Zobrazeno 1 - 10
of 89
pro vyhledávání: '"S.M. Byon"'
An approximate model to predict the surface profile of material sections in a 3-roll rolling process
Publikováno v:
Journal of Mechanical Science and Technology. 31:3489-3497
This paper proposes an approximate model to predict the spread and surface profile of cross sections of material in a Kocks mill that a string of mills driven by three-roll is lined-up in tandem. The spread at the exit of roll gap is expressed as a f
Publikováno v:
Transactions of Nonferrous Metals Society of China. 23:742-748
A flow stress equation was proposed to compute the roll force in the finishing stands of an actual rod mill where the strain rate and the temperature of the material range from 100 to 400 s −1 and from 900 to 1050 °C, respectively. The underlying
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. 225:2302-2308
We investigate front end bending (FEB) behaviours of material that usually occur during flat rolling using the shape factor, defined as the ratio of the mean contact length to the mean thickness of a material for a given roll-bite profile (that is, a
Publikováno v:
Transactions of Materials Processing. 20:284-290
The front end bending(FEB) behavior of material that usually occurs in plate rolling is investigated. In this paper, a rollbite profile map approach that systematically predicts the FEB slope is presented. It is based on the concurrent use of shape f
Publikováno v:
Transactions of Nonferrous Metals Society of China. 21:s104-s110
A pilot wire drawing machine as well as wire end-pointing roller was developed. Using these machines, a wire drawing test for four different coating materials and two different lubricants was performed as the reduction ratio increased from 10% to 30%
Publikováno v:
Journal of Mechanical Science and Technology. 23:3374-3384
Steady-state rigid-plastic finite element analysis coupled with strain gradient plasticity theory has been performed to examine the size effect of material on its plastic deformation behavior and find an optimal semi-cone angle of die which minimizes
Publikováno v:
Journal of Materials Processing Technology. 209:4465-4470
We machined work roll with groove worn down as well as groove with no wear. We then performed a pilot hot rod rolling test at temperature of 1000 °C using plain carbon steel (0.1% C) as the roll gap decreases from reference roll gap (6.5 mm) to 3.5
Publikováno v:
International Journal of Modern Physics B. 22:5400-5405
We present a full constitutive relation of silicon steel which can describe the anisotropy effect as well. Using a pilot rolling machine, initial silicon strip with thickness of 2.5mm is rolled into sheet with several thicknesses as reduction ratio i
Publikováno v:
Transactions of Materials Processing. 17:420-428
The effect of loading path changes on the strain and mechanical properties of a commercial pure aluminum was studied using flat rolling and groove rolling. Material during flat rolling undergoes a continuous monotonic compressive loading, while one d
Publikováno v:
Journal of Materials Processing Technology. 205:70-80
Since the surface defect frequently encountered in the hot bar rolling of steel can easily lead to a fatal manufacturing defect during the secondary cold forging process of bar stocks, it is necessary to minimize such a defect on the surface of hot r