EP 4035787 A4 20221102 - METHOD FOR ROLLING SUPER AUSTENITIC STAINLESS STEEL
Title (en)
METHOD FOR ROLLING SUPER AUSTENITIC STAINLESS STEEL
Title (de)
VERFAHREN ZUM WALZEN VON SUPERAUSTENITISCHEM ROSTFREIEM STAHL
Title (fr)
PROCÉDÉ DE LAMINAGE D'ACIER INOXYDABLE SUPER-AUSTÉNITIQUE
Publication
Application
Priority
- CN 201910902611 A 20190923
- CN 2020096958 W 20200619
Abstract (en)
[origin: EP4035787A1] The present invention discloses a method for rolling super austenitic stainless steel, and belongs to the technical field of steel rolling. Through technical optimization of billet selection, a steel burning process, a descaling process, a steel rolling process and a straightening process in the method, rolling of super austenitic stainless steel with the specifications of a thickness of below 10 mm and a width of above 2500 mm is achieved, and a steel plate with an N08367 grade of steel with the specifications of a thickness of 8.5 mm and widths of 2510 mm and 2610 mm is rolled successfully. This specification is the widest specification in the world under this thickness, filling a gap in a width range of 2510 to 2610 mm for the N08367 grade of steel at the thickness of 8.5 mm, moreover, a rolled plate shape is stable, and a rolling success rate reaches 95.4%. In addition, N08904 stainless steel with a thickness of 10.0 mm and a width range of 2620 to 2980 mm is further rolled successfully.
IPC 8 full level
B21B 1/38 (2006.01); B21B 1/00 (2006.01); B21B 37/00 (2006.01); B21B 45/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01)
CPC (source: CN EP KR)
B21B 1/38 (2013.01 - CN KR); B21B 37/28 (2013.01 - CN KR); B21B 37/58 (2013.01 - CN KR); B21B 37/74 (2013.01 - CN KR); B21B 45/004 (2013.01 - CN KR); B21B 45/04 (2013.01 - CN KR); C21D 6/004 (2013.01 - EP); C21D 8/0205 (2013.01 - EP); C21D 8/021 (2013.01 - EP); C21D 8/0226 (2013.01 - EP); C21D 8/0242 (2013.01 - EP); C21D 9/46 (2013.01 - EP); C21D 11/00 (2013.01 - EP); C22C 38/00 (2013.01 - EP); C21D 2211/001 (2013.01 - EP)
Citation (search report)
- [I] CN 107419194 A 20171201 - ZHENSHI GROUP EASTERN SPECIAL STEEL CO LTD
- [A] CN 104275350 A 20150114 - ZHENSHI GROUP EASTERN SPECIAL STEEL CO LTD
- See also references of WO 2021057117A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4035787 A1 20220803; EP 4035787 A4 20221102; CN 110773565 A 20200211; CN 110773565 B 20210810; KR 20220061151 A 20220512; WO 2021057117 A1 20210401
DOCDB simple family (application)
EP 20866991 A 20200619; CN 201910902611 A 20190923; CN 2020096958 W 20200619; KR 20227010554 A 20200619