On the Use of Powder Alloys for Friction Units

• Published in: Procedia engineering 2017, Vol.206, p.576-580
• Main Authors: Burov, A.M., Danenko, V.F., Ivanov, M.V.
• Format: Article
• Language: English
• Subjects: antifriction alloy; bearings of sliding; friction unit; furnace charge; hot-forming; powder alloy; rolling; sintering
• ISSN: 1877-7058; 1877-7058
• DOI: 10.1016/j.proeng.2017.10.519

The data, confirming the prospects of the use of powder alloys in comparison with compact alloys, for production of details of friction units of machines: bearings of sliding and rolling, is provided. The technology of production of porous powder alloy is suggested. It provides the sliding bearing in of self-lubrication conditions. This increases the wear resistance of the bearing and guarantees a long operation cycle of the machines until the next maintenance. Modifying porous alloy SP50D5 by introduction bronze Br. 010 into the furnace charge instead of copper allowed reducing the sintering temperature, and the introduction of zinc sulfide ZnS contributed to the formation of fine pearlite in the structure of the alloy and, respectively, to the average 25% increase in the strength properties of the alloy at plasticity preservation. The manufacturing technology of the hot-stamped powder bimetal is developed for the kinematic couple of rolling friction, consisting of high-plastic core from alloy SP30D2N3 and high-strength, wear-resistant outer layer from alloy SP80H3, the use of which will allow increasing the operational properties of interfaces of details of friction units of rolling of machines and thw equipment at the level of the serial analogs, in case of the decrease in technological costs and the cost of products.