EP 0230320 B1 19910130 - ORGANIC COATED STEEL STRIP HAVING IMPROVED BAKE HARDENABILITY AND METHOD FOR MAKING
Title (en)
ORGANIC COATED STEEL STRIP HAVING IMPROVED BAKE HARDENABILITY AND METHOD FOR MAKING
Publication
Application
Priority
- JP 1322986 A 19860124
- JP 29003586 A 19861205
Abstract (en)
[origin: EP0230320A1] An organic coated steel strip having improved bake hardenability is provided which comprises an extra low carbon-steel substrate having bake hardenability, a zinc alloy layer deposited on the substrate in a weight of 10 to 40 g/m<2>, a chromate layer formed on the zinc alloy layer in a weight of at least 10 mg/m<2> of metallic chromium, and an organic coating, optionally containing silica, attached to the chromate layer. The coated strip is prepared by depositing a zinc alloy on an extra low carbon steel substrate, subjecting the substrate to a chromate treatment in an aqueous chromate solution containing a chromate compound, a reducing agent, and an acid residue, resin or silica, and applying an organic coating on the chromate layer and baking the coating at a temperature of up to 150 DEG C.
IPC 1-7
IPC 8 full level
C23C 22/74 (2006.01); C23C 22/28 (2006.01); C23C 22/78 (2006.01); C23C 28/00 (2006.01)
CPC (source: EP KR)
C23C 22/28 (2013.01 - KR); C23C 22/74 (2013.01 - KR); C23C 22/78 (2013.01 - EP); C23C 28/00 (2013.01 - EP)
Designated contracting state (EPC)
BE DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0230320 A1 19870729; EP 0230320 B1 19910130; AU 583444 B2 19890427; AU 6785387 A 19870730; CA 1259532 A 19890919; DE 3767727 D1 19910307; ES 2020202 B3 19910801; KR 880007795 A 19880829; KR 900006812 B1 19900921
DOCDB simple family (application)
EP 87100847 A 19870122; AU 6785387 A 19870121; CA 528076 A 19870123; DE 3767727 T 19870122; ES 87100847 T 19870122; KR 870000612 A 19870124