Results 251 to 260 of about 808,635 (307)
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ICALEO 2015: 34th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, 2015
Hot formed steel is the most successful method in the last few years to reduce weight, save cost and increase safety in the automotive industry. It is still gaining importance for automotive body parts because of its advantageous material properties. Especially its high strength of about 1500MPa makes it possible to manufacture structural parts like B ...
Thomas Harrer +2 more
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Hot formed steel is the most successful method in the last few years to reduce weight, save cost and increase safety in the automotive industry. It is still gaining importance for automotive body parts because of its advantageous material properties. Especially its high strength of about 1500MPa makes it possible to manufacture structural parts like B ...
Thomas Harrer +2 more
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2012
In the direct hot forming process, a blank is heated up in a furnace, transferred to the press and subsequently formed and quenched in the closed mold [1] (Fig. 3.1). First the sheet is uncoiled and cut according to the shape of the product, then the blank is transferred to a continuous furnace, in which it is heated and fully austenitized.
Ping Hu +3 more
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In the direct hot forming process, a blank is heated up in a furnace, transferred to the press and subsequently formed and quenched in the closed mold [1] (Fig. 3.1). First the sheet is uncoiled and cut according to the shape of the product, then the blank is transferred to a continuous furnace, in which it is heated and fully austenitized.
Ping Hu +3 more
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2018
Tube forming is used to manufacture hollow geometries, otherwise would be stamped and welded. Automotive components could be produced by simply bending and preforming of tubular blanks; or by tube hydroforming (THF). Until recently, THF was limited to aluminum alloys and steels up to 1000 MPa tensile strength.
Eren Billur, Frank Schieck
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Tube forming is used to manufacture hollow geometries, otherwise would be stamped and welded. Automotive components could be produced by simply bending and preforming of tubular blanks; or by tube hydroforming (THF). Until recently, THF was limited to aluminum alloys and steels up to 1000 MPa tensile strength.
Eren Billur, Frank Schieck
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Failures Related to Hot Forming Processes
2021Abstract The primary purpose of this article is to describe general root causes of failure that are associated with wrought metals and metalworking. This includes a brief review of the discontinuities or imperfections that may be common sources of failure-inducing defects in the bulk working of wrought products. The article addresses the
Dick Douglas +2 more
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Hot forming of dolomite briquettes
Ceramics International, 1980Abstract Results of experiments to study the production of dolomite clinker having a density close to the theoretical density of pure sintered dolomite are discussed. Density values are reported for samples obtained by the following process: decarbonization of dolomite, hot briquetting at 300–700°C, firing the semi-product at 1500°C.
W. Piatkowski, B. Rózanowski
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Journal of Materials Processing Technology, 1992
Abstract This paper reviews die forging in Germany, discussing: the development of die forgings, cold forgings and warm forgings; the development of machines for massive forming and of their automation, flexibilization and control; the requirements of such machines, in particular considering their stiffness requirements and presenting the stiffness ...
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Abstract This paper reviews die forging in Germany, discussing: the development of die forgings, cold forgings and warm forgings; the development of machines for massive forming and of their automation, flexibilization and control; the requirements of such machines, in particular considering their stiffness requirements and presenting the stiffness ...
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Tribology of hot metal forming
Tribology International, 1998Many aspects of the tribology of hot metal forming are poorly understood. This leads to difficulties when modelling the forming operations to develop process improvements. It also handicaps the development of new tool materials, since the operating conditions with which they will have to cope are not fully described.
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Numerical modelling of hot forming processes
International Journal of Microstructure and Materials Properties, 2008In this paper, first, the state of the art of numerical modelling in hot forming processes will be overviewed. Then the paper briefly reviews the theoretical background of metal forming simulation, including the basic constitutive equations, and the information flow in process modelling.
Tisza, Miklós, Gál, G., Lukács, Zsolt
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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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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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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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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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