Ultrasonic generally refers to acoustic frequencies above twenty thousand hertz, which is the upper limit of human hearing range. These frequencies are, however, audible to certain animals such as mice, bats, dolphins, and dogs, all of which have a higher hearing range as compared to humans. The human inability to hear ultrasonic sound waves is caused by the middle ear that acts as a low-pass filter.
The ultrasonic welding process offers many advantages over other welding techniques and is most commonly used in manufacturing wire harnesses, electronic components, and appliances. Ultrasonic welding is used when multiple layers of foil need to be welded onto a terminal or welded together with different combination of metals such as copper, aluminum, lithium, and nickel.
Ultrasonic welding uses a "low power friction" welding process in which little heat is generated and better control can be applied. The basic idea is to scrub work pieces across each other while clamped under pressure to create a bond. Work pieces are placed on an anvil that is knurled with fine ridges that bite into the material, holding it in place during the weld process. The ultrasonic tool is then lowered onto the pieces, clamping them under pressure and creating the needed scrubbing action. This tool vibrates at a frequency of twenty kilohertz for most welding operations and around forty kilohertz for low power applications.
The scrubbing motion helps in dispersing oxide layers and other impurities at the boundary until the base metals are in direct contact. The atoms of the work pieces then diffuse into each other, creating a purely metallurgical bond.
Ultrasonic welding techniques are used in different industrial sectors such as pharmaceutical, medical, food, cosmetic, and household and personal care manufacturing. They have enabled the ironing out of minor flaws in products during the production process, which if left unchecked, can damage the brand value of a product or company.
Ultrasonic provides detailed information on Ultrasonic, Ultrasonic Transducers, Ultrasonic Cleaners, Ultrasonic Nebulizers and more. Ultrasonic is affiliated with Electronic Test Equipment.
Article Source: http://EzineArticles.com/?expert=Kent_Pinkerton
Friday, June 27, 2008
How Ultrasonic Cleaners Work
When there are teeny, tiny little particles that are impossible to remove by other methods of cleaning then an ultrasonic cleaner is used. Keep in mind however that ultrasonic cleaners are not used to actually clean dirty items but rather to remove tiny particles that are impossible to remove any other way. The item must be cleaned first and then it will be ready for an ultrasonic cleaner.
Ultrasonic jewelry cleaners uses cavitations, which occurs when tiny bubbles form and collapse violently in a cleaning solution. The constantly forming and popping bubbles serves as a scrubbing agent that in turn cleans all parts, hidden and exterior, of the article submerged in the solution. Increasing the frequency means the bubbles are created at a faster rate which makes the energy released from each bursting bubble lower. This in turn equates to the perfect condition to remove small particles without damaging the object.
The way the bubbles are created is to simply introduce ultrasonic sound waves, which is basically high intensity and frequency sound waves, into a liquid. The way a jewelry cleaner works is that it has a small tank that holds the cleaning solution, a transducer which serves to convert electrical energy to mechanical energy, and then a generator that is ultrasonic and is capable of crating an electrical signal at a high frequency.
There are many benefits of ultrasonic cleaning that include speed, precision, and consistency. First of all, speed is important because ultrasonic cleaning allows many things to be cleaned without being taken apart. That goes for jewelry to large assemblies. Not taking the assemblies apart to clean them results in a significantly faster cleaning time because no labor is involved not to mention it saves money as well.
Precision is another benefit and an important one. Ultrasonic cleaning works because it can get in every little crevice, crack, and space to clean it properly and not only does it leave jewelry looking more beautiful than ever it also cleans assemblies and parts very well, too.
The final benefit is consistency and ultrasonic cleaning ranks up there because it provides an unparalleled cleaning every single time without fail for all pieces big or little, complex, or simple.
Caitlina Fuller is a freelance writer. When there are teeny, tiny little particles that are impossible to remove by other methods of cleaning then an ultrasonic cleaner is used. Keep in mind however that ultrasonic cleaners are not used to actually clean dirty items but rather to remove tiny particles that are impossible to remove any other way. The item must be cleaned first and then it will be ready for an ultrasonic cleaner. Ultrasonic jewelry cleaners uses cavitations, which occurs when tiny bubbles form and collapse violently in a cleaning solution.
Article Source: http://EzineArticles.com/?expert=Caitlina_Fuller
Ultrasonic jewelry cleaners uses cavitations, which occurs when tiny bubbles form and collapse violently in a cleaning solution. The constantly forming and popping bubbles serves as a scrubbing agent that in turn cleans all parts, hidden and exterior, of the article submerged in the solution. Increasing the frequency means the bubbles are created at a faster rate which makes the energy released from each bursting bubble lower. This in turn equates to the perfect condition to remove small particles without damaging the object.
The way the bubbles are created is to simply introduce ultrasonic sound waves, which is basically high intensity and frequency sound waves, into a liquid. The way a jewelry cleaner works is that it has a small tank that holds the cleaning solution, a transducer which serves to convert electrical energy to mechanical energy, and then a generator that is ultrasonic and is capable of crating an electrical signal at a high frequency.
There are many benefits of ultrasonic cleaning that include speed, precision, and consistency. First of all, speed is important because ultrasonic cleaning allows many things to be cleaned without being taken apart. That goes for jewelry to large assemblies. Not taking the assemblies apart to clean them results in a significantly faster cleaning time because no labor is involved not to mention it saves money as well.
Precision is another benefit and an important one. Ultrasonic cleaning works because it can get in every little crevice, crack, and space to clean it properly and not only does it leave jewelry looking more beautiful than ever it also cleans assemblies and parts very well, too.
The final benefit is consistency and ultrasonic cleaning ranks up there because it provides an unparalleled cleaning every single time without fail for all pieces big or little, complex, or simple.
Caitlina Fuller is a freelance writer. When there are teeny, tiny little particles that are impossible to remove by other methods of cleaning then an ultrasonic cleaner is used. Keep in mind however that ultrasonic cleaners are not used to actually clean dirty items but rather to remove tiny particles that are impossible to remove any other way. The item must be cleaned first and then it will be ready for an ultrasonic cleaner. Ultrasonic jewelry cleaners uses cavitations, which occurs when tiny bubbles form and collapse violently in a cleaning solution.
Article Source: http://EzineArticles.com/?expert=Caitlina_Fuller
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