Using the right amount of chemistry is important to successful industrial cleaning. Since there is no standard convention for expressing the amount of chemistry to use, it sometimes takes a little effort to sort things out. Chemistry is supplied in either liquid or powder form with several different conventions for each. Let’s look at liquids …
With its well-deserved credentials for chemical resistance and durability, stainless steel and particularly 316 grade stainless steel is a “go to” for the fabrication of ultrasonic cleaning tanks. Although it performs well in most applications, there are still those where stainless steel has its limitations. Stainless steel achieves its “stainless” characteristic by developing a very …
Successful ultrasonic cleaning processes utilize a combination of mechanical action provided by the formation and implosion of cavitation bubbles and chemistry that dissolves and/or promotes the wetting and transfer of mechanical energy to dislodge the contaminants to be removed. The interactions and effects of chemistry on the ultrasonic process obviously exist but are not well …
The physical laws of liquids are a little complex yet a general understanding of them is important to understanding the mechanics of cleaning chemistry in the removal of both soluble and not-so-soluble contaminants from parts. The general concept was discussed in the blog Chemistry – Solvent Characteristics. This blog will take things a bit further. Question …
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 …
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) …
The cost of acquiring and disposing of cleaning chemistry is usually a major contributor to the overall cost of an industrial or precision cleaning process. Removing contaminants from cleaning solutions can potentially extend their useful life and reduce overall cleaning costs. Traditional filters including those of the bag and cartridge variety are commonly used to remove solid (particulate) contaminants …
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 …
A previous blog discussed the ramifications of contaminant loading on cleaning. This time let’s look at the long term effects on cleaning chemistry. In lab testing, the ability of chemistry to withstand extended use is often not challenged. Chemistry is prepared and used for short term cleaning trials to verify the cleaning process. In long …
The cleaning process is the “recipe” for cleaning. Like any culinary recipe, it should clearly define the ingredients, times, temperatures and the method of application to be used for cleaning. Most cleaning consists of at least the three basic steps of washing, rinsing and drying. Wash – The purpose of washing is to remove contaminants …
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