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Journal articles on the topic 'Vacuum process'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Mitra, J., S. L. Shrivastava, and P. S. Rao. "Process optimisation of vacuum drying of onion slices." Czech Journal of Food Sciences 29, No. 6 (2011): 586–94. http://dx.doi.org/10.17221/162/2010-cjfs.

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Dehydration of untreated and pre-treated onion slices under vacuum was optimised using the response surface methodology. The effects of the drying temperature (50&ndash;70&deg;C), slice thickness (1&ndash;5 mm), and treatment (5% NaCl and 0.2% K<sub>2</sub>S<sub>2</sub>O<sub>5</sub>) were observed on the responses, viz. final moisture content, colour change, flavour content, and rehydration ratio of the dehydrated onion slices. Full factorial design was employed for the analysis. Optimisation of the vacuum drying process was achieved based on the

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2

Hanusová, Jana, Roman Gálik, Štefan Boďo, Petr Kunc, Ivana Knížková, and Lenka Staroňová. "Analysis of Quality Milking Process By Thermographic Method." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 64, no. 4 (2016): 1149–53. http://dx.doi.org/10.11118/actaun201664041149.

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The aim of the study was to determine the milking process quality through the temperature changes on teats. The measurements were conducted to evaluate the effect of partial vacuum 45 kPa and 40 kPa at the mammary gland. The measurements were done on a dairy farm at six Holstein breed dairy cows that were in the second stage of lactation. Temperature changes on teats were measured with thermal camera ThermoProTM TP8S IR during 2 days (morning milking and afternoon milking partial vacuum to 45 kPa, morning and afternoon milking with 40 kPa). The teats surface temperature was monitored before mi

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3

Kula, P., R. Pietrasik, and K. Dybowski. "Vacuum carburizing—process optimization." Journal of Materials Processing Technology 164-165 (May 2005): 876–81. http://dx.doi.org/10.1016/j.jmatprotec.2005.02.145.

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4

Zhang, Shi Wei, Zhuo Wang, and Zhi Jun Zhang. "Study on Evacuating Process of Vacuum Glazing." Applied Mechanics and Materials 71-78 (July 2011): 1204–8. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.1204.

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Vacuum glazing is a very choice in building energy efficiency. Therefore, it is necessary to study on evacuating process of vacuum glazing. Based on fundamental pumping equation of vacuum technique and simplified the existing pumping system for vacuum glazing, a mathematical model, which is described evacuating process of vacuum glazing, is established. An exact mathematical solution is obtained by solving the model. According to the solution, an example from a practical evacuating system is solved and analyzed, and two conclusions are summed up as follows: First, the evacuating time needed fo

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5

Isikawa, Kunihiko, and Hitoshi Iwata. "Advanced vacuum carburizing process : Vacuum High carbon Carburizing and vacuum carbo-nitriding." Proceedings of Conference of Tokai Branch 2002.51 (2002): 273–74. http://dx.doi.org/10.1299/jsmetokai.2002.51.273.

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6

Gumerova, Rozana Z., and Tatyana V. Alushkina. "IMPROVEMENT OF FUEL OIL VACUUM RECTIFICATION PROCESS." Oil and Gas Business, no. 4 (September 14, 2023): 127–40. http://dx.doi.org/10.17122/ogbus-2023-4-127-140.

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Primary oil distillation units form the basis of all oil refineries; the quality and yield of the resulting fuel components, as well as raw materials for secondary and other oil refining processes, depend on their operation. Many Atmospheric Vacuum Tubing (AVT) plants are characterized by low recovery of heavy vacuum gas oil. Insufficient selection of heavy vacuum gas oil production leads to a high yield of vacuum residue - tar, which reduces the volume of oil refining in general.The article analyzes ways to improve the process of vacuum distillation of fuel oil at CDU/AVT primary oil distilla

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Osipov, Eduard Vladislavovich, Daniel Bugembe, Sergey Ivanovich Ponikarov, and Artem Sergeevich Ponikarov. "Comprehensive Modeling of Vacuum Systems Using Process Simulation Software." ChemEngineering 8, no. 2 (2024): 31. http://dx.doi.org/10.3390/chemengineering8020031.

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Traditional vacuum system designs often rely on a 100% reserve, lacking precision for accurate petrochemical computations under vacuum. This study addresses this gap by proposing an innovative modeling methodology through the deconstruction of a typical vacuum-enabled process. Emphasizing non-prescriptive pressure assignment, the approach ensures optimal alignment within the vacuum system. Utilizing process simulation software, each component was systematically evaluated following a proposed algorithm. The methodology was applied to simulate vacuum-driven separation in phenol and acetone produ

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8

MATSUO, Shigeru, Heuy Dong KIM, and Toshiaki SETOGUCHI. "411 Starting Process of a Vacuum Ejector-Diffuser System(2)." Proceedings of the Fluids engineering conference 2007 (2007): _411–1_—_411–4_. http://dx.doi.org/10.1299/jsmefed.2007._411-1_.

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9

MATSUO, Shigeru, Heuy Dong KIM, and Toshiaki SETOGUCHI. "411 Starting Process of a Vacuum Ejector-Diffuser System(1)." Proceedings of the Fluids engineering conference 2007 (2007): _411—a_. http://dx.doi.org/10.1299/jsmefed.2007._411-a_.

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10

Li, Shilin, Yuelong Bai, Zhifeng Zhang, and Long Jiang. "Effects of Vacuum-Stirring Purification Process on Al-6Mg Alloy Melt." Crystals 12, no. 5 (2022): 675. http://dx.doi.org/10.3390/cryst12050675.

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Aiming for hydrogen and oxidation easily produced in the melting process of Al-Mg alloys, three processes, including non-vacuum static melt treatment, non-vacuum rotary-injection purification and vacuum-stirring purification, were used to purify the Al-6Mg alloy melt. The hydrogen content and inclusion content were studied by means of the solid-state hydrogen measurement method, reduced pressure test method, FESEM and EDS. The results show that the purification effect of vacuum-stirring purification is better than that of the non-vacuum static melt treatment and non-vacuum rotary-injection pur

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11

Курочкин, Анатолий, and Anatolii A. Kurochkin. "IMPROVEMENT OF EXTRUDER WORKING PROCESS WITH TERMOVACUAL EFFECT." Bulletin Samara State Agricultural Academy 4, no. 2 (2019): 84–89. http://dx.doi.org/10.12737/article_5cdbc0837a1bc3.84520731.

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The research aim is a theoretical substantiation of the increase in the efficiency of extrudate dehydration due to the supply of air into the vacuum chamber of a modernized extruder with a thermal vacuum working process. On the basis of modern study of the implementation of the thermodynamic process in the interaction of three different air flows in a limited volume of the vacuum chamber of the extruder, one possible way of increasing the efficiency of the finished product dehydration was theoretically justified. In the previously proposed constructive-technological scheme of the extruder, the

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12

Jin, Yan, Jian Jun Hu, and Hong Bin Xu. "Design of Applied Diffusion Pump System for Electron Beam Process." Applied Mechanics and Materials 80-81 (July 2011): 1295–99. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.1295.

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Efficiency of vacuumizing is vital to process time with electron beam. The system principle of vacuum system was designed based on the analysis of system request. The workflow of vacuum system was established and its characteristic was introduced. The controlling theory and circuit of vacuum system was designed while vacuum device was made and its performance was tested. The vacuum system was acquired which was suitable to electronic beam.

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13

Kodirov, Ziyodulla, Husankhon Bobojanov, Sharabidin Dadajonov, and Sabirjon Yusupov. "Optimization process of filling the cocoons with process water in a universal vacuum-steaming device." BIO Web of Conferences 130 (2024): 01004. http://dx.doi.org/10.1051/bioconf/202413001004.

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This article presents the results of a study carried out to optimize the process of filling the inner surface of cocoons with process water in a domestically produced universal vacuum-steaming device. Optimization was carried out according to the definition of a second-order polynomial Regression Multifactor Model (RMM) based on the results of the Rotatable Central Composition Experiment (RCCE). For this purpose, experiments were carried out in several versions on a universal vacuum-steaming device at different water temperatures and steaming durations. Keywords. Cocoons, vacuum, universal, op

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14

Elchyn, Aliiev, Paliy Andriy, Kis Viktor, et al. "Justifying parameters for the automatic servo control system of a rotary plate vacuum pump in the milking machine." Eastern-European Journal of Enterprise Technologies 4, no. 1 (118) (2022): 80–89. https://doi.org/10.15587/1729-4061.2022.262215.

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The scientific task to improve energy efficiency and ensure the process of vacuum regime stabilization in the operation of milking machines has been solved. A mathematical model of the process of functioning of the servo control system of a rotary plate vacuum pump was built; the numerical modeling of its workflow was carried out. This paper reports the results of experimental studies on the influence of the regime parameters of the rotary plate vacuum pump on the efficiency of its operation, as well as the results of experimental research on the servo control system for the rotary plate vacuu

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15

Sari, Rodiah Nurbaya, Diah L. Iah L. Ayudiarti, and G. Gunawan. "THE USE OF VACUUM IMPREGNATION TECHNOLOGY TO IMPROVE SMOKING PROCESS." KnE Life Sciences 2, no. 1 (2015): 45. http://dx.doi.org/10.18502/kls.v1i0.85.

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One of the new technologies contributing to preserve of the original properties of food (as fruit or vegetables or fish) is vacuum impregnation. Vacuum impregnation is one method to preserve foods using vacuum and pressure to fill the porous with osmotic solution. The application of vacuum impregnation had been conducted on smoked processing using liquid smoke for catfish fillet (Pangasius sp) and tilapia fillet (Oreochomis sp). Vacuum impregnation tool was used having 5 kg capacity of fillet product, vacuum pressure at 0.71 kg/cm2 and range of 0-6 kg/cm2 impregnation pressure. The research ha

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16

Fritz, A. "Solvent Vacuum Cleaning and Surface Preparation Before a Vacuum Brazing Process." HTM Journal of Heat Treatment and Materials 80, no. 3 (2025): 160–70. https://doi.org/10.1515/htm-2025-0017.

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Abstract The vacuum brazing process has significant advantages compared to atmospheric brazing processes. Especially the fluxfree joining is a big benefit because removing flux after the brazing process is almost impossible. To reach the highest quality standards of the final product, the cleaning process prior to the brazing process is essential. Using a modified alcohol as a cleaning agent in a cleaning machine running under vacuum allows the solvent to reach cleaning temperatures much higher than its flash point. This causes perfect cleaning results with high surface tension as well as best

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17

Zhao, Zhi-jian, Min Wang, Lei Song, and Yan-ping Bao. "Splashing Simulation of Liquid Steel Drops during the Ruhrstahl Heraeus Vacuum Process." Metals 10, no. 8 (2020): 1070. http://dx.doi.org/10.3390/met10081070.

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In view of the serious splashing problem in the 120 ton Ruhrstahl Heraeus (RH) refining process of a special steel company, a coupling model of volume of fluid + discrete phase model was established to study the influence of the vacuum pressure drop mode on the RH vacuum splashing. Three different pressure drop modes were simulated, and the splash situation was described by the fluctuation of the liquid level and the velocity field in the vacuum chamber in this model. The model predicted that the most serious splashing situation of liquid drops would happen at the early stage of vacuum treatme

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18

Huang, Xiaolong, Tao Sun, Yuezheng Wu, et al. "Study of vacuum arc plasma transport characteristics during the DC interrupting process." Journal of Physics D: Applied Physics 55, no. 16 (2022): 165501. http://dx.doi.org/10.1088/1361-6463/ac49b7.

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Abstract The mechanical DC vacuum circuit breaker based on forced-over-zero technology will inevitably generate vacuum arc during the actual interrupting process. Since the current drop frequency is usually very high, the vacuum arc usually exhibits obvious transient characteristics, and the excessive transient characteristics may even become a key factor limiting the interruption capacity. In order to improve the mechanical DC vacuum circuit breaker arc interrupting capability, this paper establishes a vacuum arc transient magneto-hydrodynamic simulation model in the DC interrupting process a

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19

Raykov, A., A. Burmistrov, S. Salikeev, and A. Isaev. "Working process of Roots vacuum pumps." Vakuum in Forschung und Praxis 33, no. 3 (2021): 29–33. http://dx.doi.org/10.1002/vipr.202100761.

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20

Gibbins, N. J., D. M. Albury, and A. E. Holme. "Vacuum Measurement and Process Control Systems." Measurement and Control 20, no. 8 (1987): 25–31. http://dx.doi.org/10.1177/002029408702000805.

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21

Kutovyi, V. O. "Thermal - vacuum process producing nanodispersed materials." Surface 16(31) (December 30, 2024): 152–63. https://doi.org/10.15407/surface.2024.16.152.

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Experimental methodology of the thermal vacuum process is that in order to obtain effective and economical production of nanomaterials, it is necessary to ensure a continuous flow of dispersed material inside the heating spiral element. This can done if the material enters the cavity of the heating element together with air. A two-phase system of gas-solid particles arises. The movement occurs in an ascending flow in a heated space with a constant decrease in pressure for 15 s. The results of the studies show that the velocity of material particles in the cavity of spiral heating element of th

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22

Kula, Piotr, Konrad Dybowski, Emilia Wolowiec, and Robert Pietrasik. "“Boost-diffusion” vacuum carburising – Process optimisation." Vacuum 99 (January 2014): 175–79. http://dx.doi.org/10.1016/j.vacuum.2013.05.021.

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23

Li, W., J. Krehl, J. W. Gillespie, et al. "Process and Performance Evaluation of the Vacuum-Assisted Process." Journal of Composite Materials 38, no. 20 (2004): 1803–14. http://dx.doi.org/10.1177/0021998304044769.

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24

Fan, Jianxiang, Guobing Wang, Xiaodong Yan, et al. "Analysis of Maintenance Methods and Process Improvement of Vacuum Laser Collimation System for Dams." Journal of Engineering System 2, no. 2 (2024): 8–12. http://dx.doi.org/10.62517/jes.202402202.

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The method and process of vacuum laser collimation system maintenance is one of the key technologies directly related to the accuracy of dam vacuum laser collimation system measurement value. Taking the maintenance methods and processes of vacuum laser collimation system in Lianlu and Xiacheng as the background, a new set of dam vacuum laser collimation system maintenance methods and processes are proposed, aiming to make up for the gaps in the maintenance of vacuum laser collimation system. It was found that the vacuum pipeline operates at vacuum values between 400 Pa and 900 Pa. The influenc

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25

Sun, Zu Li, Ming En Guo, Jun Li, and Gui Qing Luan. "Influence of Process Parameters on Mechanical Properties of Composites Fabricated by VARTM Process." Applied Mechanics and Materials 201-202 (October 2012): 1084–87. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.1084.

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Some glass fiber/vinyl ester resin composite laminated panels were fabricated by varying levels of resin temperature, resin bleeding time and vacuum level. Interlaminar shear tests were performed to investigate the effects of process parameters on interlaminar shear strength (ISS) of laminated panel. The optimization of processing parameters was also conducted by employing the method of Artificial Neural Networks (ANN) in order to improve the ISS of laminated panel. The optimized test results are: resin temperature 30°C, resin bleeding time 7s, vacuum level 97KPa, and the result of ISS is 41.2

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26

Gao, Zhe, Ming Wei, Wensen Li, Cunzhuang Chen, Changle Li, and Jie Zhao. "Numerical simulation of the vacuum casting process of solid propellants." Journal of Physics: Conference Series 2939, no. 1 (2025): 012031. https://doi.org/10.1088/1742-6596/2939/1/012031.

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Abstract Solid propellant is one of the main components of rocket engines, and the casting of low-viscosity propellant slurry usually uses a vacuum casting process. During the vacuum casting process, the rheological properties of solid propellant slurry are complex, and the theoretical analytical method cannot intuitively and accurately analyze its flow characteristics. Therefore, this paper numerically simulates the casting process through simulation software, uses the Herschel-Bulkley model to characterize the changes in the flow characteristics of solid propellant slurry during the vacuum c

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27

Bui, Thanh Phan, Lenka Dobšáková, and Vladimír Horák. "Modelling of Diffusion Process in Vacuum Drying of Propellants." Advances in Military Technology 18, no. 2 (2023): 195–206. http://dx.doi.org/10.3849/aimt.01850.

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One crucial step in the propellant-making process that takes a lot of time and energy is drying. The study of inert propellants' vacuum drying behaviours – which mimics those of real propellants – is the main focus of this work. This study presents the development of analytical and numerical models for the vacuum drying of inert pro-pellants, which were validated through an in-house vacuum drying experiment. The calculation of effective diffusivity, a crucial parameter characterising the rate of solvent vapour transfer during the vacuum drying of inert propellant samples, is one of the outcome

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Oka, K., T. Morita, and S. Hiramoto. "VACUUM VAPOR DEPOSITION PROCESS FOR CERAMICS DEVELOPMENT OF THE VACUUM VAPOR DEPOSITION PROCESS FOR CERAMICS BY CO2LASER." Materials and Manufacturing Processes 6, no. 2 (1991): 303–13. http://dx.doi.org/10.1080/10426919108934758.

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29

Huang, Si, Jiawei Guo, Tiankun Yi, Songfeng Li, and Taizhong Wu. "Study on the Calculation Method for Pumping Process in as Vacuum System." Journal of Physics: Conference Series 2097, no. 1 (2021): 012026. http://dx.doi.org/10.1088/1742-6596/2097/1/012026.

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Abstract The calculation methods for vacuum system pumping were usually based on some simple theoretical models, the corresponding results had significant deviations from actual situations. In this study, medium and low vacuum systems (including vacuum chambers, pipes and pumps) were taken as research objects. With a measured vacuum system, and relationship between pump’s suction flowrate and inlet pressure, a new calculation method for vacuum pumping time was proposed, in which laminar or turbulent model was selected according to the pipeline’s flow state. New and traditional laminar method w

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30

Collins, Don. "CXS chemical dry vacuum pump brings smart vacuum to the process industry." Vakuum in Forschung und Praxis 24, no. 5 (2012): 6–11. http://dx.doi.org/10.1002/vipr.201200504.

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31

Collins, Don, and Manfred Nagel. "CXS chemical dry vacuum pump brings smart vacuum to the process industry." Vakuum in Forschung und Praxis 26, no. 4 (2014): 30–33. http://dx.doi.org/10.1002/vipr.201400559.

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32

Hamidi, Nurkholis, Yuji Hirata, and Takaharu Tsuruta. "F211 Improving Frozen Quality by Microwave Vacuum Drying as a Preliminary Process." Proceedings of the Thermal Engineering Conference 2006 (2006): 361–62. http://dx.doi.org/10.1299/jsmeted.2006.361.

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33

Rukmayuninda, Ririh, Elisa Anggraeni, Machfud Machfud, and Rochman Taufiqu. "The impact of knowledge vacuum to innovation process during public research organizations merger." Serbian Journal of Management 19, no. 2 (2024): 373–91. https://doi.org/10.5937/sjm19-48504.

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Maintaining innovation process during merger in a merged public research organization is quite a challenge. Knowledge vacuum is a potential rising issue due to merger. This study aims to examine knowledge vacuum as intervening role between organizational factors and individual factor, also how it impacts the innovation process. PLS-SEM is applied by using software SmartPLS 4.0, and 198 innovation actors are involving in questionnaires survey. Surprisingly, the results show that knowledge vacuum positively and significantly influences absorptive and adaptive capability to form distinctive compe

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Xaydarov, Ulug'bek Panjievich, Shamsiddin Erkayevich Tulanov, and Ibrohim Rustam o'g'li Rixsiboyev. "INFLUENCE OF VACUUM EVAPORATION PROCESS ON THE INDEX QUALITY OF YARNS." Innovative Development in Educational Activities 2, no. 18 (2023): 92–97. https://doi.org/10.5281/zenodo.8394488.

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<em>In this article, samples were taken at a joint venture of the German firm Tryuchler, located in Tashkent, and some of them were vacuum evaporated and vacuum evaporated. The quality characteristics of the 24-tex yarn made from a mixture of 100% cotton and 30% polyester fiber with 70% cotton fiber were compared with the results of vacuum-stranded yarn testing.</em>

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Shin, Ki Hang, Byoung Chul Choi, and Ki Woo Nam. "Mechanical Characteristics of Structural Thick Plates Depending on Vacuum Time of RH Process." Advanced Materials Research 1178 (July 25, 2023): 45–55. http://dx.doi.org/10.4028/p-s6gl9t.

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The structural thick plates were manufactured by varying the vacuum time at a constant argon gas flow rate and degree of vacuum during the Ruhrstahl Heraeus (RH) refining process. The inclusion and mechanical properties of the structural thick-plate specimens were evaluated according to vacuum time. The nitrogen in the converter had an effect after the RH process, and as the vacuum time of the RH process increased, the nitrogen content also increased. The nitrogen in the continuous casting (CC) decreased more than that in the converter, and as the vacuum time increased, the hydrogen decreased.

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36

Li, Hong, and Yong Li Zhang. "Research on Process and Pollution of Atmospheric and Vacuum Distillation." Advanced Materials Research 311-313 (August 2011): 1573–76. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1573.

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Key words：Atmospheric and vacuum; distillation; process; pollution Abstract：The atmospheric and vacuum distillation unit was analysed on the device's size, composition, technical route and process. The results show that the flue gas produced by atmospheric and vacuum furnace is the main emission source, and the main pollutants in the flue gas are SO2, NOX and soot. The wastewater pollution is mainly electric desalting salt water, and it was treated in saline wastewater treatment plant in the factory.

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Novikov, D. V. "Equipment for thermal process." Glavnyj mekhanik (Chief Mechanic), no. 8 (August 1, 2020): 10–23. http://dx.doi.org/10.33920/pro-2-2008-01.

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The demand for efficient and qualitative thermal treatment makes certain requirements to the thermal equipment. The thermal equipment, that ideally corresponds to the assigned task of modern production facilities, is vacuum furnaces. The modern production requirements are the boundary conditions for the equipment manufacturers, focusing them on the need for all in one equipment capable of efficient wide production maneuvering, to ensure the possibility of developing and producing new products at minimal cost. As a result of practical research and development, focusing on the world experience a

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Miao, Yupeng, Chunlei Gan, Ming Wang, et al. "Defect analysis of the Cu-Cr-Zr-Nb alloys prepared by the non-vacuum melting process." Journal of Physics: Conference Series 2690, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2690/1/012007.

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Abstract The microstructure and properties of the Cu-Cr-Zr-Nb alloys prepared by non-vacuum melting and vacuum melting were compared and analyzed in this paper. The results showed that, compared with vacuum melting, the alloy prepared by non-vacuum melting had a more uneven microstructure and a coarser grain. In the meantime, the alloy prepared by non-vacuum melting stored less energy and had a lower proportion of HAGBs (high-angle grain boundaries), and the texture distribution along the TD and RD directions was not uniform. In terms of properties, the hardness and electrical conductivity of

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Wong, Dominick, Mahmood Anwar, Sujan Debnath, Abdul Hamid Abdullah, Sudin Izman, and Alokesh Pramanik. "Degassing Process Influence on Tensile Strength of Neat E132 Epoxy Polymeric Materials." Materials Science Forum 1026 (April 2021): 129–35. http://dx.doi.org/10.4028/www.scientific.net/msf.1026.129.

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During the composite’s fabrication process, one of the most common defect occurs is void. Numerous literatures have suggested that the presence of void negatively affect its mechanical properties and effective degassing process is one the solutions for such issue. In this study, experiments were carried out using neat E132 epoxy to investigate the effects of different degassing process (hot water, ultrasonic bath, and vacuum) on its tensile strength. The duration of its process was carried out from 5 – 9 minutes for hot water and ultrasonic bath where vacuum process was extended until 10 minut

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Yeşiltepe, Selçuk, Mehmet Buğdaycı, Onuralp Yücel, and Mustafa Şeşen. "Recycling of Alkaline Batteries via a Carbothermal Reduction Process." Batteries 5, no. 1 (2019): 35. http://dx.doi.org/10.3390/batteries5010035.

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Primary battery recycling has important environmental and economic benefits. According to battery sales worldwide, the most used battery type is alkaline batteries with 75% of market share due to having a higher performance than other primary batteries such as Zn–MnO2. In this study, carbothermal reduction for zinc oxide from battery waste was completed for both vacuum and Ar atmospheres. Thermodynamic data are evaluated for vacuum and Ar atmosphere reduction reactions and results for Zn reduction/evaporation are compared via the FactSage program. Zn vapor and manganese oxide were obtained as

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41

Haban, Alexander, Andreas Schilling, Martin Fehlbier, Toni Karalus, and Stefanie Felicia Kracun. "Development and Process Integration of an Alternative Demoulding System for High-Pressure Die Casting Using a Contoured Vacuum Mask." Metals 14, no. 6 (2024): 691. http://dx.doi.org/10.3390/met14060691.

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This study presents the development and process integration of an alternative demoulding system for high-pressure die casting. The system is aimed at the removal of large structural castings, which are becoming increasingly popular in the industry under the terms mega- and gigacasting. The development differs from conventional systems in the fact that it completely avoids ejectors and realises the demoulding via the principle of vacuum suction cups. Preliminary tests were carried out in which various established materials for vacuum cups were initially identified and the suitability of the sel

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Pamungkas, Ade, Maharani Dewi Solikhah, Fatimah Tresna Pratiwi, Romelan, Matheofani, and Soni Solistia Wirawan. "Investigation of Biodiesel Stability under Vacuum Heating Process." IOP Conference Series: Earth and Environmental Science 1187, no. 1 (2023): 012017. http://dx.doi.org/10.1088/1755-1315/1187/1/012017.

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Abstract High water content is one of the most concerning issues when implementing biodiesel as a diesel fuel blend. Vacuum heating is one of several methods to reduce the water content of biodiesel, at certain conditions, it may damage the stability of biodiesel. This study aims to understand the stability of biodiesel including water content, total acid number, and oxidation stability under vacuum heating process. The three stability parameters were tested according to ASTM D6304, ASTM D664, and EN 15751, respectively. Biodiesel with high water content was heated under a vacuum pressure of -

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Jamaludin, A. S., M. N. M. Razali, N. Jasman, A. N. A. Ghafar, and M. A. Hadi. "Design of spline surface vacuum gripper for pick and place robotic arms." Journal of Modern Manufacturing Systems and Technology 4, no. 2 (2020): 48–55. http://dx.doi.org/10.15282/jmmst.v4i2.5181.

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The gripper is the most important part in an industrial robot. It is related with the environment around the robot. Today, the industrial robot grippers have to be tuned and custom made for each application by engineers, by searching to get the desired repeatability and behaviour. Vacuum suction is one of the grippers in Watch Case Press Production (WCPP) and a mechanism to improve the efficiency of the manufacturing procedure. Pick and place are the important process for the annealing process. Thus, by implementing vacuum suction gripper, the process of pick and place can be improved. The pur

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Sun, Hong-yue, Fei-xiang Shuai, Dong-fei Wang, Cheng-cheng Lv, and Yue-quan Shang. "Vacuum formation and negative pressure transmission under a self-starting drainage process." Quarterly Journal of Engineering Geology and Hydrogeology 54, no. 1 (2020): qjegh2019–129. http://dx.doi.org/10.1144/qjegh2019-129.

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Drainage can effectively control landslides that are caused by the infiltration of rainfall. Laboratory model tests were conducted in this study to investigate an efficient groundwater drainage method. The tests identified a drainage method that self-starts and creates a vacuum in the permeable section through siphoning. In addition, the value of the vacuum pressure in the permeable section is related to the difference in the height from the outlet of the drain to the permeable section. The greater the height, the greater the vacuum pressure generated in the permeable section. However, the vac

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TASAKI, Akira. "Vacuum process techniques for magnetic recording media." SHINKU 30, no. 12 (1987): 1043–45. http://dx.doi.org/10.3131/jvsj.30.1043.

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Lee, Sang Kyu, Tae Jong Lee, and Youngmin Lee. "Development of Process Programmable Vacuum Saturation System." Journal of the Korean Society of Mineral and Energy Resources Engineers 52, no. 3 (2015): 283–93. http://dx.doi.org/10.12972/ksmer.2015.52.3.283.

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HIGANO, Mitsuo. "Vacuum Techniques in the Sake-Brewing Process." Journal of the Society of Mechanical Engineers 111, no. 1081 (2008): 962–63. http://dx.doi.org/10.1299/jsmemag.111.1081_962.

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Paoletti, G. J. "Vacuum retrofits: the process, benefits, and risks." IEEE Industry Applications Magazine 3, no. 5 (1997): 70–84. http://dx.doi.org/10.1109/2943.612240.

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Freeland, A. W., J. R. Germundson, R. L. Swisher, K. P. Barnes, J. A. Phipps, and C. T. Wan. "Simultaneous deposition and lamination process in vacuum." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 13, no. 3 (1995): 1192–95. http://dx.doi.org/10.1116/1.579860.

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Modi, Dhiren, Nuno Correia, Michael Johnson, Andrew Long, Christopher Rudd, and Francois Robitaille. "Active control of the vacuum infusion process." Composites Part A: Applied Science and Manufacturing 38, no. 5 (2007): 1271–87. http://dx.doi.org/10.1016/j.compositesa.2006.11.012.

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