EP 0094808 B1 19851121 - METHOD OF BOX-ANNEALING STEEL SHEET TO MINIMIZE ANNEALING STICKERS
Title (en)
METHOD OF BOX-ANNEALING STEEL SHEET TO MINIMIZE ANNEALING STICKERS
Publication
Application
Priority
US 37804782 A 19820514
Abstract (en)
[origin: EP0094808A1] In the box annealing of steel sheet, the tendency for adjacent wraps of the sheet to pressure weld (stick) is decreased or eliminated by passing the sheet, prior to annealing, through a rinse containing from 1,500 to 10,000 ppm of the magnesium or calcium salts of soluble carboxylic acids, preferably formates. Further benefits are realized if the sheet is electro-cleaned with a silicate containing cleaning solution, and thereafter rinsed in the formate solution whereby the latter acts to fix the concentration of silicates remaining on the surface of the sheet.
IPC 1-7
IPC 8 full level
C21D 1/26 (2006.01); C21D 1/70 (2006.01); C21D 9/46 (2006.01); C21D 9/663 (2006.01)
CPC (source: EP KR)
C21D 1/26 (2013.01 - KR); C21D 1/70 (2013.01 - EP); C21D 9/46 (2013.01 - EP)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0094808 A1 19831123; EP 0094808 B1 19851121; AU 1453883 A 19831117; BR 8302507 A 19840117; CA 1198708 A 19851231; DE 3361283 D1 19860102; ES 522379 A0 19840501; ES 8404713 A1 19840501; JP S5953635 A 19840328; KR 840004790 A 19841024
DOCDB simple family (application)
EP 83302724 A 19830513; AU 1453883 A 19830513; BR 8302507 A 19830513; CA 427899 A 19830511; DE 3361283 T 19830513; ES 522379 A 19830513; JP 8288983 A 19830513; KR 830002072 A 19830513