Microwave Absorption by Used Moulding and Core Sands

Nowak, D.; Stachowicz, M.; Granat, K.; Pigiel, M.

doi:10.2478/v10266-012-0087-9

Cited by 5 publications

(9 citation statements)

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“…The issues of applying SHF radiation in technical systems, including transport, are covered in [8][9][10][11]. Analysis of available publications shows that as for the efficiency of warming-up and, to a greater extent, maintaining the optimum temperature of TF the given method is the most competitive.…”

Section: Using Shf Radiation For Technological Fluids Preheatingmentioning

confidence: 99%

Improving vehicle adaptability to the operating conditions of «smart» cities in the northern regions

Anisimov

Magaril

Магарил

et al. 2016

E3S Web of Conferences

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Abstract. The paper reviews a relevant problem of providing a higher quality of people's living in the northern regions by the application of the modern technologies within transport in order to improve its environmental performance and efficiency. The aim of the research is to substantiate methods of increasing the adaptability of vehicles to variable low-temperature operating conditions based on a neural control system of preheating and maintaining the optimum temperature of technological fluids by SHF radiation and improving diesel fuel properties by introducing a multifunctional additive. It has been found that SHF radiation influences the physical and chemical parameters of diesel fuel, as well as the engine output parameters. SHF radiation results in a reduction of fuel consumption to 7%, smoke from the exhaust to 15%, and nitrogen oxide emission to 30%. A conclusion is made that using SHF radiation for technological fuel preheating is essential. An approach has been developed that improves low-temperature properties of diesel fuels and increases engine operation efficiency under severe climatic conditions by introducing a multifunctional additive. The additive will enable a significant decrease in fuel consumption under low-temperature operating conditions and a complex improvement of fuel properties.

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Section: Using Shf Radiation For Technological Fluids Preheatingmentioning

confidence: 99%

Improving vehicle adaptability to the operating conditions of «smart» cities in the northern regions

Anisimov

Magaril

Магарил

et al. 2016

E3S Web of Conferences

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“…Research on microwave drying of molding sand with bentonite [9,13] showed that it is possible not only to shorten the process time (even 10 times), but also to improve its properties. The compressive and shear strength is higher by 20-35% and 5-10%, respectively, than that of conventionally dried masses.…”

Section: Introductionmentioning

confidence: 99%

“…Of key importance in the microwave drying process is the selection of appropriate parameters: radiation power and heating time. During too intensive microwave drying, the increasing pressure inside the material, especially when the phase it contains turns into a gas state, with limited permeability, may lead to deformation or even destruction of the product [13,15].…”

Section: Introductionmentioning

confidence: 99%

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Archives of Foundry Engineering

Paduchowicz,

Granat,

Biały

2020

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The paper presents results of influence microwave drying on strength and technological properties of molding sand with gypsum binder researches, which, immediately after making and after the natural initial setting in air for 1, 2 or 5 hours, was heated with 250 W microwave power for 3, 6, 9 and 12 min time periods. The test was carried out on a mass containing (% -wt.): 88% Grudzeń-Las quartz sand, 12% "Dolina Nidy" plaster gypsum and 6% water. The loss of moisture content during natural drying and then microwave drying was determined, significant from the point of view of using the mass with gypsum binder in the production of products, using an environmentally friendly technology without casting incompatibilities. Additionally, the compressive strength of the mass was measured. The influence of both drying methods on the binder crystallization process and the associated mass strength was demonstrated, especially in terms of the possibility of selecting parameters and / or intensifying a specific drying method for use in the technology of manufacturing molds and foundry cores.

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“…In many domestic and foreign research centres, studies are carried out to mitigate the negative characteristics of foundry sands with water glass [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

An Innovative Method for the Dehydration Hardening of Modified Inorganic Binders

Izdebska-Szanda

Kamińska

Angrecki

et al. 2016

Archives of Metallurgy and Materials

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The results of research on the possibility of using a gaseous medium (hot air) as a hardening agent for inorganic binders were discussed, and tests on the reclamation of waste moulding sands were carried out. The research programme also included the use of a modernized test stand for hardening of foundry sands with gaseous agents and a pilot plant for the sand reclamation. Cores made on the test stand were examined for the basic technological properties and were also used in moulds for the trial knocking out of castings. Two types of binders were tested, i.e. a modified water glass designated as Binder A and, for comparison, a reference material which was hydrated sodium silicate R145. The hardener for the sand mixtures was hot air (the dehydration of water glass). Trials of the sand reclamation were carried out in a laboratory pilot plant, installed and operating at the Foundry Research Institute. The obtained reclaim was added in different amounts to the sand mixtures subjected to technological tests. The next step included the manufacture of test moulds, pouring them with aluminium alloy, and knocking out of castings to test the collapsibility of moulds and cores.

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Microwave Absorption by Used Moulding and Core Sands

Cited by 5 publications

References 0 publications

Improving vehicle adaptability to the operating conditions of «smart» cities in the northern regions

Improving vehicle adaptability to the operating conditions of «smart» cities in the northern regions

Archives of Foundry Engineering

An Innovative Method for the Dehydration Hardening of Modified Inorganic Binders

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