Analisa Proses Perpindahan Panas pada Pengecoran Paduan Al-12%Si dengan Metode Elemen Hingga

Firdaus, Muhammad Bahtiyar; Hidayat, Mas Irfan P.; Fellicia, Dian Mughni

doi:10.12962/j23373539.v5i2.17990

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Open molding was chosen in this study. SOLID278 element (brick8node278) was chosen for the thermal simulation in order to obtain transient temperature history and distribution during the casting process (Firdaus et al, 2016;Anwar et al, 2020).…”

Section: Heat Transfer Simulationmentioning

confidence: 99%

EFFECT OF POURING TEMPERATURE AND DEGASSING ON THE CASTING QUALITY OF Al 6061: EXPERIMENTAL AND NUMERICAL STUDY

Rendi

Wibowo

Hidayat

2021

Materials Research Communications

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As one of important components of an airplane, body of airplane is required to have high value of strength to weight ratio. In this study, transient heat transfer of Al 6061 in a sand casting process was investigated both experimentally and numerically. The effects of different pouring temperatures (700, 720 and 740 °C) and presence of thin film and H2 inclusions are considered in the present study. Composition, XRD, metallography and tensile strength tests have been carried out to examine the casting product quality, before and after degassing, a process to remove the inclusions from the cast. Correspondingly, heat transfer simulations were carried out by taking into account the variation of pouring temperatures and the presence of inclusions. From the present experimental and numerical study, it was found that: (i) Degassing enhanced significantly the strength of Al 6061 product. The highest tensile strength value has been found to be 64.30 MPa, related to the pouring temperature of 700 °C with degassing, while the lowest one is 35.85 MPa associated with the pouring temperature of 700 °C without degassing. (ii) Pouring temperature did not affect significantly to the strength of Al 6061 product, especially when degassing process was carried out, and (iii) The presence of thin film and hydrogen gas inclusions affected the cooling rate of the metal slab. Overall, the cooling of the metal slab with thin film inclusion became slower, while the cooling of the metal slab with hydrogen gas inclusions became faster.

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Section: Heat Transfer Simulationmentioning

confidence: 99%

EFFECT OF POURING TEMPERATURE AND DEGASSING ON THE CASTING QUALITY OF Al 6061: EXPERIMENTAL AND NUMERICAL STUDY

Rendi

Wibowo

Hidayat

2021

Materials Research Communications

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“…The conclusion from this study states that cooling rate can be plotted in ANSYS. This research aims to analyze the effect of adding a copper element to mechanical properties value and electrical conductivity value of aluminum alloy through sand casting method. Such a method was chosen due toa simulation conducted by Bahtiyar, 2016 [6] which mentioned that thermal stress of metal mold was higher compared to the sand mold. Higher thermal stress is linear with higher shrinkage.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Experimental Study of Al-Cu Alloy Sand Casting for Circuit Breaker

Fellicia

Hidayat

Rochiem

et al. 2019

Int. J. Adv. Sci. Eng. Inf. Technol.

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Aluminum is a light metal with good electrical conductivity and widely applied for electrical devices. One of its application is the circuit breaker component. The 2xxx series of aluminum alloy has a copper alloying element which increases its mechanical properties and improves quality of electrical conductivity. This research aims to obtain the best gating system design of the circuit breaker mold by ANSYS modeling. This research also is subject to measure the influence of Cu alloying to the rate of electrical conductivity, strength, and hardness in aluminum alloys for circuit breaker application by experimental working. Aluminum is alloyed with variations of 1; 2; 3; 4; and 5% copper addition. Modeling of thermal analysis and structural analysis was calculated by ANSYS Mechanical APDL with a finite element method to find the best design for the sand casting experiments. Chemical composition, metallography, brinnel hardness, tensile, XRD, and electrical conductivity tests were conducted in this study. The highest strength is 59.50 MPa was acquired on Al-3% Cu while the lowest strength is 37.43 MPa was on Al-1% Cu alloy. The peak of hardness 48.70 HBN could be drawn at Al-4% Cu. In the other hand, the dip of it was Al 1% Cu of 25.5 HBN. The last variable, conductivity, has the highest amount as of Al-5C, alloys with a value of 12.88 S / M, which is found on Al-1Cu with a value of 9.30 S/m.

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Analisa Proses Perpindahan Panas pada Pengecoran Paduan Al-12%Si dengan Metode Elemen Hingga

Cited by 2 publications

References 3 publications

EFFECT OF POURING TEMPERATURE AND DEGASSING ON THE CASTING QUALITY OF Al 6061: EXPERIMENTAL AND NUMERICAL STUDY

EFFECT OF POURING TEMPERATURE AND DEGASSING ON THE CASTING QUALITY OF Al 6061: EXPERIMENTAL AND NUMERICAL STUDY

Modeling and Experimental Study of Al-Cu Alloy Sand Casting for Circuit Breaker

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