Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1980-06-18
1982-03-30
Skiff, Peter K.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75128W, C22C 3822, C22C 3832
Patent
active
043222471
ABSTRACT:
An alloy steel having superior ductility and a low rate of work hardening for use in severe cold forming processes to provide products with high static and dynamic strength, the alloy steel consisting essentially of from about 0.28% to about 0.33% by weight carbon, from about 0.25% to about 0.65% by weight manganese, up to about 0.15% by weight silicon, from about 0.0005% to about 0.0035% by weight boron, from about 0.4% to about 0.7% by weight nickel, from about 0.4% to about 0.6% by weight chromium, from about 0.15% to about 0.25% by weight molybdenum, and the remainder being iron with minor amounts of impurities and additional alloying elements; a high strength forged tool made from the alloy steel; and the method of forming high strength forged tools including the steps of providing a solid metal slug of the alloy steel, annealing the metal slug for spheroidization to a hardness in the range R.sub.B 70 to R.sub.B 76, cold forming the annealed metal slug into the final shape of the tool, and thereafter heat hardening the formed tool to a hardness in the range R.sub.C 48 to R.sub.C 52, the annealed yield strength being in the range of from about 39,290 PSI to about 43,290 PSI and the reduction of area being in the range of from about 70% to about 74%.
REFERENCES:
patent: 2798805 (1957-07-01), Hodge et al.
patent: 2861908 (1958-11-01), Mickelson et al.
patent: 3418110 (1968-12-01), Goda et al.
patent: 3489620 (1970-01-01), Current
patent: 3574602 (1971-04-01), Gondo et al.
patent: 3615370 (1971-10-01), Ridal et al.
patent: 3907614 (1975-09-01), Bramfitt et al.
patent: 4061013 (1977-12-01), Kuc
Skiff Peter K.
Snap-on Tools Corporation
LandOfFree
Alloy steel for severe cold forming does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alloy steel for severe cold forming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alloy steel for severe cold forming will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-381123