Through-thickness shear strain control in cold rolled silicon steel by the coupling effect of roll gap geometry and friction

2010 ◽  
Vol 210 (12) ◽  
pp. 1545-1550 ◽  
Author(s):  
H.P. Yang ◽  
Y.H. Sha ◽  
F. Zhang ◽  
L. Zuo
Keyword(s):  
Shear Strain ◽  
Coupling Effect ◽  
Silicon Steel ◽  
Strain Control ◽  
Cold Rolled ◽  
Roll Gap ◽  
Thickness Shear

Through-Thickness Shear Strain in Silicon Steel under Asymmetric Rolling

2011 ◽  
Vol 702-703 ◽  
pp. 762-765
Author(s):  
H.P. Yang ◽  
Yu Hui Sha ◽  
Fang Zhang ◽  
Wei Pei ◽  
Liang Zuo
Keyword(s):  
Shear Strain ◽  
Strain Distribution ◽  
Sheet Thickness ◽  
Silicon Steel ◽  
Strain Variation ◽  
Asymmetric Rolling ◽  
Roll Pressure ◽  
Cold Rolled ◽  
Thickness Shear ◽  
Differential Speed

Through-thickness shear strain variation with speed/radius/friction ratio in cold rolled silicon steel under different asymmetric rolling modes was analyzed by finite element method (FEM). Cold rolling textures were also investigated quantitatively to correlate with the calculated shear strain. With increasing speed/radius/friction ratio, shear strain distribution under differential-speed and differential-radius rolling exhibits similar characteristic in contrast to differential-friction rolling. Unidirectional shear strain develops through sheet thickness when asymmetric speed and radius ratio exceeds 1.125, whereas it does not appear even at friction ratio of 1.5. Shear strain distribution dependent on asymmetric rolling modes can be well understood by forward and backward slip zones as well as roll pressure as a function of speed/radius/friction ratio.

Effect of Hot-Rolled Microstructure on the Recrystallization Texture of Cold-Rolled Non-Oriented Electrical Steel

2011 ◽  
Vol 298 ◽  
pp. 203-208 ◽  
Author(s):  
Zi Li Jin ◽  
Wei Li ◽  
Yi Ming Li
Keyword(s):  
Cold Rolling ◽  
Electrical Steel ◽  
Texture Evolution ◽  
Steel Strip ◽  
Silicon Steel ◽  
Grain Structure ◽  
Recrystallization Annealing ◽  
Rolled Sheet ◽  
Cold Rolled ◽  
Hot Rolled

With the help of orientation distribution function (ODF) analysis, experiments of different hot band grain microstructure 0.33% silicon steel were cold-rolled and annealed in the laboratory，to study the effect of the microstructure hot-rolled steel strip for cold rolled non-oriented silicon steel microstructure and texture of recrystallization annealing. The results show that hot rolled microstructure on cold rolled Non-Oriented Electrical Steel cold-rolled sheet evolution of texture and recrystallization have important influence, the quiaxed grain structure of steel by cold rolling and recrystallization annealing, the recrystallization speed than the fiber grain-based mixed crystals recrystallization fast , With the equiaxed grains made of cold rolled silicon steel after annealing the {110}<UVW> texture components was enhanced and {100}<uwv> texture components weakened. Different microstructure condition prior to cold rolling in the recrystallization annealing process the texture evolution has the obvious difference, the equiaxial grain steel belt cold rolling and annealing, has the strong crystal orientation. This shows that the equiaxed grain when hot microstructure is detrimental to the magnetic properties of cold-rolled non-oriented silicon steel to improve and increase.

scholarly journals Properties of NGO 3% Silicon Steel Asymmetrically Cold Rolled

2015 ◽  
Vol 18 (suppl 2) ◽  
pp. 143-147 ◽  
Author(s):  
Ramon Alves Botelho ◽  
Saulo Brinco Diniz ◽  
Marco Antonio da Cunha ◽  
Luiz Paulo Brandao
Keyword(s):  
Silicon Steel ◽  
Cold Rolled

scholarly journals A Study on the Anisotropy of Cold-rolled Silicon Steel (First Report)

1949 ◽  
Vol 13 (12) ◽  
pp. 9-12 ◽  
Author(s):  
Isao Gokyu ◽  
Hideo Abe ◽  
Hisashi Takahashi
Keyword(s):  
Silicon Steel ◽  
First Report ◽  
Cold Rolled

Effect of Normalization Process on the Microstructure and Properties of Annealed Cold-Rolled Sheet of Oriented Silicon Steel

2016 ◽  
Vol 873 ◽  
pp. 43-46
Author(s):  
Tao Xiong ◽  
Gang Zhao ◽  
Jian Wen Gao
Keyword(s):  
Grain Boundaries ◽  
Silicon Content ◽  
Silicon Steel ◽  
Rolled Sheet ◽  
High Angle ◽  
Percentage Content ◽  
Ebsd Data ◽  
Cold Rolled ◽  
Goss Orientation ◽  
Normalization Process

Research object of this article is a type of oriented silicon steel in 3.07% silicon content. By comparing samples under normalization and non-normalization respectively after primary recrystallizing annealing and secondary recrystallizing annealing, we have figured out how normalization influenced the recrystallizing behavior. The EBSD data of samples showed that normalization can half the grain size after primary recrystallizing, raise the percentage content of favored grain boundaries and high-angle grain boundaries, increase the content of Goss orientation grains by 5 times. And normalization coarsens the secondary recrystallizing grains, triples the magnetic induction and reduces the iron loss by half.

Survival of Goss Grains during Cold Rolling of a Silicon Steel Single Crystal

2005 ◽  
Vol 495-497 ◽  
pp. 1061-1066 ◽  
Author(s):  
Dorothée Dorner ◽  
Ludger Lahn ◽  
Stefan Zaefferer
Keyword(s):  
Cold Rolling ◽  
Single Crystal ◽  
High Strain ◽  
Shear Bands ◽  
Rolling Process ◽  
Silicon Steel ◽  
Oriented Crystal ◽  
Cold Rolled ◽  
Goss Orientation ◽  
Crystal Volume

A silicon steel single crystal with initial Goss orientation, i.e. the {110}<001> orientation, was cold rolled up to 89 % thickness reduction. Most of the crystal volume rotates into the two symmetrical equivalent {111}<112> orientations. However, a weak Goss component is still present after high strain, although the Goss orientation is mechanically instable under plane strain loading. Two types of Goss-oriented crystal volumes are found in the highly deformed material. We suggest that their origin is different. The Goss-oriented regions that are observed within shear bands form during the cold rolling process. In contrast, those Goss-oriented crystal volumes that are found inside of microbands survive the cold rolling.

Measurement of the shear properties of clear wood by the Arcan test

Holzforschung ◽  
2009 ◽  
Vol 63 (2) ◽  
Author(s):  
José Xavier ◽  
Marcelo Oliveira ◽  
José Morais ◽  
Tiago Pinto
Keyword(s):  
Shear Strain ◽  
Ad Hoc ◽  
Test Method ◽  
Accurate Estimation ◽  
Correction Factors ◽  
Clear Wood ◽  
Shear Properties ◽  
Shear Moduli ◽  
Gauge Section ◽  
Thickness Shear

Abstract In this work, the identification of the shear properties of maritime pine (Pinus pinaster Ait.) wood was investigated by applying the Arcan test method. For this purpose, an ad hoc Arcan fixture was designed for which clear wood samples could be tested along all the material planes of symmetry – LR, LT and RT planes. For the accurate evaluation of the shear moduli, correction factors taking into account the non-uniformity of the shear stress and the shear strain distributions at the gauge section were determined with finite element analyses. Experimentally, two 0/90 rosettes were glued on both frontal and back surfaces of the specimens in order to take into account any through-to-thickness shear strain variation. It was found that the Arcan test is suitable for the identification of the shear moduli of wood in all its natural planes. The failure of the Arcan specimens systematically occurred under a concentrated stress state nearby the V-notches. Nevertheless, it was shown that an accurate estimation of the shear strengths of wood can be achieved by the Arcan test.

Numerical Simulation and Analysis for Blow-Off Flow Field of a Wet Skin Pass Mill

2014 ◽  
Vol 597 ◽  
pp. 238-241
Author(s):  
Hai Jun Qiao ◽  
Dian Rong Gao
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Flip Angle ◽  
Strip Surface ◽  
Skin Pass ◽  
Cold Rolled ◽  
Finite Element Numerical Simulation ◽  
Air Nozzle ◽  
Roll Gap ◽  
Pass Mill

Blow-off air nozzles blow away the residual emulsion from roll gap and strip surface. Algorithm SIMPLY were used for the finite element numerical simulation for a representational air nozzle blow-off flow field near the roll gap in a cold-rolled skin pass mill. The working conditions of the blow-off flow field was the combination of gas pressure of 0, 2, 5 and 10bar and flip angle of 0°, 5°, 10°, 15°, 20° and 25°. The study provides a reference for control and optimization for the removal process of residual emulsion and design, manufacture, model selection and optimization for the related air nozzles.

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