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- W2369698626 abstract "In this paper,the seam tracking technology with non contact ultrasonic sensor is introduced into gas shield arc welding.Because the protective atmospheres are different,the attenuation of the ultrasonic signal is different.Through experiments,the influences of the gases,such as Ar,CO 2 and Ar+CO 2,on the ultrasonic signal are studied.The results show that the signal attenuation is smaller in Ar and it is greater in CO 2.The seam tracking system with ultrasonic sensor can not work normally in CO 2 arc welding without adopting measures.Based on the theory analysis the main reason of ultrasonic signal attenuation in CO 2 is the relaxation absorption effect.It is difficult to eliminate the relaxation absorption effect in CO 2 arc welding seam tracking with ultrasonic sensor.Thus the physical isolation methods are advanced in this paper,and one of them isa sleeve + a axial fan.It is useful for preventing CO 2 entering the space of the ultrasonic signal transmission.The results of experiments show that the non contact ultrasonic sensor can be applied in CO 2 arc welding seam tracking,and the CO 2 arc welding seam tracking system with ultrasonic sensor can satisfies the requirements in real welding engineering." @default.
- W2369698626 created "2016-06-24" @default.
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- W2369698626 date "2002-01-01" @default.
- W2369698626 modified "2023-09-24" @default.
- W2369698626 title "Development of Seam Tracking Technology with Ultrasonic Sensor in CO_2 Welding" @default.
- W2369698626 hasPublicationYear "2002" @default.
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