Improving the wear resistance of hard-alloy rolling disks by pulsed-plasma treatment |
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| Authors: | Yu. N. Tyurin S. N. Kul’kov O. V. Kolisnichenko |
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| Affiliation: | (1) School of Life Science and Technology, Shanxi University, Taiyuan, 030006, People’s Republic of China |
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| Abstract: | Pulsed-plasma surface treatment of VK20 hard-alloy (WC + 20% Co) components changes the crystallite size by 10–20% and enriches the binding metal Co with complex carbides of type W6Co6C and W3Co3C and nonequilibrium carbides of composition W2C, WC1-x, and W6C2.54. The internal stress (compression) reaches 800 N/mm2. Industrial tests show that pulsed-plasma treatment increases the wear resistance of the working surface of VK 20 hard-alloy (WC + 20% Co) rollers (rolling disks) by a factor of 2–4. |
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