Filler rod for welding or deposition welding of cobalt alloys - has cobalt sheath surrounding alloy powder core contg. chromium, tungsten, carbon, and other metals

摘要

The rod consists of a ductile alloy sheath contg. over 90% cobalt and surrounding a metal powder filling the sheath and forming 40-55 wt.% of the total wt. of the rod. The homogeneous powder is an alloy contg. 43-81% Cr, 12% min. Co, 0-4.5% C, 0-3.5% Si, 0-20% W, 0.14% Mo, and 0-8% Ni. The pref. compsn. for the alloy core powder is either (I) 43-65% Cr, 20% min. co, 0-3.5% C, 0-3% Si, 0-20% W, 0-14% Mo and 0-8% Ni, and forms 45-55% of the rod; or (II) 55-81% Cr, 12% min. Co, 0-4.5% C, 0-3.5% Si, 0-20% W, 0-14% Mo and 0-8% Ni, and forms 41-50% of the wt. of the rod.