Method for post-treatment of plated steel sheet for soldering

Details Method for post-treatment of plated steel sheet for soldering Method for post-treatment of plated steel sheet for soldering

1995-06-26

1997-06-17

Lusignan, Michael

Coating processes

With pretreatment of the base

Metal base

205196, 2281801, 228214, 427334, 4273884, 427404, 427417, B05D 302, B05D 312

Patent

active

056395159

ABSTRACT:
Electroplated steel sheet suitable for soldering is provided herein by coating the plated steel sheet with a post-treatment solution in the range of 0.02 to 2 .mu.m in dry thickness. The post-treatment solution contains from 2 to 100 g/l of at least one water-soluble or water-dispersed material. The post-treatment solution may further contain chromium ion, hereafter referred to as Cr.sup.6+, from 0.01 to 3 g/l, and/or organic amine soap from 10 to 100 g/l. A suitable pH value of the post-treatment solution is from 3 to 10.

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Silman, H. et al, Protective and Decorative Coatings for Metals, Finishing Publications, Ltd., Teddington, Middlesex, England, 1978.

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