Weld gun arm casting
AssigneeBrush Wellman Inc.
InventorsSabit Ali, David D. Brown, A Murray Patterson
Life of this patent
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Abstract
An alloy for making weld gun arm castings comprises about 0.35 to 0.8 wt. % Be, about 0.2 to 0.9 wt. % Co and about 1.5 to 2.4 wt. % Ni, with the balance being Cu and incidental impurities, the (Ni+Co)/Be ratio in the alloy being at least about 4.
Claims11
A weld gun arm casting comprising an unwrought body having a distal end for mounting a resistance electrode and a proximal end for attaching to the robotic assembly of a robotic welder, the casting being made from a BeNiCu alloy comprising about 0.35 to 0.8 wt. % Be, about 0.2 to 0.9 wt. % Co and about 1.5 to 2.4 wt. % Ni, with the balance being Cu and incidental impurities, the (Ni+Co)/Be ratio in the alloy being at least about 4.
A process for producing a weld gun arm casting exhibiting excellent fatigue resistance and long useful life, the process comprising forming the casting from a BeNiCu alloy comprising about 0.4 to 0.7 wt. % Be, about 0.3 to 0.8 wt. % Co and about 1.7 to 2.2 wt. % Ni, with the balance being Cu and incidental impurities, the (Ni+Co)/Be ratio in the alloy being about 4 to 7.
Dependencies are inferred from the claim text.