EP0378705A4 - Process for producing thin cr-ni stainless steel sheet excellent in both surface quality and quality of material - Google Patents

Process for producing thin cr-ni stainless steel sheet excellent in both surface quality and quality of material

Info

Publication number
EP0378705A4
EP0378705A4 EP19890908266 EP89908266A EP0378705A4 EP 0378705 A4 EP0378705 A4 EP 0378705A4 EP 19890908266 EP19890908266 EP 19890908266 EP 89908266 A EP89908266 A EP 89908266A EP 0378705 A4 EP0378705 A4 EP 0378705A4
Authority
EP
European Patent Office
Prior art keywords
stainless steel
steel sheet
quality
sheet excellent
producing thin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19890908266
Other versions
EP0378705B1 (en
EP0378705B2 (en
EP0378705A1 (en
Inventor
Masanori Nippon Steel Corporation R&D Ueda
Shinichi Nippon Steel Corporation R&D Teraoka
Hidehiko Nippon Steel Corporation Sumitomo
Toshiyuki Nippon Steel Corporation Suehiro
Masayuki Nippon Steel Corporation R&D Abe
Shigeru Nippon Steel Corporation Minamino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27528474&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0378705(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP63169095A external-priority patent/JPH0730405B2/en
Priority claimed from JP63221472A external-priority patent/JPH0730407B2/en
Priority claimed from JP22147188A external-priority patent/JPH0730406B2/en
Priority claimed from PCT/JP1989/000692 external-priority patent/WO1990000454A1/en
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP0378705A1 publication Critical patent/EP0378705A1/en
Publication of EP0378705A4 publication Critical patent/EP0378705A4/en
Publication of EP0378705B1 publication Critical patent/EP0378705B1/en
Publication of EP0378705B2 publication Critical patent/EP0378705B2/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Continuous Casting (AREA)

Abstract

The invention relates to a process for producing a thin cast piece of Cr-Ni stainless steel sheet of nearly the same thickness as that of final products by a synchronous continuous casting process which comprises conducting quenching of the thin cast piece just after casting in a high-temperature region, hot or cold processing of said piece, annealing, etc. to thereby reduce the size of gamma grains and cooling in a lower temperature region at 900 DEG C or below to thereby prevent precipitation of chromium carbide in a grain boundary. This process enables roping or uneven luster on the surface of stainless steel sheet to be depressed.
EP89908266A 1988-07-08 1989-07-10 PROCESS FOR PRODUCING THIN Cr-Ni STAINLESS STEEL SHEET EXCELLENT IN BOTH SURFACE QUALITY AND QUALITY OF MATERIAL Expired - Lifetime EP0378705B2 (en)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP16909488 1988-07-08
JP63169095A JPH0730405B2 (en) 1988-07-08 1988-07-08 Method for producing Cr-Ni type stainless steel thin plate with excellent surface quality
JP16909588 1988-07-08
JP16909688 1988-07-08
JP169095/88 1988-07-08
JP221472/88 1988-09-06
JP22147188A JPH0730406B2 (en) 1988-07-08 1988-09-06 Method for producing Cr-Ni stainless steel sheet with excellent surface quality and material
JP22147288 1988-09-06
JP63221472A JPH0730407B2 (en) 1988-07-08 1988-09-06 Method for producing Cr-Ni type stainless steel thin plate with excellent surface quality
JP22147188 1988-09-06
JP221471/88 1988-09-06
PCT/JP1989/000692 WO1990000454A1 (en) 1988-07-08 1989-07-10 PROCESS FOR PRODUCING THIN Cr-Ni STAINLESS STEEL SHEET EXCELLENT IN BOTH SURFACE QUALITY AND QUALITY OF MATERIAL

Publications (4)

Publication Number Publication Date
EP0378705A1 EP0378705A1 (en) 1990-07-25
EP0378705A4 true EP0378705A4 (en) 1991-09-04
EP0378705B1 EP0378705B1 (en) 1996-01-31
EP0378705B2 EP0378705B2 (en) 1999-09-15

Family

ID=27528474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908266A Expired - Lifetime EP0378705B2 (en) 1988-07-08 1989-07-10 PROCESS FOR PRODUCING THIN Cr-Ni STAINLESS STEEL SHEET EXCELLENT IN BOTH SURFACE QUALITY AND QUALITY OF MATERIAL

Country Status (1)

Country Link
EP (1) EP0378705B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463182B2 (en) * 1990-01-17 2001-08-22 Nippon Steel Corporation METHOD OF MANUFACTURING Cr-Ni STAINLESS STEEL SHEET EXCELLENT IN SURFACE QUALITY AND MATERIAL THEREOF
JPH082484B2 (en) * 1990-10-19 1996-01-17 新日本製鐵株式会社 Austenitic stainless steel strip-shaped slab with excellent surface quality, thin plate manufacturing method, and strip-shaped slab
US5281284A (en) * 1991-08-28 1994-01-25 Nippon Steel Corporation Process for producing thin sheet of Cr-Ni-based stainless steel having excellent surface quality and workability
DE69419593T3 (en) † 1993-11-18 2005-06-09 Castrip, Llc (N.D.Ges.D. Staates Delaware) MOLDING A CONTINUOUS STEEL STRIP TO A SURFACE OF SPECIFIC ROUGHNESS
IT1294228B1 (en) * 1997-08-01 1999-03-24 Acciai Speciali Terni Spa PROCEDURE FOR THE PRODUCTION OF AUSTENITIC STAINLESS STEEL BELTS, AUSTENITIC STAINLESS STEEL BELTS SO

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6026807B2 (en) * 1981-03-18 1985-06-26 新日本製鐵株式会社 Processing method for continuously cast austenitic stainless steel slabs
JPS62124220A (en) * 1985-07-17 1987-06-05 Nippon Steel Corp Manufacture of stainless steel plate

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 353 (C-457)[2800], 18th November 1987; & JP-A-62 124 220 (NIPPON STEEL) 05-07-1987 *
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 261 (C-141)[1139], 21st December 1982; & JP-A-57 155 322 (SHIN NIPPON SEITETSU) 25-09-1982 *
See also references of WO9000454A1 *

Also Published As

Publication number Publication date
EP0378705B1 (en) 1996-01-31
EP0378705B2 (en) 1999-09-15
EP0378705A1 (en) 1990-07-25

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