C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 38/04 (2006.01) B22D 11/06 (2006.01) B22D 11/124 (2006.01) B22D 11/22 (2006.01) C21D 9/46 (2006.01) C22C 38/00 (2006.01) C21D 1/84 (2006.01)
Patent
CA 2138801
A thin steel sheet having a structure comprising at least one member selected from a transgranular acicular ferrite and a bainite having a packet size of 30 to 300 µm, in a proportion of not less than 95% of the structure, is produced by subjecting a steel comprising, in terms of % by weight, 0.01 to 0.20% of C, 0.005 to 1.5% of Si, 0.05 to 1.5% of Mn and not more than 0.03% of S and optionally 0.0005 to 0.0100% of Ca or 0.005 to 0.050% of REM with the balance consisting of Fe and unavoidable impurities to continuous casting into a thin cast strip having a casting thickness in the range of from 0.5 to 5 mm, cooling the thin cast strip from the temperature range of from the casting temperature to 900°C to the temperature range of from 650 to 400°C at an average cooling rate of not less than V (°C/sec) represented by the following formula (1); and coiling the cooled strip at a temperature of not more than 650°C: log V ~ 0.5 - 0.8 log Ceq (°C/sec) ..... (1) wherein Ceq = C + 0.2Mn.
Akamatsu Satoshi
Matsumura Yoshikazu
Goudreau Gage Dubuc
Nippon Steel Corporation
LandOfFree
Thin steel sheet having excellent stretch-flange ability and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thin steel sheet having excellent stretch-flange ability and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thin steel sheet having excellent stretch-flange ability and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1378548