| 摘要 |
<p>PURPOSE:To increase the efficiency of coating work, by tightly coiling an Al strip material while making the edges even, fixing both ends of the coiled material in the longitudinal direction, and coating the edge parts in the lateral direction with other metal. CONSTITUTION:An Al or Al alloy strip material 1 is tightly coiled while making the edges 2 even. Both ends 4, 5 of the coiled material 1 in the longitudinal direction are fixed on the inner material 1 by welding 6. The edge parts 2 of the coiled material 1 in the lateral direction are then coated with other metal such as copper 7.</p> |
