Analisis Defect Burry Spinning Tube Liquid Terhadap Potensi Kebocoran Refrigeran pada Sistem AC Mobil Menggunakan Simulasi Komputasi Ansys
DOI:
https://doi.org/10.22441/jonem.v1i3.16172Keywords:
Air conditioning (AC), Spinning tube, Burry defectAbstract
A company engaged in the manufacture of components for car Air Conditioning, one of which is a Tube. Tube is an integrated part in the Air Conditioning (AC) system which functions as a connection used to tighten and prevent refrigerant leakage. From the data from 2019 to 2021, there were 63 customer claims on the tube, one of which was refrigerant leakage. The cause of leakage in the tube is the presence of a defect burry, scratch, and crack. Of the three types of defects that occur in tube spinning, the burry defect is a problem that often arises compared to other defects. Therefore, the purpose of this study was to determine how big the dimensions of the defect burry in the spinning tube liquid can cause the AC system to leak. The specimens used vary based on the dimensions of the height and thickness of the defect burry, and the dimensions of the defect burry in specimen 1 (0 mm - 0.05 mm). ), specimen 2 (0.05 mm - 0.10 mm), specimen 3 (0.10 mm – 0.15 mm), specimen 4 (0.15 – 0.20 mm) and specimen 5 (0.20 mm – 0.25 mm). The method used is to perform a leak test on a water leak test machine with three defect burry positions, namely at the spinning end position, outside spinning and spinning groove. Then a simulation is carried out by applying a pressure of 3 MPa to the defect burry using an ansys computational simulation of the static structural method. The results of this study are that specimens 2 to 5 have leaks when the position of the defect burry is in the outside spinning and groove spinning area, specimen 2 is the lowest in resisting pressure of 3 Mpa with a maximum stress of 2.7039 Mpa and the recommended dimensional tolerance of the defect burry spinning tube liquid is a maximum of 0.05 mm because it does not leak when the defect burry is in an area outside the spinning and spinning groove.
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