733 B
733 B
| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Cronak process | 1/1 | https://en.wikipedia.org/wiki/Cronak_process | reference | science, encyclopedia | 2026-05-05T10:46:57.426906+00:00 | kb-cron |
The Cronak process is a conventional chromate conversion coating process developed in 1933 by The New Jersey Zinc Company. It involves immersing a zinc or zinc-plated article for 5 to 15 seconds in a chromate solution, typically prepared from sodium dichromate and sulfuric acid. The process was patented in the United States on March 24, 1936 with USPTO number 2,035,380.
== References ==
== External links == https://web.archive.org/web/20141211093127/http://www.innovateus.net/science/what-zinc-chromate-used