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<p>This paper describes recent advances in the use of ion currents as a sensing method in the oxyfuel cutting torch preheat flame. The flame exhibits semiconductor characteristics at signal-level voltages (<b>± </b>10&#xa0;V) that can be leveraged to monitor important attributes of the process: standoff distance, ready-to-pierce, pierce initiation success, pierce complete, cut health, and fuel/oxygen mixture. This work provides a concise introduction to ion currents, describes what is currently understood about the oxyfuel flame’s electrical characteristics, presents data describing their use as a sensor, makes recommendations for their adoption in a practical system, and poses important questions that require further attention.</p>

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Progress in oxyfuel cutting automation using ion current sensing

  • 期刊论文

  • 发表日期：

    2025年6月17日

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  • S. M. Mahbobur Rahman,
  • Christopher R. Martin,
  • Alexandrina Untaroiu

摘要

This paper describes recent advances in the use of ion currents as a sensing method in the oxyfuel cutting torch preheat flame. The flame exhibits semiconductor characteristics at signal-level voltages (± 10 V) that can be leveraged to monitor important attributes of the process: standoff distance, ready-to-pierce, pierce initiation success, pierce complete, cut health, and fuel/oxygen mixture. This work provides a concise introduction to ion currents, describes what is currently understood about the oxyfuel flame’s electrical characteristics, presents data describing their use as a sensor, makes recommendations for their adoption in a practical system, and poses important questions that require further attention.