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Stainless Steel World magazine is a leading international magazine on stainless steels and corrosion resistant alloys CRAs with a worldwide distribution. Subscribe to our newsletter and receive all latest news on Stainless Steels right in your mailbox! We use cookies to track site visits anonymously.

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Gas tungsten arc welding GTAW has a long history as a process capable of producing high-quality joints. If fabricators needed greater speed and penetration, they turned to processes like plasma arc welding PAW as well as electron beam and laser beam welding. These high-energy-density joining methods can force a hole—a keyhole—through the material being welded.

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Gas tungsten arc welding GTAWalso known as tungsten inert gas TIG weldingis an arc welding process that uses a non-consumable tungsten electrode to produce the weld. The weld area and electrode is protected from oxidation or other atmospheric contamination by an inert shielding gas argon or heliumand a filler metal is normally used, though some welds, known as autogenous welds, do not require it. When helium is used, this is known as heliarc welding. A constant-current welding power supply produces electrical energy, which is conducted across the arc through a column of highly ionized gas and metal vapors known as a plasma.

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Penetration state is one of the most important factors for judging the quality of a gas tungsten arc welding GTAW joint. The purpose of this paper is to identify and classify the penetration state and welding quality through the features of arc sound signal during robotic GTAW process. The statistic features of arc sound under different penetration states like partial penetration, full penetration and excessive penetration were extracted and analysed, and wavelet packet analysis was used to extract frequency energy at different frequency bands.

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Ian HarrisDr. Yehuda BaskinPhilip A. Figure 1 Two welds, identical except for the use of DeepTIG rightshow markedly different profiles.

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Remember Me? Forum Sponsored Forums Longevity Sponsored Forum Gtaw tig welding aluminum full penetration butt weld welder tips and tricks. Results 1 to 11 of Thread: Gtaw tig welding aluminum full penetration butt weld welder tips and tricks.