?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+PENGGUNAAN+GAS+CO2+DAN+TANPA+GAS+PADA%0D%0A%0D%0APENGELASAN+GMAW+BAJA+AISI+1045&rft.creator=Muhammad+%2C+Decky+Apriantomi&rft.subject=600+Teknologi+(ilmu+terapan)&rft.subject=620+Ilmu+teknik+dan+ilmu+yang+berkaitan&rft.description=Pengelasan+Gas+Metal+Arc+Welding+(GMAW)+merupakan+penggabungan+beberapa%0D%0Apenyusun+logam+menjadi+satu+melalui+proses+pencairan+logam+gas+pelindung+dan%0D%0Atanpa+gas+dengan+kawat+pengisi+sebagai+material+penyambung+atau+kawat+las+tanpa%0D%0Alapisan.+Penggunaan+gas+pelindung+digunakan+untuk+melindungi+busur+pengelasan%0D%0Adan+daerah+sekitarnya+dari+pencemaran+oleh+oksigen+dan+nitrogen.+Sangat+penting%0D%0Auntuk+mengetahui+sifat+las+dikarenakan+akan+menentukan+karakteristik+mekanik%0D%0Adan+struktur+yang+akan+di+las.+Penelitian+ini+bertujuan+untuk+menganalisis+hasil%0D%0Akarakteristik+sambungan+las+dari+pengelasan+GMAW+serta+membandingkan+sifat%0D%0Amekanik+dan+kekuatan+sambungan+las+yang+dihasilkan+pengaruh+gas+pelindung%0D%0ACO2+dan+tanpa+gas+pada+Baja+AISI+1045.+Penelitian+ini+menggunakan+variasi+gas%0D%0Apelindung+CO2+dan+tanpa+gas.+Pengujian+kualitas+dilakukan+dengan+uji+visual%2C+uji%0D%0Atarik+dan+uji+impact+serta+bahan+yang+digunakan+yaitu+Baja+AISI+1045.%0D%0ABerdasarkan+data+dari+hasil+pengujian%2C+menunjukkan+perbedaan+yang+signifikan%0D%0Ayaitu+hasil+las+dengan+gas+pelindung+CO2+tampak+lebih+mengkilap%2C+sedangkan+hasil%0D%0Alas+tanpa+gas+pelindung+terlihat+lebih+gelap.+Hasil+dari+kekuatan+tarik%0D%0Amenggunakan+gas+pelindung+CO2+yaitu+sebesar+688%2C8+Mpa+dan+tanpa+gas%0D%0Apelindung+yaitu+sebesar+555%2C7+Mpa.+Dan+hasil+pengujian+uji+impact+yang+dilakukan%0D%0Adengan+perbandingan+nilai+ketangguhan+dengan+menggunakan+gas+pelindung+CO2%0D%0Aadalah+13%2C3+joule+dengan+nilai+ketangguhan+sebesar+0%2C1916+J%2Fmm2%0D%0A%0D%0A.+Sedangkan%0D%0Anilai+yang+diperoleh+dari+hasil+pengelasan+tanpa+gas+pelindung+adalah+16%2C33+joule%0D%0Adengan+nilai+ketangguhan+sebesar+0.2041+J%2Fmm2%0D%0A.%0D%0A%0D%0AKata+kunci%3A+pengelasan+GMAW%2C+gas+pelindung%2C+gas+CO2%2C+pengelasan+tanpa+gas%2C%0D%0Abaja+AISI+1045%2C+uji+visual%2C+uji+tarik%2C+uji+impact.%0D%0AGas+Metal+Arc+Welding+(GMAW)+is+a+process+of+joining+metal+components+through%0D%0Athe+melting+of+metal+using+shielding+gas+or+without+gas%2C+with+filler+wire+as+the%0D%0Ajoining+material+or+uncoated+welding+wire.+Shielding+gas+is+used+to+protect+the%0D%0Awelding+arc+and+surrounding+area+from+contamination+by+oxygen+and+nitrogen.%0D%0AUnderstanding+weld+properties+is+crucial+as+it+determines+the+mechanical%0D%0Acharacteristics+and+structure+of+the+welded+material.+This+research+aims+to+analyze%0D%0Athe+characteristics+of+welded+joints+from+GMAW+and+compare+the+mechanical%0D%0Aproperties+and+strength+of+welded+joints+produced+with+CO2+shielding+gas+and%0D%0Awithout+gas+on+AISI+1045+Steel.+This+study+uses+variations+of+CO2+shielding+gas+and%0D%0Agas-less+welding.+Quality+testing+was+conducted+through+visual+inspection%2C+tensile%0D%0Atesting%2C+and+impact+testing+on+AISI+1045+Steel.+Based+on+the+test+results%2C+significant%0D%0Adifferences+were+observed%3A+welds+with+CO2+shielding+gas+appeared+more-glossy%2C%0D%0Awhile+gas-less+welds+appeared+darker.+The+tensile+strength+results+using+CO2%0D%0Ashielding+gas+were+688.8+MPa%2C+and+without+shielding+gas+were+555.7+MPa.+Impact%0D%0Atest+results+showed+a+toughness+value+of+13.3+joules+with+a+specific+toughness+of%0D%0A0.1916+J%2Fmm2+for+welds+with+CO2+shielding+gas.+In+contrast%2C+gas-less+welding%0D%0Aresulted+in+16.33+joules+with+a+specific+toughness+of+0.2041+J%2Fmm2.%0D%0A%0D%0AKeywords%3A+GMAW%2C+shielding+gas%2C+CO2+gas%2C+gas-less+welding%2C+AISI+1045+steel%2C%0D%0Avisual+inspection%2C+tensile+test%2C+impact+test.&rft.publisher=FAKULTAS+TEKNIK&rft.date=2024-08-12&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82547%2F1%2FABSTRAK_M.Decky%2520Apriantomi_1815021028%2520-%2520mhmd%2520decky.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82547%2F2%2FFULL%2520SKRIPSI_M.DECKY%2520APRIANTOMI_1815021028%2520-%2520mhmd%2520decky.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F82547%2F3%2FTANPA%2520PEMBAHASAN_M.DECKY%2520APRIANTOMI_1815021028%2520-%2520mhmd%2520decky.pdf&rft.identifier=++Muhammad+%2C+Decky+Apriantomi++(2024)+PENGARUH+PENGGUNAAN+GAS+CO2+DAN+TANPA+GAS+PADA+PENGELASAN+GMAW+BAJA+AISI+1045.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F82547%2F