The current state of 3D technologies for manufacturing volumetric metal products is analyzed. It shown that the main advantages additive welding obtaining three-dimensional structures complex shape in comparison with SLM-technologies are:– increase process productivity by 1–2 orders same power consumption; 3–10 times reduction cost equipment;– possibility increasing overall dimensions created parts a factor 10 or more;– expansion range used consumables (powders, wires, composite materials);–...

The prospects of hybrid laser-plasma cutting metals have been justified, a design an integrated plasmatron for was proposed and the results carbon sheet structural steels using such were forecasted. It shown that in order to minimize losses laser radiation obtain maximum penetration, it is advisable assemble according coaxial scheme with axial arrangement minimum inclination non-consumable electrodes (one or more), distance from working end which axis beam should lie range 2...3 mm. diameter...

This paper reports a study into features of the formation structures permanent butt joints plates with thickness 1.5 mm made from high-strength aluminum alloy 7075 Al-Zn-Mg-Cu system. Welding by melting these was performed using three techniques: laser, microplasma, and hybrid laser-microplasma. To implement latter two, compressed arc on multipolar asymmetric current used. The purpose research to establish tendency characteristic defects possibility their elimination. It has been determined...

Publications, describing the characteristic technologies of aluminium alloy welding by an arc constricted high-velocity inert gas flow were analyzed.It is shown that plasma-arc (PAW) further development process nonconsumable-electrode inert-gas welding.It established during PAW alloys, there was a transition from alternating sinusoidal current to reverse polarity direct current, and furtheron variable asymmetrical with rectangular waveform.A more promising direction improvement equipment...

Manufacturing complex-shaped metal products by 3D-printing is becoming ever more urgent in modern industry.Laser technologies (SLS-and SLM-processes) are most often applied for this purpose, while electron beam (EBF 3 ) used less often.Both of them characterized quite high cost and low efficiency.This paper deals with new tendencies application welding technology complex metallic products, including those complemented concurrent or subsequent machining.It shown that to produce volumetric...

Main stages of development equipment and technology hybrid consumable-electrode plasma-arc (plasma-MIG) welding aluminium alloys are analyzed.Main design solutions at torches for plasma-MIG shown, i.e. transition from rod anode in torch plasma part to ring anode.Application simplifies the improves arc contact.The paper presents advantages process with coaxial wire feed compared traditional inert-gas welding.23 Ref., 15 Figures. K e y w o r d s :hybrid welding, consumable electrode, feed,...

This paper demonstrates the usefulness of application heat electric arc as a source for layerby-layer synthesis volumetric products by using MAG, TIG and PAW cladding methods with powder compact (solid wire) filler materials. The influence process parameters on distribution in deposited metal, formation stress-strain state structure well geometric characteristics is determined through computer simulation experimental research. Technological recommendations improvement stability are given.

This paper reports a study into the regularities of interphase interaction, features in formation intermetallic phases (IMPs), and defects when surfacing steel on titanium four ways: P-MAG, CMT, plasma by an indirect arc with conductive wire, PAW. A general tendency has been established IMP occurrence all considered methods. It was determined that technique involving wire is less critical as regards formation. That makes it possible to obtain layer minimum thickness (25...54 μm) combination...

трехмерная печать металличесКих оБЪемных изДелий слоЖной Формы на основе сварочных плазменно-ДУговых технологий (обзор)

The object of this study is structural formation during the surfacing steel (iron) on titanium with plasma-sprayed coatings to obtain a butt connection titanium-steel bimetallic plates. task be solved was devise technology for applying barrier layer between and defect-free joint edges sheets carbon steel, clad titanium, under conditions arc or plasma titanium. application carried out by spraying wire iron powder. In case, coating thickness 150...750 μm applied Grade2 which 1–2 mm thick...

The known methods of welding railway rails in terms their efficiency, productivity and ability to provide the quality welded accordance with requirements standards force were analyzed.When evaluating efficiency different welding, technological features formation joints, values mechanical properties, macro-and microstructure probability defects formation, possibility automation process taken into account.It is shown that such as thermit, automatic electric arc, gas-pressure resistance found...

проанализированы основные этапы создания оборудования и разработки технологии гибридной плазменно-дуговой сварки плавящимся электродом алюминиевых сплавов.показаны конструкторские решения при разработке горелок для -т.е.переход от стержневого анода плазменной части горелки к кольцевому.использование кольцевого упрощает конструкцию улучшает контакт дуг.в статье представлены преимущества процесса с коаксиальной подачей проволоки по сравнению традиционной сваркой в среде инертных газов

The object of this study is determining the stressed-strained state (SSS) a welded article by applying quantitative non-destructive testing. relevance associated with need to devise universal methodology for quantification SSS using simplest approaches and means provision. To solve task, an estimation-experimental procedure has been developed. This based on comparing digital stereo images individual sections (spatial primitives) before after its welding, followed computer processing....

The Paton Welding Journal, 2022, №12. International Scientific-Technical and Production Journal «The Journal» has been published monthly since 2000 in English, ISSN 0957-798X. is a cover-to-cover English translation of the «Avtomaticheskaya Svarka» (Automatic Welding) journal. journal 1948 Russian, 005-111X.

This paper considers a possibility to obtain high-quality butt junctions of bimetallic sheets from steel clad with layer titanium, the use barrier layers. The task that was tackled related preventing formation Ti-Fe intermetallic phases (IMPs) between and titanium layer. layers (height ~0.5 mm) vanadium copper alloys were surfaced by arc techniques while minimizing level thermal influence on base metal. To this end, plasma surfacing current-driving wire pulsed MAG used. obtained samples...

Automatic Welding, 2021, №12. Journal «AVTOMATICHESKAYA SVARKA» Monthly scientific-technical and production journal. ISSN: 0005-111X, Since 1948. Russian version of «The PATON Welding Journal» Text in Russian, contents summaries English. The presents a wide range promotion information the field technologies, equipment materials for welding, surfacing, brazing, deposition protective coatings.

The Paton Welding Journal, 2021, №12. International Scientific-Technical and Production Journal «The Journal» has been published monthly since 2000 in English, ISSN 0957-798X. is a cover-to-cover English translation of the «Avtomaticheskaya Svarka» (Automatic Welding) journal. journal 1948 Russian, 005-111X.

The technological concept of welding high-strength steels with the yield strength over 1200 MPa is proposed and scientifically substantiated, which consists in combination pulsed-arc MIG application a high-alloy wire Cr-Ni-Mn alloying system.The structured information on peculiarities thermal cycle its influence structural transformations HAZ weld metal was obtained.The notion course physical metallurgical processes depending basic parameters standard forced modes developed.Their positive...

Existing techniques for applying intermetallide layers are characterized by low productivity, difficulties associated with the maintenance and operation of technological equipment, as well significant costs purchase materials spraying. Therefore, modern science shows considerable interest in development new, highly effective technologies to form coatings on surface articles. Such promising include technology plasma-arc spraying (PAS) flux-cored wires. This technique has a number advantages,...

Вступ. Надійність та ефективність роботи промислових металургійних агрегатів, таких як хлоратори, електролізери інші, що працюють в умовах агресивних кислотних і лужних середовищ при підвищених температурах, першу чергу визначаються строком їх експлуатації.Проблематика. Захисний шар корозієстійких внутрішніх поверхонь складений з відносно невеликих за розміром окремих захисних елементів, має недолік — стик, сформований монтажними сумішами, стійкість яких значно поступається основному...