نتایج جستجو برای: crucible

تعداد نتایج: 884  

2007
Cédric Pradalier

In the aluminium industry, Hot Metal Carriers (HMCs) perform the task of transporting molten aluminium from the smelter (where the aluminium is made) to the casting shed where it is turned into block products. The vehicles weigh approximately 20 tonnes unloaded and resemble forklifts except they have a dedicated hook for manipulating the load, called the crucible. In the perspective of a full a...

2016
VLADIMIR ALEXANDROVICH GRACHEV

In the paper, the author has represented a thermodynamic analysis of a crucible reaction, which takes place in crucible induction furnaces. The author has suggested a diagram of a crucible reaction that took into account partial pressure and activity of the components participating in the process. The author has defined more exactly what effect the elements usually present in cast iron (Mn, S, ...

2012
Javier Mochón Maria Jose Quintana Iñigo Ruiz-Bustinza Roberto González Ojeda Erika Marinas Garcia Miguel Ángel Barbés Fernández Luis Felipe Verdeja González

In modern steelmaking the duration of a working campaign for a blast furnace is related to the life of the crucible. Adding titanium oxide has been a frequent practice in the operation routines for modern blast furnaces, seeking the protection of the crucible walls, independently from its physical or chemical characteristics. These practices, as conventional operation of iron and steelmaking in...

2008
Willem Kuyken Christine A. Padesky Robert Dudley

Case conceptualization is a foundation of cognitive-behavioural therapy (CBT) because it describes and explains clients’ presentations in ways that inform interventions. Yet the evidence base challenges the claimed benefits of case conceptualization. This paper reviews the rationale and evidence base for case conceptualization and outlines a new approach that uses the metaphor of a case concept...

Journal: :Dental materials journal 2001
H Fukui W Yang S Yamada Y Fujishiro A Morita M Niinomi

Recently, titanium-tantalum alloys have been studied as implant materials for dental and orthopedic surgery. However, titanium and tantalum are difficult to mix by common arc melting and induction melting, because of their high melting point and the marked difference between their densities (Ti: 1,680 degrees C, 4.5 g/cm3, Ta: 2,990 degrees C, 16.6 g/cm3). Thus, the Cold Crucible Levitation Mel...

Journal: :Scientific American 1895

Journal: :Evolution 1998

2004
James Gibson

[1] The courtroom is the crucible of the law, where the fire of litigation tests the intellectual and political forces that inform social policy. Discovery the process by which litigants identify and assemble their evidence provides the fuel for the fire. Indeed, not long ago most of the evidence that the discovery process produced was, quite literally, flammable: boxes upon boxes of paper docu...

Journal: :Dental materials journal 1985
J Takahashi M Okazaki H Kimura Y Furuta

Rods of Ni-43.5wt% Ti alloy were prepared under various casting conditions. Specimens which were melted in a cordierite crucible and cast in a phosphate-bonded investment mold had less strength and elongation than those melted in a copper crucible and cast in a phosphate-bonded investment mold. All castings exhibited superelasticity at room temperature. The upper limit of recoverable strain was...

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