Title:
【発明の名称】低温靭性の優れたクラッド鋼板の製造方法
Document Type and Number:
Japanese Patent JP2510783
Kind Code:
B2
Abstract:
A method of producing clad steel plate comprises the steps of preparing an assembly slab by superposing a stainless-steel or nickel alloy cladding material onto base metal consisting, by weight, of 0.020 to 0.06% carbon, 0.05% or less silicon, 1.0 to 1.8% manganese, 0.03% or less phosphorus, 0.005% or less sulfur, 0.08 to 0.15% niobium, 0.005 to 0.03% titanium, 0.05% or less aluminum, 0.002 to 0.006% nitrogen, and one or two elements selected from among a group consisting of 0.05 to 1.0% nickel, 0.05 to 1.0% copper, 0.05 to 0.5% chromium, 0.05 to 0.3% molybdenum and 0.001 to 0.005% calcium, with the balance being iron and unavoidable impurities, and welding its periphery; heating the slab to 1100 to 1250 DEG C; rolling the slab at a reduction ratio of 5 or more and a rolling finish temperature of 900 to 1050 DEG C; air cooling for 60 to 200 seconds; cooling the slab from a temperature of at least 750 DEG C to 550 DEG C or below at a cooling rate of 5 to 40 DEG C/sec, and following this by air cooling.
Inventors:
Hiroshi Tamehiro
Yoshinori Ogata
Yoshio Terada
Yoshinori Ogata
Yoshio Terada
Application Number:
JP32831090A
Publication Date:
June 26, 1996
Filing Date:
November 28, 1990
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B21B1/38; B21B47/00; B23K9/00; B23K20/04; B23K20/227; C22C38/00; C22C38/14; B21B3/02; (IPC1-7): B23K20/04; B23K9/00; C22C38/00
Domestic Patent References:
| JP4182080A | ||||
| JP1284405A | ||||
| JP63130283A | ||||
| JP230712A | ||||
| JP716792B2 | ||||
| JP422677B2 | ||||
| JP791584B2 |
Attorney, Agent or Firm:
Tachio Chanogi