Results 81 to 90 of about 251,961 (205)

Microstructure Evolution and Material Flow of Steel in Semi-solid Forming Process [PDF]

open access: yes, 2011
The present study aims to identify and characterize the development of microstructure and deformation characteristics of steel grades in semi-solid state which is affected by the change in morphologies of microstructure at high temperature ...
BECKER, Eric   +4 more
core   +2 more sources

Wear behavior of contacting between thin film coating on SKD11 ball and 304 stainless steel disk [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2007
Wear is a well known problem in metal stamping die, especially on the die working with stainless steel workpiece, in which wear rate is severe. This research considered various types of material coating on tool surface which were regularly practised in ...
Sriprasird, J.   +3 more
doaj  

3D FEM simulations of the rolling of stator vanes, including tool deformation [PDF]

open access: yes, 2002
Tool deformation is an important issue in the shape rolling of stator vanes as it directly influences the thickness of the rolled vane. This means that for the design of an accurate production process the deformation of the tools has to be accounted for.
Huetink, J., Wisselink, H.H.
core   +1 more source

Optimisation of post-drawing treatments by means of neutron diffraction

open access: yes, 2008
The mechanical properties and the durability of cold-drawn eutectoid wires (especially in aggressive environments) are influenced by the residual stresses generated during the drawing process.
Atienza   +28 more
core   +1 more source

Non-linear model-predictive-control for thermomechanical ring rolling [PDF]

open access: yes, 2019
he authors present a new ring rolling variant that combines a semi-warm forming process of a bearing ring with controlled cooling directly followed by a cold forming process.
Brosius, Alexander   +2 more
core  

Tensile and Fatigue Performance of Cold-Work Tool Steels for Adjustable Forming Tools

open access: yesApplied Sciences
Forming tools adjustable by tensile elastic deformations offer opportunities for improved process control and reduced wear in high-volume metal forming processes such as ironing. However, the lack of tensile and fatigue data for hardened cold-work tool steels limits their broader adoption.
Kaarel Siimut   +3 more
openaire   +2 more sources

Computer-aided analysis and design of the shape rolling process for producing turbine engine airfoils [PDF]

open access: yes
Mild steel (AISI 1018) was selected as model cold-rolling material and Ti-6Al-4V and INCONEL 718 were selected as typical hot-rolling and cold-rolling alloys, respectively.
Akgerman, N., Altan, T., Lahoti, G. D.
core   +1 more source

Optimization of End Mill Geometry for Machining 1.2379 Cold-Work Tool Steel Through Hybrid RSM-ANN-GA Coupled FEA Approach

open access: yesMachines
Optimizing end mill geometry is critical for improving performance and reducing costs in the high-volume manufacturing of tools, dies and molds. This study demonstrates a successful optimization framework for solid end mills machining 1.2379 cold-work ...
Tolga Berkay Şirin   +6 more
doaj   +1 more source

Calibration System with Cryogenically-Cooled Loads for CMB Polarization Detectors

open access: yes, 2011
We present a novel system to calibrate millimeter-wave polarimeters for CMB polarization measurements. This technique is an extension of the conventional metal mirror rotation approach, however it employs cryogenically-cooled blackbody absorbers.
Chinone, Y.   +5 more
core   +1 more source

Cold molecular welding study in ultra-high vacuum Final report, 8 Oct. 1964 - 17 Dec. 1965 [PDF]

open access: yes
Cold molecular welding in ultrahigh vacuum of metals for use in Apollo ...
Bossert, J., Moeller, C. E., Noland, M.
core   +1 more source

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