Phosphoric acid as metal pretreatment
(→Brands of phosphoric acid-based metal pretreatments used for automotive work) |
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==Brands of phosphoric acid-based metal pretreatments used for automotive work== | ==Brands of phosphoric acid-based metal pretreatments used for automotive work== | ||
| − | + | ===Ospho=== | |
| + | Ospho contains 75% phosphoric acid. According to Ospho's, as detailed in [http://www.hotrodders.com/forum/ospho-factory-response-173513.html#post1234300 this post]: | ||
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| + | #Once Ospho has dried, there is no longer any acid on the surface to react with paint. | ||
| + | #Ospho is totally neutralized by reaction with both the rust particles and the steel underneath. A quick water rinse will remove any dust-like reaction particles. | ||
| + | #Because Ospho is water-based, the water can hide in nooks and crannies, causing adhesion failure of primer. | ||
==Naval jelly== | ==Naval jelly== | ||
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