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논문 기본 정보

자료유형
학술대회자료
저자정보
A. Pesin (Magnitogorsk State Technical University) V. Salganik (Magnitogorsk State Technical University) D. Pustovoytov (Magnitogorsk State Technical University)
저널정보
한국소성·가공학회 기타자료 NUMIFORM 2010
발행연도
2010.6
수록면
1,309 - 1,315 (7page)

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초록· 키워드

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In the pipe billet production at the wide strip mills of hot rolling big metal losses are caused by surface defects that affect most parts of the finished strips. The rolling surface defects are referred to the breach of steelmaking technology. Specialists mostly face defects of metal surface such as “scab” and “crack”. The only area suffered from these defects is a slab edge. This area has the least surface temperature at the unbending of the continuous-casting machine, and together with deep buckles made by reciprocating motion of the crystallizer it is mostly subjected to transverse cracks that can be up to several millimeters. Each surface defect of the continuously casted slab will further turn into the surface defect of the strip bar. For some grade sets, mostly made of pipe steel grades the amount of strips with these defects can reach up to 60-70%. The area that is mostly prone to these defects is the edge of the strip. The work reveals investigation of the form change peculiarities in the transverse cracks of the continuously casted slab in roughing rolling in the horizontal rollers. The finite element method with software DEFORM 3D V6.1 has been applied in modeling. The work gives a form change mechanism of transverse cracks of slabs in deformation. Further crack growth in rolling is assessed due to Cockroft-Latham criteria.

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Abstract
INTRODUCTION
Finite Element Simulation by utilizing Deform 3D and Discussion Results
Laboratory Simulation on an Experimental Rolling Mill
Conclusions and Future Prospects
REFERENCES

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