Avtomaticheskaya Svarka (Automatic Welding), № 4, 2018, pp. 44-48
Influence of surfacing modes using powder strips on chemical composition and hardness of deposited metal
A.P. Voronchuk, A.P. Zhudra, A.V. Petrov, V.V. Fedosenko
E.O. Paton Electric Welding Institute of the NAS of Ukraine.
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine.
The influence of surfacing modes with an open arc using powder strips of different types on chemical composition and hardness of the deposited metal was studied. The powder strips PL-AN 101 and PL-AN 179 manufactured on the basis of a steel strip-sheath as well as the strip PL-AN 111 on the basis of nickel sheath were selected as the objects of investigations. The surfacing was performed in the machine A-874N with the power source VDU-1201 and the attachment AD-167 in a wide range of modes. The dependences of change in the chemical composition of deposited metal on the value of current, voltage and deposition rate were established. At the same time, the change in the current values in the range of 600...1100 A has a little effect on chemical composition of the metal deposited by the strips PL-AN 101 and PL-AN 111, and in surfacing using the strip PL-AN 179 it results in increase in the content of almost all alloying elements. The increase in the voltage and deposition rate leads to decrease in the degree of alloying for all the types of powder strips and, accordingly, to decrease in the hardness of deposited metal and the increase in current leads to its growth. 8 Ref., 1 Tab., 4 Fig.
: powder strip, surfacing modes, chemical composition, hardness
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