ELECTRODE FOR ARC WELDING AND RESURFACE WELDING Russian patent published in 2010 - IPC B23K35/365 

FIELD: process engineering.

SUBSTANCE: invention can be sued in arc welding or resurface welding for modification of weld metal by nano-sized refractory particles. Two-layer coat is applied onto metal rod surface. Coat inner layer comprises slag- and gas-forming components. Outer layer consists of pulverised mix of micro- and/or nano-sized refractory components with binder. Coat outer layer thickness makes 1.8-9 % of metal rod diametre and is selected depending upon coat inner layer thickness. Coat outer layer can be discrete or continuous. Outer discrete layer represents longitudinally or spirally arranged grooves of V, U or "П" shape arranged regularly on the coat inner layer surface.

EFFECT: higher reliability in production and operation.

6 cl, 2 dwg, 2 tbl, 2 ex