pa sad, ja sam koristio neku specijalnu tecnost za uv kadu i skidala je stroku sa plastike i pcb-a jedno 100000 puta bolje nego voda i deterdzent u toj istoj kadici tako da .. ima tu necega .. generalno se voda uopste ne preporucuje "posto ne radi"
http://en.wikipedia.org/wiki/Ultrasonic_cleaning
Citat:
Cleaning solution
Ultrasonic activity (cavitation) helps the solution to do its job; plain water would not normally be effective. The cleaning solution contains ingredients designed to make ultrasonic cleaning more effective. For example, reduction of surface tension increases cavitation levels, so the solution contains a good wetting agent (surfactant). Aqueous cleaning solutions contain detergents, wetting agents and other components, and have a large influence on the cleaning process. Correct composition of the solution is very dependent upon the item cleaned. Solutions are mostly used warm, at about 50–65 °C (122–149 °F), however, in medical applications it is generally accepted that cleaning should be at temperatures below 38 °C (100 °F) to prevent protein coagulation.
Water-based solutions are more limited in their ability to remove contaminants by chemical action alone than solvent solutions; e.g. for delicate parts covered with thick grease. The effort required to design an effective aqueous-cleaning system for a particular purpose is much greater than for a solvent system.
Some better machines (which are not unduly large) recycle the hydrocarbon cleaning fluids. Three tanks are used in a cascade. The lower tank containing dirty fluid is heated causing the fluid to evaporate. At the top of the machine there is a refrigeration coil. Fluid condenses on the coil and falls into the upper tank. The upper tank eventually overflows and clean fluid runs into the work tank where the cleaning takes place. Purchase price is higher than simpler machines, but such machines are economical in the long run. The same fluid can be reused many times, minimising wastage and pollution.
Carbon tetrachloride was used in the past, but is now prohibited as a health hazard.
Thread sa raznim receptima:
http://mb.nawcc.org/showthread...ight=Ultrasonic+Cleaning+Fluid
jedan recept:
Citat:
Here's what I use:
4 Oz Acetone
4 Oz Oleic Acid
4 Oz TSP or dish soap
1 gallon water
Mix ingredients, then add:
8 Oz Ammonia Hydroxide (I use household Ammonia and it works fine)
Rinse with: water, then
99% pure Isopropyl Alcohol
znaci posle pranja se ispira sa vodom i alkoholom ali sama tecnost za pranje je aceton, oleinska kiselina (gde li se to kupuje), detrdzent za sudove i amonijak (gde li se tek to kupuje)
ima raznih receptura ali svi se slazu sa tim da voda u ultrazvucnoj kadi sama za sebe ne pere nista
Izrada ultrazvučne kade
