In 2010, a patent was issued to Kaijo Corporation (US 7,726,325) for a method to efficiently and rapidly “degas” liquids. In short, the process involves passing a liquid through a restriction such as the narrowing of a pipe at a sufficient velocity that rarefication downstream from the restriction (ala Bernoulli’s principle) creates negative pressure to draw … Continued
A preceding blog discussed the possible effect of too many available sites for the formation of cavitation bubbles to the point that there isn’t enough energy available to grow a significant enough portion of them to sufficient size to implode. This leads to the question that the reverse may be possible as well. In short, … Continued
Automatic chemical addition and makeup is an attractive on feature on today’s sophisticated cleaning machines. Who wouldn’t appreciate eliminating the drudgery of taking samples, titrating, refractometer readings, or whatever and adding chemistry to a cleaning or rinsing bath manually? The trouble is that automatic chemical makeup is just not possible or applicable in all cases. Although there are … Continued
The tests described in the last couple of blogs are rudimentary ways to assess the surface activity of the surface being tested. In fact, they are all based on the concept of contact angle. A drop of water resting at equilibrium on a surface will intersect that surface at a measurable angle called the contact angle. The … Continued
While ultrasonic cleaning is highly effective, the issue of ultrasonic shadowing can impair the thoroughness of this type of cleaning.
In a recent blog, I touched on the fact that there is a limit to how long a cleaning solution will continue to produce clean parts as it becomes increasingly contaminated from use. Chemistry and disposing of spent chemistry are both expensive. Changing a bath usually results in a gap in production as the tank(s) … Continued
I admit, I stole that title from my grandma Bertha. But even in this day, the concept is applicable. Cleaning one thing is one thing, cleaning thousands of things is another. Let’s think about that. Cleaning, as we have discussed before, really amounts to moving contaminants from the surfaces being cleaned and sequestering them in another … Continued
When particles are the enemy, my general rule is filter, filter, filter! The cost of filtration is small compared to the overall benefit even if it is only “insurance.” There is, of course, the initial cost of installation (filter housings, pumps, plumbing, etc.) but the cost after that is going to be pretty much fixed provided … Continued
Group-web-300x125_2.jpg Blackstone-NEY Ultrasonics knows that there is no one solution to meet every ultrasonic cleaning need. In response, we now offer the widest range of ultrasonic cleaning process technology options available today using a single ultrasonic generator platform! Our totally new generator can be configured to provide the exact frequency, power and waveform
The Cleaning Technologies Group is a world class leader in providing passivation systems to the medical and aerospace industries. What exactly is passivation? Passivation is the removal of exogenous iron or iron compounds from the surface of stainless steel by means of chemical dissolution. A process extremely important to critical cleaning applications. Our systems combine