Phosphoric acid as metal pretreatment

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(Reasons for using phosphoric acid)
(Ospho)
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#Once Ospho has dried, there is no longer any acid on the surface to react with paint.
 
#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 ,light water rinsewith a damp towel or a wax & grease remover will remove any dust-like reaction particles.
+
#Ospho is totally neutralized by reaction with both the rust particles and the steel underneath.  
#Because Ospho is water-based, the water can hide in nooks and crannies, causing adhesion failure of primer always make sure metal is dry before using ospho or priming
+
#Because Ospho is water-based, the water can hide in nooks and crannies, causing adhesion failure of primer
*sand or scuff before priming then use a wax & grease remover to clean
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====Application tips====
 +
*A quick, light water rinse with a damp towel or a wax and grease remover will remove any dust-like reaction particles.
 +
*Always make sure metal is dry before using ospho or priming.
 +
*Sand or scuff before priming then use a wax and grease remover to clean.
  
 
==Naval jelly==
 
==Naval jelly==

Revision as of 15:20, 25 March 2010

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