| 摘要 |
<p>PURPOSE:To efficiently carry out groove with high accuracy and besides, to automate a series of stages of heat exchanger tubes by lining up and holding the heat exchanger tubes at the same intervals as pitches of header stubs in plural rows. CONSTITUTION:The heat exchanger tubes 2 in number equivalent to one row of the header stubs 4a, 4b and 4c of a header 3 are mounted on a carrier 22 and transferred in a bundle and besides, the heat exchanger tubes 2 are lined up and held at the same intervals as pitches of the header stubs in the row. As a result, groove aligning can be carried out efficiently at a time for every row only by adjusting the position vertically by pushing up, etc., from the underside for every carrier 22 according to the height of the header stubs of the row. In addition, the stages of edge preparation, welding and inspection are carried out efficiently in the process where the carrier 22 mounting the heat exchanger tubes 2 of each row of the header stubs is transferred between each working station.</p> |
