| 摘要 |
<p>A brazable composite metal material for a heat exchanger tube or manifold, a method of making the tube or manifold, and a heat exchanger made therefrom. The composite metal suitable for making the heat exchanger tube or manifold has one of an aluminized carbon steel, galvanized carbon steel, or steel wire mesh core roll bonded to at least one outer layer of a brazable aluminum alloy, such as type 3003 aluminum alloy. The method of making the heat exchanger tube includes the steps of (a) providing a core of one of an aluminized carbon steel, galvanized carbon steel, or steel wire mesh sheet or strip material; (b) placing at least one sheet or strip of brazable aluminum alloy material on the steel core; (c) roll bonding the aluminum alloy material to the aluminized surface of the steel core to form a roll bonded composite sheet or strip material; (d) forming the composite material to a desired configuration; and (e) joining abutting aluminum edges of the formed composite to form a fluid tight joined edge defining a shape having an open interior.</p> |
