Results 221 to 230 of about 132,321 (265)

Hot Forming of Ceramics

1970
This chapter discusses hot-consolidation of ceramic powders with and without additives, and hot working of ceramic bodies. Hot consolidation (e.g., by hot pressing) of powders without sintering additives is shown to generally produce the finest grain sizes.
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Hot Kinetic Forming of Metals

1973
Tests are described in the use of a large tool for the hot kinetic forming of metals. The tool basically comprises (i) a barrel and breech assembly, used to accelerate a hot metal billet to a velocity of the order of 100 m/s, and (ii) a closed die-set into which the billet is projected so that it takes up the form of the die-set under the heavy inertia
R. Balendra, F. W. Travis
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Recylcing of the Dross Formed in Hot Galvanizing

Metallurgist, 2005
A comparison is made of the characteristics of dross formed on lines that make rolled products with anti-corrosion coatings. Two methods of recycling dross to rid it of harmful impurities are examined. In distillation sublimation, an increase in temperature to 1280°C helps maximize the amount of zinc that is transferred from the dross to the storage ...
A. V. Shitov, A. N. Klimushkin, O. A. Stolyarskii, E. N. Agapeev, P. V. Lobachev   +4 more
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Kinetics of hot-pressing: The exponential form

Journal of Materials Science Letters, 1986
where 0 is the relative density; t is the time (sec); P is the applied pressure (dyncm-2); q is the viscosity (poise); ~ is the strain rate (see-l); A, B are the constants; DE is the lattice-diffusion coefficient (cm 2 s e e l ) ; D b is the grain-boundary diffusion coefficient (cm z see -1); Q is the volume of vacancy (cm3); a~ is the effective stress
Lin, W. Y., Hon, M. H., Yang, Seng-Jenn
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Hot forming of a polyphenylene sulphide composite

Journal of Materials Processing Technology, 1993
Abstract Whilst PPS composites are hot formable due to its thermoplastic properties, they suffer springback problems resulting in an inability to completely retain the formed shape. This paper reports on the effect of the preheating time, forming temperature and holding time on the final springback for a cross woven 40% glass fibre reinforced PPS ...
F. Boey, A.C. Lua, C.Y. Yue
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Hot Forming of Sheet Titanium Alloy

SAE Technical Paper Series, 1966
<div class="htmlview paragraph">Development of integrally heated draw dies and insulated die cases with a capability for accepting interchangeable die inserts greatly reduced problems of producing severely formed sheet titanium alloy airframe parts. Parts which were previously made in a multiple series of ambient temperature performing operations,
W. H. Edwards, R. C. Dickason
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Form effect and hot electron transport

Physics Letters A, 1991
Abstract It is shown that in the case that the heat removal direction is perpendicular to that of the current, the geometrical form of one-temperature semiconductors may have a considerable effect on hot electron transport.
F.G. Bass, A.I. Vasker
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Powder metallurgy materials in hot forming

Powder Metallurgy, 2007
The purpose of the present paper is to determine the apparent yield stress of powder metallurgy (PM) materials at high temperatures. A brief introduction concerning the theory of yielding of PM materials is included. The models of loading functions for porous materials are recalled.
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Medium-Mn steels for hot forming application in the automotive industry

International Journal of Minerals, Metallurgy and Materials, 2021
Haiwen Luo
exaly  

Hot formed NdFeB magnets

2022
Yutaka Yoshida, Norio Yoshikawa
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