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SEAM SEALING
Miyachi Unitek’s seam sealing equipment utilizes a welding, brazing, or soldering process to provide a hermetic seal or mechanical connection between two materials. Typical applications include seam sealing of microelectronic, sensor, crystal, and optoelectronic packages, as well as seam welding of thin metals, foils, and diaphragms.

Seam sealing provides a very reliable hermetic sealing process while maintaining low temperatures in the region of the active devices in the part package.

Miyachi Unitek produces a range of advanced seam sealing equipment for low to high volume applications. These seam sealers provide closed loop control of force, electric current, and electrode position. Control of all of these parameters for seam sealing and seam welding processes are required for optimum process yields.

The Miyachi Unitek seam sealers, with their inverter weld control power supplies, provide excellent control of the energy during the seam sealing process. Advanced features in the seam sealing units which increase process yields include the ability to ramp up and ramp down energy within each weld pulse, as well as the ability to provide less or more energy at the corners of the parts.

The inverter power supply included with the seam sealing equipment has a closed loop 25 kHz feedback rate - the fastest in the industry - for excellent process control. The high feedback rate enables the unit to adjust its output during the process to compensate for variations in part dimensions and plating thickness.

SM8500
PULSAR
PROJECTION WELDERS
Projection welding is a fast and straightforward process for welding component part packages to achieve a hermetic seal. Projection welding is also a very effective process for welding together industrial parts to form a mechanical joint. Parts with a projection designed on the parts enable lower energy welding which results in a reliable and repeatable process with high yields. Projection welding concentrates the process force and current in a small contact area between the two parts that are to be welded.

Miyachi Unitek produces a family of projection welding systems which provide a range of energy and force capabilities. For setting the projection welding parameters, these systems have an easy to use controller for setting the force and timing sequence for the process. The projection welding systems also include an operator console which provides equipment status and alarm indicators and is also used to set the weld energy level.

The Miyachi Unitek projection welding heads have a very rigid design and high precision bearings enabling the upper and lower electrodes to meet in parallel ensuring consistent force around the projection and thus an even distribution of the weld joint around the part. The projection welding heads also provide excellent force follow-up to maintain the weld force as the weld joint is formed, thus reducing weld splatter and expulsion.

Typical projection welding applications include optoelectronics, sensors, microelectronics, MEM’s, aerospace, and industrial components.

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