?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+HEAT+TREATMENTDENGAN+VARIASI+MEDIA%0D%0AQUENCHING+AIR+DAN+OLI+TERHADAP+STRUKTUR+MIKRO+DAN+NILAI%0D%0AKEKERASAN+BAJA+PEGAS+DAUN+AISI+6135&rft.creator=Indah+Retno+Astrini%2C+1217041020&rft.subject=+&rft.subject=QC+Physics&rft.description=Penelitian+ini+dilakukan+untuk+mengetahui+pengaruh+heat+treatment+dengan+variasi%0D%0Amedia+quenching+air+dan+oli+terhadap+struktur+mikro+dan+nilai+kekerasan+baja+pegas%0D%0Adaun+AISI+6135.+Sampel+yang+digunakan+yaitu+baja+pegas+daun+yang+kemudian%0D%0Adilakukan+quench-temper.+Analisis+yang+dilakukan+meliputi+uji+komposisi+kimia%2C%0D%0Akekerasan%2C+dan+struktur+mikro.+Proses+heat+treatment+diawali+dengan+pemanasan+awal%0D%0Apada+suhu+600+C+dengan+waktu+tahan+30+menit%2C+dilanjutkan+pemanasan+pada+suhu%0D%0Aaustenisasi+(hardening)+yaitu+800+C+dengan+waktu+tahan+selama+60+menit+setelah+itu%0D%0Adilakukan+quenching+menggunakan+100%25+air+dan+campuran+50%25+air+%3A+50%25+oli.+Proses%0D%0Aakhir%2C+yaitu+temperingpada+temperatur+600+C+selama+40+menit.+Hasil+uji+komposisi%0D%0Akimia+menunjukkan+bahwa+baja+pegas+daun+yang+digunakan+tergolong+chromvanadium%0D%0Asteel.+Pengujian+kekerasan+dilakukan+menggunakan+metode%0D%0ARockwelldengan+hasil+kekerasan+untuk+raw+material+yaitu+42%2C18+HRc%2C+untuk+sampel%0D%0Ahasil+quench-temper+100%25+air+36%2C6+HRc+dan+sampel+hasilquench-temper+campuran%0D%0Aair+dan+oli+34%2C99+HRc.+Nilai+kekerasan+yang+menurun+dibuktikan+dengan+struktur%0D%0Amikro+quench-temper+yang+terbentuk+fasa+martensit+temper+dan+ferit%2C+sedangkan+fasa%0D%0Aperlit+dan+ferit+terdapat+pada+raw+material.%0D%0AKata+kunci%3A+Heat+treatment%2C+quenching%2C+struktur+mikro%2C+nilai+kekerasan%2C+baja+pegas%0D%0Adaun.%0D%0A%0D%0AEFFECT+OFHEAT+TREATMENTON+VARIATIONS+MEDIA%0D%0AQUENCHINGWATERAND+OIL+ON%0D%0AMICROSTRUCTURESANDHARDNESSOF+LEAF+SPRING+STEEL+AISI+6135%0D%0ABy%0D%0AIndah+Retno+Astrini%0D%0AThis+research+was+conducted+to+determine+the+effect+of+heat+treatment+with+a+variety%0D%0Aof+water+and+oil+quenching+media+to+microstructure+and+hardness+values+of+leaf+spring%0D%0Asteel+AISI+6135.+The+sample+used+is+steel+leaf+springs+are+then+carried+quenchtempered.%0D%0AAnalysis+was+conducted+on+the+chemical+compositio%2C+hardness%2C+and%0D%0Amicrostructure.+Heat+treatment+begins+with+preheating+at+600%C2%B0+C+with+a+holding+time%0D%0Aof+30+minutes%2C+followed+by+heating+at+a+temperature+austenisasi+(hardening)+is+800%C2%B0+C%0D%0Awitha+holding+time+of+60+after+it+is+done+quenching+using+100%25+water+and+mixture+of%0D%0A50%25+water+%3A+50%25+oil.+Finally+process+that+is+temperingusing+a+temperature+of+600%C2%B0+C%0D%0Afor+40+minutes.+The+test+results+show+that+the+chemical+composition+of+the+steel+leaf%0D%0Asprings+that+used+relatively+chrom-vanadium+steel.+Tests+carried+out+using+the+method%0D%0Aof+Rockwell+hardness%2C+with+a+hardness+results+for+the+raw+material+that+is+42%2C18HRc%2C%0D%0Afor+a+sample+of+the+quench-tempered+100%25+water+36%2C6HRc+and+quench-tempered+mix%0D%0Aof+water+and+oil+34%2C99HRc.+Hardness+value+decreased+evidenced+by+the+quenchtempered%0D%0Amicrostructure+formed+tempered+martensite+phase+and+ferrite%2C+pearlite+and%0D%0Aferrite+phase+while+contained+in+the+raw+material.%0D%0AKeywords%3ALeaf+spring%2C+hardness%2C+heat+treatment%2C+quenching%2C+microstructures.&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2016-06-20&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22829%2F1%2FABSTRAK%2520%2528ABSTRACT%2529.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22829%2F3%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22829%2F2%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++Indah+Retno+Astrini%2C+1217041020++(2016)+PENGARUH+HEAT+TREATMENTDENGAN+VARIASI+MEDIA+QUENCHING+AIR+DAN+OLI+TERHADAP+STRUKTUR+MIKRO+DAN+NILAI+KEKERASAN+BAJA+PEGAS+DAUN+AISI+6135.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F22829%2F