Karakterisasi Pengecoran Poros Berulir (Screw) Dengan Variabel Paduan Unsur Titanium Boron Dan Magnesium

Wisnujati, Andika; Yusuf, Mirza; Hudiatma, Azhar

doi:10.21776/ub.jrm.2022.013.01.4

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Penggunaan aluminium sebagai bahan baku manufaktur industri logam dan kendaraan menggeser dominasi dari tembaga, penggunaan aluminium hanya kalah dari besi. Hal tersebut terjadi [1,2] . Aluminium adalah logam melimpah yang dalam pengaplikasiannya cukup luas di masyarakat dunia bahkan digunakan nyaris di semua aspek kehidupan [3] .…”

Section: Pendahuluanunclassified

Karakterisasi Lapisan Oksida Hasil Anodizing Pada Aluminium Dengan Variabel Waktu Pencelupan

Wisnujati,

Yudhanto

2023

JRM

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Anodizing is an electrolytic coating process that converts aluminum into aluminum oxide. The anodizing process is widely used in the manufacturing industry, especially in automotive components. Its utilization has benefits such as resistance to scratches, ease of maintenance, and added decorative value. The purpose of this study was to determine the effect of time variations on the hardness and thickness of the oxide layer in the 6xxx series of aluminum anodizing processes. The variation of time used in the immersion process is 20, 30, and 40 minutes, with an electric current of 2 amps and a voltage of 24 volts. After that, the dyeing and sealing process is carried out. The tests carried out included testing of hardness (Vickers) and the thickness of the oxide layer (coating thickness gauge). The results of the highest hardness test of 112.9 VHN were obtained at a time variation of 40 minutes, with an average layer thickness of 5.07 m. It can be said that the amount of time spent in the anodizing process has an effect on how hard the oxide layer gets and how thick it is on the 6xxx series of aluminum metal.

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Section: Pendahuluanunclassified

Karakterisasi Lapisan Oksida Hasil Anodizing Pada Aluminium Dengan Variabel Waktu Pencelupan

Wisnujati,

Yudhanto

2023

JRM

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“…Material selection of the design The frame of the adjustable chair on the handcycle was constructed from readily available, safe, dependable, and easily welded material [23,24]. The material used to manufacture the adjustable chair on the handcycle is iron plate, which is an elbowshaped iron plate with an angle of 90 o .…”

Section: 2mentioning

confidence: 99%

Untitled

2022

Jurnal Polimesin

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Handcycle is one of bicycle that used by someone with physical limitations, and this bicycle is operated by hand. Some people who have physical limitations will not be able to ride a bicycle in general, so a handcycle is made using three wheels to be able to maintain the balance of the rider's body. This handcycle is a solution for people with disabilities to be able to go somewhere and also exercise. In this study, an adjustable chair design was made that is suitable for handcycles and has an adjustable function, namely making the handcycle seat move forward or backward to make it easier for a rider to adjust the position of the legs in moving the handcycle. The material used to manufacture the adjustable chair on the handcycle is iron plate, which is an elbow-shaped iron plate with an angle of 90 o . The length is 300 mm, width 200 mm and thickness 50 mm. After the design is made, then a stress analysis test with Autodesk Inventor 2016 is carried out on the adjustable chair on the handcycle by analyzing the strength of the chair and also the appropriate body posture when supporting the weight of a person with a disability. The final result of the adjustable chair applied to the handcycle was measured by stress analysis using Autodesk Inventor 2016 software. The material strength (Von Misess) for male users who weighs 70 kg has a maximum value of 1.767 MPa with a maximum displacement of 0.0059. As for female users weighing 60 kg, the maximum value is 1.514 MPa with a maximum displacement of 0.050.

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“…Sistem seperti ini dikenal sebagai mesin reciprocating. Piston memiliki ketahanan terhadap tekanan, suhu , dan putaran yang tinggi (Wisnujati & Shomad, 2019;Wisnujati et al, 2022)…”

Section: Metode Penelitianunclassified

Karakterisasi Pengecoran Paduan Al-Si-TiB dengan Variabel Suhu Die Casting

Shomad

Wisnujati

Mudjijana³

2022

Rekayasa

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This study describes the microstructure phase and the hardness value produced in metal casting with variations in metal mold temperature with the addition of Ti-B elements. gravity casting, a technique that relies solely on gravity, is used for casting metals. This objective of this study to determine the mechanical properties characterization of specimens using die casting molds by varying the mold temperature between 250°C, 350°C, 450°C and the addition of 0.05% Ti-B alloying elements. In addition, this research can determine the right temperature for metal casting by gravity casting method. The material used in this research is recycle piston Al-Si (series 4xxx). The results of hardness testing at a temperature of 250°C have produced 123.9 HVN. The microstructure of the Al-Si-TiB alloy material has dense grain boundaries. This is because the casting with the addition of the TiB element functions as a grain refiner and reduces porosity in the microstructure. So, the smaller the porosity, the stronger the hardness of the specimen or material. This is because at low mold temperatures, the metal casting process will freeze faster, resulting in higher hardness. In addition, the increasing temperature of the die casting mold has a tendency to change the eutectic structure of silicon to primary silicon.

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Karakterisasi Pengecoran Poros Berulir (Screw) Dengan Variabel Paduan Unsur Titanium Boron Dan Magnesium

Cited by 3 publications

References 6 publications

Karakterisasi Lapisan Oksida Hasil Anodizing Pada Aluminium Dengan Variabel Waktu Pencelupan

Karakterisasi Lapisan Oksida Hasil Anodizing Pada Aluminium Dengan Variabel Waktu Pencelupan

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Karakterisasi Pengecoran Paduan Al-Si-TiB dengan Variabel Suhu Die Casting

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