Analysis and prevention of edge cracking phenomenon during hot rolling of non-oriented electrical steel sheets

Han, Myung Hwan; Lee, Sunghak; Kim, Nack J.; Lee, Kyung Jong; Chung, Taeki; Byun, Gwihwan

doi:10.1016/s0921-5093(98)01114-9

Cited by 24 publications

(9 citation statements)

References 11 publications

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“…Small laboratory hot rolling mills that recreate the conditions encountered in a production mill have been used to study edge cracking (Dodd and Boddington, 1980;Thomson and Burman, 1980;Han et al, 1999). Cusminski and Ellis (1967) enhanced the production of edge cracks for experimental observation by adding various chamfer angles to the work pieces, allowing some control over the stress state.…”

Section: Introductionmentioning

confidence: 99%

A Test for Evaluating the Effects of Stress-States on Damage Evolution with Specific Application to the Hot Rolling of Free-Cutting Steels

Foster

Lin

Farrugia³

et al. 2009

International Journal of Damage Mechanics

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A new conical splay test is developed to assess the mechanisms of damage evolution in a range of stress states representative of hot rolling. The test consists of a bulk forming operation between open dies, during which plastic deformation occurs across a gradient of stress states from near-uniaxial tension to highly compressive. The transition between tensile and compressive stress state allows the microstructure to be accurately linked to the corresponding stress state. FE simulation of the new test is used to analyze the stress-state history during deformation. A low-carbon free-cutting steel, which is prone to edge cracking during hot rolling, is studied and the modes of damage evolution are discussed.

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Section: Introductionmentioning

confidence: 99%

A Test for Evaluating the Effects of Stress-States on Damage Evolution with Specific Application to the Hot Rolling of Free-Cutting Steels

Foster

Lin

Farrugia³

et al. 2009

International Journal of Damage Mechanics

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“…[12] The surface and longitudinal cracks have been reported in continuous casting. [13,14] Edge crack evolution during rolling was analyzed, [15][16][17][18] and microstructure influences on crack formation were investigated also. [19,20] Additionally, the influences of the grain size on crack initiation and crack growth were investigated.…”

Section: Metals Tend To Develop Edge Cracks During Hotmentioning

confidence: 99%

“…Therefore, a tension stress is generated at the edges if ductility is low to make the length at the edge equal to that at the center. [16] Figure 7 demonstrates schematically the process of crack propagation. It shows the formation and development of the typical fracture feature with cracks corresponding to the rolled microstructures.…”

Section: A Stress and Crack Growth Analysismentioning

confidence: 99%

Analysis of Microstructure Effects on Edge Crack of Thin Strip During Cold Rolling

Xie

Jiang

Yuen³

2011

Metall Mater Trans B

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“…Le et al reported surface oxide fracture of the cold rolled aluminium alloy. Han et al reported the study of edge cracking mechanism in hot rolled electrical steel products. Xie et al presented the effects of friction, surface roughness and microstructure on edge crack initiation and growth of cold rolled thin strip.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation analysis in edge cracking for cold rolled thin strip

Xie

Jiang

Yuen³

2013

Fatigue Fract Eng Mat Struct

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A B S T R A C T Edge cracks in rolled metal products occur occasionally, which influence the rolled strip properties and productivity significantly. Previous studies have indicated that the crack initiation at high plastic strain amplitude mainly occurs at the grain boundaries and stress concentration zone. The mechanics of crack propagation is still not fully identified, especially in the cold rolled thin strip. In this research, experimental investigation and associated analysis have been conducted on the edge crack evolution for thin strip in cold rolling. Three-dimensional finite element numerical simulations have been conducted to assist in better understanding of crack propagation at the rolled strip edge. The impacts of the reduction and the friction coefficients on crack propagation are analysed. Simulation result shows that the thickness reduction and friction influence significantly the propagation of edge cracks. The optimum rolling schedule to obtain crack-free products in metal forming of thin strip is discussed.Keywords edge crack; crack propagation; finite element analysis; thin strip. N O M E N C L A T U R Ea = the length of the crack extension FEA = finite element analysis FEM = finite element method RD = rolling direction S = the actual strain energy density factor SEM = scanning electron microscope TD = transversal direction w = strain energy density ε = strain component σ = stress component Δa = the change of crack propagation

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Analysis and prevention of edge cracking phenomenon during hot rolling of non-oriented electrical steel sheets

Cited by 24 publications

References 11 publications

A Test for Evaluating the Effects of Stress-States on Damage Evolution with Specific Application to the Hot Rolling of Free-Cutting Steels

A Test for Evaluating the Effects of Stress-States on Damage Evolution with Specific Application to the Hot Rolling of Free-Cutting Steels

Analysis of Microstructure Effects on Edge Crack of Thin Strip During Cold Rolling

Experimental and simulation analysis in edge cracking for cold rolled thin strip

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