Technological Assurance of the Quality of Slide Bearing Shells Based on Two-Stage Magnetic Abrasive Finishing

The article describes the methodology of a two-stage finishing process for slide bearing shells made of bronze. The goal of the first finishing stage was to form a base roughness profile with uniform values of the controlled parameters. Based on the results of the first stage, regression equations were derived. These equations make it possible to evaluate the effectiveness of the influence of the process variable factors (tool rotational speed, feed rate, processing time, and workpiece diameter values) of magnetic abrasive finishing on the value of the controlled parameters. The results showed that the parameters of tool rotational speed and processing time have the greatest influence. In the second stage of the experimental research, a two-factor experiment (varying the time and abrasive grain sizes) was conducted. The aim of this stage was to test the possibility of applying oil-retaining grooves onto the formed profile. The results showed that the most noticeable grooves are formed at a processing time of ۶ minutes and an abrasive grain size of ۳۵۰ μm. The roughness parameters did not increase significantly compared to the values after the first processing stage. The need for further research to evaluate the operational characteristics of the machined workpieces during wear testing is established.

کلیدواژه ها:

Magnetic abrasive finishing ، oil-retaining grooves ، parameters of roughness ، micro hardness ، regression equations