Mechanism of Edge Seam Defects of Stainless Steel Generated during Hot Plate Rolling

Sun, C. G.; Lee, Jong-Seog; Lee, Junghyeung; Hwang, Soonkyu

doi:10.2355/isijinternational.46.93

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…Due to the increase in temperature by increased speed, affects the flow stress. The effective strain was decreased.As illustrated by Cheng Gang Sun et al [7], increasing the speed will increase the temperature. The plot [figure.5.8 (a & b)] show when the speed is increased, the effective strain is decreased.…”

Section: Effectitive Strainmentioning

confidence: 96%

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Forming Interrogation of Rolling Process using Rollers

2019

IJITEE

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In this article to be created three dimensional model of reinforced plastic using finite element analysis (FEA) to simulated slab rolling between rollers by wide thickness in work piece is analyzed. The behaviour of materials while rolling roller at the time of pass, finite element deform3d program employed and developed 3D model of the heat developed rolling process. The influences of different process parameters namely speed of the roller, thickness of the slab, thickness reduction & heat transfer coefficient are taken an account. The stress, strain & strain rate, the temperature distribution in the roll and the slab, are developed throughout a steady-state analysis of the process involved. From the simulation process, the machining possibilities are obtained

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Section: Effectitive Strainmentioning

confidence: 96%

“…Figure.10 (a & b) represents this comparison. Cheng Gang Sun et al [7] also stated that the increasing temperatures, decreases the effective strain and roll pressure.…”

Section: Effective Strainmentioning

confidence: 98%

Forming Interrogation of Rolling Process using Rollers

2019

IJITEE

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“…This view was later accepted by some scholars in Japan, South Korea, and China. [15][16][17] Another effective technique for the seam defects of the strip and plate is to use the chamfer casting slab technique. The deformation shape and temperature distribution of common slab and chamfered slab have been analyzed by the slab rolling experiment and finite element software.…”

Section: Introductionmentioning

confidence: 99%

Formation Mechanism and Control Strategy of Edge Seam Defects for Hot Rolling Interstitial‐Free Steel

Wang

Zhang

et al. 2021

steel research int.

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During the process of hot rolling, seam defects often appear on the edges of the interstitial‐free (IF) steel, which seriously affects product quality and yield. To this end, the macro‐ and micromorphology of edge seam defects are analyzed, their specific characteristics are summarized, and the defect cast slab rolling experiment is conducted. The experiment shows that the pore, crack, and slag inclusion are not the causes of the seam defects. Then, through a combination of theoretical analysis, actual parameters’ detection, and experiments, the formation mechanisms of the seam defects are evidently side folding of the intermediate slab and flipping of the corner metal. The mechanisms of the two types of folds are also described in detail. Finally, in view of the mechanisms, the advantages and disadvantages of control measures are analyzed, and the concave anvil of the slab sizing press is selected at last. To determine the effectiveness of the scheme, a pass experiment is conducted on a slab sizing press at the production site. Results show that the steel coils without slab sizing press generally have seam defects, whereas the coils with a concave anvil slab sizing press do not. The defects are almost totally eliminated.

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“…This deformation makes the defect to form near the corner, and develop to be seam defect on the strip. 2,4) The disadvantages are improved by chamfered slab. The two corners are cooled alternately, that is benefited for temperature holding.…”

Section: Temperature Distribution Of the Cornersmentioning

confidence: 99%

“…3,4) The reduction of defect is mainly improved by incorporating the slab edge forming mill. 5) A sizing press is introduced by employing the convex die for the stainless steel in hot strip rolling process.…”

Section: Introductionmentioning

confidence: 99%

Application of a Chamfered Slab to Reduce Risk of Edge Straight Crack on Hot Rolled Strip Surface

Zhang

Wang

2015

Mater. Trans.

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Major losses of steel were due to edge straight crack for hot rolled IF steel strip products. A chamfered slab with 30°chamfered angle was adopted to improve the defect. The deformation and temperature change processes were simulated with dynamic explicit FEM. The temperature of chamfered slab edge and side was higher, and the distribution was more even than rectangle slab. Due to this temperature field and the chamfering shape, the 'dog bone' shape of chamfered slab rolled after vertical roll achieved a lower level, and the corner shape changed to circular arc shape. These deformation characteristics in turn brought the advantageous for temperature holding. The chamfered slab used in hot strip rolling experiment reduced the defect ratio from 50% to 7%.

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Mechanism of Edge Seam Defects of Stainless Steel Generated during Hot Plate Rolling

Cited by 8 publications

References 7 publications

Forming Interrogation of Rolling Process using Rollers

Forming Interrogation of Rolling Process using Rollers

Formation Mechanism and Control Strategy of Edge Seam Defects for Hot Rolling Interstitial‐Free Steel

Application of a Chamfered Slab to Reduce Risk of Edge Straight Crack on Hot Rolled Strip Surface

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