Surface of a previously deformed part of a heat exchanger to be soldered used in the production of a heat exchanger has a flux layer containing nano-particles coated with a lubricant layer

摘要

Surface of a previously deformed part of a heat exchanger to be soldered has a flux layer containing nano-particles coated with a lubricant layer. An independent claim is also included for a method for the production of an aluminum semi-finished product, especially an aluminum strip material.