Plant measurements and computational models of transient flow with and without electromagnetic fields are applied to investigate transient phenomena in the nozzle and mold region during nominally-steady steel slab casting. In Part II of this two-part article, the effect of applying a static magnetic field on stabilizing the transient flow is investigated by modeling a double-ruler ElectroMagnet...

A three-dimensional model, which coupled flow, heat transfer, solidification, solute transport and electromagnetic field, was separately developed for vertical mold curved of billet continuous casting. Therefore, the characteristics disciplinarians macroscopic behavior different types were revealed. The influence stirring (M-EMS) curvature on in investigated detail. results indicate that M-EMS ...

Casting has many process variations depending upon the material, the type of pattern, mould and the pouring technique like sand casting, investment casting, die casting, squeeze casting and lost foam casting. Sand casting is the most widely used process which can be used to produce intricate parts in almost every metal that can be melted. Casting defects analysis is process of finding the root ...

Defect prediction, using the knowledge based system approach, is being developed for the case of longitudinal surface cracks. Knowledge about longitudinal cracking is in the form of databases, mathematical models and qualitative information. Much of this comes from the technical literature on related topics, but is supplemented by plant experience, as well. Knowledge based systems provide the f...

Mathematical models have been developed to predict temperature, stress, and shape development during initial solidification. The heat transfer model was run for typical casting conditions in the mold for typical thin slab and conventional continuous slab casters. The calculated temperatures were input to an elastic-viscoplastic finite-element stress model of the solidifying steel shell. This mo...

The main objective of this research is to investigate the effect of dewaxing and burnout temperature on the quality of copper alloy casting produced by a low cost block mold that has been developed. In the molding process, two types of silica sand which contains 97.9% silica (SiO2) and 97.2% silica have been used as a refractory material with POP served as a binder. Several mold formulations co...

Article history: Received: 13.04.2015. Received in revised form: 13.07.2015. Accepted: 15.07.2015. In this article, both chemical composition and structure of a high chromium iron hammer head were designed and analyzed respectively. Also, the casting process was investigated and optimized through numerical simulation using commercial software View Cast. On the basis of numerical simulation and ...

Steel is mainly produced through continuous casting; molten steel flows into the mold from tundish, where it cools and then enters secondary cooling zone, ultimately solidifying a billet. During casting production process, quality of billet related to lubrication state coated slag. In upper part mold, consumption liquid protective slag directly affects friction initial solidified shell. Therefo...

Surface quality of the steel slabs in a Continuous Casting (C.C.) process is mainly determined by the stability of the Mold Level Control (MLC). Excessive mold level fluctuations lead to an additional machine scarfing process which is applied to the slabs to avoid surface defects. A conventional Proportional-Integral-Derivative (PID) controller is not robust enough to deal with the disturbances...