Cleaning Jewelry With An Ultrasonic Cleaner
Part of the Video Series How to Make Beautiful Jewelry
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Contact: http://www.DJPOYE.com
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Member Comments
Posted by skilman on Monday, 19 May, 2008 at 5:35 PM
To bad your videos are too short .I have myself this problem, when I need to submit a more detailed video , as "LILY NECKLACE" is. You can watch this video -among others - on my channel on www.metacafe.com/cha nnels/skilman/. Enjoy .
Posted by skilman on Monday, 19 May, 2008 at 12:39 AM
An ultrasonic cleaner is simply a metal tank [stainless steel] that has piezo ceramic transducers bonded to the bottom or side. These transducers have a unique property of changing size almost instantly when excited by an electrical signal. When excited the transducer increases in size and causes the tank bottom or side to move. This creates a compression wave in the liquid of the tank. By using an electrical generator that puts out a high frequency signal [20 to 250 kHz] the transducer rapidly induces compression and rarefaction waves in the liquid. During the rarefaction cycle the liquid is torn apart. This creates a vacuum cavity within the liquid. These cavities will grow larger and smaller as the compression waves are continued. When the cavity reaches a certain size [based on the frequency and the wattage of the signal] the cavity can no longer retain its shape. The cavity collapses violently and creates a temperature of 5,000 degrees centigrade and a jet of plasma that impacts against whatever object is in the tank. There are millions of these bubbles created and collapsing every second in an ultrasonic tank.It is these collapses that clean the part. The jet will explode the dirt or any other material off the surface of the part. By adding soap or other chemical to the water in an ultrasonic tank, you can increase the effectiveness of the cleaning operation. Heat also improves Ultrasonic Cleaning by eliminating entrapped air in the water and making the detergent more effective. The best temperature to clean with is 80% of the boiling temperature of the solution. You should always use a basket to hold the parts you are cleaning. Never put parts directly on the bottom of an ultrasonic cleaner.
Video Transcript
I'm DJ Poye, professional jeweler and gemologist and I am here today on behalf of Expert Village. In the very last phase, or the stage, will be the ultra sonic cleaner. It is actually electrical current that runs through a solvent. I use all green products here for that too as well. A light soap. Then, what happens is that the red rouge is a powder and in the small crevices you cannot get it out any other way. So you place in on the ultrasonic, the electrical current shakes the water, and it removes all that particles of red rouge. So here we go. Place it on the holder, turn it on, and it sit there for two, three minutes. That's good enough.
About the Expert
Expert: DJ Poye is a graduate Jeweler/Gemologist from Paris College. Her studies included fabrication of metal, lost wax casting, stone setting, jewelry design, and gemology. Read More
