Application of CVD Coated Turning Inserts in the Machining of ABNT 8620 Steel at Different Cutting Speeds

Objective: The objective of this study is to analyze turning inserts by evaluating their wear when increasing the cutting speed. Theoretical Framework: This topic presents the main concepts and theories that support the research. The use of CVD-coated turning inserts in the machining of ABNT 8620 steel stands out, reflecting scientific and technological advances that integrate several historical, cultural and social demands. Machining insert technology has been standing out for decades, and such research has led to an increase in the useful life of tools, in addition to ensuring a better surface finish and thermal control of the entire process. This ensures the industry savings in the use of inserts and results in reduced spending on purchasing new inputs and optimizes the material resources used. Method: The methodology adopted for this research involves using turning inserts to evaluate their wear when increasing the cutting speed. The material used as the test specimen in question is ABNT 8620, which remains the standard in all tests. For each test, the WNMG060408-TM insert was used to analyze aspects such as power, temperature and vibration. Results and Discussion: The results obtained revealed that by analyzing the machining chips, we can see that the formation of all of them was similar, and can be classified as spiral and not exceeding 40 mm, in the worst condition. This fact was to be expected and can be explained by the constant advance even with different cutting speeds, causing the material to remain within the chip formation zone. Research Implications: The practical and theoretical implications of this research are discussed, providing insights into how the results can be applied or influenced so that regardless of cutting speed, chip formation remains consistent under similar cutting conditions. Originality/Value: This study contributes to the literature due to the originality of the research, whether through an innovative approach, new discoveries or practical contributions. The relevance and value of this research are evidenced by the conclusion that the best cutting speed for this type of coating, insert and material is 350 m/min, having a better surface finish of the finished part, shorter chip length and a long contact time, providing the industry with a more aggressive cutting parameter and a good insert life, bringing with it greater productivity for the process.