Automatic Welding, 2024, №01



2024 №01 (07)

DOI of Article 10.37434/as2024.01.08

2024 №01 (01)

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Avtomaticheskaya Svarka (Automatic Welding), #1, 2024, pp. 67-71

Sanitary and hygienic assessment of noise at nonconsumable electrode mechanized argon-arc welding of aluminum alloys

A.O. Lukyanenko, V.A. Kuleshov, A.G. Poklyatskyi

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Sanitary and hygienic characteristics and level of harmful factors are an important indicator of welding technology quality. In the work, the regularities of formation of such a harmful factor as acoustic noise during nonconsumable electrode mechanized argon-arc welding (foreign analogue - TIG) of aluminium alloys 1460 (Al-Cu-Li) and 1201 (Al-Cu) were investigated, in order to develop recommendations for improvement of sanitary and hygienic characteristics at the operator-welder workplace. It was established that the magnitude of welding noise at the workplace at welding current in the range of nominal values of 140...260 A significantly exceeds the maximum permissible noise level and reaches 99 dBA. The noise level does not depend on the chemical composition and mechanical properties of aluminium alloys or on the methods of sample surface treatment. TIG welding of aluminium alloys 1460 and 1201 requires application of special methods and means of noise protection. 13 Ref., 4 Tabl., 2 Fig.
Keywords: aluminium alloys 1460 and 1201, nonconsumable electrode argon-arc welding, occupational safety, acoustic noise level, noise protection


Received: 20.11.2023
Received in revised form: 29.11.2023
Accepted: 14.12.2023

References

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