Keywords
load-bearing capacity
structural steel
How to Cite
Abstract
Testing the load-bearing capacity of press-fit connections is a key step in the design and evaluation of mechanical connections used in industry. Ensuring appropriate surface treatment can positively impact the load-bearing capacity of connections. One type of strengthening treatment is burnishing. By plastically strengthening and smoothing the surface layer, slide burnishing improves pressure distribution and inhibits the development of micro-slippage, resulting in higher durability and reliability of connections. Considering the benefits of this treatment, this article presents research on the effect of sliding burnishing on the load-bearing capacity of plug - sleeve press-fit connections for 1.0503 structural steel. The influence of pressing and disconnection forces on the joint after turning and slide burnishing was compared. The test results showed that slide burnishing increases the load-bearing capacity of press-fit connections. For press fit values ranging from 0.001 to 0.005 mm, an average increase in load capacity of 66.1% was achieved compared to the turned surface. A high correlation coefficient was observed between the pressing force and the force required to disconnect the connection. For the turned surface, the correlation coefficient was R2 = 0.98, while for the burnished surface R2 = 0.99.
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