Finite Element Modeling of Influence of Roll Form of Vertical Scale Breaker on Decreased Formation of Surface Defects during Roughing Hot Rolling

2016 ◽  
Vol 685 ◽  
pp. 181-185
Author(s):  
Alexander Pesin ◽  
Denis Pustovoytov
Keyword(s):  
Finite Element ◽  
Hot Rolling ◽  
Surface Defects ◽  
Rolling Process ◽  
Surface Cracking ◽  
Critical Areas ◽  
Steel Strips ◽  
Vertical Scale ◽  
Steel Consumption ◽  
Deformation Behaviors

During production of rolled steel strips the quality of the surface of finished strips influences steel consumption considerably. The most critical areas for crack formation during rolling are lateral sides of slabs. Deformation behaviors of the slab edge in roughing rolling process were analyzed by the finite element method with Deform-3D. In this study our focus is the analysis of the influence of edger’s form on the possibility to decrease surface cracking during roughing hot rolling.

Finite Element Analysis of Transient Thermal Problems of Work Rolls in Hot Rolling Process

1999 ◽  
Author(s):  
James D. Lee ◽  
Majid T. Manzari ◽  
Yin-Lin Shen ◽  
Wenjun Zeng
Keyword(s):  
Finite Element ◽  
Hot Rolling ◽  
Three Dimensional ◽  
Thermal Characteristics ◽  
Rolling Process ◽  
Thermal Problem ◽  
Element Analysis ◽  
Hot Rolling Process ◽  
Transient Thermal ◽  
Work Rolls

Abstract The three-dimensional transient thermal problem of work rolls in the entire hot rolling process has been formulated. It includes the time-varying boundary conditions specified at the roll surface taking the schedule of both rolling and idling cycles into consideration. The corresponding finite element equations are derived and solved by the Runge-Kutta-Verner method. The finite element solutions indicate that the temperature variations in the circumferential direction are overwhelming. Case studies unveil the thermal characteristics of the work rolls in various kinds of mill operations. Numerical results are presented and compared with Guo’s analytical solutions.

scholarly journals Chemical- and Mechanical-Induced Lubrication Mechanisms during Hot Rolling of Titanium Alloys Using a Mixed Graphene-Incorporating Lubricant

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 665
Author(s):  
Ning Kong ◽  
Jiaming Zhang ◽  
Jie Zhang ◽  
Hongbo Li ◽  
Boyu Wei ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Hot Rolling ◽  
Friction And Wear ◽  
Surface Defects ◽  
Rolling Process ◽  
Nano Particles ◽  
X Ray ◽  
Lubricating Film ◽  
Lubrication Performance ◽  
Combustion Loss

Hot rolling of titanium alloy currently is carried out without lubrication because of the surface defects. In order to explore an effective lubrication scheme to reduce friction and wear during hot rolling of titanium alloy, a mixed graphene-incorporating lubricant has been proposed to study its lubrication performance and mechanism. The tribological experiments were carried out by ball-disk friction and wear tester under hot-rolling parameters. Scanning electron microscopy (SEM), X-ray energy spectrum analyzer (EDS), X-ray powder diffractometer (XRD) and Raman analysis were used to analyse the surface and cross-section of the wear marks on the samples after the tribological experiments. The results show that the friction coefficient decreases up to about 35% compared with tests under dry and lubricated conditions. The surface quality of the wear marks is improved significantly after applying the proposed lubricant. The graphene which is embedded in the phosphate film can be effectively applied as a lubricating material to strengthen the lubricating film with less combustion loss at high temperatures. A chemical- and mechanical-induced lubrication mechanism for the hot rolling of titanium sheets has been proposed due to the synergistic lubrication effect of the graphene, ZrO2 nano particles and phosphate. It is of great significance and potential value to apply this proposed lubricant as an effective way to reduce the wear, friction and oxidation during the hot-rolling process of titanium alloy.

Aluminum Hot Finishing Rolling Process Parameters on the Effect of Temperature Field Distribution

2011 ◽  
Vol 103 ◽  
pp. 442-446
Author(s):  
Zhuo Fu ◽  
Yi Lun Liu ◽  
Xue Liu
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Field Distribution ◽  
Process Parameters ◽  
Hot Rolling ◽  
Rolling Process ◽  
Effect Of Temperature ◽  
Technological Parameters ◽  
Temperature Field Distribution ◽  
Actual Structure

According to actual structure parameters and the technological parameters in an aluminum hot rolling production line, consider the rolling of metal plastic deformation heat, the contact surface heat conductivity, friction heat effect on the rolled piece and the roller heat transfer, use finite element analysis software MSC.Marc to build thermo-mechanical coupled finite element simulation model about aluminum hot rolling frame F2. Analyzing different rolling process parameters on the influence of the temperature field distribution regularity, and by adjusting the rolled-piece technology parameters to control temperature distribution, so as to achieve the purpose of improving product quality, and to provide theoretical basis for production of aluminum strip.

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