Welding Production

Prepared production has the following features:

• Oxygen cutting carbon and low-alloy steels with a thickness of 4 to 160 mm in any configuration (manual cutters, semiautomatic, flange-cuts, ASH-70, CNC machines).
• Plasma cutting high-alloy steels, nonferrous metals, thicknesses from 6 to 56 mm.
• Mechanical cutting:
  • guillotine - up to 16mm thickness;
  • circular shears - thickness 4 mm;
  • press-cutters - corner 100x100x10 mm;
  • mechanical hacksaw - Ø 159 mm.
• Bending of steel:
  • with a yield point up to 400 ... 500MPa;
  • thickness up to 120 mm (depending on width);
  • maximum width of rollers - 5 meters;
  • rolling of corner – 50x50x5 mm.
• Bending of tubes on the machine with HFC:
  • carbon steel - up to Ø219 mm;
  • alloy steel - up to Ø159 mm.
• Rectifying of plates:
  • at press - with thickness up to 160 mm;
  • at roll-straightening machine - with thickness up to 40 mm.

Welding production has:

• Welding technology:
  • carbon;
  • heat-resistant;
  • stainless steel;
  • austenitic steels.
• Welding process:
  • manual arc welding with covered electrodes (RDE);
  • gas-shielded arc welding (MIG / MAG);
  • automatic submerged arc welding (AWF);
  • tungsten-arc inert-gas welding (TIG);
  • semi-automatic arc welding in CO2.
  • electron-beam welding
• Specialized areas:
  • welded rotors with weight up to 200 tons (weld in a narrow submerged treatment);
  • orbital TIG welding joints "tube-tube plate (for heat exchangers);
  • arc spraying (aluminum) parts of hydraulic turbines;
  • welding of Francis runners;
  • welded stamped blades.
  • electron-beam welding of packages of steam turbine blades
• Furnaces for heat treatment of welded structures:
  • length up to 13 meters
  • height up to 4 meters
  • width up to 5 meters,
  • weight up to 200 tons.

Welding production occupies 30-35% of all production areas of the plant and has a manufacturing capacity for about 30 thousand tons of welded structures per year.

Welding production certified under requirements of ISO 3834-2:2005, Certificate No Q-014/2013 dated 26.08.2013.

Welding production has the permission of the Main Directorate of the city in Kharkov region to carry out welding, gas-flame and surfacing works.

Permission for conducting certification of welders for admission to implementation of work:

• with manual arc welding, MAW;
• with welding fusible electrode in active gases MAG;
• welding tungsten electrode in inert gas TIG;
• submerged arc welding SAW.

Department of Chief Welder has qualified personnel on welding production, including international level.

The main activities of Chief Welder Department:

• development of technology for preliminary works;
• development of technology for welded structures;
• design development of non-standard equipment and tooling for welding;
• rate setting of works in pre-production and welding production;
• equipment for welding with new welding equipment;
• research and development works on welding with assistance of Scientific Research Institutes, including IEW named after E.O.Paton.