Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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METHOD OF MODIFYING THE WELD METAL NANOSTRUCTURED POWDERS FOR INCREASING THE MECHANICAL PROPERTIES OF WELDED JOINTS

Zernin E.A. 1 Kuznetsov M.A. 1
1 Yurginskij Technological Institute (branch) of the Federal State Autonomous Educational Institution of Higher Education
In this paper some methods for introducing nanostructured powders into the liquid weld pool with different methods of arc welding (manual arc welding with coated electrodes, welding consumable electrode gas-shielded, submerged arc welding), as well as their influence on the structure and properties of the weld metal welds. Analysis Research has shown that as a result of nanostructured powders into the molten pool during arc welding occurs: - modification of weld metal; - improving the toughness and hardness of the weld metal - grain refinement in the HAZ structure, - improvement in the properties of the arc and the weld formation seam - increased productivity of the welding process. We propose a new method of introducing nanopowders into the weld pool through the shielding gas, which consists in applying a dosage of nanostructured particles of chemical elements through the shielding gas using a special device.