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reverse polarity |
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reverse polarity [ri′vərs pə′lar·əd·ē] (metallurgy) An arc-welding circuit in which the electrode is connected to the positive terminal. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Lattimore, Allied Waste district manager, says, "Four different manufacturers contributed to the overall synchronized system of conveyor belts, a drum feeder, various sized separation screens, variable speed motors, overhead cross-belt magnets and an Eddy current separator, a device that uses reverse polarity to separate aluminum from the waste stream. A DC welder set for reverse polarity (electrode positive, ground negative) does the opposite-electrons flow from the electrode to the metal, which increases penetration. It is characterized by a jigsaw-like configuration of the ameloblasts, which exhibit a reverse polarity of cells (also known as Vickers-Gorlin change), and a stellate reticulum in the center (figure l). |
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