Title (en)

COLD-ROLLED SHEET AND HOT-GALVANIZED COLD-ROLLED SHEET, BOTH EXCELLENT IN BAKE HARDENING, COLD NONAGING AND FORMING PROPERTIES, AND PROCESS FOR PRODUCING THE SAME

Title (de)

Kaltgewalztes Stahlblech, gegebenenfalls feuerverzinkt, mit guter Einbrenn-härtbarkeit, gute Kaltalterungsbeständigkeit und Formbarkeit und Verfahrenzur Herstellung dieser Bleche

Title (fr)

FEUILLE LAMINEE A FROID, EVENTUELLEMENT GALVANISEE A CHAUD, AUX QUALITES DE SECHAGE DE PEINTURE A CHAUD, DE NON-VIEILLISSEMENT A FROID ET DE FORMAGE EXCELLENTES, ET PROCEDE DE PRODUCTION

Publication

EP 0620288 B1 20001122 (EN)

Application

EP 93919599 A 19930831

Priority

• JP 4410893 A 19930304
• JP 9301231 W 19930831
• JP 23230192 A 19920831
• JP 23231992 A 19920831

Abstract (en)

[origin: EP0620288A1] A cold-rolled sheet or a hot-galvanized, cold-rolled sheet having high paint bake hardening and cold nonaging properties and being excellent in the forming properties such as an average r value (deep drawing characteristics) and elongation (bulging characteristics) is produced by annealing an ultralow-carbon steel itself or one containing at least either titanium or niobium above the Ac3 transformation point to thereby give thereto a single-phase structure of low-temperature transformation product. As regards the paint bake hardening properties, it is possible to realize a BH value as high as about 10 kgf/mm<2>. <IMAGE>

IPC 1-7

C22C 38/06; C22C 38/14; C21D 8/02; C21D 9/46; C23C 2/06; C22C 38/12

IPC 8 full level

C21D 8/04 (2006.01)

CPC (source: EP)

C21D 8/0426 (2013.01); C21D 8/0436 (2013.01); C21D 8/0473 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0620288 A1 19941019; EP 0620288 A4 19950125; EP 0620288 B1 20001122; DE 69329696 D1 20001228; DE 69329696 T2 20010613; KR 0121737 B1 19971204; WO 9405823 A1 19940317

DOCDB simple family (application)

EP 93919599 A 19930831; DE 69329696 T 19930831; JP 9301231 W 19930831; KR 19940701435 A 19940429