Investigating the wear behavior of high-speed steel tools in turning AISI

One of the most important issues in machining processes is the optimal use of resources, including tools, coolants and time, by achieving optimal parameters. The presence of friction between tools and workpieces during machining has always led to a rise in temperature and a negative impact on machining parameters, especially on tool life.Steel 1045 is one of the most difficult metals to machine in industry, and its machining usually results in damage to the tool and a reduction in tool life and the time required for machining. In addition, its high wear resistance makes it one of the most commonly used metals in various industries. Increasing the tool life is very important when machining this steel. In this study, by changing the cutting and clearance angles of the highspeed steel tool when turning 1045 steel, the effect of the above parameters on the amount of tool wear at cutting speeds of 30 and 40 m/min at two feed rates of 0.05 and 0.2 millimeters per lap was examined. The innovations carried out in this research include the modifications made to the TN50 lathe in Tabriz and the transformation of the machine into a CNC machine, the use of highspeed steel tools in the machining of 1045 steel, and the use of the CNCMCO microscope. The results showed that, on average, the free angle of 9 degrees and the rake angle of 15 degrees reduce the tool wear due to a more suitable wedge angle to maintain the strength of the cutting edge of the tool and a suitable rake angle to remove the crisps from the working surface faster. will In addition, with the increase of the cutting speed and the feed rate, the tool life is reduced due to the increase of the temperature of the cutting edge of the tool, which can be understood by comparing the resulting data.