Astro Pak is the leading provider of Ultra Pass, passivation, precision, high purity & chemical cleaning and related metal surface treatment technology. Pigging and hydrostatic testing services are also available for pipeline maintenance.
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Passivation - What You Should Know
1. Passivation- What You Should Know
Once stainless steel is cleaned, it needs to go through the passivation process. This is a chemical
process that helps to eliminate oxidation and ensure that the stainless steel is in its best shape
possible to be used for food and other manufacturing and transportation needs. This process is
done to make the surface resistant to corrosion, or more passive, so that it can be used effectively
and safely. Passivation is performed using materials like citric acid to ensure that the iron and
iron compounds are removed from the surface, but the treatment ensures that the stainless steel
itself isn't affected.
In some cases, passivation of stainless steel will include the process of electropolishing. This
process allows for a much more effective result because it uses electrochemical technology to
produce the best results. Between the chemical cleansing and the polishing stages, stainless steel
can be kept cleaner and made ready for use in a variety of different situations. During the
handling and processing of stainless steel, things can cause abrasive particles to become
embedded in the stainless steel, which is where the process of polishing becomes so helpful to
ensuring that the material is prepared accordingly for any type of situation that it may face.
In some cases, stainless steel is used to transport liquids and other materials that leave a greasy
residue on it. This is when the vapor degreaser comes into play. This process includes using
solvents in vapor form to remove the grease from the surface of the stainless steel, further
cleaning it and making it more ready for the next task at hand. All together, these steps are
designed to ensure that stainless steel is all ready to use for whatever it is going to be used for, no
matter what type of situation that might be.
With passivation of stainless steel, a lot of things can happen. Companies that deal with any type
of stainless steel materials for foods and liquid consumables need to make sure that these
processes are always followed carefully for the best results. Of course, there is also a need for
this process in some other applications. No matter what the process is used for, it is an effective
one and a necessary step for proper use of stainless steel holding and processing containers of all
types. There are a variety of ways to approach this situation, depending on a company's specific
needs, but the basic process is always the same.
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