PC-GMAW effect on the welding thermal cycle and weld metal geometry for high strength steels

• Autorzy: Zavdoveev Anatoliy , Poznyakov Valeriy , Kim Hyuong Seop , Rogante Massimo , Heaton Mark , Baudin Thierry

Identyfikatory

DOI

10.16926/ijess.2020.01.01

• Języki publikacji: EN

Abstrakty

EN

Welding of medium carbon alloy steels used in the manufacture of special purpose machinery imposes to solve two mutually exclusive problems - to increase the depth of penetration of the base metal and to reduce the width of the thermal impact zone of the welded joints. To successfully solve this problem, it is necessary to use arc welding processes with a concentrated heat source. One of these processes is pulsed current gas metal arc welding (PC-GMAW). The present researches have allowed establishing, that with PC-GMAW change of welding current is a difficult character, namely: on high-frequency impulse signal (60 kHz), impulses of the current of low frequency (from 90–150 Hz) are imposed. The change in the values of the mean welding current at PC-GMAW is achieved by increasing the pause current and the frequency of high amplitude current pulses. It is shown that the PCGMAW allows reducing the amount of metal splashing, to increase the depth of penetration (almost 2 times) in comparison with stationary welding. At the same time, the cooling rate of HAZ metal in the temperature range 600-500°C decreases almost 1.5 times, which allowed to reduce the width of HAZ by 40%.

Słowa kluczowe

EN

pulse current gas metal arc welding; welding thermal cycle; heat affected zone; high alloy welding materials

• Wydawca: Wydawnictwo Uniwersytetu Humanistyczno-Przyrodniczego im. Jana Długosza w Częstochowie
• Czasopismo: International Journal of Engineering and Safety Sciences
• Rocznik: 2020
• Tom: Vol. 1
• Strony: 5–16
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Zavdoveev Anatoliy

• Paton Electric Welding Institute of the NAS of Ukraine, 03150 Kyiv, Ukraine

autor

Poznyakov Valeriy

• Paton Electric Welding Institute of the NAS of Ukraine, 03150 Kyiv, Ukraine

autor

Kim Hyuong Seop

• Pohang University of Science and Technology, Department of Materials Science and Engineering, (POSTECH), Pohang 37673, Korea

autor

Rogante Massimo

• Rogante Engineering Office, 62012 Civitanova Marche, Italy

autor

Heaton Mark

• ANT, Advanced Nano Technology, Nandor Rd, Park West Business Park, Dublin

autor

Baudin Thierry

• Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405, Orsay, France

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).