Category Archives: Cleaning

Cleaning Sintered or Porous Parts

Most surfaces that we encounter in industrial cleaning are relatively smooth and contiguous.  We have talked earlier about the difficulties of cleaning blind holes, threads, capillary spaces and other challenging configurations. The one surface we haven’t yet explored is that … Continue reading

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Ultrasonics – The Trouble With Watts – Part 2

As discussed in a previous blog, one problem with watts is that watts do not equal energy.  Let’s carry that thought a little further again using the vehicle analogy I put forth in the initial blog of this series. In the … Continue reading

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Ultrasonic Machining – A New Use for Ultrasonics?

Over the years, there have been several anecdotal references to otherwise unexplained changes in the properties of surfaces exposed to ultrasonic energy in a liquid.  In some cases, it would make sense that the change was due to increased cleanliness.  … Continue reading

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“Oil” is oil. Right?

Wrong! I don’t think most of us would consider using motor oil to moisten our dry skin.  By the same token, we wouldn’t use body oil in our car’s engine.  The notion seems to persist in the cleaning industry, however, that oil … Continue reading

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Sound Physics – Nodes and Antinodes – Part II

When a sound wave encounters an object or discontinuity in the sound conducting medium, at least part of the sound is reflected.  The way the sound reflects depends in large part on the rigidity of the reflecting surface.  If the … Continue reading

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Sound Physics – Nodes and Antinodes – Part I

I’ve made reference in the blog before to the fact that some surfaces are good candidates for ultrasonic cleaning while others are either difficult or impossible to clean.  In general, surfaces that are hard (metal, glass) are easily cleaned using … Continue reading

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Chemical Concentration – Economic and Process Considerations (cont.)

My previous blog addressed the chemical cost of using too much (or perhaps too little) “soap” in a cleaning process based on chemical cost.  Today we look at process issues. You might be saying, “What the heck?  So I use too … Continue reading

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Chemical Concentration – Economic and Process Considerations

I have talked before on the blog about the subject of chemical concentration and its relationship to cleaning.  A couple of recent incidents prompt me to re-address the subject of chemical concentration but from a little different angle. It’s a … Continue reading

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Cleanliness Testing – White Glove and Swab Tests

I have spent considerable time on the blog disclosing and discussing a variety of cleanliness testing methods.  A couple of tests that escaped earlier discussion, however, are the “white glove” test and the closely-related “swab” test.  These tests are conducted … Continue reading

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Common Misconceptions About Oil Removal Using Oil Coalescers

Preceding blogs have described oil removal techniques for industrial cleaning in some detail.  It would be nice if this was always a simple consideration - but it is not! The case for using an oil coalescer is pretty clear cut as … Continue reading

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