| 摘要 |
A pipe electrochemical polishing system (10, 10a) for in place polishing of a pipe (28) has provision for detecting the instant position of a cathode (14) within the pipe (28) such as cable marks (52) and cable mark sensor (50), an infrared camera (60), heat sensing crayon marks (64), thermisters (66), and capacitance sensors (68), used individually or in combination. According to the inventive in place electropolishing method (80) when it is determined that the cathode is in a non horizontal portion (72) of the pipe (28) and further is presently traveling generally downward, then the direction of flow of the electrolyte (24) is reversed to carry any bubbles in the electrolyte (24) away from the area of the cathode (14).
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