Economic Modeling of Profit Distribution with Cost and Quantity & Technology on Wheel Hub Pressing in Dongyue Maker
Run Xu, JiaguangLiu
Sch J Eng Tech | 58-63
DOI : 10.36347/sjet.2021.v09i06.001
With the increasing labor quantity the profit may increase after a certain quantity, which means the deficit will be substituted by the benefit in forge process of hub. So that through turnover to be established the benefit may be formed after turn point. Detail value is needed to calculate the field according to the curves between them. The TC and AC is the first factor to consider and then AVC and AFC which is second factor. The profit point has one piece when labor is constant. That means that in the scope of this field the profit may be available. When the labor and capital inclines the total cost will incline. Average cost is no proportion to total cost. With increasing stress and diameter the force may increase.
The Modeling of Power and Parameters on Wheel Hub for Motor in Forging Process
Sch J Eng Tech | 64-68
DOI : 10.36347/sjet.2021.v09i06.002
With the increasing diameter and stress the power applied to motor wheel may increase in proportional, which means the big power will be formed in forge process of motor. Furthermore with increasing height and rotation it may increase as well. So that through power equation to be established the properties may be designed and checked before made. Detail value is needed to calculate the hub power according to the curves between them. The stress of hub is the first factor to consider and then its diameter and height which is second factor. The bigger power is 12KW and 35KW when rotation is 10r/m and height is from 350mm to 150mm respectively. That means that in the scope of this field the power may be bigger enough. When continuing to incline height the power will no change. The time increases as diameter and height inclines. The time will incline as the rotation declines.
Original Research Article
July 23, 2021
The Effect of the Use of Local Papua Coard Aggregate on AC-WC Laston Stability Value
Sch J Eng Tech | 69-76
DOI : 10.36347/sjet.2021.v09i06.003
Coarse aggregates derived from rock are commonly used as road pavement materials that meet the applicable specifications. This study uses rock aggregates originating from the polymeric area of Jayapura City, and this type is widely found in various areas of northern Papua. The study was conducted to determine the effect of local Papuan coral aggregates on the AC-WC Laston value. According to the 2018 General Specifications of Highways; namely, the added filler material must be dry and free from clumps and when tested by sieving according to SNI ASTM C136: 2012. The test results obtained characteristic values on the use of coral as follows: The highest density value at 4.5% asphalt content and the lowest 5.5% and 6.5%. The VMA value obtained is unstable, but all asphalt content meets Bina Marga Specifications 2010 Revision III, namely with a minimum VMA value of 15%, the highest VIM value of 3-5%, VFA values tend to increase but experience a decrease in asphalt content of 5.5% and 6.5%. The results of the Marshall test on coral material in the AC-WC layer are the high strength value 5495.89 kg, density: 1.74 gr/cm3, VMA: 24.42%, VIM: 15.83 %, VFA: 0.01%, flow: 10.00 mm, and MQ of 348.03 mm/kg. The value of Optimum Asphalt Content (KAO) used as AC-WC layer is 5.5%.