Projection Welders

Projections (low thermal mass islands) are one method of insuring proper heat balance in difficult spot welding applications when there exists a 5:1 size difference between the parts to be welded. By providing a projection on the surface of one of the workpieces, weld current and force can be focused into the small area of the projection to produce heat at the desired weld location.

Projection welding can extend electrode life by increasing the electrode contact area and decreasing the current density at the surface of the electrode. Projection welding is effective even if the weldments are thick or when using conductive materials.

Projection welding can be used, for example, in hermetic seam sealing micro-electronic packages like TO cans. A projection is usually placed on the case and a high current pulse allows for simultaneous collapse around the entire length of the projection. In a controlled environment, it is possible to keep out moisture, oxygen, and any other potentially harmful elements for the electronics.

Lasers can also be used to hermetically seal electronic, RF and microwave packages. The package lid is placed on top of the base and the laser first tacks the lid into place, then scans around the entire outside edge of the package to seal in the internal components. This type of welding is typically done inside a glovebox with a controlled atmostphere.

Projection Welders

News & Events - AMADA WELD TECH

News and Events

Learn more about AMADA WELD TECH and our industry-leading products in our newsroom or at an upcoming tradeshow, webinar or employment event.

Visit the Newsroom
Learning - AMADA WELD TECH

Learning Center

An educated customer is a happy customer! Learn more about our eight different manufacturing technologies, watch a video, schedule some training or sign up for our blog in the Learning Center.

Visit the Learning Center
Support - AMADA WELD TECH

Support

Everyone needs a little help now and again. Visit the support center for technical documents, applications assistance, field service, customer service, sales assistance, software downloads and more.

Visit the Support Center