Dispersion over welded layers of the Fe-Cr-B-C system structure for increasing in their wear resistance

The flux-cored wires, by means of which a metal is built-up for work in the conditions of abrasive wear under shock loads, are alloyed by expensive elements. It significantly affects the restoration cost. The built-up metal with CW of the Fe-Cr-B-C system is much cheaper. It and shoas satisfactory wear resistance at abrasive wear, however, the received layers crack due to under the action of shock loads, since the dendritic needle-shaped inclusions of borides are extricated because of the increased content of carbon and boron in the metal. The sharp ends of the needles inclusions serve as the tension concentrators, causing cracking under the shock loads. Wear resistance of the built-up metal and its resistibility to cracking increases with grinding of the boride inclusions. Therefore, to receive a wear proof layer, it is suggested to attach a vibration with a frequency of 100 Hz and an amplitude of 0; 70; 300 microns from the outside to a support plate during welding up of ÑW of Fe-Cr-B-C system.