La mia non vuol essere una pubblicità di nessun genere anche perché in tasca non me ne viene assolutamente nulla.
Ho semplicemente provato il prodotto e volevo condividere con voi le mie impressioni.
Ho usato come test una fibbia da zaino, credo della seconda guerra mondiale, molto ossidata e quella che credo sia una caraffa giocattolo in latta o lamiera stagninata dei primi del '900.
La prima è coperta dal classico ossido che si crea sul ferro dopo molto tempo in ambienti umidi o sotto terra, ho dei ferri di cavallo che hanno la stessa ruggine.
La caraffina invece l'aveva mio nonno in cantina da chissà quanti anni e quindi è sempre stata al coperto in ambiente più salubre, allo stesso tempo però il materiale è molto più debole essendo un lamierino sottile.
Non so se questo possa influenzare i risultati del prodotto, giudicate voi.
Ho messo il tutto a bagno in una soluzione acquosa di prodotto. Ho usato 3 parti di evaporust e 1 di acqua circa.
Ho fatto una prova su una fibbia più o meno dello stesso tipo della precedente e nelle stesse condizioni.
Ho però stavolta usato evaporust puro.
Le condizioni iniziali erano queste
In recent days I have had the opportunity to try the famous rust removal product marketed in Italy by http://www.envirem.it/
Mine is not an advertisement, because in my pocket I do is absolutely nothing.
I just tested the product and would like to share with you my impressions.
I used as test a backpack buckle, I think World War II, much oxidized and what I believe is a toy jug tin or sheet stagninata the early '900.
The first is covered by the classic oxide that is created on the iron after a long time in damp areas or in the ground, I have horseshoes that have the same rust.
The jug was my grandfather's cellar from who knows how many years and therefore has always been covered in a healthier environment at the same time, however, the material is much weaker being a thin sheet.
I do not know if this will affect the results, judge for yourself.
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I put everything to soak in an aqueous solution of the product. I used 3 parts of evaporust and 1 of water.
The instruction is written not to overdo it with the solution and not go beyond the one to one.
The reaction time is very slow so make yourself comfortable. The instructions show a half-hour bath for light oxidation or surface browning and up to 48 hours for heavier oxidation. The specifications state that with a liter of pure product can remove up to 60 grams of rust.
After 24 hours and lightly brushed on the buckle, the result is still not acceptable in my view, on the jug where the oxide layer was thin has been completely removed.
After 48 hours and lightly brushed on the buckle we arrived on iron, on the jug not seen in pictures but holes have appeared due to the rust which had passed from side to side.
In conclusion we can say that it is a product that is known to work well on delicate objects where you want to have a control of the reaction and have no risk of ruining the object. Also it goes very well for products that still have original paint and we do not eliminate it. Beware of paint to metal oxides that may be affected. A point in its favor is the complete neutrality and biodegradability. To his detriment in my opinion is the price of around € 7-8 per liter.
An alternative method, a little less expensive, to remove thin layers of rust and save the paint is cleaning with oxalic acid found here:
In my opinion on objects where the rust is heavy and can we not want to make too much trouble to use methods a little faster as electrolysis which costs us almost € 0.
When the object is very crude and there are no risks of damage do I put everything in the bath in a solution of hydrochloric acid for a few hours and the result is guaranteed.
Unfortunately with acids is always necessary to make a neutralization washing also, if we forget to remove the object from the washing, the reaction continues compromising the integrity of the object.
I made this very simplified table that collects and compares the different methods of removal and cleaning of encrusted objects from rust.
Update to 10/14/2015
I did a test on a buckle of the same type of the previous year and in the same conditions.
But I have used pure evaporust.
The initial conditions were these
As you see we got the iron but in some areas there are still hard deposits. I would say that for the time spent I expected to find the naked iron.