PUTRA, RAMA IRLANGGA (2026) STUDI EFEK CROWN BARE PADA PROSES CURING TIRE AKIBAT KELEBIHAN VOLUME BLADDER PADA PT.JKL. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The performance of a curing machine is highly influenced by its operating parameters, particularly in the curing process of tire forming. Tire forming involves specific parameters, namely the distribution of pressure through the piping system to the bladder, in order to produce the required shape for the production process. Crown bare is one of the product defects caused by excessive bladder volume. Changes in bladder volume are accompanied by variations in other parameters such as pressure, flow rate, and Reynolds number. The research method was conducted through the analysis of machine parameters including bladder volume, system pressure, flow rate, and Reynolds number. Data were obtained through measurement and calculation based on fluid mechanics principles and bladder geometry. The results show that under normal operating conditions, the machine operates at a pressure of 1.0 kg/cm², a flow rate of 2.1 L/s, a Reynolds number of 5680, and a bladder volume of 15.71 L. Under abnormal conditions, the pressure increases to 1.2 kg/cm², the flow rate to 2.91 L/s, the Reynolds number to 9150, and the bladder volume to 19.76 L. Therefore, bladder volume and machine operating parameters have a direct influence on the occurrence of crown bare. Keywords: Geometry, Bladder, Flow Rate, Pressure, Reynolds Number. Kinerja mesin curing sangat dipengaruhi oleh kondisi parameter saat sedang beroperasi, salah proses curing yakni pembentukan ban. Pembentukan ban memiliki parameter khusus yakni pendistribusian tekanan pada sistem pipa hingga ke bladder hingga menghasilkan bentuk yang sesuai untuk proses produksi. Crown bare menjadi salah satu kegagalan hasil dikarenakan kelebihan volume bladder. Perubahan volume bladder diikuti dengan perubahan nilai parameter lain seperti tekanan, laju aliran dan nilai reynold. Metode penelitian dilakukan melalui analisis parameter mesin meliputi volume bladder, tekanan sistem, laju aliran, dan nilai reynold. Data diperoleh melalui pengukuran dan perhitungan berdasarkan prinsip mekanika fluida serta geometri bladder. Hasil penelitian menunjukkan bahwa pada kondisi normal mesin beroperasi dengn parameter tekanan 1,0 Kg/cm2, laju aliran 2,1 L/s, nilai reynold 5680 dengan volume bladder sebesar 15,71 L sedangkan pada kondisi abnormal terjadi perubahan nilai tekanan menjadi 1,2 Kg/cm2, laju aliran 2,91 L/s, nilai reynold 9150 dengan volume bladder sebesar 19,76 L. Dengan demikian, kondisi volume bladder dan parameter mesin memiliki pengaruh langsung terhadap crown bare. Kata Kunci : Geometri, Bladder, Laju aliran, Tekanan, bilangan reynold
| Item Type: | Thesis (S1) |
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| NIM/NIDN Creators: | 41324110033 |
| Uncontrolled Keywords: | Geometri, Bladder, Laju aliran, Tekanan, bilangan reynold |
| Subjects: | 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 627 Hydraulic Engineering/Rekayasa Hidrolik 600 Technology/Teknologi > 690 Buildings/Teknik Bangunan > 696 Energy and Environmental of Building/Pengaturan Energi dan Lingkungan Sekitar Bangunan > 696.3 Steam Fitting/Pemasangan Pipa Uap |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 31 Mar 2026 01:09 |
| Last Modified: | 31 Mar 2026 01:09 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/101791 |
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