Influence of Strain Hardening on the Force in Cold Strip Rolling

Baranov, G. L.

doi:10.3103/s0967091218110025

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…Cold rolling is characterized by low interfacial friction and angle of bite less than 8 degrees. These facts are in consent with the application of strip theory for the metal stress analysis [2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Research on the influence of the strip tension on contact stress and cold rolling force with a strain-hardening

Ilin

Baranov

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The influence of strip tension on contact stress and cold rolling force with strainhardening has been investigated by using a numerical method. Dependences between roll pressure and strip tension for one rolling case have been studied. A comparison of the results provided by an introduced method to the already known methods allowed measurements of inaccuracy when the arc of contact has been replaced by chord and whenthe yield strength value for each step has been replaced by the average value of yield strength. Approaching to the real shape of the deformation zone and step-by-step calculations of strain-hardening increases magnitudes of average normal stress and rolling force. The highest difference between obtained results in comparison with the introduced method and already known methods reaches the largest value in the case with intensely hardening steels without strip tension. The increase of strip tension shows less difference between methods. The introduced method lets to calculate the rolling force for different metals depending on strip tension with more precision. Obtained results of the numerical analysis of the influence strip tension on the average normal stress and rolling force were summarized in the form of functions convenient for engineering calculations, with inaccuracy less than 5%.

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Section: Introductionmentioning

confidence: 99%

“…When average normal stress is defined by equations ( 1)-( 3) and ( 5)-( 6), and metal hardening has been taken into account via the average value of pure shear stress and the arc of contact replaced by chord, which may lead to imprecision [10].…”

Section: Introductionmentioning

confidence: 99%

Research on the influence of the strip tension on contact stress and cold rolling force with a strain-hardening

Ilin

Baranov

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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“…A number of articles connected with identification of neutral section dimensions and position can be distinguished [23][24][25][26][27][28] among studies dedicated to strip rolling processes,. Neutral line dimensions and position detection is, definitely, important objective because neutral angle is one of the key parameters while estimation of deformation zone parameters at rolling [29].…”

Section: Introductionmentioning

confidence: 99%

Comparative evaluation of the kinematic parameters at symmetric and asymmetric cold rolling of strip using computer simulation

Кожевников¹,

Skripalenko²,

Кожевникова³

et al. 2023

cisisr

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Computer simulation of symmetric and asymmetriс cold rolling of AISI-1008 steel strip in three passes was carried out. DEFORM finite element method (FEM) software was used for computer simulation. Technique allowing neutral line location determination was designed and this technique is based on the processing of FEM computer simulation results. Neutral line location during each of three passes at different working roll diameters combinations (symmetric rolling, rolling with 0.83 %, 1.67 % and 5 % working rolls diameters asymmetry) was detected using designed technique. It was established that working rolls diameters asymmetry increase till 5 % moves the middle of the neutral line towards rolling direction in 0.250 mm for the first pass, 0.199 mm -for the second pass, 0.133 mm -for the third pass. That is, influence of working rolls diameters asymmetry increase becomes weaker with the decrease of absolute value of height reduction. Three-dimensional graphs were made: one is illustrating dependence of position of the neutral line's midpoint from rolling speed and working rolls diameters asymmetry and the other one is illustrating dependence of the neutral line inclination angle from rolling speed and working rolls diameters asymmetry. Weak direct correlation between working rolls diameters asymmetry and position of neutral line's middle point and strong direct correlation between rolling speed and position of neutral line's middle point were detected. Velocity diagrams along vertical lines in lag zone and lead zone of the deformation zone at asymmetric rolling show that velocity at point of contact of upper roll and strip is less than velocity at point of contact of lower roll and strip.

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Influence of Nonuniform Deformation on the Contact-Stress Distribution in Strip Rolling

Baranov

2019

Steel Transl.

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Influence of Strain Hardening on the Force in Cold Strip Rolling

Cited by 4 publications

References 1 publication

Research on the influence of the strip tension on contact stress and cold rolling force with a strain-hardening

Research on the influence of the strip tension on contact stress and cold rolling force with a strain-hardening

Comparative evaluation of the kinematic parameters at symmetric and asymmetric cold rolling of strip using computer simulation

Influence of Nonuniform Deformation on the Contact-Stress Distribution in Strip Rolling

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