초록 ▼

A heat exchanger assembly including at least one aluminum based tube having an internal surface and an external surface, an aluminum based lithium-magnesium composition cladding applied to either one of the internal surface and external surface of the tube, and at least one aluminum based component

A heat exchanger assembly including at least one aluminum based tube having an internal surface and an external surface, an aluminum based lithium-magnesium composition cladding applied to either one of the internal surface and external surface of the tube, and at least one aluminum based component disposed adjacent the cladding, a modified aluminum brazing flux applied to a joint between the surface and one component. The modified aluminum brazing flux comprises cesium fluoride, lithium fluoride, or both. Preferably, the cladding further comprises cesium. To manufacture the heat exchanger assembly, the tube and component are joined together with flux applied in the area of the joint using a controlled atmosphere brazing (CAB) process.

대표청구항 ▼

[ What is claimed is:] [11.] A method of manufacturing a heat exchanger assembly for an automotive vehicle, said method comprising the steps of:providing at least one aluminum based tube having an internal surface and an external surface;applying an aluminum based lithium-magnesium composition cladd

[ What is claimed is:] [11.] A method of manufacturing a heat exchanger assembly for an automotive vehicle, said method comprising the steps of:providing at least one aluminum based tube having an internal surface and an external surface;applying an aluminum based lithium-magnesium composition cladding to either one or both of the internal surface or external surface;said composition cladding further including cesium in an amount up to about 2% by weight based on the weight of the cladding;disposing at least one aluminum based component adjacent the cladding;applying a modified aluminum brazing flux to a joint between the at least one tube and the at least one component, said brazing flux comprising cesium fluoride, lithium fluoride, or their mixture; andjoining the at least one tube and at least one component together using a controlled atmosphere brazing process.