Browsing by Keyword "Shrinkage"

Now showing 1 - 3 of 3
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    EXACTHERM®. La mejora de la calidad de las piezas a través de formas aislantes específicas y avanzadas técnicas de simulación (patentado)
    (2006-06) Prat, Jaime; Meléndez, Antton; Seoane, Alberto; Anglada, Eva; Beeson, Andrew; Arrieta, Mitxel; Galaz, Jon; Jorge, Asier; Vicario, Teresa; Tecnalia Research & Innovation; CIRMETAL
    IBERIA ASHLAND e INASMET TECNALIA, implementan con BETSAIDE S.A.L. una solución innovadora para la sanidad de piezas de altos requerimientos de calidad y de geometría difícil, utilizando su último desarrollo en material para manguitos aislantes de óptimo rendimiento (EXACTHERM®). Este estudio nos muestra cómo se pueden conseguir mejoras de características en las piezas fundidas eliminando defectos causados por deformaciones de grafito o rechupes, mediante el uso de manguitos adaptados (Machos-manguito), fabricados con materiales aislantes avanzados. Previamente, utilizando las últimas técnicas de simulación (cálculo inverso), se testearon diversas variantes de estos productos aislantes, lo que permitió obtener y comparar resultados ahorrando el costo en piezas de las iteraciones que habrían sido necesarias en la planta.
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    Improving casting performance through customized insulating shapes and advanced simulation techniques
    (Curran Associates, 2006) Prat, Jaime; Meléndez, Antton; Seoane, Alberto; Anglada, Eva; Beeson, Andrew; Arrieta, Mitxel; Galaz, Jon; Jorge, Asier; Vicario, Teresa; Tecnalia Research & Innovation; CIRMETAL
    Over the years foundries have been looking for ways to improve their process. IBERIA ASHLAND and INASMET TECNALIA, together with BETSAIDE S.A.L. have implemented an innovative solution for methoding castings to ensure the integrity of the finished parts by using their latest development of customized insulating shapes combined with advanced simulation techniques. This study will show how improvements can be achieved in the mechanical characteristics of a casting by eliminating graphite deformation and shrinkage defects through the use of customized sleeves and insulating cores made of advanced moulding materials. Additionally, by utilizing the latest in simulation techniques, various compositions of the insulating materials can be "tested" effectively, allowing us to compare the final casting, without the need and related cost to produce multiple iterations of the part.
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    Ladle furnace slag as cement replacement in mortar mixes
    (2019) Santamaria, Amaia; Ortega-Lopez, Vanesa; Skaf, Marta; García, Veronica; Gaitero, Juan J.; San-Jose, Jose T.; González, Javier J.; TRAZABILIDAD CIRCULAR; Tecnalia Research & Innovation; ECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓN
    Ladle furnace slag is a significant by-product of the steel-making industry. Depending on the production conditions, the steel-refining process yields two types of basic slag, which are either low or high in silica and alumina, depending on the fluxing temperature and the saturation method. The present investigation focuses on the feasibility of producing mortar mixes, by incorporating both ladle furnace slag types in partial replacement of Portland cement, in amounts of 10%, 20%, 30% and 40% by weight. The fresh and hardened properties of the mortars are analysed, and the hydraulic properties of both types of ladle slag are evaluated. These kinds of by-products are affordable applications in mortars that add useful qualities to the building materials. Their use in partial replacement of cement contributes to global sustainability through the reduction of cement consumption, thereby reducing greenhouse gas emissions.