining parts to form a T-joint. A magnetically impelled arc butt welding is achieved, that, during heating, the controlled continuous displacement of the parts being welded is performed where the gap between the parts edges is kept constant. The value of the welding arc voltage is used as the parameter for the gap size adjustment, and the moment of achievement of the required temperature on the edges of parts being welded, is determined by the length of the relative displacement of the parts, and when the assigned values of displacement have been reached, the speed of the arc movement along the edges of the parts being welded, is programmed. An improved quality of the welded joints produced by magnetically impelled arc butt welding is obtained.

Method of magnetically impelled arc butt welding

A machine for flash-butt welding of rails, incorporates two tong-type clamping devices made in the form of two two-arm levers carried by a common central axle with insulation from each other and capable of being displaced along the axle relative to each other by two flashing-upsetting hydraulic cylinders connecting them and having bimetal current-carrying rods. Each of the two-arm levers is hinged at one end to the rod or the clamping hydraulic cylinder case, respectively, and the other end is fitted with the clamping and current-carrying jaws. Two welding transformers built into the hollow two-arm levers of one of the two tong-type clamps are joined by current-carrying jumpers through the current-carrying part of the rods of the flashing-upsetting hydraulic cylinders to the current-carrying clamping jaws. A clamping hydraulic cylinder is made with a hydraulic intensifier built into its rod. A reflux valve with a calibrated spring and shank is built into the plunger-rod of the hydraulic intensifier, and a pressure valve is mounted on the hydraulic intensifier cover-lug, this valve being connected by the internal valves with the hydraulic intensifier cavities. The flashing-upsetting hydraulic cylinders being made in the form of tandem-cylinders, wherein two pistons separated by a partition are mounted on a common rod in each hydraulic cylinder.

Machine for flash-butt welding of rails

Method for pressure welding of parts heated with an arc moving in

Machine for pressure welding workpieces heated with arc moving in

Method of flash-butt resistance welding of a batch of like parts in pairs

A welding complex in accordance with the invention comprises a machine for resistance butt welding, means for supporting the end part of the pipeline and holding means including a platform reciprocable axially of the pipeline and a plate with a device for carrying the pipe section to be welded, rotatable by a drive between the positions of loading a pipe section and aligning it with the pipeline. For loading the holding means with the plate rotated into the loading position, by longitudinally displacing a pipe section from the accumulator, the latter is arranged alongside the platform, so that the pipe section it delivers extends at an acute angle relative to the end of the pipeline.

Welding complex

The machine of the invention, intended for resistance butt welding of pipes, comprises two semi-housings mounted externally on the pipes to be welded to the opposite sides of a joint and interconnected by the flash and upset drive, a clamping device mounted in each semihousing, including radially arranged hydraulic cylinders with clamping shoes, and a control system of the hydraulic cylinders. The control system of the hydraulic cylinders includes control valve units structurally associated with the piston rods of the hydraulic cylinders. The control valve units include follow-up spool valves interconnected by their common actuator linkage.

Machine for resistance butt welding of pipes

Machine for flash butt welding of pipes

The disclosed process includes the steps of and upsetting the flashing parts being welded. The flashing is conducted with concurrent measurement of useful electric power and an electric parameter of the flashing process which is related to the power by a function which maximizes the useful power at a predetermined value of said electric parameter. Then the value and sign of the power and parameter increments are determined within one and the same period of time. The parts are brought closer together up to the moment when the ratio of the power and parameter increments reverses ints sign. Then the parts begin to be separated up to the moment when the value of said ratio reaches the preset value selected to suit the welding circuit resistance and the cross sectional area of the welded parts.

Method for controlling a flash-butt resistance welding process

A flash-butt resistance welding process including a flashing of parts being welded and their upsetting. The direction of speed of motion of the parts during flashing is changed by converging and diverging them. The parts being welded are converged up to the moment when the total resistance of elementary contacts arising between the flashed surfaces of the parts becomes equal to 0.4-0.5 of the short-circuit impedance of the welding machine. Then the parts are diverged up to the moment when the summary resistance of elementary contacts reaches 1.4-1.6 of the short-circuit impedance of the welding machine.

Flash-butt resistance welding process

Control device for flash-butt resistance welding machine

A mobile arrangement for laying a continuous pipeline comprises a resistance welding apparatus, an outer flash trimmer, and at least one pipe-laying means. A jib of the pipe-laying means has a longitudinal support structure suspended therefrom. A suspension is attached to this longitudinal support structure. The front end of said longitudinal support structure carries an outer flash trimmer, and the rear end of said longitudinal support structure carries an inductor for thermal treatment of the weld.

Mobile arrangement for laying a continuous pipeline

Resistance welding apparatus for joining pipes end to end

An internal apparatus for flash welding pipes together in end to end relationship both under factory conditions and in the field, for example in laying trunk pipelines, comprises an elongate supporting member carrying an axially movable clamping assembly with electrode jaws for clamping one pipe, an axially immovable clamping assembly with electrode jaws for clamping the other pipe, and a doughnut-type welding transformer. The welding transformer is disposed at the side of the axially immovable clamping assembly, which is distant from the joint. The axially immovable clamping assembly is mounted on the elongate supporting member in a manner to provide an annular clearance therebetween such that there are extending therethrough two coaxial contact tubes, which are electrically insulated from one another and connect the welding transformer with the electrode jaws, whereby in operation a welding circuit is established.

Apparatus for flash welding of pipes

Growing community of inventors

Kyiv, Ukraine

Sergei I Kuchuk-Yatsenko