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(COVID-19) In support of manufacturing supply chains and healthcare sectors, all Astro Pak facilities are open and providing continuous service to our customers.

Electrolytic Cleaning and Electropolishing Compared

March 20, 2020

At first glance electrolytic cleaning and electropolishing look to be identical procedures. They both involve creating an electrical circuit between the stainless steel being processed and the tool being passed over it. Furthermore, both processes use the same electrolytic cleaning solution to aid in removing the contaminants. However, the two procedures not only have different…

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Posted by Mike Montgomery Category: Blog
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Electrolytic Cleaning for Quick Removal of Rouge

February 24, 2020

Stainless steel’s utility is, as its name implies, largely due to its ability to remain corrosion-free where other materials would react to the substances they come in contact with. However, even with this well-known resistance, rust can still form on stainless steel surfaces. Known as “rouge” it rests on the surface of the stainless steel,…

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Posted by Mike Montgomery Category: Blog
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What Determines the Best Food Grade Stainless Steel?

February 17, 2020

Not long after its initial development in the first decades of the 20th century, stainless steel was soon incorporated into the food making process. Its resistance to corrosion, the ease with which it can be cleaned and sterilized with steam, and its lack of a need of a protective surface coating have all led to…

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Posted by Daryl L. Roll Category: Blog
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Food Production System and Equipment Cleanliness in the Age of FSMA

February 2, 2020

Since just before the turn of this century, the vast majority of the food and beverage industry has come under increased scrutiny designed to ensure the safety of the food stream from farm or factory to the consumer’s table. The contributing factors have included outbreaks of foodborne illnesses, concerns about bioterrorism and the desire to…

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Posted by Daryl L. Roll Category: Blog
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What is the Passivation Process?

January 27, 2020

As defined in MIL-STD-753C, the Passivation process is the final treatment/cleaning process used to remove iron from the surface of corrosion resistant steel parts such that a more uniform formation of a passive surface is obtained thus enhancing corrosion resistance. Stainless steel is different from other metals in that as you get closer to the surface…

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Posted by Daryl L. Roll Category: Blog
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Citric Acid Passivation of Stainless Steel Used in Aerospace Applications

September 27, 2019

Stainless steel is used in many aerospace applications because it is able to maintain its structural integrity over a wide temperature range while remaining chemically inert (passive), resisting corrosion and high-temperature oxidation. There are a number of different grades of stainless steel. They are all primarily alloys of iron, chromium and nickel in different combinations…

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Posted by Astro Pak Category: Blog
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Is Electropolishing Necessary?

June 24, 2019

It depends on what the desired outcome is. Chemical passivation will attain a chrome to iron ratio above 1.0 (Cr/Fe), without producing any measurable change in the finish characteristics of the surface while Electropolishing (EP) is designed to remove surface damage from mechanical polishing (MP) and produce a more cleanable featureless smooth surface finish (Fig….

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Posted by Daryl L. Roll Category: Blog
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Does FSMA Have You Questioning Your Quality Protocols?

June 5, 2019

What Is the Food Safety Modernization Act? Congress passed the Food Safety Modernization Act (FSMA) in 2011 to an increase in reported incidents of foodborne illnesses in the preceding decade. The FSMA requires many manufacturers and transporters in the food and beverage industry (including breweries and wineries) in many cases to comply with current good…

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Posted by Seth Matthews Category: Blog
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Frequently Asked Questions About Electropolishing

May 7, 2019

Did you know you can perform vessel reconditioning on-site? There are several reasons to evaluate this process. On-site reconditioning reduces downtime when you compare it to the replacement of a vessel. It doesn’t require re-validation of the vessel since you only need to treat the surface of the existing vessel. You can monitor the progress…

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Posted by Mike Montgomery Category: Blog
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Can Wine Be Used For Passivation?

November 7, 2017

The making of wine is both a science and an art. From growing the grapes through the bottling of the final product, winemakers use careful techniques to protect the taste of their delicate product. Traditions and secret techniques are passed on through generations of winemakers. A vintner knows that proper care and maintenance of his…

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Posted by Brent Ekstrand Category: Blog
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