Thermal stress evaluation in the steel continuous casting process

Risso, José; Huespe, Alfredo Edmundo; Cardona, Alberto

doi:10.1002/nme.1490

Cited by 47 publications

(41 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, many efforts have been conducted by developing mathematical models to calculate the shrinkage of solidifying shell in mold with/without the consideration of the mold wall distortion in past decades, and several types of square billet and round billet mold tapers have been proposed and applied in practical continuous casting. 1,6,7,[12][13][14][15][16][17][18]22) However, less attention [2][3][4][5][8][9][10][11][19][20][21] has been paid to the optimization of slab continuous casting mold taper despite numerous studies [23][24][25][26][27][28][29][30] of shell thermo-mechanical behavior in slab mold have been conducted. Currently, most of the practical slab continuous casting molds adopt the conventional mold taper of linear constant narrow face with ignoring the wide face structures since slab continuous casting is characterized the large ratio of width/thickness.…”

Section: Introductionmentioning

confidence: 99%

Thermo-mechanical Behavior of Peritectic Steel Solidifying in Slab Continuous Casting Mold and A New Mold Taper Design

Cai¹,

Zhu²

2013

ISIJ Int.

View full text Add to dashboard Cite

Based on the descriptions of the thermal and mechanical behaviors of one peritectic steel solidifying in slab continuous casting mold, including shell shrinkage and deformation, air gap formation and mold flux film distribution in shell/mold gap, and shell temperature profile under the conventional mold taper by a two dimensional transient thermo-mechanical coupled finite element model, a new slab mold taper with non-linear slope narrow face and wedge-shape structures both for the wide and narrow faces corners was presented. The thermo-mechanical behaviors of solidifying shell and the applied effectiveness of improving shell subsurface cracks and reducing the wear of mold copper plate with the new mold taper were discussed. The results show that the mold walls of both wide and narrow faces match the shell shrinkage well under the new mold taper, and both the thicknesses and the distributions of air gap and mold flux film in the gap around shell corner and off-corners are greatly reduced. The shell grows uniformly in the mold. Moreover, the subsurface cracks both in the off-corners of slab wide and narrow faces, as well as the wear of the mold copper plate are also reduced significantly. The working life of the mold is greatly prolonged.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermo-mechanical Behavior of Peritectic Steel Solidifying in Slab Continuous Casting Mold and A New Mold Taper Design

Cai¹,

Zhu²

2013

ISIJ Int.

View full text Add to dashboard Cite

show abstract

“…The thermal strains which dominate thermomechanical behavior during solidification are on the order of only a few percent. Several previous solidification models [23] confirm that the solidified metal part indeed undergoes only small deformation during solidification. The displacement spatial gradient is small ∇u=∂u/∂x so ∇u:∇u≈1, and the linearized strain tensor becomes the following [24]:…”

Section: Mathematical Analysismentioning

confidence: 59%

Laser treatment of aluminum composite and investigation of thermal stress field

Yilbaş

Akhtar

Karataş

et al. 2016

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Laser surface melting of hot pressed aluminum composite tile, consisting of 90 % aluminum and 10 % WC, is carried out. Temperature and stress fields developed in the laser-treated region are modeled and predicted using ABAQUS finite element code in line with the experimental conditions. The spiral motion of the laser beam is incorporated at the surface during the laser scanning. This arrangement provides self-annealing effect on the initially formed laser scanning tracks through heat conduction from the lately formed laser scanning tracks. Surface temperature predictions are validated through the thermocouple data. Morphological and metallurgical changes in the laser-treated layer are examined using optical and electron scanning microscopes. It is found that the cooling rates in the central region of the workpiece remain low because of the self-annealing effect of the lately formed laser scanning tracks. This, in turn, lowers von Mises stress levels in this region. Stress peaks are formed below the surface because of the high thermal strain formed in this region during the cooling cycle. The spiral scanning of the laser beam causes oscillating stress levels in the surface region of the laser-treated layer; in which case, its amplitude reduces with the progressing time. Laser-treated layer is free from cracks and crack networks, which is associated with the self-annealing effect of the lately formed laser scanning tracks.

show abstract

“…The thermal strains which dominate thermo-mechanical behavior during solidification are on the order of only a few percent. Several previous solidification models [21] confirm that the solidified metal part indeed undergoes only small deformation during solidification. The displacement spatial gradient is smallru ¼ @u=@x so ru : ru % 1 and the linearized strain tensor becomes [22]:…”

Section: Introductionmentioning

confidence: 59%

Laser hole cutting into Ti-6Al-4V alloy and thermal stress analysis

Yilbaş

Akhtar

Karataş

2011

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Laser hole cutting into Ti-6Al-4V alloy is carried out. Temperature and stress fields during the cutting process are predicted using the finite element code. Temporal variation of surface temperature in the region close to the kerf edge is monitored by a thermocouple and compared with the predictions. The residual stress formed in the cutting region is obtained from the XRD technique and compared with the predictions. The morphological changes around the kerf surfaces are examined incorporating optical and scanning electron microscopes. It is found that von Mises stress attains slightly higher values at the top circumference as compared to that corresponding to the bottom circumference of the hole cut. The prediction of temperature variation agrees well with the thermocouple data. The residual stress predicted also agrees with the results of the XRD technique.

show abstract

Thermal stress evaluation in the steel continuous casting process

Abstract: SUMMARYTwo numerical models for the thermal stress and plastic strain analysis in the solid shell at the initial stage of a steel continuous casting process, are presented and their performances evaluated.

Cited by 47 publications

References 31 publications

Thermo-mechanical Behavior of Peritectic Steel Solidifying in Slab Continuous Casting Mold and A New Mold Taper Design

Thermo-mechanical Behavior of Peritectic Steel Solidifying in Slab Continuous Casting Mold and A New Mold Taper Design

Laser treatment of aluminum composite and investigation of thermal stress field

Laser hole cutting into Ti-6Al-4V alloy and thermal stress analysis

Contact Info

Product

Resources

About