PENGARUH PARAMETER PENGELASAN RESISTANCE SPOT WELDING TERHADAP SIFAT FISIK DAN MEKANIK MULTI-LAYER lOGAM TAK SEJENIS BERBEDA KETEBALAN: RESISTANCE SPOT WELDING

Haikal Haikal

doi:10.33019/jm.v7i1.1661

Penulis

Haikal Haikal Akademi Teknologi Warga Surakarta

DOI:

https://doi.org/10.33019/jm.v7i1.1661

Kata Kunci:

Resistance spot welding, Logam tak sejenis, Tegangan listrik, Waktu pengelasan

Abstrak

Penggunaan resistance spot welding untuk menggabungkan logam tiga lapis merupakan pengembangan baru dalam perakitan automotif. Pengaruh parameter pengelasan seperti tegangan listrik dan waktu pengelasan terhadap sifat fisik dan mekanik sambungan las logam tak sejenis antara 316L, SS 400, dan J1 telah diteliti. Gaya penekanan elektroda dalam penelitian ini dibuat seragam. Parameter pengelasan yang digunakan yaitu tegangan 2,02; 2,30; 2,67 V dan waktu pengelasan 3 ; 4; 5; 7,5 s. Hasil penelitian ini menunjukkan bahwa tegangan 2,67 V dan waktu pengelasan 7,5 s menghasilkan kekuatan tarik geser tertinggi yaitu 11,19 kN dengan mode kerusakan berupa pull out. Peningkatan tegangan listrik dan waktu pengelasan menyebabkan diameter nugget sisi antarmuka semakin lebar. HAZ mengalami perluasan akibat meningkatnya waktu pengelasan. Kekerasan tertinggi terdapat pada daerah nugget dikarenakan butiran terbentuk kolumnar.

Unduhan

Data unduhan tidak tersedia.

Referensi

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