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The Influence of P2 and PC3 Polygonal Shaft Machining Parameters on the Quality of Machining Results Using a Mazak CNC Type QTE 200-MY SG Syahrul Rhamadhan; Irza Sukmana; Rizal Adi Saputra; Novrinaldi
Journal of Applied Science, Engineering and Technology Vol. 5 No. 2 (2025): December 2025
Publisher : INSTEP Network

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47355/jaset.v5i2.95

Abstract

Shafts are vital components in mechanical systems that function to transmit motion to elements such as rotors and gears. Although keyed and splined joints are commonly used due to their ease of manufacturing, polygonal shafts of the P2 and PC3 types according to DIN standards offer advantages in transmission efficiency and torque resistance. This study focuses on the CAD modeling, CAM simulation, and CNC machining of P2- and PC3-type coupling shafts. The modeling was carried out using SolidWorks based on DIN standard dimensions, while the CAM simulation was conducted using Esprit TNG. The machining process employed a Mazak CNC QTE 200-MY SG machine with parameter variations based on material type (carbon steel and stainless steel). Evaluation was performed through surface roughness measurements using a surface roughness tester and dimensional inspection using a Coordinate Measuring Machine (CMM). The results show that the toolpath runs optimally, and the depth of cut (DoC) has a significant effect on surface quality. A smaller DoC produces a smoother surface but requires longer machining time, whereas a larger DoC speeds up the process but reduces surface quality. Dimensional deviations from the CAD design are suspected to be caused by suboptimal quantity and distribution of reference points during CMM measurement.
Experimental Study on the Effect of Single and Double Quenching-Tempering on the Mechanical Properties of AISI 1045 Steel Syaipudin Anwar; Harnowo Supriadi; Nafrizal; Rizal Adi Saputra; Andree Agasy Nofma
RING ME Vol 6 No 1 (2026): RING Mechanical Engineering (In Progrees)
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/rme.v6i1.25379

Abstract

This study examined the effects of quenching, single quenching–tempering (SQT), and double quenching–tempering (DQT) on the microstructure and mechanical properties of AISI 1045 medium-carbon steel (0.54% C, 0.32% Si, 0.65% Mn, 0.015% P, 0.0112% S, balance Fe). All specimens were heated to 850°C for 25 minutes and quenched in coconut oil at 100°C. Tempering was subsequently performed at 650°C for the SQT and DQT treatments. Hardness testing revealed that quenching produced the highest hardness value of 242.38 kg/mm² due to the formation of martensite. The SQT treatment reduced hardness to 198.46 kg/mm², indicating improved toughness while maintaining relatively high hardness. Further reduction in hardness was observed in the DQT-treated specimens, reaching 158.13 kg/mm², reflecting a more ductile and tougher microstructure. Impact properties were evaluated using the Charpy method. Heat-treated specimens exhibited significantly higher impact strength than the untreated material. The SQT process increased impact strength to 1.5792 J/mm², demonstrating the beneficial effect of tempering on toughness. The highest impact strength was achieved through DQT, reaching 1.8542 J/mm², indicating superior energy absorption capability. The results show that repeated quenching and tempering cycles effectively enhance the toughness of AISI 1045 steel, although accompanied by a reduction in hardness. Overall, DQT provided the best improvement in impact resistance and toughness among the heat treatment conditions investigated.