• 2015-06-05

  While I was making my second Panaplex display, I realised that an ideal means of forming cathode wire supports would be a piece of ceramic or glass with small holes drilled in it to hold the wires. The holes need to be sub-mm, and this is nearly impossible to do with conventional rotary diamond drills. Fortunately, there is a solution - ultrasonic drilling. This is widely used in lapidary f...

• 2015-05-31

 2.  ACOUSTIC CAVITATION  Power ultrasound enhances chemical and physical changes in a liquid medium through the generation and subsequent destruction of cavitation bubbles. Like any sound wave ultrasound is propagated via a series of compression and rarefaction waves induced in the molecules of the medium through which it passes. At sufficiently high power the rarefaction cycle may...

• 2015-05-29

 Rechargeable lithium ion (Li-ion) batteries were first developed as a commercial product by Sony in 1991, to solve a specific problem with the company’s video cameras.  The typical video camera of the time had evolved from a professional beast that sat on the videographer’s shoulder to something that could fit into the palm of the hand, but the nickel cadmium batteries that were availab...

• 2015-05-27

 Ultrasonic Metal Welding for Lithium-Ion Battery Cells The three most common metal to metal joints in a lithium-ion battery pack are foil to tab, tab to tab, and tab to bus. All three joints pose joining challenges, but of the three, welding multiple layers of foil to a tab is the most challenging. The joint is often made up of dissimilar metals, the metal thickness is mismatched, and one si...

• 2015-05-17

WELDING CHARACTERISTICS: Unlike welding of rigid plastic parts, the ultrasonic welding of textiles and films relies on a pattern or design on the tooling to focus the ultrasonic energy and produce a melt. This geometry can be located on the face of the horn, anvil, rotary drum, or stitching wheel. These patterns are listed in Branson data sheet PW-45. In general, favourable material characteristic...

• 2015-05-14

Mechanical methods includes Expression/Expeller press Ultrasonic-assisted extraction The simplest method is mechanical crushing. Since different strains of algae vary widely in their physical attributes, various press configurations (screw, expeller, piston, etc) work better for specific algae types. Often, mechanical crushing is used in conjunction with chemicals.Expression/Expeller press:Algae i...

• 2015-05-06

 Our new equipment -Ultraosonic degassing device with ceramic sonotrode  Any gas (unless intentionally blasted through the melt) is usually completely dissolved in the liquid metal and no free bubbles exist in the liquid volume. Therefore, the theory of ultrasonic degassing well developed for water (e.g. by Kapustina) is only applicable to the liquid metals after the cavitation star...

• 2020-07-10

  Ultrasonic Bonding Of Nonwovens, Films And Textiles   Over the last few years, ultrasonic bonding technology has evolved to meet quality expectations and speed requirements for state-of-the-art converting lines. The latest generation of ultrasonic bonding systems provides complete process control and produces consistently high bond quality at line speeds of up to 1,500 feet per minute ...