METHOD AND DEVICE TO CLAD, OR HARD-FACE FOR MINIMIZING ADMIXTURE
An electric arc device and methods to build up, clad (2830), join, or overlay an alloyed metal onto a parent metal (2810) with minimal admixture (2820). The methods employed in the electric arc device provide a high frequency waveform with a high amplitude pulse, a low amplitude background current,...
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Format: | Patent |
Sprache: | eng ; fre |
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Zusammenfassung: | An electric arc device and methods to build up, clad (2830), join, or overlay an alloyed metal onto a parent metal (2810) with minimal admixture (2820). The methods employed in the electric arc device provide a high frequency waveform with a high amplitude pulse, a low amplitude background current, and a special shorting routine, to alleviate the problem of generating too much ad-mixture. A fast transition from a peak current level to a background current level along with a shorting re~ sponse and a plasma boost pulse reduces the droplet size and reduces the heat input required to achieve good welding performance. |
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