The paper reviews the equipment stracture, heating theory , technical characteristics, development and application of plasma heating technology both at home and abroad, prospects the future development of the technology in China.
Oscillation marks are closely related to the surface quality of bloom. Excellent surface quality of bloom is essential assurance of the technology of continuous casting and rolling. The improvement of heat transfer process through mold is beneficial to alleviate oscillation marks. A new method of inhibiting formation of oscillation marks in continuous casting, namely spraying […]
The meniscus shell plays an important role in slab quality and process operation for continuously cast steel. One decisive reason is initial solidifying shell and growing dendrite under the mechanical stress caused by mold oscil- lation and liquid steel flow to generate disturbance of casting. The mechanical state of meniscus shell was analyzed using mathematical […]
A three-dimensional mathematical model was developed based on the equipment parameters and process conditions of arc caster for wide and thick slab continuous casting. The model was established on the basis of Navier-Stokes momentum equation and low Reynolds number turbulence κ-ε equation. The flow field of liquid steel with three different structures and sizes of […]
The billet with constant temperature is an important condition to realize high-speed continuous casting and direct rolling process of long profiles. In order to successfully realize the continuous casting billet with constant temperature, the influence of casting speed, cooling intensity and slab comer radius in the process from mold meniscus to cutting point location on […]
Inclusion is an important defect in reducing the slab internal quality. Increasing the vertical height of caster is conducive to reduce the number of slab internal inclusions and improve its distribution. In order to find out the most appropriate vertical height of caster, CFD model was adopted to study the effect of the vertical height […]
The particle image velocimetry-PIV technique was used to study the factors affecting the flow state in the continuous casting mold. iWith the increase of casting speed, the distance of narrow face im- pact point to level decreases, and difference in the level flow velocity decreases, resulting in the flow state tending to be symmetric. With […]
The molten steel purity is controlled during smelting process, and superheat degree is controlled during continuous casting process, and soaking temperature is controlled during casting billet heating process, and AAR M- 101 F steel produced by continuous casting can meet the requirements of technical agreement and achieve successful tri- M production.
The problem of clogging at submerged entry nozzle in continuous casting mohen aluminum deoxidized steel was analyzed. It was concluded that the A1203 inclusions accumulated at the inner wall of the submerged entry nozzle was the main cause leading to clogging at submerged entry nozzle. The new type of the refining slag was developed and […]
Remarkable results had been achieved in common low-alloy steel production by using EMS in the secondary cooling zone of the slab caster.On the contrary,it exerted a negative effect to certain special steel grades.This paper shows the analysis on this phenomenon as well as the suggestions on EMS application.