The results of investigation of the rate of gas flow and powder particles flying at plasma-jet hard-facing by a constricted arc in gas powder protective media are presented. A new method of welding bath protection by a gas powder flow is proposed, which makes it possible to reduce the argon consumption by 50 – 60%, as well as to reduce plasmatron mass-dimensional characteristics, while abandoning the use of a shield cup and protective gas as an independent flow.

中文翻译：

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用气粉流保护等离子流硬面的方法

给出了在气体粉末保护介质中通过收缩电弧对等离子流硬质合金表面的气体流量和粉末颗粒飞行速率进行研究的结果。提出了一种通过气体粉末流保护熔池的新方法，该方法可以减少50-60％的氩气消耗，并降低等离子加速器的质量尺寸特性，同时放弃使用屏蔽杯和保护气体作为独立流向。