Perbandingan Produktivitas Blasting Menggunakan Copper Slag Baru, 1&2 pada Permukaan Kapal dengan Preparation Spot Sweep Menggunakan Metode ANOVA

Kerans, Sisilia S. Lelo (2026) Perbandingan Produktivitas Blasting Menggunakan Copper Slag Baru, 1&2 pada Permukaan Kapal dengan Preparation Spot Sweep Menggunakan Metode ANOVA. Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.

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Abstract

Dry abrasive blasting merupakan proses penting dalam persiapan permukaan baja pada industri galangan kapal. Copper slag banyak digunakan sebagai media abrasif, namun praktik penggunaan sekali pakai menyebabkan pemborosan material dan peningkatan limbah. Penelitian ini bertujuan membandingkan produktivitas blasting menggunakan copper slag baru, recycle pertama, dan recycle kedua dengan meninjau waktu pengerjaan, luas area pembersihan, serta kekasaran permukaan. Data dikumpulkan melalui pengukuran langsung di PT. XYZ dengan kondisi kerja terkontrol. Analisis statistik menggunakan One-Way ANOVA digunakan untuk menguji perbedaan signifikan antar perlakuan. Hasil penelitian menunjukkan bahwa copper slag baru menghasilkan kekasaran tertinggi, tetapi membutuhkan waktu lebih lama dan area kerja lebih kecil. Copper slag recycle pertama memberikan keseimbangan optimal antara kualitas permukaan dan efisiensi kerja, sedangkan recycle kedua paling cepat dan menghasilkan area paling luas tetapi dengan kekasaran terendah. Uji ANOVA menunjukkan perbedaan signifikan pada seluruh parameter. Dengan demikian, copper slag recycle pertama direkomendasikan sebagai media abrasif yang paling efisien dan masih memenuhi standar kualitas.

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