| 摘要 |
<p>A method of forming a heat exchanger from aluminium or aluminium alloy components. The method comprises forming the components, at least one of which is a tubular component (10), assembling the components, and brazing the components together. Said tubular component (10) is formed by bending a sheet bringing opposite edge portions (10a) of the sheet into overlapping relationship with one another, the gap (12) between said overlapping portions extending along said component. A bead (14) containing particles of brasing flux in a solvent is applied to the tubular component (10) along the exposed end (12a) of said gap, and an adhesive agent (16) is applied on top of said bead (14) so that the flux material is encapsulated. During the brazing the tubular component (10) is orientated so that the flux flows into said gap (12) and enables a brazed joint to be formed between the overlapping portions (10a).</p> |
