Application of Forging Hammer to Increases Productivity of Balinesse Blacksmith

Santosa, I Gede and Yusuf, Muhammad and Gunung, I Nyoman and Rimpung, I Ketut (2021) Application of Forging Hammer to Increases Productivity of Balinesse Blacksmith. In: the International Conference on Innovation in Science and Technology (ICIST 2020), 2020.

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Bali consists of nine districts where aside from working in the tourism industries, the citizen also works as an artist and craftsman. The craftsman produces several kinds of handicrafts such as sculptures, souvenirs, metal crafts, and others. Generally, the craftsmen in Bali are categorized as micro, small and medium enterprises (MSMEs), therefore, their equipment used in the production process is still conventional. One of the MSMEs referred to the blacksmith in the village of Gubug Tabanan. A blacksmith is a person who produces items made of wrought steel or iron by forging the metal, using tools to repeatedly bend, hammer, cut, and shaped as desired. The process of repeatedly hitting the material is deemed ineffective, requires a relatively long time and exhausting, which makes the production is not optimal. From the results of preliminary observations, it was known that the average age of the subjects in this study was 36.15 years, the average body weight of the subjects was 62.15 kg, while the average height of the subjects was 165.95 cm, and the average work experience of 13,85 years. From age, weight and height are included in the normal category. First, the anthropometry subjects for the 5th percentile were: palm length of 18.68 cm, palm width of 10.09 cm, and elbow height of 103.95. Second, for the 50th percentile, they had a palm length of 19.00 cm, a palm width of 10.80 cm, and an elbow height of 106.00 cm. Last, people categorized in the 95th percentile had palm length of 19.30 cm, palm width of 10.91 cm, and elbow height standing of 108.05 cm. The initial workload measurement showed that the results were not significantly different (p> 0.05) with t = - 0.09 and p = 0.93. It illustrated that the resting pulse rates of group I and group II in the first experiment period were similar. By designing this hammer forging machine, it is hoped that it could speed up forging time, have a more precise size, and produce a smoother surface, therefore, the blacksmiths in the village of Gubug Tabanan are expected to increase their income and welfare. The observation results of 20 craftsmen before and after using the machine showed a decrease in workload based on their work pulse, from 100.95 bpm to 87.81 bpm (p <0.05). The decrease in subjective complaints according to the fatigue score was 43.21 to 34.01 (p <0.05). Then, based on musculoskeletal complaints after worked with conventional tools it was 43.85 while with new tools it decreased to 32.94 (p <0.05). Finally, the productivity also increased significantly (23.88%) from 0.0289 by using conventional tools and improved to 0.0358 by using new tools (p <0.05).

Item Type: Conference or Workshop Item (Paper)
Subjects: Ilmu Teknik > Ilmu Keteknikan Industri > Teknik Mesin (dan Ilmu Permesinan Lain)
Divisions: Jurusan Teknik Mesin > Prodi D3 Teknik Mesin > Publikasi
Depositing User: I Gede Santosa
Date Deposited: 03 Dec 2022 22:44
Last Modified: 03 Dec 2022 22:44

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