Bendability Analysis for Bending of C-Mn Steel Plates on Heavy Duty 3-Roller Bending Machine
Bendability is constrained by maximum top roller
load imparting capacity of the machine. Maximum load is
encountered during the edge pre-bending stage of roller bending.
Capacity of 3-roller plate bending machine is specified by
maximum thickness and minimum shell diameter combinations that
can be pre-bend for given plate material of maximum width.
Commercially available plate width or width of the plate that can be
accommodated on machine decides the maximum rolling width.
Original equipment manufacturers (OEM) provide the machine
capacity chart based on reference material considering perfectly
plastic material model. Reported work shows the bendability analysis
of heavy duty 3-roller plate bending machine. The input variables for
the industry are plate thickness, shell diameter and material property
parameters, as it is fixed by the design. Analytical models of
equivalent thickness, equivalent width and maximum width based on
power law material model were derived to study the bendability.
Equation of maximum width provides bendability for designed
configuration i.e. material property, shell diameter and thickness
combinations within the machine limitations. Equivalent thicknesses
based on perfectly plastic and power law material model were
compared for four different materials grades of C-Mn steel in order
to predict the bend-ability. Effect of top roller offset on the
bendability at maximum top roller load imparting capacity is
reported.
[1] M. B. Bassett, and W. Johnson, "The bending of plate using a three roll
pyramid type plate bending machine," J. strain Analysis, vol. 1, no. 5,
pp. 398, 1996.
[2] N. E. Hanson, and O. Jannerup, "Modeling of elastic plastic bending of
beams using a roller bending machine," ASME Papers No. 78wa/Prod 6,
1979.
[3] M. Hua, D. H. Sansome, and K. Baines, "Mathematical modeling of the
internal bending moment at the top roller contact in multipass four roll
thin plate bending," J. mater. Process. Technol., vol. 52, pp. 425-459,
1995.
[4] M. Hua, K.Bainesb, and, I.M. Cole, "Continuious four roll plate
bending: a production process for the manufacture of single seamed
tubes of large and medium diameters," Int J. Mach.Tools Manuf., vol.
36, pp. 905-935, 1999.
[5] Weilong Hu, and Z.R. Wang, "Theoretical analysis and experimental
study to support the development of a more valuable roll-bending
process," Int J. Mach.Tools Manuf., vol. 41, pp. 731-747, 2001.
[6] V. Ramamurti, V. Ravi Sankar Rao and, N. S. Sriram, "Design aspects
and parametric study of 3-roll heavy duty plate bending machines," J.
mater. Process. Technol., vol. 32, pp. 585-598, 1992.
[7] J. L Dunkun. and Z. Marciniak, Mechanics of sheet metal forming,
Adward Arnold Publication, 1992, pp. 68-77
[8] Process manual, maintenance manual, machine capacity chart and
technical specification of rolling machine, M/s Larsem & Toubro ltd,
Hazira, Surat, India.
[9] G. H. Ryder, Strength of Material, English language book society /
Macmillan, 1969, pp. 71-85.
[10] A. I. Tselikov and V. V. Smirnov, Rolling Mills, Pergamon press, 1965.
[11] ASME sec II part A, Ferrous material specification, 2004 edition.
[1] M. B. Bassett, and W. Johnson, "The bending of plate using a three roll
pyramid type plate bending machine," J. strain Analysis, vol. 1, no. 5,
pp. 398, 1996.
[2] N. E. Hanson, and O. Jannerup, "Modeling of elastic plastic bending of
beams using a roller bending machine," ASME Papers No. 78wa/Prod 6,
1979.
[3] M. Hua, D. H. Sansome, and K. Baines, "Mathematical modeling of the
internal bending moment at the top roller contact in multipass four roll
thin plate bending," J. mater. Process. Technol., vol. 52, pp. 425-459,
1995.
[4] M. Hua, K.Bainesb, and, I.M. Cole, "Continuious four roll plate
bending: a production process for the manufacture of single seamed
tubes of large and medium diameters," Int J. Mach.Tools Manuf., vol.
36, pp. 905-935, 1999.
[5] Weilong Hu, and Z.R. Wang, "Theoretical analysis and experimental
study to support the development of a more valuable roll-bending
process," Int J. Mach.Tools Manuf., vol. 41, pp. 731-747, 2001.
[6] V. Ramamurti, V. Ravi Sankar Rao and, N. S. Sriram, "Design aspects
and parametric study of 3-roll heavy duty plate bending machines," J.
mater. Process. Technol., vol. 32, pp. 585-598, 1992.
[7] J. L Dunkun. and Z. Marciniak, Mechanics of sheet metal forming,
Adward Arnold Publication, 1992, pp. 68-77
[8] Process manual, maintenance manual, machine capacity chart and
technical specification of rolling machine, M/s Larsem & Toubro ltd,
Hazira, Surat, India.
[9] G. H. Ryder, Strength of Material, English language book society /
Macmillan, 1969, pp. 71-85.
[10] A. I. Tselikov and V. V. Smirnov, Rolling Mills, Pergamon press, 1965.
[11] ASME sec II part A, Ferrous material specification, 2004 edition.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:54723", author = "Himanshu V. Gajjar and Anish H. Gandhi and Tanvir A Jafri and Harit K. Raval", title = "Bendability Analysis for Bending of C-Mn Steel Plates on Heavy Duty 3-Roller Bending Machine", abstract = "Bendability is constrained by maximum top roller
load imparting capacity of the machine. Maximum load is
encountered during the edge pre-bending stage of roller bending.
Capacity of 3-roller plate bending machine is specified by
maximum thickness and minimum shell diameter combinations that
can be pre-bend for given plate material of maximum width.
Commercially available plate width or width of the plate that can be
accommodated on machine decides the maximum rolling width.
Original equipment manufacturers (OEM) provide the machine
capacity chart based on reference material considering perfectly
plastic material model. Reported work shows the bendability analysis
of heavy duty 3-roller plate bending machine. The input variables for
the industry are plate thickness, shell diameter and material property
parameters, as it is fixed by the design. Analytical models of
equivalent thickness, equivalent width and maximum width based on
power law material model were derived to study the bendability.
Equation of maximum width provides bendability for designed
configuration i.e. material property, shell diameter and thickness
combinations within the machine limitations. Equivalent thicknesses
based on perfectly plastic and power law material model were
compared for four different materials grades of C-Mn steel in order
to predict the bend-ability. Effect of top roller offset on the
bendability at maximum top roller load imparting capacity is
reported.", keywords = "3-Roller bending, Bendability, Equivalent thickness,Equivalent width, Maximum width.", volume = "1", number = "8", pages = "390-6", }