Effect of Preheating on Punch Force, Sheared Surface  and Work Hardening in Cold Punching Process  of Commercially Pure Titanium Sheet

Kurniawan, Yani; Mahardika, Muslim; Suyitno, Suyitno; Amrullah, Muhammad Haritsah

doi:10.15866/ireme.v13i9.17398

Cited by 2 publications

(6 citation statements)

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“…Burnish height on the radius side (Nside and L-side) is higher than that on the straight side (K-side and M-side), and the burr height on the straight side is higher than that on the radius side. This result has the same trend as prior research [40].…”

Section: Punched Holessupporting

confidence: 88%

“…The straight side (K side and M side) has a unidirectional direction of grain movement, while on the inner radius side (N-side) the grain movement is centered on the radius. The grain movement centered on the radius has a higher compressive stress than the unidirectional direction of grain movement in the sheet along the deformation zone, as reported in previous studies [40]. This high compressive stress increases rollover height and delays the fracture set, hence increasing the burnish height.…”

Section: Punched Holessupporting

confidence: 63%

“…It found that the burr height decreased with decreased clearance, as the burr height resulted was shorter when using clearance of 5%. Moreover, non-symmetric punching was investigated by Subramanian et al [40] in steel. This investigation shows that the sheared surface quality in each edge is different as evident by the higher burnish height in radius edge than that in the straight edge.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of the Non-Symmetric Punching Process Parameter on the Hole Shape and Quality of a Commercially Pure Titanium Sheet

Mahardika,

Kurniawan,

et al. 2023

Jurnal Teknologi

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Recently, punching technology has become one of the promising manufacturing techniques for a thin metallic sheet. The processing parameters used in this technique have been recognized to influence the hole shape produced in the working materials. Therefore, it is important to understand the effect of the punching process parameters on the hole shape and quality over the manufactured materials. This study aims to determine the influence of the punching process on the non-symmetrical hole shape and quality over a commercially pure titanium sheet. The effect of punch speed on the punch force and the sheared surface is also studied, by applying the punch velocities of 10, 35 and 70 mm/s. The sheared surface of the hole was examined at its four different sides, namely K (straight), L (outer radius), N (inner radius) and M (straight). The results show uneven distribution of punch strength as detected at the affected region of the non-symmetrical hole. In addition, the punch force increased with the increase of punch speed. Meanwhile, the sheared surfaces on each side were apparently different. The burnish height on the side of the radius was found to be about 0.038 mm higher than that on the straight side. The burnish height on the radius side increases by 0.43 mm with the increasing punch speed from 10 to 70 mm/s. However, the increased punch velocity did not always increase the burr height. The work hardening that occurs on the straight side is smaller by about 15% than the radius side.

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Section: Punched Holessupporting

confidence: 88%

Section: Punched Holessupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Influence of the Non-Symmetric Punching Process Parameter on the Hole Shape and Quality of a Commercially Pure Titanium Sheet

Mahardika,

Kurniawan,

et al. 2023

Jurnal Teknologi

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“…CP-Ti sheet has a hardness of about 160 VHN. Jaw implant and electrode materials were selected based on Kurniawan et al (Kurniawan et al, 2019). The electrode (Figure 1) material uses copper.…”

Section: Methodsmentioning

confidence: 99%

“…Testing the hardness of jaw implants using the Vickers microhardness test. Hardness testing uses a 100 gram load with a loading time of 10 s (Kurniawan et al, 2019;Kurniawan, 2021). Hardness measurements were carried out in the white layer area and inside the inner radius, outer radius, and straight sides.…”

Section: Hardness Testingmentioning

confidence: 99%

Effect of Heat Treatment Temperature on Hardness of Jaw Implant Produced from EDM Die-Sinking Process

M. F. R. Suharyanto,

Yani Kurniawan

2024

ASIIMETRIK

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Hardness is the main problem in making jaw implants using the die-sinking EDM process. Heat treatment can increase the hardness of jaw implants resulting from the EDM process. This research investigates the influence of temperature during the heat treatment process on the hardness of jaw implants produced from the EDM process. Heat treatment uses a quenching process. The quenching temperatures used were 940, 950, and 960 ºC, while the holding time was 30 minutes. The aging temperature is 550 ºC. The research results show that the greater the quenching temperature, the greater the increase in hardness. The hardness of the white layer reaches 713 VHN when using a temperature of 960 ºC. Meanwhile, the hardness of the inner jaw implant reaches 354 VHN.

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Effect of Preheating on Punch Force, Sheared Surface and Work Hardening in Cold Punching Process of Commercially Pure Titanium Sheet

Cited by 2 publications

References 0 publications

The Influence of the Non-Symmetric Punching Process Parameter on the Hole Shape and Quality of a Commercially Pure Titanium Sheet

The Influence of the Non-Symmetric Punching Process Parameter on the Hole Shape and Quality of a Commercially Pure Titanium Sheet

Effect of Heat Treatment Temperature on Hardness of Jaw Implant Produced from EDM Die-Sinking Process

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