B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
148/20, 117/95
B32B 15/08 (2006.01) B05D 7/16 (2006.01) C23C 22/78 (2006.01) C23C 28/00 (2006.01)
Patent
CA 1259532
ABSTRACT OF THE DISCLOSURE 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/m2, a chromate layer formed on the zinc alloy layer in a weight of at least 10 mg/m2 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°C.
528076
Ichida Toshio
Kobayashi Shigeru
Mouri Taizo
Obara Takashi
Tsugawa Shunichi
Kawasaki Steel Corporation
Moffat & Co.
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