Producing a spring made of cobalt-nickel-chromium-molybdenum alloy, useful for mechanical movement, comprises e.g. melting alloy, deoxidizing molten alloy by adding cerium, and determining the content of cerium of the molten alloy

摘要

Producing a spring made of cobalt-nickel-chromium-molybdenum alloy, comprises melting an alloy (I), deoxidizing the molten alloy by adding cerium in excess, determining the content of cerium of the molten alloy and comparing with a predetermined threshold value, casting the molten alloy, when the determined content of cerium is less than the predetermined threshold value, forming the decanted alloy into a slab, hot deforming the slab into a wire, cold forming the wire, rolling the wire into a band, forming a spring from the band, and curing the spring. Producing a spring made of cobalt-nickel-chromium-molybdenum alloy for mechanical movement, comprises melting an alloy of formula (Ni aCr bMo cW dTi eNb fTa gAl hFe iMn kSi lC mBe nB oCo p) (I), deoxidizing the molten alloy by adding cerium in excess, determining the content of cerium of the molten alloy and comparing with a predetermined threshold value, casting the molten alloy, when the determined content of cerium is less than the predetermined threshold value, forming the decanted alloy into a slab, hot deforming the slab into a wire, cold forming the wire, rolling the wire into a band, forming a spring from the band, and curing the spring. a : 40-20 wt.%; b : 18-22 wt.%; c+1/2d : 6-12 wt.%; e : 0-1 wt.%; f+1/2g : 0-1 wt.%; h : 0-0.2 wt.%; i : 0-7 wt.%; k : 0-0.9 wt.%; l : 0-0.4 wt.%; m : 0-0.05 wt.%; n : 0-0.3 wt.%; and o : 0-0.01 wt.%. An independent claim is also included for the spring for mechanical movement, where the spring is crystalline alloy (I).