Browsing by Subject "molding sand"

Now showing 1 - 8 of 8

Access status: Open Access ,
An analysis of the prospects of the use of magnetic water treatment in foundry engineering
(AGH University Press, 2023) Dan, Leonid; Trofimova, Larisa Alekseevna
Scientists are currently focused on creating technologies that produce positive results without affecting the environment. One such technology is magnetic water treatment. In this paper, an analytical review of publications devoted to the application of magnetic treatment of water in various branches of engineering, agriculture, and medicine is carried out. Current views on the structure of water molecules, as well as the theories explaining the influence of the magnetic treatment of water on its properties, are reviewed. The results of studies of the influence of water treated by a magnetic field on the properties of molding sand are analyzed, including those in which the authors of the article took part. It is shown that the magnetic treatment of still water can increase the green strength of the molding sand containing this water from 0.035 to 0.052 MPa, and that of water in motion to 0.075 MPa. Thanks to this, the amount of binder in the molding sand can be reduced. It is concluded that the use of magnetically treated water in foundries is promising.
Access status: Open Access ,
Density distribution and resin migration investigations in samples of sand core made by blowing method
(AGH University of Science and Technology Press, 2017) Dańko, Rafał; Jamrozowicz, Łukasz
Resin migration in a core can occur during the core production process performed by blowing methods in which the core sand is transported into the core box as a two-phase sand-air flux characterized by various working parameters (working pressure, shooting time, volumetric concentration). This migration is the result of the resin being blown off from the matrix grain surfaces by compressed air. The methodology of the investigation of this effect developed at AGH University of Science and Technology is presented in this paper. The results of the resin migration tests obtained for cores made with cold-box technology at various working parameters of the shooting process are also shown.
Access status: Open Access ,
Determination of binder content in traditional sandmixes by microwave method
(AGH University of Science and Technology Press, 2017) Nowak, Daniel
This paper presents preliminary research on the possibility of determining the binder content in traditional sandmixes by the microwave method. The research included examinations of three kinds of bentonite. The presented measurements were carried-out with the use of a special stand - the so-called slot line. The concentration of the binder in molding sand was determined on the grounds of measurements of a parameter, i.e., absorbed power or output power of the electromagnetic wave. One of the main advantages of the suggested new method is the short time of the measurement.
Access status: Open Access ,
Environmentally friendly foundry molding sands as a part of Green Deal policy
(2025) Major-Gabryś, Katarzyna
Wydział Odlewnictwa
This conference abstract shows the results achieved within NetCastPL4.0 project. The project is being realized in cooperation between AGH Faculty of Foundry Engineering (Leader), CNR-ICMATE and Aalto University School of Engineering. The work presented during XXXI. medzinárodnej vedeckej konferencie slovenských, českých a poľských zlievačov SPOLUPRACA 2025 in Rajecke Teplice (Slovak Republik) aimed analyzing modern solutions for molding sands, both with organic and inorganic binders. In molding sands with organic binders, the innovative approach of replacing part of the binder with biodegradable additives reduces the harmfulness of molding sand at the stage of casting production a solution, molding sands with organic binders based on modified with furfuryl alcohol resins cured by hardeners with reduced sulfur content, molding technologies with alkyd resins hardened by catalyst based on isocyanates and alkaline phenolic resin hardened by esters. Molding sands with environmentally friendly inorganic binders based on sodium silicates and aluminosilicates were also analyzed.
Access status: Open Access ,
Selection of chemically cured molding sands’ with inorganic binders dedicated to 3D sand printing
(2025) Halejcio, Dawid; Major-Gabryś, Katarzyna
Wydział Odlewnictwa
This conference abstract shows the results achieved within NetCastPL4.0 project. The project is being realized in cooperation between AGH Faculty of Foundry Engineering (Leader), CNR-ICMATE and Aalto University School of Engineering. The work presented during XXXI. medzinárodnej vedeckej konferencie slovenských, českých a poľských zlievačov SPOLUPRACA 2025 in Rajecke Teplice (Slovak Republik) determined the influence of molding sands’ with different inorganic binders composition on their chosen properties. The molding sands with 3 commercial inorganic binders used in traditional mold and core production technologies were tested as well as the molding sands dedicated to 3D printing with new binders based on them. Four types of hardener were used for chemical curing.
Access status: Open Access ,
The influence of furfuryl resin type – classical and designed for sand 3D printing, on cast iron castings microstructure and surface roughness
(2025) Major-Gabryś, Katarzyna; Halejcio, Dawid; Fijołek, Andrzej; Marosz, Jan; Górny, Marcin
Wydział Odlewnictwa
This conference abstract shows the results achieved within NetCastPL4.0 project. The project is being realized in cooperation between AGH Faculty of Foundry Engineering (Leader), CNR-ICMATE and Aalto University School of Engineering. This work, presented during the V International Conference of Casting and Materials Engineering ICCME 25 in Krakow, Poland on October 27-28, 2025, describes the research on molding sands for molds and cores 3D printing. The work concerns the influence of furfuryl resin type (classical and designed for 3D printing) on cast iron castings properties. The pouring parameters were elaborated on the basis of MAGMA software. The microscopic observations of castings, produced in classical and 3D printed molds were conducted as well as roughness of the samples assessment.
Access status: Open Access ,
The use of green molding materials in the production of advanced lightweighting castings
(2025) Major-Gabryś, Katarzyna; Drożyński, Dariusz; Górny, Marcin; Marosz, Jan; Lelito, Janusz
Wydział Odlewnictwa
This conference abstract shows the results achieved within NetCastPL4.0 project. The project is being realized in cooperation between AGH Faculty of Foundry Engineering (Leader), CNR-ICMATE and Aalto University School of Engineering. This work, presented during the V International Conference of Casting and Materials Engineering ICCME 25 in Krakow, Poland on October 27-28, 2025, describes the research connected with the development of molding compounds for thin-walled castings. Two compounds with organic binders and two compounds with inorganic binders of self-curing molding sands were tested. Tests were carried out on the tensile and bending strength, permeability, and friability of the compounds. For selected molding sands, tests were carried out on their thermophysical properties (hot distortion parameter), gas emission, and thermal degradation. For castings production also molds produced using additive manufacturing (3D printing technology) were used.
Access status: Open Access ,
The use of green molding materials in the production of advanced lightweighting castings
Major-Gabryś, Katarzyna; Drożyński, Dariusz; Górny, Marcin; Marosz, Jan; Lelito, Janusz
Wydział Odlewnictwa
This conference presentation shows the results achieved within NetCastPL4.0 project (Title: Networking for advancing excellence and capacity in light-weight castings for Foundry 4.0 in Poland - NetCastPL4.0; ID: 101159771; Program: Horizon Europe; Funder: Komisja Europejska (KE)). The project is being realized in cooperation between AGH Faculty of Foundry Engineering (Leader), CNR-ICMATE and Aalto University School of Engineering. This work, presented during the V International Conference of Casting and Materials Engineering ICCME 25 in Krakow, Poland on October 27-28, 2025, describes the research connected with the development of molding compounds for thin-walled castings. Two compounds with organic binders and two compounds with inorganic binders of self-curing molding sands were tested. Tests were carried out on the tensile and bending strength, permeability, and friability of the compounds. For selected molding sands, tests were carried out on their thermophysical properties (hot distortion parameter), gas emission, and thermal degradation. For castings production also molds produced using additive manufacturing (3D printing technology) were used.