| 摘要 |
A method of lining the inner wall of a metal pipe (21) at an exteriorly inaccessible predetermined location comprises (i) positioning a metal sleeve (24) at the predetermined location in the metal pipe, (ii) positioning a conductive filament (25) concentrically with the metal sleeve, (iii) filling the space between the conductive filament (25) and the metal sleeve (24) with an energy transfer medium, and (iv) electromagnetically exploding the filament thereby to initiate a shock wave which is transmitted through the medium to impinge on the sleeve thereby to expand the sleeve plastically.
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