{"data":{"id":2532,"url":"https:\/\/repo.xbbh.net\/items\/2532","status":"published","type":"thesis","title":"ANALISIS KEGAGALAN PADA MATERIAL CRUSHER HAMMER PEMECAH BATUBARA UNTUK PLTU BARU OMU DITINJAU DARI SIFAT METALOGRAFI MATERIAL","title_alt":null,"abstract":"Pada tanggal 9 Agustus 2020 mesin crusher hammer di PLTU BARU OMU mengalami gangguan terjadinya Crusher B trip karena alarm vibrasi high yang diakibatkan Hummer Crusher lepas 2 buah, dan ditemukan bekas patahan hummer di line BC-5A, yang mengakibatkan terhambatnya proses penghalusan batubara. Dilakukan beberapa pengujian untuk mengindentifikasi beberapa kegagalan material tersebut terutama dari segi aspek Metalografi Material , Dilakukan Beberapa Pengujian yaitu Uji Komposisi Kimia Spektro , Uji SEM , Uji Mikroskopik dan Makroskopik. Material standard yang harusnya digunakan untuk material Crusher Hammer yaitu ASTM A532 tipe IIA, IIB dan IID.\niBerdasarkan pengamatan istruktur imikro hammer icrusher hasi ipengujian i, diperoleh iperlit, imartensit idan karbida ikromi. Dimana iperlit iditunjukkan dengan iwarna iabu-iabu ibercak iputih, ikarbida ikrom ditunjukkan idengan iwana iputih ibesar, idan martensit iditunjukkan idengan iwarna igelap.\nPerlit imerupakan ihasil dari icampuran ilamellar iantara ferrit idan isementit yang iterbentuk idari dekomposisi iaustenite imelalui ireaksi eutektoid idalam ikeadaan isetimbang (iHabibii, i2010). iMatrik iperlit mempunyai iketahanan iabrasif iyang rendah itetapi imemiliki iketangguhan iyang ibaik. (iElfendri, i2009i). iSehingga peran iperlit idalam ibesi ituang kurang idiperlukan.\nKarbida ikrom iterbentuk karena iadanya iunsur Cr iyang itinggi. iPada ipengujian komposisi ididapatkan inilai Cr idibeberapa isampel idibawah istandard imaterial iASTM A532 itipe iIIAi, IIB dan iIIDi. Unsur iCr ipada imaterial ihigh chromium iwhite icast iiron adalah imembentuk ikarbida iyang istabil dan ikeras iyaitu M7C3 i (Nurjamani, 2012i). iTerbentuknya ikarbida ikrom imeningkatkan sifat imampu ikerasi, iketangguhan, idan iketahanan iabrasi yang ibaik ipada imaterial.\nMartensit imemiliki sifat iyang isangat keras idan getasi, ijika semakin ibanyak ikandungan imartensit iakan imenyebabkan semakin itinggi ikekerasan ipada suatu imateriali. iAdanya martensit idalam istruktur mikro imenyebabkan imaterial ihammer crusher idapat idiklasifikasikan isebagai besi ituang iputih imartensitik (imartensitic iwhite icast ironi).","abstract_alt":null,"creators":[{"role":"author","family_name":"SETIAWAN","given_name":"OKI","orcid":null,"national_id":"NPM2115161051"},{"role":"advisor","family_name":"LUKMAN","given_name":"ASEP","orcid":null,"national_id":"0407077502"}],"year":2021,"date_issued":null,"publication":null,"volume":null,"issue":null,"pages":null,"publisher":null,"isbn":null,"issn":null,"doi":null,"official_url":null,"institution":"Universitas sangga buana YPKP","id_number":null,"thesis_level":"bachelor","publication_status":"published","refereed":null,"keywords":["Kata kunci: Crusher Hammer","ASTM A532"],"language":"id","subjects":[],"divisions":[{"code":"21201","name":"S1 Teknik Mesin","pddikti_code":"21201"}],"citation":"SETIAWAN, OKI (2021) ANALISIS KEGAGALAN PADA MATERIAL CRUSHER HAMMER PEMECAH BATUBARA UNTUK PLTU BARU OMU DITINJAU DARI SIFAT METALOGRAFI MATERIAL. Universitas sangga buana YPKP.","documents":[{"name":"1._COVER.pdf","section":"cover","mime_type":"application\/pdf","size":434566,"sha256":"8fddb7b5313cae8818d62b233fd30ceb574c59eb5fc53a7271a43c1c21817f62","access":"public","embargo_until":null,"license":null,"url":"https:\/\/repo.xbbh.net\/items\/2532\/files\/7689\/1._COVER.pdf"},{"name":"2._LEMBAR_PENGESAHAN.pdf","section":"front_matter","mime_type":"application\/pdf","size":512380,"sha256":"7d4045e5951719a2614e93622d3d33f548e4446ae9435d0780b41e726e1bca67","access":"public","embargo_until":null,"license":null,"url":"https:\/\/repo.xbbh.net\/items\/2532\/files\/7690\/2._LEMBAR_PENGESAHAN.pdf"},{"name":"3._LEMBAR_PERNYATAAN.pdf","section":"front_matter","mime_type":"application\/pdf","size":156189,"sha256":"36c97bc7878173db99edfc7bde9798986fbd57431d4096aeb5ba5b42adce958b","access":"public","embargo_until":null,"license":null,"url":"https:\/\/repo.xbbh.net\/items\/2532\/files\/7691\/3._LEMBAR_PERNYATAAN.pdf"},{"name":"5._ABSTRAK.pdf","section":"abstract","mime_type":"application\/pdf","size":575952,"sha256":"1da0eac39c1448ba9c0a734293a372514380ec017dde1e500bba194242587eda","access":"public","embargo_until":null,"license":null,"url":"https:\/\/repo.xbbh.net\/items\/2532\/files\/7692\/5._ABSTRAK.pdf"},{"name":"7._BAB_I.pdf","section":"chapter_1","mime_type":"application\/pdf","size":536250,"sha256":"3cd3dc40f4544ad043838e3db3894a1e63c1d54271a9b409d63f7ac0309d7b72","access":"public","embargo_until":null,"license":null,"url":"https:\/\/repo.xbbh.net\/items\/2532\/files\/7693\/7._BAB_I.pdf"},{"name":"12._DAFTAR_PUSTAKA.pdf","section":"bibliography","mime_type":"application\/pdf","size":565096,"sha256":"fab97381ecb4890f0d321ea0e0bbf437dfea8c33a55863e82d6ab16dd12b4d32","access":"public","embargo_until":null,"license":null,"url":"https:\/\/repo.xbbh.net\/items\/2532\/files\/7694\/12._DAFTAR_PUSTAKA.pdf"}],"published_at":"2023-08-03T03:22:27+00:00","updated_at":"2026-10-31T06:54:56+00:00"}}