STRIP FOR WELDED HEAT EXCHANGER TUBE, AND WELDED HEAT EXCHANGER TUBE

摘要

PROBLEM TO BE SOLVED: To provide a strip for a welded heat exchanger tube consisting of copper or a copper alloy, which can prevent welding failure and spatter in welding, and to provide a welded heat exchanger tube made by means of welding the strip.;SOLUTION: A method for manufacturing the strip comprises melting and casting the copper or the copper alloy, hot rolling, cold rolling, continuous annealing, then, furthermore cold rolling and continuous annealing, and winding it up. In this time, in the above copper or the copper alloy, [H]2×[O] is to be 40, when content of hydrogen is to be 1.0 ppm or less, content of oxygen is to be 50 ppm or less, the content of hydrogen is to be [H] (ppm), and the content of oxygen is to be [O] (ppm). A method for manufacturing the welding heat exchanger tube includes groove rolling the strip, curving it to a widthwise direction, and high frequency welding it after butting edges of a widthwise direction.;COPYRIGHT: (C)2002,JPO