Intermediate layers can be formed . The new trends of numerical hot rolling simulation include the Thereby hot deformation processes can be controlled now and managed in order to prevent
DEFECTS SIMULATION OF ROLLING STRIP - The process of rolling have been simulated on the deformation temperatures 1200°C and 900°C, whereas on the both of this deformation temperatures have been applied amount of deformation
Before the strip reaches the intermediate rolling at KV96 it has first been hot rolled in the roughing- and Steckel mill. After the hot process the coil is annealed and pickled before any cold deformation. The first step in the cold process line is pre-rolling in a tandem mill and
Development of nondestructive warm rolling schedules for It is shown that excess over these critical values leads to the fracture of beryllium during both simulation and experimental rolling. Nondestructive conditions are developed for multipass warm rolling of beryllium with the minimum number of long-term intermediate high-temperature annealing.
High Strain Rate Hot Deformation of Steels:Measurement High Strain Rate Hot Deformation of Steels:Measurement and Simulation . By Seth A. Rummel, it improved the materials model for the intermediate and high strain rate ranges. Examples of finite element analysis (FEA) are shown to illustrate the hot rolling process simulation sensitivity to the applied material model Topics:
Feb 01, 2012 · From thermomechanical simulation, step rolling is defined to be suitable at a strain rate of 1 s 1 rate for each step, using intermediate heat treatment at 450 °C for a period of 10 s to 1 h. Generally, the quality of rolled product was improved with improving casting quality.
Modeling of mass flow behavior of hot rolled low alloy Nov 14, 2016 · Accuracy and reliability of numerical simulation of hot rolling processes are dependent on a suitable material model, which describes metal flow behavior. In the present study, Gleeble hot compression tests were carried out at high temperatures up to 1300 °C and varying strain rates for a medium carbon micro-alloyed steel.
Multi-field coupled numerical simulation of microstructure May 01, 2011 · GCr15 steel is rolled from a 150 mm × 150 mm square billet to a rod with the diameter of 15 mm after passing 18-pass. The process consists of three successive rolling stages, roughing rolling, intermediate rolling and finishing rolling, and Fig. 1 shows the layout of rolling mills in Dongbei Special Steel Group, China. Based on the commercial FE software MSC.Marc, a 3-D FE model is developed
The rolling process is a multi-step hot-forming process, so the challenge is to model succession of the forming steps tracing the whole deformation history of the workpiece. This requires fast and accurate modelling tools. Thus, the objective is to evaluate an alternative numerical approach to simulation of the shape-rolling process.
Numerical Simulation of Wire-Rod Hot Continuous Rolling High speed wire-rod rolling is a typical large deformation process which includes geometry, material and boundary condition non-linearity, thus it belongs to a highly nonlinear problem. The finite element models of the billet and the rollers in the intermediate rolling region had been established based on actual sizes by using 3-D thermo-mechanical coupling FEM and advanced contact analysis
Physical simulation of hot deformation and microstructural Direct quenching and tempering (DQ-T) of hot rolled steel section has been widely used in steel mill for the sake of improvement of mechanical properties and energy saving. Temperature history and microstructural evolution during hot rolling plays a major role in the properties of direct quenched and tempered products. The mathematical and physical modeling of hot forming processes is becoming
The simulation model of hot rolling coupling was established using finite element method base on studying and analyzing of universal rolling method for H-beam. The distribution of temperature field and stress field in contact area as the main research subjects during hot rolling under the given rolling regulations of H-beam, the whole process of hot rolling was completely simulated.
Simulation of Mechanics Properties in Rolling Process for The simulation model of hot rolling coupling was established using finite element method base on studying and analyzing of universal rolling method for H-beam. The distribution of temperature field and stress field in contact area as the main research subjects during hot rolling under the given rolling regulations of H-beam, the whole process of hot rolling was completely simulated.
Simulation of Texture Evolution during Hot Rolling The evolution of hot rolling texture in FCC materials has been simulated numerically using a visco-plastic self-consistent (VPSC) polycrystal model. A finite element (FE) analysis with ABAQUS/StandardTM was conducted to evaluate the deformation gradients during hot rolling deformation. In order to capture crystallographic rotation during hot rolling deformation, an
2.4. Challenges in Developing an Off-line Rolling Model 7 2.5. Rod and Bar Rolling Simulation Codes used by the Overseas Steel Industry 9 3. Theoretical and Empirical Geometric and Deformation Models for Steel Rod and Bar Round-Oval, Oval-Round Pass Rolling 12 3.1. Overview 12 3.2. Spread and Cross-sectional Area 12 3.3.
Texture simulation of a severely cold rolled low carbon During the deformation of low carbon steel by cold-rolling, dislocations are created and stored in grains depending on local crystallographic orientation, deformation, and deformation gradient. Orientation dependent dislocation densities have been estimated from the broadening of X-ray diffraction lines measured on a synchrotron beamline.
a Numerical Simulation of Strip Profile in a 6-HIGH Cold Shape control is always a key issue in the six-high rolling mill, in which the shifting of the intermediate roll and the work roll have been used to enhance the shape control capability. In this paper, a finite element method (FEM) model has been developed to simultaneously simulate the strip deformation and the roll stack deformation for the six-high rolling mill.