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Using silumin grinding waste for new self-lubricating antifriction composites
 
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Ukryj
1
Wroclaw University of Science and Technology
 
2
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37 Peremogy Ave., 03057 Kyiv, Ukraine
 
3
National Technical University of Ukraine, “Igor Sikorsky Kyiv Polytechnic Institute”, Faculty of Management and Marketing, 37 Peremogy ave, 03057 Kyiv, Ukraine
 
 
Autor do korespondencji
Martyna Zemlik   

Wroclaw University of Science and Technology
 
 
 
SŁOWA KLUCZOWE
DZIEDZINY
 
STRESZCZENIE
The article studies the influence of manufacture technology on the structure and properties of new antifriction self-lubricating composites based on AK12M2 aluminum alloy grinding waste with MoS2 solid lubricant additives for the contact pairs operating at sliding speeds of 1.0–3.0 m/s and loads of 2.0–4.0 MPa. AK12M2 grinding waste was dried from moisture and cleaned from contamination with abrasive particles. Then the purified metal powders were mixed with non-metallic powders of MoS2 solid lubricant and pressed at 470-520 MPa at room temperature. The formed briquettes were subjected to hot pressing at a pressure of 300 MPa and a temperature of 400°C. This technology ensured the formation of the composite’s structure consisting of a metallic aluminum matrix with evenly distributed MoS2 solid lubricant particles. The formed structure contributed to the formation of a high level of mechanical and antifriction properties when working in the self-lubrication mode. Comparative tests showed that the composite based on AK12M2 alloy was not inferior to cast aluminium alloy of the same chemical composition in terms of mechanical properties and exceeds it in tribological properties.
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