Analysis of a Transversal Crack in a Steel Slab

Abstract

This paper deals with an analysis of the possible causes of a transversal crack in a steel slab with a l300×l45 mm cross-section using results from two models. Samples were taken from and around the crack in order to analyze the concentration (i.e. chemical heterogeneity) of the relevant elements. Simultaneously, the concentration of elements at the surface of the crack was measured after the crack was opened. The chemical heterogeneity of elements was analyzed with the aid of the JEOL JXA 8600/KEVEX analytical equipment. The measurement results were processed using mathematical statistics procedures. The results proved that there was an internal crack initiating immediately below the curve of the solid-state temperature and consecutively propagating.

Oscillation Marks and Hooks on the Surface of Concast Slabs and their Relation to Breakout

“…at a temperature 163 °C higher than that of a completely straight surface of the slab of melt 3. The data was obtained from the investigation into the causes behind a transversal crack that occurred in a different steel slab [4]. In order to clarify this, it was necessary to conduct a series of ductility tests at temperatures ranging from 20 °C to the solidus temperature.…”

Study on Control Technology of Transverse Corner Cracks on CC Slab for Automobile Frame Steel Plate

“…Transverse corner cracks are usually generated at the edge and in the corner near the narrow side of casting slab, and it is perpendicular to the casting direction. Barrie Mintz, Harada and Jana studied the causes of transverse corner cracks according to the characteristics of low alloy steel such as automobile frame steel plate [3][4][5] .…”

Quality Control of Casting Slab for 510L Steel

“…However, there are usually defects of transverse corner cracks for low alloy steel due to steel characteristics and continuous casting process [1][2] . Furthermore, it will cause the lines and peeling defects on hot rolled sheet [3][4][5] .…”