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Wear- and Corrosion-Resistant Cr3C2–15 % Ni and Cr3C2–28 % Ni Hard Alloys: Production and Industrial Testing of Valves for Oil Well Pumps from these Materials

  • POWDER METALLURGY INDUSTRY AND MANAGERIAL ECONOMICS
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Powder Metallurgy and Metal Ceramics Aims and scope

The corrosion resistance of Cr 3 C 2 –15 % Ni (KKhNF15) alloy in solutions of acids, alkalis, and salts is studied. It is found that the corrosion rate of this alloy is one fifth to one thirtieth that of 40Cr13 (40Kh13) stainless steel, stellite, and WC–8 % Co (VK8) alloy used to manufacture valve pairs for oil well pumps. The production of balls from the sintered Cr 3 C 2 –15 % Ni (KKhNF15) alloy and of valve seats from the Cr 3 C 2 –28 % Ni (KKhNF28) alloy is examined. The modes of rough machining, finishing, and abrasive mechanical processing of chromium carbide hard alloys are optimized depending on the duration of processes and the particle size of B 4 C powder. The batches of valve pairs manufactured from chromium carbide alloys were tested in industrial conditions at enterprises of the Ukrnafta Oil and Gas Company. The service life of a valve assembly made of the corrosion-resistant hard alloys is more than two years, which is three to five times higher than the life of such parts made of conventional materials. The standards developed for ‘seat–ball’ valve pairs from chromium carbide alloys are indicated (TU U. 28.4–02126745–001–2002).

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine

    V. A. Maslyuk, V. Ya. Naumenko, V. I. Ivchenko & M. I. Podoprigora

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  1. V. A. Maslyuk
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  2. V. Ya. Naumenko
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  3. V. I. Ivchenko
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  4. M. I. Podoprigora
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Correspondence to V. A. Maslyuk.

Additional information

Translated from Poroshkovaya Metallurgiya, Vol. 54, Nos. 3–4 (502), pp. 126–135, 2015.

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Maslyuk, V.A., Naumenko, V.Y., Ivchenko, V.I. et al. Wear- and Corrosion-Resistant Cr3C2–15 % Ni and Cr3C2–28 % Ni Hard Alloys: Production and Industrial Testing of Valves for Oil Well Pumps from these Materials. Powder Metall Met Ceram 54, 227–233 (2015). https://doi.org/10.1007/s11106-015-9704-9

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  • DOI: https://doi.org/10.1007/s11106-015-9704-9

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