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Amada Miyachi Blog

Nanosecond laser micro welding: the possibilities!

Posted by Geoff Shannon on Tue, May 23, 2017 @ 12:30 PM

The nanosecond fiber laser is the most recent addition to AMADA MIYACHI's broad portfolio of micro welding solutions. Its output parameters are a bit different than other laser welding sources like pulsed Nd:YAG ,quasi-continuous-wave (QCW) fiber and the CW fiber laser. As the name suggests, the nanosecond fiber laser’s pulse widths are in the nanosecond range - under 250 nanoseconds (ns) - with pulse energies around 1 millijoule (mJ).

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Topics: laser welding, nanosecond laser welding, picosecond laser, femtosecond laser

Application labs - invest time up front to ensure success

Posted by Mark Boyle on Tue, May 02, 2017 @ 12:30 PM

Application engineers are a funny breed. They get their kicks from solving real-life manufacturing challenges – and the thornier the better! They like to get up close and personal with an application and help those having trouble to find the right way to weld, mark, cut, bond or machine a part. They also get a great deal of satisfaction from fixing a process that is taking too much time and affecting output (and the bottom line), one that results in unnecessary scrap or one that is out of limits. If the solution doesn’t work out the first time, they stick with it until they develop a one that works.

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Topics: Resistance welding, laser welding, laser marking, hermetic sealing, hot bar reflow soldering

Position-based firing generates improved laser seam weld quality

Posted by Mark Rodighiero on Wed, Dec 14, 2016 @ 12:30 PM

In hermetic and seam sealing applications utilizing pulsed laser welding, it is critically important that weld spots are evenly spaced, overlapping to form a continuous welded seam. Traditional pulsed laser welding approaches attempt to do this by firing the laser at a constant repetition rate. While this can be made to work along straight lines or other paths that can be traversed at constant speed, the result is sub-optimal and the approach really falls short when welding along irregular contours. For example, it does not work well for hermetically sealed packages, such as implantable medical devices, aerospace sensors or electronics modules.

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Topics: laser welding, fiber laser welding, position-based firing

Nd:YAG versus fiber laser welding – What are your options?

Posted by Geoff Shannon on Wed, Nov 02, 2016 @ 12:30 PM

Are you looking to use lasers for micro welding? If so, you have four excellent options: pulsed neodymium-doped yttrium aluminum garnet (Nd:YAG) and three different fiber lasers: continuous wave (CW) fiber, quasi continuous wave (QCW) fiber, and nanosecond fiber. In today’s post, I am going to compare the pulsed Nd:YAG laser with the three fiber laser options, and give some general comments on why and when one might be chosen over the other. I’m going to follow that up with another post with more information on how to choose.

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Topics: laser welding, fiber laser welding

Laser welding process reduces cycle times and inventory: saves money

Posted by Geoff Shannon on Thu, Aug 25, 2016 @ 12:30 PM

Not long ago I worked on an interesting project with an aerospace customer looking to develop an in-house laser welding process for a major turbine component. Thanks to our joint efforts, they were able to bring the operation in-house, achieving an impressive seven to eleven day cycle reduction. What’s more, the new process helped them reduce their inventory, translating to a large cost savings - all without sacrificing quality. 

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Topics: laser welding

Material processing solutions for manufacturing – one size does not fit all

Posted by Barbara Kuntz on Tue, Jul 12, 2016 @ 12:30 PM

You heard it here first: there is no single materials processing technology that fits all applications. Manufacturers looking for a robust, production-ready solution must follow a rigorous process to determine the best choice of equipment. There are no short cuts or magic wands – you have to carefully review process feasibility and part design to maximize production reliability. The evaluation must also consider overall system needs.

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Topics: hot bar reflow soldering, Resistance welding, laser cutting, laser marker, laser welding, micro TIG welding

Laser welding modes: conduction, transition, & keyhole welding

Posted by Geoff Shannon on Tue, Jan 19, 2016 @ 12:30 PM

The laser is a high energy density process that provides a unique welding capability – maximum penetration with minimal heat input. There are three basic weld modes, which correspond to the level of peak power density contained within the focus spot size: conduction mode, transition keyhole mode, and penetration or keyhole mode. Figure 1 is a graphic illustration of the three weld modes.

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Topics: laser welding, laser welding modes, keyhole welding

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

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