Re: Re: Rust Neutralizers?

Posted by Ol Chief on December 06, 2003 at 17:24:30 from (63.246.186.23):

In Reply to: Re: Rust Neutralizers? posted by No. Ala. on December 06, 2003 at 12:10:05:

To comment on use of ospho let me say that I have personally witnessed the use of Thousands of gallons of of this material with great effectiveness.I served on deep sea merchant ships from 1944 until Oct. 2002.Ospho is the salvation of deck departments mantaining good appearance on the topside of ships.During paint application tiny air bubbles are left in the coating which later bleed rust in the presence of salt water.Paint is also rapidly oxidized and and produces a chalky surface.I spent lots of years on passenger vessels where appearance is of utmost importance.In order to c be economical Ospho is frequently cut with water 50/50 or even 25/75.At sea it is scrubbed on with a round Turks Head brush at the end of an extension pole or stick.Generally it is hosed off with a stream of fresh water after about forty five minutes.The rust and chalk are then gone leaving a clean and shining surface.Ospho is not a cure all for heavy rust scale however, small items submersed in a solution can be completely descaled if left over time,but be carefull to monitor the progress and remove and flush as soon as possible.Very very heavy scale can be removed by application of pure fish.This is (old technology)and is no longer widely known to younger marine personnel.Therefore is a lost piece of very useful and and effective information.I have seen rust scale one and a half inches thick removed from neglected heavy steel plate by use of fish oil.The oil is swobbed on lavishly and allowed to soak in for five to seven days,afterwhich time all scale can generally be picked up with a scoop shovel.The fish oil would be standing on almost raw steel plate and should then be solvent cleaned and have Ospho applied. If Ospho is applied on tractors with lightly failed paint I believe the results will be suprising if then flushed off with water.In my experience this material will often prevent new rust formation for two or more weeks if allowed to with no stand with no further treatment.

Follow Ups:

• Re: Re: Re: Rust Neutralizers? GG 18:41:34 12/06/03 (2)
  • Re: Re: Re: Re: Rust Neutralizers? Ol Chief 08:18:10 12/07/03 (1)
    • Re: Re: Re: Re: Re: Rust Neutralizers? RB/CT 14:38:34 12/08/03 (0)

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