Automatic Welding, 2024, №05



2024 №05 (07)

DOI of Article 10.37434/as2024.05.08

2024 №05 (01)

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Avtomaticheskaya Svarka (Automatic Welding), #5, 2024, pp. 60-62

Increasing the resource of current-supplying mould at electroslag melting of cast iron

Yu.M. Kuskov, V.M. Proskudin, A.V. Netyaga

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: netyaga_av@ukr.net

The paper considers the possibility of long-term operation of stationary two-section current-carrying moulds without a protective lining in the current-carrying section. As a result of surfacing in the current-carrying moulds of various diameters (180, 150, 90, 70 mm), it was found that the electroerosion of the metal surface of the current-carrying section mostly occurs in the lower part of its vertical section, regardless of the material used for its manufacture (steel, copper). In some cases, erosion of the upper end of the moulding section is also observed. The use of moulding compounds (chamotte) for its manufacture leads to failure of the section within one surfacing cycle. Only replaceable electrically conductive linings provide guaranteed protection against erosion of the current-conducting section. Increased durability of the moulding section can be achieved due to the special design of its upper end part. 10 Ref., 3 Fig.
Keywords: electroslag surfacing, stationary two-section current-supplying mould, section durability


Received: 13.05.2024
Received in revised form: 25.06.2024
Accepted: 05.09.2024

References

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