2018 №01 (05) DOI of Article
2018 №01 (07)

Automatic Welding 2018 #01
Avtomaticheskaya Svarka (Automatic Welding), #1, 2018, pp. 40-43
Electrodes for arc hardfacing of composite alloys

A.I. Bely, A.P. Zhudra, V.I. Dzykovich and V.V. Petrov
E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
This paper considers the peculiarities of formation of composite alloys based on tungsten carbides in arc hardfacing. It was found that application of spherical granules of tungsten carbides as a wear-resistant phase, which are to lower degree subjected to solution in process of hardfacing, is the most reasonable in development of electrode material. The optimum content of reinforcing phase in electrode metal was determined which should vary in 60–70 % limits of material weight in volume. Developed were gas-slag-forming and alloying systems and experimental compositions of the electrodes were manufactured. A series of technological peculiarities for providing coating homogeneity, consisting of components different in specific weight and granulometric composition, as well as its deposition on the electrode rod, were specified in experimental way. Determined were specifics of hardfacing process using developed electrodes, presented are the results of metallographic examinations of the deposited metal. Laboratory abrasive wear tests of composite alloys with experimental electrodes showed their high efficiency. 10 Ref., 1 Table, 2 Figures.
Keywords: arc hardfacing, composite alloy, coated electrode, tungsten carbide, reinforcing particles, wear resistance
Received:                28.11.17
Published:               15.02.18
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