Fluxtrol Inc. | Date: 2015-10-28
Iron substance which focuses, concentrates and shields electromagnetic fields or fluxes in the form of powdered metal soft magnetic composites.
Fluxtrol Inc. | Date: 2009-12-29
Magnetic flux concentrator materials, namely, soft magnetic composites of molded metallic powders and polymer binders used for magnetic flux control in induction heating applications.
Ferguson B.L.,Deformation Control Technology, Inc. |
Li Z.,Deformation Control Technology, Inc. |
Nemkov V.,Fluxtrol Inc. |
Goldstein R.,Fluxtrol Inc.
Quenching Control and Distortion - Proceedings of the 6th International Quenching and Control of Distortion Conference, Including the 4th International Distortion Engineering Conference | Year: 2012
Simulation of stresses and deformation during induction hardening is complicated. This paper is a follow on modeling work of induction hardening process presented at 26th HTS in Cincinnati, in October 2011 and UIE Congress in St. Petersburg, Russia, in May 2012. The previous studies were devoted to stress and deformation evolution during a single shot and scan induction hardening process, and the current paper focuses on comparison of these cases and on the methods of stress control in hardening of tubular products. Software ELTA is used to calculate the power and temperature distributions in terms of time from the induction heating process. The power distribution as a function of heating time is imported into DANTE to drive the model. The modeling results include the temperature distribution, phase transformations, stress state and deformation. The detailed coupling procedure between electromagnetic, thermal, stress and deformation phenomena during induction tube hardening is described. The coupled modeling studies allow us to analyze effect of basic process parameters on the formation of stresses and deformation, which make it possible to optimize the process to reduce the cracking possibility, obtain specific microstructure and favorable residual stress state. Copyright © 2012 ASM international® All rights reserved.
Li Z.,DANTE Solutions Inc. |
Ferguson B.L.,DANTE Solutions Inc. |
Nemkov V.,Fluxtrol Inc. |
Goldstein R.,Fluxtrol Inc. |
And 2 more authors.
Journal of Materials Engineering and Performance | Year: 2014
Computer simulation is used to predict the residual stresses and distortion of a full-float truck axle shaft that has been induction scan hardened. Flux2D® is used to model the electromagnetic behavior and the power distributions inside the axle shaft in terms of time. The power distributions are imported and mapped into DANTE® model for thermal, phase transformation, and stress analysis. The truck axle shaft has three main geometrical regions: the flange/filet, the shaft, and the spline. Both induction heating and spray quenching processes have significant effect on the quenching results: distortion and residual stress distributions. In this study, the effects of spray quenching severity on residual stresses and distortion are investigated using modeling. The spray quenching rate can be adjusted by spray nozzle design, ratio of polymer solution, and quenchant flow rate. Different quenching rates are modeled by assigning different heat transfer coefficients as thermal boundary conditions during spray quenching. In this paper, three heat transfer coefficients, 5, 12, and 25 kW/(m2°C), are applied while keeping all other conditions constant. With the understanding of effects of heating and quenching on residual stresses and distortion of induction hardened parts, the induction hardening process can be optimized for improved part performance. © 2014, ASM International.
Goldstein R.C.,Fluxtrol Inc. |
Jackowski J.K.,Fluxtrol Inc. |
Nemkov V.S.,Fluxtrol Inc.
Thermal Process Modeling - Proceedings from the 5th International Conference on Thermal Process Modeling and Computer Simulation, ICTPMCS 2014 | Year: 2014
Being contactless and volumetric, Induction heating has proven to be an effective method for producing high strength weld joints between Carbon Fiber Reinforced Thermoplastic (CFRT) components. There are inherent challenges with the implementation of this technology due to the anisotropic nature of CFRT. The anisotropic electrical and thermal properties of CFRT plate are described. The properties are inputted to a FEA program for electromagnetic and thermal simulation. The program is used to design an induction coil with a goal of achieving uniform temperature distribution in a lap joint between two CFRT plates. Effect of frequency, material orientation, and coil design is examined. Copyright © 2014 ASM International ® All rights reserved.