Arc welding renovation of permanent steel molds

• Autorzy: Šutka Jozef , Koňar R. , Moravec J. , Petričko L.

Identyfikatory

DOI

10.24425/afe.2021.136095

• Języki publikacji: EN

Abstrakty

EN

The paper deals with the possibility of the renovation of permanent steel molds for casting using electric arc welding technology. When casting liquid metal into permanent steel molds, there is chemical-thermo-mechanical wear of the surface of the mold cavity and the inlet system, which causes a deterioration of the surface quality and dimensional accuracy of the casting. For this reason, it is necessary to renovate the steel mold after a certain casting interval - mold life. In this case, the technology of manual electric arc welding with a coated electrode was used for the renovation. The welding renovation aims to increase the service life of the mold using carbide hardfacing welds, which after welding achieve high mechanical properties of the renovated mold parts. Two types of hardfacing coated electrodes were used for welding, namely the OK Weartrode 55HD electrode and the OK Weartrode 50T electrode. Macroscopic analysis, tribological tests as well as the measurement of the hardness of the welded layers were performed to evaluate the quality and the friction coefficients of the additional materials used. The properties of hardfacing welds were compared with the properties of the basic material of the high-alloy steel mold. The main advantage is in addition to increasing the durability and longevity of the mold, also reducing the cost of mold renovation compared to other renovation technologies.

Słowa kluczowe

EN

casting mould; renovation; welding; hardfacing; tribological test

PL

formy odlewnicze; renowacja; spawanie; napawanie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2021
• Tom: Vol. 21, iss. 2
• Strony: 35--40
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Šutka Jozef

• University of Zilina, Department of Technological Engineering, Zilina, Slovakia

autor

Koňar R.

• University of Zilina, Department of Technological Engineering, Zilina, Slovakia

autor

Moravec J.

• University of Zilina, Department of Technological Engineering, Zilina, Slovakia

autor

Petričko L.

• University of Zilina, Department of Technological Engineering, Zilina, Slovakia

Bibliografia

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• [13] Mician, M. et al. (2020) Effect of the t(8/5) cooling time on the properties of S960MC steel in the HAZ of welded joints evaluated by thermal physical simulation. Metals. 10(2), 229. DOI: 10.3390/met10020229.
• [14] Winczek, J. et al. (2019). The Evaluation of the Wear mechanism of High-Carbon Hardfacing Layers. Archives of Metallurgy and Materials. 64 (3), 1111-1115. DOI: 10.24425/amm.2019.129502.

Uwagi

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