PENGARUH VARIASI SUDUT PEMBENGKOKAN PIPA PADA PENGERJAAN DINGIN TERHADAP STRUKTUR MIKRO DAN KEKERASAN PADA PIPA BAJA KARBON RENDAH ST37
| Main Author: | Rionaeldy, Rayvan |
|---|---|
| Format: | Thesis NonPeerReviewed Book |
| Bahasa: | eng |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
http://eprints.umm.ac.id/56668/1/PENDAHULUAN.pdf http://eprints.umm.ac.id/56668/2/BAB%20I.pdf http://eprints.umm.ac.id/56668/3/BAB%20II.pdf http://eprints.umm.ac.id/56668/4/BAB%20III.pdf http://eprints.umm.ac.id/56668/5/BAB%20IV.pdf http://eprints.umm.ac.id/56668/6/BAB%20V.pdf http://eprints.umm.ac.id/56668/7/LAMPIRAN.pdf http://eprints.umm.ac.id/56668/8/POSTER.pdf http://eprints.umm.ac.id/56668/ |
Daftar Isi:
- Steel is a metal that is widely used in the industrial world due to several advantages such as wear resistance, tenacity and toughness. Increasing or changing mechanical properties is usually done by the addition of other elements, such as carbon with cold treatment. The purpose of this study was to determine the results of changes in hardness and microstructure photographs on the variation of the cold working angle bending process of the ST37 steel pipe. The method used in this study is an experimental method that is bending pipe bending with bending angle variations. This study uses low carbon steel material ST37 to see how strong/far the material used can survive, and to see how far the influence of strain hardening. The angle variations used in this study are 45o, 90o, 135o and 180o. the results of the greatest increase in hardness at an angle of 45o in the indentation section of the pipe (inplane) amounted to 130.13 kg/mm2 and which experienced a decrease in the value of the smallest hardness at an angle of 135o in the outplane indentation portion of 108.61 kg/mm2. Where the standard 180o pipe hardness value does not experience bending of 112.21 kg/mm2. It can be concluded that the hardness value of pipe bends in the inner grooves will experience an increase in the value of hardness, while in the outer curves the value of violence will decrease. In photo microstructure research the process of forming the arch can make the shape of the grain structure to be elongated in the outer arch and shortened in the inner arch. At an angle of 45o perlite the inplane section is denser than the perlite part of the angle of 90o and 135o due to a deeper bend angle at an angle of 45o. Similarly, the outplane section of the 45o pearlite angle experiences more strain than the perlite part of the outplane angle of 90o and 135o due to the greater bending angle at an angle of 45o.