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PENGARUH WAKTU PENCAMPURAN TERHADAP KUALITAS RUBBER FKM COMPOUND F515 DI MESIN KNEADER 20L Paridawati -; Deni Priatna Saputra; Fatimah Dian Ekawati
Jurnal Ilmiah Teknik Mesin Vol 7 No 1 (2019): JURNAL ILMIAH TEKNIK MESIN
Publisher : Universitas Islam 45 Bekasi, Fakultas Teknik, Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/jitm.v7i1.1901

Abstract

Rubber FKM Compound F515 merupakan type rubber yang terbaik dalam ketahanan terhadap panas (heat resistance) dan ketahanan terhadap minyak (oil resistance). tetapi rubbber sensitif terhadap temperatur pada prosesnya serta mahal dalam biaya pembuatannya. Pada penelitian ini akan melakukan teknik pengujian serta menguji karakteristik sifat rubber FKM dari tingkat kelenturan sampai tingkat kematangan compound dengan merubah waktu pencampuran. Pada waktu pencampuran 7 menit dengan temperatur 123ºC, compound tidak mengalami scorching dengan nilai modulus 4,94 N/mm², tensile strengh 18,97 N/mm², elongation at break 309,34%, moment low 6,48 (kgf/cm) dan moment high 47,14 (kgf/cm).
PENGARUH POLARITAS PADA KEKERASAN DAN STRUKTUR MIKRO LAS SMAW MATERIAL ST 40 ELEKTRODA E 6013 Fande Febrian N. F; Paridawati -; Supriyanto Wibowo
Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2018): JURNAL ILMIAH TEKNIK MESIN
Publisher : Universitas Islam 45 Bekasi, Fakultas Teknik, Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/jitm.v6i2.1928

Abstract

The welding process on the steel causes mechanical properties such as residual stress and poorpenetration, this is because it can be caused by the use of polarity in welding because the theory forpolarity use is adjusted to the materialto be welded, thisresearch aims to know the the effect ofpolarity on ST 40 plate steel material with electrode E 6013. This method uses two methods ofwelding the first straight and second polarity method using reverse polarity method using reversepolarity method using ST 40 steel material (60 mm x 27,5 mm x 10 mm), then using hardnesstesting and microstruktur testing. The result of the research and calculation of known highhardness value 148,67 HR and for microstructure test result there is ferrite and perlite microstructure on raw material, and for welding area and HAZ grain area become more smooth due tohigh heat exposure so that the structure becomes finer, and the structure is formed ferrite andperlite with accicular ferrite lines. This to solve the problem when it is cracked or broken at thewelding area on the component convenyor between axle connecting with drive roll can be causeddue to incorrect use of polarity.
Co-Authors Deni Priatna Saputra Fande Febrian N. F Fatimah Dian Ekawati Supriyanto Wibowo