18 lines
733 B
Markdown
18 lines
733 B
Markdown
---
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title: "Cronak process"
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chunk: 1/1
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source: "https://en.wikipedia.org/wiki/Cronak_process"
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category: "reference"
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tags: "science, encyclopedia"
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date_saved: "2026-05-05T10:46:57.426906+00:00"
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instance: "kb-cron"
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---
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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.
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== References ==
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== External links ==
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https://web.archive.org/web/20141211093127/http://www.innovateus.net/science/what-zinc-chromate-used |