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All Journal INTERNATIONAL JOURNAL OF MECHANICAL COMPUTATIONAL AND MANUFACTURING RESEARCH
Simanjuntak, Jefri Kemri Rodi Samuel
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Mechanical Engineering

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Dimensional check of weld neck flange based on ASME B16.5 Ritonga, Fatima Sari; Purba, Adi Syahputra; Simanjuntak, Jefri Kemri Rodi Samuel; Fadilah, Nurul; Amalia, Mutia
International Journal of Mechanical Computational and Manufacturing Research Vol. 14 No. 2 (2025): August: Mechanical Computational And Manufacturing Research
Publisher : Trigin Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/computational.v14i2.268

Abstract

This study aims to verify that the dimensions of a weld neck flange conform to ASME B16.5 standards. The flange used is a raised face type made of carbon steel ASTM A105N with 16-inch NPS, selected for its corrosion resistance, and welded with UNS 006625, a nickel-rich alloy that enhances corrosion protection. Dimensional checks were performed on five samples, each measured three times, using both visual inspection and measuring tools, including a roughness comparator and vernier caliper. Key dimensions measured include outside diameter (705 mm, tolerance +4 mm/-1 mm), inside diameter (333.3 mm, ±1.5 mm), bolt circle diameter (616 mm, ±1.5 mm), flange thickness (88.90 mm, +3 mm), and hub thickness (30.43 mm post-welding, with tolerance not less than 12.5% of pipe wall thickness) the visual inspection assessed surface roughness within the acceptable range of 3.2 µm to 6.3 µm. The inspection results showed that all measured dimensions were within the permissible limits, confirming that the weld neck flange meets the requirements of ASME B16.5.
Identification of flow mark defect on haitian MA 1200 machine in the molding process at PT. Philips Industries Batam Juwita, Erna; Purba, Adi Syahputra; Simanjuntak, Jefri Kemri Rodi Samuel; Br. Manurung, Agnes; Mutiarani, Mutiarani
International Journal of Mechanical Computational and Manufacturing Research Vol. 14 No. 2 (2025): August: Mechanical Computational And Manufacturing Research
Publisher : Trigin Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/computational.v14i2.269

Abstract

PT Philips Industries Batam is a company engaged in the manufacturing sector. One of the production processes carried out at PT Philips Industries Batam is the molding process. In the industrial world, the molding process has several types of defects that can affect product quality. The highest number of defects was identified to find the root cause using the Pareto and Fishbone diagram. This research aims to identify the factors causing the defect. Parameters on the Haitian MA 1200 machine were identified to determine the cause of the flow mark defect, thereby improving the quality level of the produced products. From five trials, the optimal parameter setting value was found in the fifth trial. The parameter settings consist of the start post: inject 1 with a value of 63, inject 2 with a value of 42, pressure: inject 1 with a value of 165, inject 2 with a value of 155. Pressure: hold 1 with a value of 55, hold 2 with a value of 45, and flow: hold 1 with a value of 18 and hold 2 with a value of 13. The flow mark defect on the Haitian MA 1200 machine effectively decreased by adjusting certain parameters.
Co-Authors Amalia, Mutia Br. Manurung, Agnes Erna Juwita Mutiarani Mutiarani Nurul Fadilah, Nurul Purba, Adi Syahputra Ritonga, Fatima Sari