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      • Undergraduate Theses
      • UT - Faculty of Forestry and Environment
      • UT - Forestry Products
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      Karakteristik Chip dan Tingkat Emisi Pemotongan Medium Density Fiberboard Menggunakan Berbagai Helix Pisau High Speed Steel.

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      Date
      2023-08-24
      Author
      Arrafi, Muhammad Abshar Naufan
      Darmawan, I Wayan
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      Abstract
      Pengerjaan kayu menghasilkan emisi dan serpihan chip yang berbahaya. Pemilihan pisau penting untuk mengontrol emisi dan serpihan chip yang berlebihan. Emisi dan serpihan chip saat pemotongan berpengaruh terhadap kesehatan pekerja dan hasil pemotongan. Penelitian ini bertujuan melihat pengaruh sudut helix terhadap emisi dan karakteristik chip yang dihasilkan pada MDF. Kayu dipotong menggunakan mesin CNC dan pisau dengan helix (0°, 15°, 30°, 45°, 60°, 75°), laju pengumpanan (500, 1000, 1500, 2000 mm min-1) dan kecepatan pemutaran pisau (10.000, 20.000 rpm). Hasil penelitian menunjukkan semakin besar helix, kecepatan pisau dan laju pengumpanan rendah, kadar VOCs yang dihasilkan semakin tinggi. Uji kebisingan menunjukkan helix rendah, laju pengumpanan tinggi serta kecepatan pemutaran pisau tinggi menghasilkan kebisingan yang tinggi. Helix dan kecepatan pemutaran pisau yang rendah menghasilkan sudut aliran chip yang rendah, sedangkan laju pengumpanan tinggi membuat aliran chip menyebar. Pengujian formasi chip menunjukkan bahwa helix tinggi menghasilkan banyak flow chip dan helix rendah menghasilkan granule. Penggunaan helix, kecepatan pemutaran tinggi dan laju pengumpanan yang rendah menghasilkan berat total chip yang besar. Keausan mata pisau paling tinggi terjadi pada helix 0°.
       
      Working with wood produces harmful emissions and chips distribution. Cutting selection is important to control the emissions and excessive chip distribution. Emissions and chips during cutting affect worker health and cutting results. This study aimed to investigate the effect of the helix angle on the emission and chip characteristics produced during MDF milling. MDF was cut using a CNC machine and helical router bit (0°, 15°, 30°, 45°, 60°, 75°), feed rate (500, 1000, 1500, 2000 mm min-1) and spindle rotation speed (10,000, 20,000 rpm). The results showed that the larger the helix, the lower the blade speed and the feed rate, the higher the VOCs content produced. The noise test showed that low helix, high feed rate and high spindle rotation speed resulted in higher noise. Lower helix angle and spindle rotation speed resulted in a low chip flow angle, whereas high feed speed made the chip flow spread out. Testing on chip formation showed that high helix angle tended to produce flow-chips and the lower helix angle produced granules. The use high helix angle, high spindle speed and lower feed speed produced higher weight of the chips. The highest cutting edge wear of the router bit occurred at helix 0°.
       
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      http://repository.ipb.ac.id/handle/123456789/124339
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      • UT - Forestry Products [2466]

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      Indonesia DSpace Group 
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