Aluminum Radiators

[swall]

Years ago, there was an article in Advanced Materials and Processing (the ASM publication) about ultrasonic soldering of aluminum radiators. Is this the current practice for OEM automotive radiators?

 

[TVP]

I am certainly no expert, but I don't believe this technology has supplanted conventional dip soldering or brazing as the standard for automotive radiators.

 

[EdStainless]

The last that I saw were vacuum brazed.

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P.E. Metallurgy, Plymouth Tube

 

[tbuelna]

The tube/fin cores are furnace brazed. The plastic end tanks are adhesively bonded using epoxy combined with crimped metal tabs.