| 摘要 |
A collet holder which provides heated gas directly to and around the collet head, and prevents oxygen entrainment. The collet holder is characterized by three concentric sections. The first section receives the cartridge heater and holds the collet, providing it with a vacuum. The second section surrounds the forward portion of the first section and creates the gas turbulent flow heat exchanger. The collet extends through a discharge orifice by which the heated gas is applied to the collet head. Finally, a third shield section encases the collet holder and minimizes heat loss.
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