Study On Flow Characteristics Of Vacuum Melting Rapid Solidification Furnace In Casting Process

CFD is an emerging discipline and is to solve complex flow field numerical model in order to obtain the flow of data and the role of the spoiler body force, torque, flow and heat and other images under various conditions in order to obtain the flow of data and the role of the spoiler body force, torque, flow and heat and other images. CFD simulation technology is based on computational fluid dynamics discipline and has powerful simulation capabilities. It has been used by metallurgy, aviation, shipbuilding and majority of engineering. With aerodynamics and CFD simulation capability advances, the study of turbulence models has been made great progress, because of the unremitting efforts of researchers. A variety of physical parameters (velocity, pressure, temperature, etc.) in the flow field change with time and space. CFD simulation software are able to restore the truth.In this paper, vacuum accelerating melting furnace is the research object and a 3D model of vacuum melting furnace flow field has been constructed. Without prejudice to the computer simulation results and keeping the model consistent with the premise of the actual work, the model was simplified to a certain extent in order to obtain improved quality and model grid computing speed, including Crucible cavity, the crucible exit chute, intermediate dynamic mesh compression zone, tundish and casting launder and export diversion channel. This article uses ICEM CFD for the meshing of geometric model and uses CFX for the numerical simulation of flow field.. Compare the simulation results of different positions, different times and different dumping curvesThe flowing of the melting NdFeB in the vacuum melting furnace coagulation is a complex process. Melt flowing out from the gate does not flow directly into the bottom of the tundish cavity and will bounce on the cavity wall. During this period,mass flow rate will change. Therefore only considering flow casting constantly can not completely solve the problem about a uniform crystalline water-cooled copper roller, cloth flow system also needs to be analyzed. It means analysising the flow state of the melting NdFeB. When the body cavity beneath the tundish melt more side end near the melt flow more uniform distribution. When fewer body cavity beneath the tundish melt, the melt near the side end face cloth over the uneven flow and showing a relatively thick middle portion, both end portions of a relatively thin trend. Melt flow chamber is very unstable in the cavity. When the distance between the section side and the side exceeds 10mm, the melt flow is able to obtain a more stable state. The distance between water-cooled copper and side end surface should exceed 10mm.Numerical simulation method used in this paper can be applied to engineering practice, providing an important analytical tool for the vacuum accelerating melting furnace design.