scholarly journals Study of Controlled Aluminum-Vanadium Alloy Prepared by Vacuum Resistance Furnace

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Lanjie Li ◽  
Bingjun Li ◽  
Heli Wan ◽  
Mao Chen ◽  
Sze Long Yee

In this paper, V2O3 is used as the raw material, and an Al-V alloy is synthesized by vacuum resistance furnace heating. The results show that with the extension of the heating time, the separation effect of the alloy and the slag and the uniformity of the alloy are significantly improved. The slag is fully separated from the alloy, and the composition of the alloy is more uniformly distributed when the heating time is controlled at 1 hour. In addition, the composition of the alloy is affected by increasing content of Al. In particular, the obtained alloy composition meets commercial standards when the mass ratio of Al is 31-36 wt%. The effect of different mass ratios of CaO on the quality of slag series and alloys was also investigated. The results show that the composition distribution of the slag system can be effectively changed with increasing the mass ratio of CaO, and the uniformity of the alloy composition is also optimized. When the mass ratio of CaO is 27 wt%, the alloy and slag are well separated, and the composition distribution in the obtained alloy is more uniform. In addition, the content of impurities in the alloy can be effectively improved under vacuum. Therefore, it is suggested that a vacuum resistance furnace should be applied in the industrial production of high-quality Al-V alloy.

Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.


2021 ◽  
Vol 5 (2) ◽  
pp. 714-722
Author(s):  
Noverita Sprinse Vinolina ◽  
Antonio Marro Sipayung ◽  
Dardanila ◽  
Sondang Pintauli

This program is conducted to assist Siponjot Village while empowering the people of Siponjot Village to be able to utilize and maximize the benefit of the village forest. Village forest might support the availability of raw materials required for making musical instruments, such as high quality of wood, including how to process wood waste from making musical instruments to be used as creative souvenirs and improve the economic value. The raw material for production determined its results of the production of wood-based musical instruments. Thus, in order to produce a high quality tanginang, hasapi, and gondang, which previously began to be produced by arts crafts in the Sitangkubang area of ​​Siponjot Village, a high quality of raw materials is needed. The community service team surveyed the location of planting seeds for village forest restoration, provided socialization related to the importance of village forest cultivation and the suitability of the Siponjot Village area for the cultivation of these plants. Village forest restoration aims to maintain the beauty and beauty of the village. Implementation of village reforestation activities starting from socializing forest tourism and the strength of village forests to the community, followed by a discussion about village forest management and its economic benefits. Handover of a thousand units of forest plant seedlings given to the villagers of Siponjot as part of the forest restoration program in the area.


Author(s):  
Hossein Mansour ◽  
Mehdi Behzad

Morus Alba or mulberry is a wood species that is broadly used in making musical instruments in Eastern countries. However, the mechanical and acoustical properties of this type of wood are not investigated properly. In this study a set of features, previously examined for other species, are applied to this wood and its acoustic quality is evaluated. Setar, a Persian musical instrument made of mulberry wood, is selected as the test case of this experiment. Different samples of wood are gathered and categorized based on their appropriateness for Setar construction. The quality of each sample is identified based on the Perceptual knowledge of professional Setar makers. The most effective features are then selected and their average values are calculated for high quality samples. The result of this study helps Setar makers to select proper raw material before making an instrument. In addition, this approach can be applied to other wood species used in music industry.


2018 ◽  
Vol 1 (1) ◽  
pp. 3-26
Author(s):  
Firman Mutakin ◽  
Tumpal Sihaloho

Indonesia is one among three major producers of cocoa beans. Nevertheless, industrial performance of cocoa beans industrial process bearish for the past few years. The purposes of this research are to analyse policies related to development the cocoa processing industry as well as analizing factor which cause low quality of cocoa beans. Factors that caused an uncondusif business climate on cocoa beans industry ar among of hers; high administrative fee in form of tax and entry charges for raw material that caused and increase in production cost structure of the industrial process of the cocoa beans, The low quality of the cocoa benas itself resulted from the un willingness of the farmers to ferment their products, ages of plantswhich more that its productive age and caused small beans producted, mixture between high quality and low quality beans and bugs infection of cocoa plants.


2018 ◽  
Vol 12 (01) ◽  
pp. 1
Author(s):  
Ade Galuh Rakhmadevi ◽  
Sih Yuwanti ◽  
Bambang Herry Purnomo

The intensity industrial competition required Tape Handayani 82 factory to develop its quality to compete in the market. The development of quality could be done by searching information about quality attribute of suwar suwir as costumer expectation. The purpose of this research was to identify quality attribute of suwar suwir and technical response requiring improvement, which could fulfill costumer expectation. Data was taken by distributing questionnaire to 65 respondents with non probability sampling method at 4 subdistrict in Bondowoso Regency, and interview to the producer of suwar suwir “Tape Handayani 82”. The research result showed that the quality attributs that needed to be improved were the fixed composition, the self life of the product, the fixed texture, the label of composition, the suitability of the product with the label, the taste variation and packaging form. The technical responses which improved in relation to quality improvement were the composition of the additional materials, the composition of the raw material, the maturity of the tape, the heating temperature, the heating time, the acidity level the tape, the stirring technique, the mixing time, the primary packaging type, smoothing technique, chilling time and fiber removal. The target value to the technical response of the Handayani 82 factory was less than the bencmark. This mean that suwar suwir of Tape Handayani 82 has not met the target in fulfilling the quality of suwar suwir as costumer expectation. Keywords: quality, suwar suwir, quality function deploment (QFD), customer


2020 ◽  
Vol 24 (2) ◽  
pp. 9-20
Author(s):  
Kinga Borek ◽  
Wacław Romaniuk

AbstractModern livestock facilities necessary in the production of milk, meat or other animal products should be constructed with environmental protection in mind, while ensuring high quality of production and animal welfare. The high level of mechanization in modern dairy farms, including automated and robotic processes, allows obtaining high quality raw material (e.g. milk), and significantly increasing labor and production efficiency. In addition, the use of photovoltaic (PV) panels, heat recovery from milk and obtaining biogas from the manure fermentation process, contributes to large energy savings on the farm. Excess of natural fertilizers, which are an animal byproduct, can be used as a substrate for methane fermentation. The presented examples of obtaining renewable energy allow improving the economic efficiency of animal production. They also ensure appropriate environmental conditions through the innovative management of natural fertilizers.


2019 ◽  
Vol 285 ◽  
pp. 411-416 ◽  
Author(s):  
Jokin Lozares ◽  
Gorka Plata ◽  
Iñaki Hurtado ◽  
Zigor Azpilgain ◽  
Iñigo Loizaga

Nowadays, globalisation enables a rapid uptake of the classical manufacturing technologies. In order to remain competitive and fulfil the global trend of reduction of emissions, innovative production processes that reduce the energy and raw material consumption should arise. Semisolid forging (SSF) is one of those techniques with great potential to fulfil those requirements maintaining the high quality of the components. Thus, the objective of this work is twofold: to produce a complex geometry part saving material and energy using the off-the-shelf S48C steel grade, and to demonstrate the capability of the process to produce a pre-series of 250 components without excessive tooling damage.


Author(s):  
T.S. Morozova

A study into the failure causes of mixing and charging equipment confirms that the main impact on the probability of accidents is the use of raw materials that do not meet the specifications and have unstable properties. The raw materials used for explosives preparation in mechanized charging of boreholes include such components as ammonium nitrate, emulsion phase, diesel fuel, emulsifier and others. The paper describes the application of various formulations with these components in specific types of mixing and charging machines manufactured by AZOTTECH LLC. The main properties that affect the quality of raw materials are summarised, and the incoming inspection of explosive components is described as part of the acceptance procedure at temporary storage sites at a hazardous production facility. The paper describes common types of equipment failures and maintenance procedures when using substandard raw materials. The conclusion highlights the key practices to improve the equipment uptime as well as recommendations for incoming inspection and the use of high-quality explosive components.


2021 ◽  
pp. 29-32
Author(s):  
Ирина Урузмаговна Кусова ◽  
Антон Юрьевич Никитенко ◽  
Владимир Андреевич Олейников

Разработка безотходных и малоотходных технологий - одна из важнейших задач развития пищевой промышленности. Апсайклинг (англ. upcycling) - вторичное использование чего-либо для создания новых продуктов с целью снижения отходов. Зерновая дробина - ценное сырье для производства мучных кулинарных изделий, так как в своем составе содержит пищевые волокна. Отработанные пивные дрожжи представляют собой высококачественный пищевой продукт, компоненты которого благоприятно воздействуют на пищеварение. Апсайклинг пивной дробины как сырьевого компонента позволяет получить в том числе и хлебобулочные изделия, которые по органолептическим и физико-химическим показателям не отличаются от изделий, изготовленных по традиционной рецептуре. Апсайклинг пивных дрожжей целесообразен при производстве мучных кулинарных изделий, благодаря насыщенному химическому составу, может применяться в качестве обогащения изделий, при приготовлении по традиционным рецептурам. В данном исследовании было изучено влияние добавок пивной дробины и остаточных пивных дрожжей на качество хлеба. Применение остаточных пивных дрожжей и пивной дробины обеспечивает выработку хлеба высокого качества и, вероятно, способствует дополнительному обогащению мучных кулинарных изделий белками, пищевыми волокнами, микроэлементами, витаминами. Рассматриваемая тема по использованию апсайклинга пивоваренных ресурсов актуальна для предприятий общественного питания, имеющих пивоварни в плане выработки продукции, которую можно отнести к группе с функциональными характеристиками, так как пивная дробина и остаточные пивные дрожжи - это источник естественных нутриентов. Апсайклинг в пищевой промышленности - это актуальный и современный технологический прием, позволяющий решить множество проблем, а в первую очередь внести пользу в рацион питания, без изменения привычных органолептических характеристик кулинарных изделий. One of the most important tasks in the development of the food industry is the development of waste-free and low-waste technologies. Upcycling is the reuse of something to create new products in order to reduce waste. Grain grain is a valuable raw material for the production of flour culinary products, as it contains dietary fiber. Waste brewer's yeast is a high-quality food product, the components of which are beneficially involved in digestion. Upcycling of brewer's grains as a raw material component allows obtaining, among other things, bakery products, which, in terms of organoleptic and physicochemical indicators, do not differ from products made according to traditional recipes. Upcycling of brewer's yeast in the production of flour culinary products is expedient due to its rich chemical composition, which can be used as product enrichment when cooking according to traditional recipes. In this study, the effect of the addition of brewer's grains and residual brewer's yeast on the quality of bread was examined. The use of residual brewer's yeast and brewer's grains ensures the production of high-quality bread and probably contributes to the additional enrichment of flour culinary products with proteins, dietary fibers, microelements, vitamins. The topic under consideration on the use of upcycling of brewing resources is relevant for public catering enterprises that have breweries in terms of product development, which can be attributed to a group with functional characteristics, since brewer's grains and residual brewer's yeast are a source of natural nutrients. Upcycling in the food industry is a relevant and modern technological method that allows you to solve many problems, and, first of all, bring benefits to the diet, without changing the usual organoleptic characteristics of culinary products.


2013 ◽  
Vol 709 ◽  
pp. 36-39 ◽  
Author(s):  
Shu Jie Zhuang ◽  
Bing Teng ◽  
Li Feng Cao ◽  
De Gao Zhong ◽  
Ke Feng ◽  
...  

4-dimethylamino-N-methyl -4-stilbazolium tosylate(DAST) was synthesized by the condensation and ion exchange reaction of 4-methyl-N-methyl pyridinium tosylate, 4-N,N-dimethylamino -benzaldehyde and silver p-toluenesulfonate, the reaction procedure was easy with high efficiency. The purity of the product was further improved by successive abstersion and recrystallization. The powder was investigated by Fourier transform infrared spectrum, nuclear magnetic resonance and elemental analysis. The results showed that the quality of the powder as crystal raw material was very high, the product could meet the requirements for crystal growth, the procedure of washing the product by chloroform was important to achieve the high quality.


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