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Characterization of the Strength of a Natural Sand and Artificial Sand Core Manufactured with Inorganic Binder
물유리계 바인더로 제조한 천연주물사와 인공주물사 중자의 강도 특성
Min A Bae, Pan Seong Kim, Kyeong Ho Kim, Man Sig Lee, Jae Ho Baek
배민아, 김판성, 김경호, 이만식, 백재호
Korean J. Met. Mater. 2021;59(4):273-280.   Published online 2021 Mar 24
DOI: https://doi.org/10.3365/KJMM.2021.59.4.273

Natural sand and organic binders are commonly used in casting processes, but these ingredients produce environmental problems with dust and harmful TVOC(Total Volatile Organic Carbon) gases. Research on the introduction of artificial sand and inorganic binders to solve these environmental problems is being actively conducted mainly in the casting industry...... More

The Effect of the Surface Energy of Water Glass on the Fluidity of Sand
Min A Bae, Man Sig Lee, Jae Ho Baek
Korean J. Met. Mater. 2020;58(5):319-325.   Published online 2020 Apr 20
DOI: https://doi.org/10.3365/KJMM.2020.58.5.319

In recent years, the metal casting industry has sought to meet ever more stringent environmental standards. Inorganic binders based on silicate chemistry have many advantages with respect to environmental issues, but often suffer from reduced strength, burn-on and poor water-resistance. In particular, when sand is mixed with a water glass..... More

                           Cited By 1
Effects of Jetting Parameters and Sodium Silicate-Based Binder on Droplet Formation
액적 형성에 미치는 물유리계 바인더의 조성과 토출조건의 영향
Seongeun Pyeon, Man Sig Lee, Dae-Won Park, Jae Ho Baek
편성은, 이만식, 박대원, 백재호
Korean J. Met. Mater. 2020;58(4):278-285.   Published online 2020 Mar 10
DOI: https://doi.org/10.3365/KJMM.2020.58.4.278

Binder jetting additive manufacturing is one of the 3D printing technologies currently used to manufacture 3D geometries. In this process, a liquid binder agent is ejected to a desired position of a substrate. The binder’s properties and the jetting condition used for form droplets can affect the formability of the..... More

Effect of P/Al Molar Ratio and Curing Conditions of CBAPC Binder on Flexural Strength and Moisture Resistance of Artificial Sand Core
CBAPC 바인더로 제조한 인공사 중자의 강도 및 내습성에 미치는 P/Al 몰 비와 경화 조건의 영향
Hyeon Gon Oh, DongKook Park, Yangdo Kim, Man Sig Lee
오현곤, 박동국, 김양도, 이만식
Korean J. Met. Mater. 2019;57(12):808-816.   Published online 2019 Nov 22
DOI: https://doi.org/10.3365/KJMM.2019.57.12.808

CBAPC (chemically bonded aluminum phosphate ceramic) binders have various advantages, including superior corrosion resistance and strength at high temperature. They are also a non-toxic and eco-friendly material. We investigated an inorganic binder based on CBAPC using artificial sand for casting. The CBAPC binders were synthesized with various P/Al molar ratios..... More

                           Cited By 1
Effect of Additives on the Sand Burning of Inorganic Binder in Al-Si7Mg Alloy Casting
물유리계 바인더의 첨가제가 Al-Si7Mg 합금 주조 시 소착에 미치는 영향
Min A Bae, Myung Hwan Kim, Jeong-Wook Park, Man Sig Lee
배민아, 김명환, 박정욱, 이만식
Korean J. Met. Mater. 2018;56(4):327-333.   Published online 2018 Apr 5
DOI: https://doi.org/10.3365/KJMM.2018.56.4.327

Traditional organic binders used by the foundry industry produce problems such as generation of volatile organic compounds(VOCs), smoke and etc. A water glass binder system has been developed to improve the casting strength and to solve the environmental problems. However the water glass binder has a serious problem of sand..... More

         Cited By 1
Infrared Spectra and Thermal Properties of Sodium Silicate Solutions
규산나트륨 수용액의 분자결합구조 및 열적특성 연구
Young Bok Ryu, Man Sig Lee
류영복, 이만식
Korean J. Met. Mater. 2018;56(1):72-78.   Published online 2018 Jan 1
DOI: https://doi.org/10.3365/KJMM.2018.56.1.72

An inorganic binder is a good way to mitigate the environmental issues of organic binders containing phenol, formaldehyde, etc. One of the most representative materials in the field of inorganic moulding sand binders is a group of binder systems based on alkali silicate compounds, however, many aspects need to be..... More

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