C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
75/140
C21D 7/13 (2006.01) B21B 1/22 (2006.01) B21B 27/00 (2006.01) C22C 37/08 (2006.01) B21B 1/16 (2006.01)
Patent
CA 1083858
Abstract of the Disclosure This invention is directed to an improved composite martensitic nodular chill-cast iron roll and to the use of such roll in a method of hot reducing ferrous and ferrous alloy products, such as plates, strip, bars and rods, where such products are heated to temperatures in excess of 1900°F and subsequently reduced at temperatures within the range of about 900°F and the initial heating temperature. More particularly, this invention relates to the method of effecting said hot reducing at such temperatures by means of composite, martensitic, nodular graphite chill cast iron rolls. Such rolls are characterized by (1) an average surface hardness of at least about 76 Shore-C, (2) a thermal-crack-resistant chill cast surface portion consisting essentially of, by weight, about 3.00% to 3.70% carbon, about 0.34% to 1.25% manganese, about 1.0% to 2.0% silicon, about 3.75% to 5.75% nickel, about 0.75% to 1.35% chromium, about 0.40 to 1.10% molybdenum, about 0.03% to 0.08% magnesium, balance iron and incidental impurities, and (3) a core portion comprising a ferrous alloy.
264304
Gibbon John A.
Horvath Paul J. Jr.
Bethlehem Steel Corporation
Smart & Biggar
LandOfFree
Method of hot reducing ferrous and ferrous alloy products... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of hot reducing ferrous and ferrous alloy products..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of hot reducing ferrous and ferrous alloy products... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-978541