| 摘要 |
<p>Method and apparatus for the production of a plurality of uniform expansions of a tube (102) in a plurality of tube supports (120) simultaneously. A plurality of tubes (102) are expanded in apertures of tube support (120) in a repetitive manner, each tube (102) being expanded into the plurality of support plates (102) simultaneously. The tube expander assembly (10), when positioned such that each bladder (71) is centered on each land of the support plates (102) surrounding the tube, will precisely control the degree (magnitude) of expansion of each tube (102) against the tube support aperture (122) by controlling the amount of applied hydraulic pressure applied to expandable bladders (71). The method and apparatus can also be used to expand a tube (102) into the apertures of the tube sheet (100) This operation can be accomplished without removing the tube expander assembly (10) from the tube (102). Ideally, the operation is accomplished simultaneously, but may be accomplished in sequential pressurizations.</p> |
