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Fig. 4.
Fig. 4. The erosion and weight reduction of the nozzle according to plasma operation time. (a) The erosion of the anode nozzle of the torch after 300 h without the preserve nozzle. (b) The erosion condition and weight reduction of the positive and preserve nozzle of the torch applied with preserve nozzle according to the operation time. (c) Initial surface condition of the preserve nozzle and condition after 1,000 h of operation.
Applied Science and Convergence Technology 2021;30:137~140
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