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Dissimilar Metal Welding: Copper to Aluminium

redENERGY G4 70W EP-Z

Advantages of Fiber Lasers

Fiber Lasers have now matured into exceptionally reliable and stable industrial tools. These Lasers have unique capabilities that ensure a wide range of high quality micromachining processes; of particular interest here is their ability to produce high quality welds between dissimilar metals.

Laser Power Demand Beam Ø Scanner/Lens Energy
 redENERGY G4 70W EP-Z  70W 1.6 5-10mm 163mm or 254mm FL- theta Multi – waveform process

Fiber Lasers have now matured into exceptionally reliable and stable industrial tools. These Lasers have unique capabilities that ensure a wide range of high quality micromachining processes; of particular interest here is their ability to produce high quality welds between dissimilar metals.

Using ns Pulsed Lasers such welds can be applied in thin section lap welding applications. The joints are often found in consumer electronics and batteries.

Challenges of welding dissimilar metals

The challenge with this application is that welding dissimilar metals often has issues with heat input and formation of brittle inter metallic phases. Using Fiber Lasers for such an application reduces the heat input and the heat-affected zone to further reduce cycle time. Additional benefits of using Fiber Lasers are that they are able to produce accurate, controllable, consistent and repeatable welds.

Using the redENERGY 70W EP-Z Laser

The welding copper to aluminium process uses our redENERGY 70W EP-Z Laser to create 3 spot welds, taking approximately 1 second, to produce an extremely strong hold between the Copper and Aluminium. The process is very quick and clean with no oxide layers and a low electrical resistance.

This is an SPI Lasers patented process.

Related content

Here are some additional articles to read about copper welding and related topics:

Discuss Dissimilar Metal Welding and Other Applications with SPI Lasers

We are contactable on +44(0)1489 779696 or via our web contact form. Please feel free to contact us for help, guidance and support about copper welding and our pulsed and continuous wave fiber lasers range. If you want to receive regular content updates from us, subscribe here.

To download this Applications Postcard as a PDF click here!

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