Method for post-treatment of plated steel sheet for soldering
US5639515A · kind A · utility
4Cited by
12References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 26, 1995 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Jun 26, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/24
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.