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All Journal Rekayasa Mesin Jurnal Teknologi Terapan Prosiding Seminar Nasional Teknologi Industri Berkelanjutan
Widodo Widodo
Politeknik Negeri Batam
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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PENGARUH VARIASI METERING STROKE TERHADAP CACAT PRODUK CETAKAN INJEKSI PLASTIK Rahman Hakim; Amar Makruf; Ahmad Nurasa; Widodo Widodo; Irvan Wahyudi
Jurnal Teknologi Terapan Vol 6, No 2 (2020): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v6i2.262

Abstract

The research aims to analyze the effect of metering stroke on product quality. Metering strokes relate to product weight and mold capacity. The material used is Polyamide (Nylon) 66, using an ENGEL 50ton capacity Injection Molding machine.  The research method used is an experimental method before mass pre-production with stroke metering variation as a production parameter. A normality test was used to investigate the experimental data. Shapiro-Wilk's formula on Minitab® software was used to process the data. Product defects caused by an improper metering stroke often in the injection process are short mold and flashing prints. The results show that short mold production defects occur when the metering stroke is 60 mm due to the material does not fill the full cavity. Furthermore, flashing occurs when the metering stroke is 70 mm due to out of cavity capacity. Therefore, the appropriate parameter is a 65 mm metering stroke with good quality part results.
Keakurasian Dimensi Concentric Reducer 4x2 STD Hasil Proses Mesin Bevel Widodo widodo; Benny Haddli Irawan; Jecky Juwanta
Prosiding SENASTITAN: Seminar Nasional Teknologi Industri Berkelanjutan Prosiding SENASTITAN Vol. 02 2022
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.951 KB)

Abstract

Perkembangan dunia manufacturing saat ini begitu pesat dan semakin bertambah sekaligus memiliki peranan penting di dalam dunia industri. Perusahaan-perusahaan industri yang bergerak dalam dunia manufaktur semakin bertambah, salah satunya perusahaan manufacturing yang bergerak di bidang carbon steel pipe fitting, yang memproduksi elbow, reducer, tee, dan cap. Produk pipe fitting tersebut digunakan untuk menyambung antara pipa satu dengan pipa yang lain sesuai dengan kebutuhan yang digunakan. Keakuratan hasil proses machining harus disesuaikan dengan spesifikasi yang sudah ditentukan ASME B16.9-2012. Dikarenakan setiap item concentric reducer 4x2 STD memiliki dimensi yang berbeda beda dari setiap pcs. Maka dari itu dimensi pada material harus diukur sebelum melakukan proses machining. Alat yang digunakan untuk proses pengukan yaitu digital vernier caliper dengan kecermatan 1/128 inchi, mistar dengan kecermatan 1/32 inchi, dan bevel protactor. Metode penelitian yang digunakan adalah dengan cara mengecek dan mengukur raw material dan finish material pada dimensi concentric reducer 4x2 STD. Hasil yang didapatkan dari penelitian ini adalah hasil ukuran concentric reducer 4x2 STD sesuai dengan standar yang sudah ditentukan ASME B16.9-2012.
ALAT BANTU UNTUK PEMBUATAN ULIR LUAR DAN ULIR DALAM Widodo Widodo
Jurnal Rekayasa Mesin Vol. 13 No. 3 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i3.1127

Abstract

The machining process is the process in which different products are made especially from metal and it is often used in both small and large industries. One of the products of the machining process is threaded products and there is an ongoing increase in the use of these products because of their ease of maintenance and assembly to a complete product. The manufacturing of these products can be done by several methods e.g., by using machine tools or hand taps. In line with that, to manufacture these products in large volumes and to achieve high production speeds, special supporting tools are required. The design of the supporting tools is evolving continuously because a single tool cannot fulfill the entire manufacturing process. To design and manufacture supporting tools, apart from the design, the safety and comfort aspects of work are also taken into account. The methodology for the manufacturing of this product is to use the design for manufacturing and assembly (DFMA) method, which starts with reviewing and identifying needs, designing and making these tools that are adapted to the standard tap/one dimension specifications and the type of material used is cast carbon steel. Based on the study of von misses for 32 N, 64 N, and 94 N loads, the results were 1.807 e+05, 3.614e+05 N/m2, 5.646e+03 N/m2, and this value is still below the stress value. The yield is 2.48168e+008 N/m2, therefore the type of material used is very safe for the manufacture of this product.
Co-Authors Ahmad Nurasa Amar Makruf Benny Haddli Irawan Irvan Wahyudi Jecky Juwanta Rahman Hakim