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Amada Miyachi Blog

Geoff Shannon

Recent Posts

Battery welding: using lasers for tab welding applications

Posted by Geoff Shannon on Wed, Nov 18, 2015 @ 12:30 PM

We’ve covered a variety of battery welding related topics in this blog space - not surprising, given the importance of batteries in today’s world. This post, however, will narrow the discussion down to laser welding the tabs to the terminals for a battery pack.

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Topics: laser welding

Avoid these pitfalls when moving to a laser welding process

Posted by Geoff Shannon on Thu, Oct 08, 2015 @ 12:30 PM

We often get customers asking us about moving an existing welding procoess to laser welding so they can take advantage of the laser’s great benefits.  I'd like to take a minute to review a few of the potential pitfalls of moving to laser welding, so you might avoid them and make YOUR transition as smooth as possible.

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Topics: laser welding

Plastic welding with lasers - making it work for you

Posted by Geoff Shannon on Tue, Oct 06, 2015 @ 12:30 PM

Lasers are effective tools for plastic welding, even for clear plastics.  The key to success is material selection: it must be a thermoplastic, meaning that it becomes soft or plastic when heated, hardens on cooling, and that process may be repeated.

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Topics: laser welding

Lasers in manufacturing – 5 trends to keep your eye on

Posted by Geoff Shannon on Tue, Jul 14, 2015 @ 12:30 PM

Laser technology in manufacturing is everywhere, touching our lives in many, invisible ways. For example, lasers are used to cut the material that the airbags in our cars are made of, the glass for our smart phone and tablet screens and the tiny, delicate medical stents used to improve our health and enhance our longevity.  Lasers are used to weld airbag detonators, and the batteries in our handheld mobile devices; to drill engine components for planes; and to mark or engrave all of the above.

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Topics: laser marking, laser cutting, laser micromachining, laser welding

Laser welding basics – CW, pulsed or modulated?

Posted by Geoff Shannon on Mon, Jul 06, 2015 @ 01:19 PM

Lasers create welds by outputting either discrete packets of energy known as pulses or extended output known as a continuous wave. A pulsed laser produces a series of pulses at a certain pulse width and frequency until stopped. Continuous wave (CW) simply means that the laser remains on continuously until stopped. Pulsed Nd:YAG lasers operate in pulsed mode only, diode lasers operate in continuous wave, and fiber lasers can operate in either pulsed or CW mode. 

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Topics: spot welding, laser welding

Laser welding basics: how does laser welding work?

Posted by Geoff Shannon on Fri, Jun 26, 2015 @ 12:30 PM

How do lasers weld?  When laser welding metal, one must first raise the temperature of the metal to a point where the laser's energy can be absorbed by the material. To do this, the laser is focused on the material much like the sun might be focused by a magnifying glass for a science experiment, only the laser’s power density is many orders of magnitude higher, around 106 Watts per square centimeter (W/cm2).

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Topics: laser welding

Cutting polymer stents? Green femtosecond lasers offer best cut quality.

Posted by Geoff Shannon on Tue, May 26, 2015 @ 12:30 PM

Recently, I've noticed an increase in the use of polymers for stents and scaffolds in medical device manufacturing, largely because it offers a range of interesting features and applications. The only way to manufacture stents and scaffolds made of these materials, however, is by using a femtosecond (fs) laser, which provides both the necessary cutting capability and cut quality.

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Topics: laser cutting, laser micromachining

Update on ROI for disk femtosecond lasers

Posted by Geoff Shannon on Thu, May 14, 2015 @ 12:45 PM

Just about a year ago, I blogged about the two main benefits of using an ultrashort femtosecond (fs) laser for hypo tube and stent cutting.  Specifically, since the fs laser produces pulses that are shorter than the conduction time for most metals, there is no thermal “fingerprint” left on the part. And, pure ablation rather than melt ejection means the cut requires minimal post processing, even for materials like nitinol. Figure 1 exemplifies this precise cut and finish using the fs laser for a nitinol stent.

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Topics: laser cutting, laser micromachining

Some thoughts on choosing the best battery welding technology

Posted by Geoff Shannon on Tue, May 05, 2015 @ 12:45 PM

If you’re like me, you could fill a bathtub with batteries and battery packs for all of the devices in your life; they have become an integral part of everyday living. With all of this, however, comes the need to manufacture batteries and battery packs to power our connected world.

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Automated laser wire stripping: innovative & efficient!

Posted by Geoff Shannon on Wed, Apr 29, 2015 @ 12:45 PM

In the past few years, I have noticed an increasing number of medical device applications requiring the stripping of outer layers of polymers from small diameter wire to expose the underlying metal conductor. Some applications that spring to mind include cardiac rhythm management, and neurological and radio frequency ablation products.

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