W dniu 11.08.2021 o 12:20, heby pisze:
> On 11/08/2021 11:59, Paweł Pawłowicz wrote:
>>> Z płynu? Nie ma w nim powietrza.
>> Zwykle jednak jest.
>
> Nie obserwuje zmętnienia w:
> a) alkoholu
> 2) wodzie
> III) wodzie z płynem do myjek
>
> Jesli jest jakies powietrze, to wydaje sie że pomijalna ilość.
> Przynajmniej nie wydaje mi sie aby syczenie miało związek w wydobywaniem
> się "powietrza z rozpuszczalnika" bo go ani nie widać ani syk nie ustaje
> po godzinie pracy. Syczy sobie niejako z definicji, również bez płynu.

Tyle, że ja pisałem o czymś innym.
A tu masz fragment opisu preparatu Aquanox(R) A4651US:

Ultrasonic Impingement: The mechanical effect of ultrasonic energy is
highly effective in dissolving the contaminant and displacing particles.
Soil removal requires that the cleaning agent come into contact with
soil. Cleaning solution temperature is critical in maximizing cavitation
intensity. Changes in temperature lower viscosity and solubility of
gaseous bubbles in the liquid medium, and vapor pressure. For electronic
assembly cleaning, higher frequencies in the range 68-80kHz provides
more cavitation sites and milder intensity while providing the energy
needed to penetrate and remove residue under components.
a. Degassing Requirements: Degassing is term used to describe the
removal of dissolved gasses from a liquid in an ultrasonic cleaning
tank. Dissolved gasses will reduce the effectiveness and power of an
ultrasonic cleaner since these gasses provide a cushioning effect on the
ultrasonic waves generated. However, the dissolved gasses within the
fluid are largely removed in the first few minutes of ultrasonic
activity. Therefore, in most cases, ultrasonic cleaners can be used
immediately after changing cleaning fluids. When an ultrasonic cleaner
is activated after a fresh batch of cleaning fluid has been added, one
will notice a huge veil of very fine bubbles rising to the surface from
every area of the cleaning fluid. The audible sound generated by the
ultrasonic system is also deadened at this time, and the system does not
produce the typical sound that the ultrasonic cleaner will produce when
the fluid is degassed. Once the veil of bubbles rises to the surface,
sound begins to increase in volume, and ultrasonic surface activity
begins to generate. At this point, the ultrasonic cleaning system is
capable of ultrasonic cleaning.
b. Once a fluid is degassed by ultrasonic activity, or heating of the
cleaning fluid, it does not need to be degassed again. Therefore,
degassing is only an issue when cleaning fluids are exchanged with new
fluid.

P.P.