?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+VARIASI+MEDIA+PENDINGIN+PADA+PROSES%0D%0AQUENCHING+TERHADAP+KEKERASAN+DAN+STRUKTUR%0D%0AMIKRO+BAJA+ST41+YANG+TELAH+MENGALAMI%0D%0A%0D%0ACARBURIZING&rft.creator=Dony+Pambudi%2C+1215021033&rft.subject=620+Ilmu+teknik+dan+ilmu+yang+berkaitan&rft.description=Carburizing+adalah+proses+perlakuan+panas+yang+digunakan+untuk+menambahkan+unsur%0D%0Akarbon+ke+dalam+suatu+material+dengan+tujuan+meningkatkan+kekerasan+permukaan%0D%0Amaterial+tersebut.+Tujuan+dari+penelitian+ini+adalah+untuk+mengetahui+pengaruh+dari%0D%0Avariasi+media+pendingin+terhadap+nilai+kekerasan+dan+struktur+mikro+baja+ST+41.+Pada%0D%0Apenelitian+ini+menggunakan+arang+tempurung+kelapa+sebagai+karbon+aktif+dan+cangkang%0D%0Atelur+sebagai+katalisator.+Ukuran+serbuk+arang+dan+katalis+yang+digunakan+sebesar+600%0D%0Am+dengan+komposisi+85%25+%3A+15%25.+Media+pendingin+yang+digunakan+adalah+air%2C+oli+dan%0D%0Aair+garam+dengan+volume+10+liter+dengan+menggunakan+proses+pendinginan+cepat%0D%0A(quenching).+Carburizing+dilakukan+pada+suhu+850+selama+60+menit.+Hasil+yang%0D%0Adidapatkan%2C+media+pendingin+air+garam+memiliki+nilai+kekerasan+terbesar+diikuti+air+dan%0D%0Aoli+dengan+nilai+kekerasan+sebesar+462.7+VHN%2C+359.24+VHN+dan+332.58+VHN.+Media%0D%0Apendingin+mempengaruhi+struktur+mikro+baja+ST+41+dimana+quenching+dengan+air%0D%0Agaram+membentuk+martensit+terbanyak+diikuti+air+dan+oli.+Banyaknya+martensit%0D%0Amenunjukkan+besarnya+nilai+kekerasan+pada+material+tersebut.%0D%0A%0D%0AKata+kunci%3A+pack+carburizing%2C+quenching%2C+ST+41%2C+kekerasan%2C+struktur+mikro.%0D%0ACarburizing+is+a+heat+treatment+process+for+adding+carbon+elements+to+a+material%0D%0Awith+the+aim+of+increasing+the+surface+hardness+of+the+material.+The+purpose+of+this%0D%0Astudy+was+to+determine+the+effect+of+the+variation+of+the+cooling+media+on+the%0D%0Avalue+of+the+hardness+and+microstructure+of+ST+41+steel.+In+this+study+using%0D%0Acoconut+shell+charcoal+as+activated+carbon+and+eggshell+as+a+catalyst.+The+size+of%0D%0Athe+charcoal+powder+and+catalyst+used+were+600+%CE%BCm+with+a+composition+of+85%25%3A%0D%0A15%25.+Cooling+medium+used+is+water%2C+oil+and+salt+water+with+a+volume+of+10+liters%0D%0Ausing+a+fast+cooling+process+(quenching).+Carburizing+is+done+at+850%C2%B0C+for+60%0D%0Aminutes.+Salt+water+cooling+media+has+the+greatest+hardness+value+followed+by%0D%0Awater+and+oil+with+a+hardness+value+of+462.7+VHN%2C+359.24+VHN+and+332.58+VHN.%0D%0AThe+cooling+medium+affects+the+ST+41+microstructure+of+steel+where+quenching%0D%0Awith+salt+water+forms+the+most+martensite+followed+by+water+and+oil.+The+number%0D%0Aof+martensites+shows+the+value+of+the+hardness+of+the+material.%0D%0AKeywords%3A+pack+carburizing%2C+quenching%2C+ST+41%2C+hardness%2C+microstructure&rft.publisher=FAKULTAS+TEKNIK&rft.date=2019&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57213%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57213%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F57213%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++Dony+Pambudi%2C+1215021033++(2019)+PENGARUH+VARIASI+MEDIA+PENDINGIN+PADA+PROSES+QUENCHING+TERHADAP+KEKERASAN+DAN+STRUKTUR+MIKRO+BAJA+ST41+YANG+TELAH+MENGALAMI+CARBURIZING.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F57213%2F