Global Patent Index - EP 1283914 B1

EP 1283914 B1 20040630 - METHOD AND DEVICE FOR PICKLING HOT-ROLLED SPECIAL STEEL STRIPS

Title (en)

METHOD AND DEVICE FOR PICKLING HOT-ROLLED SPECIAL STEEL STRIPS

Title (de)

VERFAHREN UND EINRICHTUNG ZUM BEIZEN VON EDELSTAHLWARMBÄNDERN

Title (fr)

PROCEDE ET DISPOSITIF POUR LE DECAPAGE DE FEUILLARDS D'ACIER SPECIAL LAMINES A CHAUD

Publication

EP 1283914 B1 20040630 (DE)

Application

EP 01938180 A 20010505

Priority

  • DE 10022083 A 20000508
  • EP 0105118 W 20010505

Abstract (en)

[origin: US6843860B2] The invention relates to a method for pickling hot-rolled special steel strips (1) having an austenite, ferrite and/or martensite structure. The inventive method is carried out in a pickling line (7) with pickling sections (8) containing acids and rinsing sections (9) containing rinsing water (15). The aim of the invention is to provide a method that does not require an additional stretch-leveling step for descaling. The costs for pickling are reduced by pickling the hot-rolled special steel strip (1) in the pickling sections (8) with hydrochloric acid (13) and rinsing it in the first rinsing sections (9) with azotic acid (14) or an equivalent substitute pickling medium (14b) and treating it in further rinsing sections (9) with rinsing water (15).

IPC 1-7

C23G 1/08

IPC 8 full level

C23G 1/08 (2006.01); C23G 3/02 (2006.01)

CPC (source: EP KR US)

C23G 1/08 (2013.01 - EP KR US)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 0186024 A2 20011115; WO 0186024 A3 20021107; AT E270354 T1 20040715; CA 2406647 A1 20021028; CN 1281789 C 20061025; CN 1439063 A 20030827; DE 10022083 A1 20011115; DE 50102747 D1 20040805; EP 1283914 A2 20030219; EP 1283914 B1 20040630; ES 2223866 T3 20050301; JP 2004511649 A 20040415; KR 20020091279 A 20021205; MX PA02011004 A 20030425; TR 200401642 T4 20040823; US 2003178045 A1 20030925; US 6843860 B2 20050118; ZA 200209827 B 20031007

DOCDB simple family (application)

EP 0105118 W 20010505; AT 01938180 T 20010505; CA 2406647 A 20010505; CN 01809243 A 20010505; DE 10022083 A 20000508; DE 50102747 T 20010505; EP 01938180 A 20010505; ES 01938180 T 20010505; JP 2001582607 A 20010505; KR 20027014938 A 20021107; MX PA02011004 A 20010505; TR 200401642 T 20010505; US 25890902 A 20021030; ZA 200209827 A 20021204