EP 0533212 A1 19930324 - A free machining, deformed, solid steel product.
Title (en)
A free machining, deformed, solid steel product.
Title (de)
Zerspanbares, verformtes, festes Stahl-Erzeugnis.
Title (fr)
Produit solide et déformé en acier de décolletage.
Publication
Application
Priority
- EP 92118024 A 19871224
- US 3433187 A 19870403
Abstract (en)
A free machining, deformed, solid steel product made from molten steel containing dissolved oxygen, said solid steel product comprising: a microstructure including oxygen-containing, manganese sulfide inclusions; said manganese sulfide inclusions having a relatively globular shape due to the presence of 60-150 mg/kg (ppm) dissolved oxygen in the molten steel from which said steel product was made; and said microstructure being devoid of machinability impairing oxides of solid deoxidizing agents, in amounts sufficient to offset substantially the enhanced machinability resulting from said globular shape of the manganese sulfide inclusions.
IPC 1-7
IPC 8 full level
C21C 7/06 (2006.01); C21C 7/072 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP)
C21C 7/06 (2013.01); C21C 7/072 (2013.01); C22C 38/60 (2013.01)
Citation (search report)
- [AD] DE 1608752 B1 19710527 - MAXIMILIANSHUETTE EISENWERK
- [AD] DE 2823366 A1 19800103 - SALZGITTER PEINE STAHLWERKE
- [A] EP 0212856 A2 19870304 - NIPPON STEEL CORP [JP]
- [A] DD 238249 A1 19860813 - MAXHUETTE UNTERWELLENBORN [DD]
- [A] BERG- UND HüTTENMäNNISCHE MONATSHEFTE, vol. 117, no. 9, 1972, WIEN, AT pages 301 - 307 C. FINK ET AL. 'Einfluss der Herstellungsbedingungen ...'
- [A] PATENT ABSTRACTS OF JAPAN vol. 5, no. 85 (C-57)(757) 3 June 1981 & JP-A-56 029 658 ( KAWASAKI SEITETSU ) 25 March 1981
- [A] PATENT ABSTRACTS OF JAPAN vol. 5, no. 180 (C-79)(852) 19 November 1981 & JP-A-56 105 460 ( SHIN NIPPON SEITETSU ) 21 August 1981
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 92118024 A 19871224