The Effect of Thickness and Type of Material on the Sheared Edge Characteristics of Keychain Cranioplasty Plate Blanking Product Using Eccentric Press Machine

Didin Zakariya Lubis, Lea Rachmat Indrasepta, Redyarsa Dharma Bintara, Rizky Ramadhan, Agung Budi Darmawan


Keychain cranioplasty plate product has the potential to be produced using the blanking process because it is faster, low-cost, and requires low-energy consumption compared to other mechanical operations. This research aimed to find the effect of material thickness and type on the sheared edge characteristics of keychain cranioplasty plate using the blanking process to meet the international health standard. Experimental research conducted using an eccentric press machine with 40 tons capacity. This research’s test material parameters of titanium (Ti-6AL-4V) and stainless steel (SS-316L) were the 0.5 mm, 0.6 mm, and 0.8 mm thickness with a maximum blanking velocity of 3000 mm/min and 2.5% punch-die clearance. Then, the blanking products were observed using a digital microscope. The results showed that the optimum blanking product quality was found in the titanium (Ti-6AL-4V) and stainless steel (SS-316L) materials with 0.6 mm thickness because it had stable sheared edge characteristics in each zone compared to other variations.


Blanking, clearance, keychain cranioplasty plate, punch, sheared edge characteristics

Full Text:



Kemenkes RI, "Center for Data and Information on Indonesia's Health Profile 2016", InfoDATIN, 2017.

Mahmoud, D., Al-Rubaie, K. S., Elbestawi, M. A., "The Influence of Selective Laser Melting Defects on the Fatigue Properties of Ti6Al4V Porosity Graded Gyroids for Bone Implants", International Journal of Mechanical Sciences, vol. 193, 106180, 2021.

Singh, G., Sharma, N., Kumar, D., Hegabd, H., "Design, Development and Tribological Characterization of Ti–6Al–4V/hydroxyapatite Composite for Bio-implant Applications", Materials Chemistry and Physics, vol 243, 122662, 2020.

Festas, A.J, Pereira, R. B., Ramos, A., and Davim, J. P., "A Study of the Effect of Conventional Drilling and Helical Milling in Surface Quality in Titanium Ti-6Al-4V and Ti-6AL-7Nb Alloys for Medical Applications", Arabian Journal for Science and Engineering, vol. 46, pp 2361–2369, 2021.

Bubphachot B., "Microstructure Affecting Cutting Quality in Fine Blanking Process Microstructure Affecting Cutting Quality in Fine Blanking Process", American J. of Engineering and Applied Sciences, vol. 2 (4), pp. 665-668, 2009.

Arifvianto, B., Suyitno, and Mahardika, M, "Effect of Sandblasting and Surface Mechanical Attrition Treatment on Surface Roughness, Wettability, and Microhardness Distribution of AISI 316L", Key Engineering Materials, vol. 462–463, pp. 738–743, 2011.

Lubis, D. Z. and Ristiawan, I., "Blanking Clearance and Punch Velocity Effects on The Sheared Edge Characteristic in Micro-Blanking of Commercially Pure Copper Sheet", Journal of Mechanical Engineering Science and Technology, vol. 1(1), pp. 53–60, 2017.

Levy, B. S. and Van Tyne, C. J., "Review of The Shearing Process for Sheet Steels and Its Effect on Sheared-Edge Stretching", Journal of Materials Engineering and Performance, vol. 21(7), pp. 1205–1213, 2012.

Kalpakjian, S. and Schmid, S. R., "Manufacturing Engineering and Technology in SI Units", Manufacturing Engineering and Technology, pp. 502 (2009).

Grünbaum, A., "Reply to Symposium on the Grünbaum Debate", Psychoanal, Dialogues, vol. 10(2), pp. 335–342, 2000.

Ristiawan, I., and Mahardika, M., "Effect Of Clearance and Punch Speed on The Cutting Surface Quality Results of a Brass Blanking on The Micropunch CNC Machine", AIP Conference Proceedings, vol. 20054, pp. 1–10, 2017.

Engin, K. E., and Eyercioglu, O., "Investigation of the Process Parameters on The Blanking of AISI 304 Stainless Steel by Using Finite Element Method", Journal of Mechanics Engineering and Automation, vol. 6, pp. 356–363, 2016.

Liu, Y., Wang, C., Guo, B., Shan, D., and Zhang, M., "Softening Effect of Ultrasonic Vibration on Micro-blanking Deformation Behaviour of Titanium Foil", Micro & Nano Letters, vol. 12, pp. 808–812, 2017.

Aravind, U., Chakkingal, U., and Venugopal, P., "A Review of Fine Blanking: Influence of Die Design and Process Parameters on Edge Quality", Journal of Materials Engineering and Performance, vol. 30, pp. 1–32, 2021.

Majerníková, J. and Spišák, E., "Punch-Die Gap Effect on Blanked Edge in Fine Blanking of Low-Carbon, Micro-Alloyed and High-Strength Steels", Applied Mechanics and Materials, vol. 474, pp. 279–284, 2014.

Kulkarni, D., Adhikraoshinde, R., and Badgujar, J. P., "Clearance Optimization of Blanking Process", International Journal of Scientific & Engineering Research, vol. 6(12), pp. 178–191, 2015.



  • There are currently no refbacks.

Copyright (c) 2021 Journal of Mechanical Engineering Science and Technology (JMEST)

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

View My Stats