Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1977-12-29
1980-09-23
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75126C, 75126E, 75126F, 75126H, 75126J, C22C 3902
Patent
active
042240603
ABSTRACT:
This invention relates to hard alloys with a chemical composition by weight of 0.7 to 1.5% carbon; 0.1 to 1.0% silicon; 0.15 to 0.50% manganese; 0.03% maximum phosphorus; 0.20% maximum sulphur; 3.5 to 6.0% chromium; 0 to 10% molybdenum; 0 to 10% tungsten; 0 to 4.0% vanadium; 0.1 to 7.0% niobium; 0.2 to 12% cobalt; 0.08% maximum nitrogen; 0.25% maximum aluminum, the balance being iron, and which alloys contain in their raw melt structure and after hot deformation, individual (segregated) single niobium carbides or individual (segregated) double niobium and vanadium carbides, with a morphology controllable by the fabrication technique. After a suitable heat treatment, such alloys have an improved machinability performance over the conventional alloys (containing no niobium).
REFERENCES:
patent: 3833360 (1974-09-01), Giflo et al.
patent: 3901690 (1975-08-01), Philip et al.
patent: 3907553 (1975-09-01), Nagumo et al.
patent: 4036640 (1977-07-01), Philip et al.
patent: 4116684 (1978-09-01), Uchida et al.
Roberts et al.; "Tool Steels", ASM, 1962, pp. 707-713.
Barbosa Celso A.
de Souza Marcos H. C.
Falleiros Ivan G. S.
Mori Fabio Y.
Viertler Werner
Acos Villares S.A.
Andrews M. J.
Groff, Jr. Emory L.
LandOfFree
Hard alloys does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hard alloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hard alloys will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-642657