METHOD OF ELECTRIC ARC SURFACING OF WEAR-RESISTANT COATING ON HAROX 400 STEEL Russian patent published in 2018 - IPC B23K9/04 C21D9/50 C21D1/09 

FIELD: metallurgy.

SUBSTANCE: method includes the electric arc surfacing of the wear-resistant coating on the harox 400 steel by fusion welding using EnDOtec DO*30, or EnDOtec DO*33, or SK A 70-G diameter 1.6 mm in the protective gas medium of the composition: Ar 82%, CO₂ 18%, welding current of 250-300 A, voltage on arc of 30-35 V and subsequent pulse-periodic electron-beam processing. Said treatment is carried out at pressure in vacuum chamber 1⋅10^-2 Pa with induction 0.02-0.03 T, with beam diameter from 40 to 10 mm, pulse duration from 25 to 30 μs, and an energy density of 15-20 J/cm².

EFFECT: production of wear-resistant coatings on carbon and low alloy steels operating under abrasive wear conditions.

4 cl, 4 dwg, 1 tbl, 6 ex