Measurement of solidified shell thickness for 2# continuous casting slabs of chongqing iron & steel Co.

A two-dimensional thermo-mechanical coupled finite element model is established to analyze the solidification process of continuous casting slabs in mold and the stress and strain distributions in the solidified shells.

A 3D thermal conduction model is set up, and the shapes as well as temperature distributions of initial solidified shells in moulds for continuous casting of thin slabs are obtained with finite differential method, based on which the stress and strain distributions are given out using 3D thermal elasto plastic contact finite element method.

The temperatures and thichnesses of solidified shells in ISP type mould for continuous casting of thin slabs are analysed,and based on which three dimensional thermal palsto elastic EFM analyses on the shells are carried out,and ,in turn,the distributions of temperatures,stresses and displacements,as well as the longitudinal cracking index (L.

The results show that due to the strong jet impingement on the narrow face in mold,solid shell near the impingement point is very thin.

The solidified shell thickness of Jigang slab caster is measured by nail-shooting technology,and the measuring results are compared with theoretical calculation values.

The application of nail-shooting technique in the shell thickness measuring was introduced.

Unsteady temperature distribution and shell thickness in the continuous casting bloom were numerically simulated.

Determination of solidified shell thickness of continuous casting slab at Angang;

The surface temperature and the solidified shell thickness of round billet are strongly influ.

The solidified shell thickness and solidification coefficient of slab in the secondary cooling zone on Pangang curved slab caster have been studied,by use of “pin shoot”method.