New generation automatic machine UD-682 is designed for welding plate bodies
New generation automatic machine UD-682 is designed for welding plate bodies by narrow-gap TIG with magnetic control of the arc (UD 682) and allows complete automation of electric arc welding process by a unique technology – by the method of automatic following of welding electrode position using a special device – arc sensor. Welding is performed by argon-arc process with tungsten electrode and filler wire, in several passes (number of which depends on welded item thickness). Components of leading foreign and local manufacturers are used in the machine. Automatic welding machine is applied in manufacture and repair of large-sized metal structures 20 – 110 mm thick.
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The new power saving technology for improvoment of the efficiency of heat-exchange surfes of flat oval pipes
Innovation project developed together with NTUU “Kiev Polytechnic Institute” for the first time in the world practice – power-saving technology for improvement of the efficiency of heat-exchange surface of flat oval pipes with welded-on stiffeners (resistance welding). Flat oval pipes with incomplete finning of the surface (Fig.1) are applied in different industries (petroleum processing, chemical, gas, food industries, in gas transportation system, etc.) as heat-exchange carrier: water economizers, boiler unit heaters, boilers-utilizers, regenerators, oil coolers, dry cooling towers and air capacitors. Mastering new heat-exchange surfaces will lead to a considerable saving of metal (by approximately 1.5 – 2 times) and power resources, as well as lowering of the price for one running meter of pipes.
New t echnology of highly efficient automated submerged-arc welding of vertical site butt
Innovation technology - of highly efficient and cost-effective automated submerged-arc welding is designed for welding vertical site butt joints of span structures of bridges and large metal structures with plate thickness from 12 up to 50 mm by solid wire under a layer of molten slag with compulsory formation of the seam to two copper shoes. The developed new welding process leads to a considerable saving of power, essential lowering of the cost of welding consumables and improvement of operating efficiency. This technology combines a quiet running of the process, characteristic of electroslag welding with the high quality of metal of the weld and HAZ (heat-affected zone), that is usually provided only by flux-cored expensive wire welding. In addition, the submerged-arc welding process is characterized by much lower emissions of welding aerosol compared to welding by self- shielded flux-cored wire and welder’s labour hygiene.
Technology for mechanized pulsed-arc consumable electrode welding with the pulsed mechanism for automatic feeding of welding wire. Machine PSh-007
For the first time in the world practice – the technology for mechanized and automated pulsed-arc consumable electrode welding, which features application of the pulsed mechanism for automatic feeding of welding wire synchronized with the operation of the pulsed source of welding current. Both the sources (pulsed current and pulsed feed of wire) are interconnected by automatic means – by an optimum algorithm of control of electrode metal drop transfer that allows an effective redistribution of melting energy of the electrode and base metal. Presented technology allows achieving in practice a considerable reduction of energy, labour and other resource consumption.
Technologies and equipment for underwater welding. Machine PH-160 "Neptun 7"
Unique technologies and equipment for underwater welding – allow work performance at any time of the year, in particular under the ice, at increased pressure and at other complicating factors. We guarantee a high quality and reliability of welds and joints of low-carbon and low-alloyed steels. Technologies and mechanization means for underwater welding processes were developed that is particularly important in emergency-rescue operations and operations under hazardous conditions. They allow an essential increase of welding operation efficiency, lowering of welding consumable and power consumption in view of optimization of the entire production process.