The influence of hardfacing on the susceptibility of buckeye coupler knuckles to brittle fracture (IM-MF-033)

Initially the contacting surfaces of the buckeye coupler knuckles on HST sets wore very rapidly. To obviate this the practice was adopted of hardfacing the couplers. The hardfacing is sprayed on and consists of tungsten carbide in a nickel-chrome base. After spraying the coating is fused by raising the temperature...