Title (en)

CALCIUM-CONTAINING GRAPHITE STEEL HAVING EXCELLENT MACHINABILITY, AND MANUFACTURING METHOD THEREFOR

Title (de)

CALCIUMHALTIGER GRAPHITSTAHL MIT HERVORRAGENDER BEARBEITBARKEIT UND HERSTELLUNGSVERFAHREN DAFÜR

Title (fr)

ACIER GRAPHITIQUE CONTENANT DU CALCIUM AYANT UNE EXCELLENTE USINABILITÉ ET PROCÉDÉ DE FABRICATION ASSOCIÉ

Publication

EP 4421201 A1 20240828 (EN)

Application

EP 22907895 A 20221213

Priority

• KR 20210178349 A 20211214
• KR 2022020233 W 20221213

Abstract (en)

The present invention relates to a graphite steel having excellent machinability, and a manufacturing method therefor, and more specifically, to a calcium-containing graphite steel having machinability superior to that of normal free-cutting steel and a manufacturing method therefor.

IPC 8 full level

C22C 38/02 (2006.01); B21B 1/16 (2006.01); C21D 5/14 (2006.01); C21D 8/02 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/14 (2006.01); C22C 38/60 (2006.01)

CPC (source: EP KR)

B21B 1/16 (2013.01 - KR); C21D 1/26 (2013.01 - EP); C21D 5/14 (2013.01 - KR); C21D 6/008 (2013.01 - EP); C21D 8/0226 (2013.01 - KR); C21D 8/065 (2013.01 - EP); C21D 9/525 (2013.01 - EP KR); C22C 38/001 (2013.01 - EP KR); C22C 38/002 (2013.01 - EP); C22C 38/02 (2013.01 - EP KR); C22C 38/04 (2013.01 - EP KR); C22C 38/06 (2013.01 - EP KR); C22C 38/14 (2013.01 - EP KR); C22C 38/60 (2013.01 - EP KR); C21D 2211/005 (2013.01 - EP); C21D 2211/009 (2013.01 - KR)

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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4421201 A1 20240828; CN 118355141 A 20240716; KR 20230089718 A 20230621; WO 2023113428 A1 20230622

DOCDB simple family (application)

EP 22907895 A 20221213; CN 202280079784 A 20221213; KR 20210178349 A 20211214; KR 2022020233 W 20221213