Results 21 to 30 of about 25,332 (303)
Thermal reclamation of used sand produced by binder jetting processes [PDF]
MATEC Web of Conferences, 2023 The binder jetting process for the manufacturing of sand moulds and cores for foundry applications generates appreciable quantity of used sand. This sand is generally discarded to dedicated landfills as a waste management practice in the country.
Thaba Thapelo Precious +1 more
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High-quality manufacturing method of complicated castings based on multi-material hybrid moulding process [PDF]
China Foundry, 2018 A multi-material hybrid patternless moulding process for complicated castings has been proposed. Moulding sands used in the hybrid moulding process include silica sand, ceramic sand, chromite sand, zircon sand, and steel shot sand.
Li-min Liu, Zhong-de Shan, Feng Liu
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Assessment of South African Chromite Sand for Binder Jetting Application [PDF]
MATEC Web of Conferences, 2022 Binder Jetting is an Additive manufacturing (AM) technique in which binding liquid is jetted on layers of powdered materials, selectively according to the Computer Aided Design (CAD) model to form a 3D part.
Chauke Julieth Langutani +2 more
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Effect of Wood Fiber on the Strength of Calcareous Sand Rapidly Seeped by Colloidal Silica [PDF]
MATEC Web of Conferences, 2019 Silica nano-particles are suspended in the colloidal silica and can be induced to gradually gel after the PH value changes. Thus colloidal silica can be utilized to rapidly seep through loose calcareous sand, and the silicon gel is gradually formed to ...
Jin Weifeng +3 more
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Geofluids, 2022 Colloidal silica, which has a low viscosity, can seep quickly through sand and subsequently form silica gel to stabilize the sand. The addition of carbon nanotubes can improve the strength of the sand-gel composite.
Weifeng Jin, Ying Tao, Rongzhong Cheng
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Performance of digital patternless freeze-casting sand mould
China Foundry, 2020 Digital patternless freeze-casting technology is a new approach for obtaining frozen sand moulds using digital milling technology. The change law of tensile strength and air permeability of frozen sand moulds (100-mesh and 200-mesh silica sand, and ...
Zhong-de Shan, Hao-qin Yang, Feng Liu
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Preliminary Evaluation of Silica Sand in Sudan with Respect to Fracture Sand [PDF]
Journal of Petroleum & Environmental Biotechnology, 2016 Hydraulic fracturing is a well stimulation method performed on reservoirs with low permeability to improve the flow of hydrocarbon into wellbore. Certain chemicals are injected into the well under very high pressure; propping agent, such as sand is added to the fracturing fluid to keep the fracture open. Silica sand was appeared as ideal proppant agent
Mohammed Khair EM, Mohammed Faried
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Synthesis of microforsterite using derived-amorphous-silica of silica sands [PDF]
AIP Conference Proceedings, 2016 Synthesis of microforsterite (Mg2SiO4) has been successfully done by a simple method benefiting of the local silica sands from Tanah Laut, Indonesia. The starting material was amorphous silica powder which was processed using coprecipitation method from the sands. The silica powder was obtained from a series of stages of the purification process of the
Upik Nurbaiti +3 more
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One-dimensional dynamic compressive behavior of dry calcareous sand at high strain rates
Journal of Rock Mechanics and Geotechnical Engineering, 2019 Calcareous sand has distinct characteristics in comparison with silica sand, such as dynamic behavior at high strain rates (HSRs). This is closely related to pile driving, aircraft wheel loading and mining activities.
Yaru Lv, Jiagui Liu, Ziming Xiong
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Alternative Evaluation of the Properties of the Silica Sands
Archives of Metallurgy and Materials, 2014 Abstract For the evaluation of silica sands, which belongs to the most employed sands of foundry molding mixtures, there are a number of methods and techniques to characterize their quality. This implies good knowledge of their strengths and weaknesses.
Beňo, Jaroslav +4 more
openaire +3 more sources