Induction Heating

Induction heating has been used for various purposes from production technology such as quenching and shrink fitting through to the design of home appliances as in Induction cooking system.
Induction heating is the technology based on the eddy current, and it becomes a key issue for design to control the eddy current accurately.
However, since the eddy current depends on factors such as geometry, material characteristics, frequency, and temperature, its behavior is complicated.
Such complicity makes it difficult to appropriately control the quantity and location of eddy current.
JMAG correctly reproduces and visualizes the induction-heating phenomenon that changes intricately, and realizes the optimal design for various purposes using induction heating.

Evaluation items

Temperature distribution, heat generation density distribution, eddy current distribution within the work piece, current density distribution inside of wires, magnetic flux density, flux line, heating efficiency, input power, heat source, electromagnetic force.

Case Studies / Functions

Induction hardening of a crankshaft

High-frequency induction hardening rapidly heats up parts contacting with a piston as a crankshaft rotates. Examines the hardened area based on the temperature distribution results obtained.

JMAG function :Rotational motion

Validates uniform quenching of parts contacting with a piston in an analysis, rotating induction heating needs to be taken into account.

JMAG function : Skin mesh function

Optimizes local heating, it requires accurate management of the eddy currents concentrating near the surface of the work piece. Our skin mesh function generates mesh and accurately predicts eddy current distribution, which is vital to simulate the high-frequency quenching process.

Optimal design of edge heater

When designing an edge heater, design parameters such as coil geometry, current conditions and feeding speed are vital issues.
An edge heating analysis simulates the induction heating process of a long steel sheet being conveyed taking account for such parameters.

JMAG function : Translation motion

Simulates the process of the scanning heat treatment for steel sheets.

JMAG function : Material modeling

Supports detailed modeling taking into account temperature changes such as magnetic and electric properties, and specific heat caused by the quenching process.

Induction hardening of a gear

As a precision component, a gear requires an accurate evaluation of dimensional tolerance due to thermal deformation resulting from induction hardening.

JMAG function : Coupled thermal and magnetic field analysis

Covers work piece temperatures beyond the Curie point in high-frequency induction hardening. A two-way coupled analysis of thermal and magnetic field accounting for temperature variations in physical values is indispensable.

JMAG function : Multiple frequencies for power supply

Enables to heat both the gear tip of the wheel and the gear base by controlling the power supply frequency.

Loss distribution of steel sheet by resistance heating

Obtains the temperature distribution, joule loss distribution by running resistance heating analysis using the electric resistance of the steel sheet.

JMAG function : Joule loss analysis

Obtains the joule loss distribution by solving the electromagnetic phenomena and heat transfer phenomena simultaneously.

Uniform heating for induction cooking system

Estimation of the uniformity of temperature distribution on the pot bottom can be led from the loss distribution Confirms if no flux leakage is causing malfunctioning of electric devices surrounding the system by checking to the 3D flux lines.

JMAG function : Circuit component

Enables direct input of power when actual current and voltage are unknown.

JMAG function : Leakage flux calculation in the air ambient

Calculates with high-accuracy the leakage flux distribution on a specified point in the air by integration method.

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    • JMAG Users Conference Proceedings

    Actuality and Scope on Simulation of Heat Treatment

    Dong-Ying JU, Saitama Institute of Techinoligy

    10 Feb 2014

    • JMAG Users Conference Proceedings

    High-Frequency Induction Heating Simulation using a Coupling of JMAG and COSMAP

    Yohei Awata, Denki Kogyo Co., Ltd.

    • JMAG Users Conference Proceedings

    Crankshaft optimization of induction heat treatment using computer aided engineering(The second report)

    Akiko Inami, Fuji Heavy Industries LTD.

    • JMAG Users Conference Proceedings

    Computer simulation of induction heating contains thermal deformation in large ring metal parts.

    Takashi Horino, NETUREN CO,.LTD.

    • Value of FEA

    The Goal of Induction Heating Analysis

    What are FEA's Effects in the Development Process?The purpose of this session is to show the merit of using simulation for the design of induction heating apparatus. Please consider the merits of ana…

    2 Oct 2012

    • Implementing JMAG

    Neturen Co. Ltd.

    Pioneering Induction Heating Technology in Japan Using JMAG to Achieve Higher Accuracy and Quality in Induction HardeningNeturen Co. Ltd. is the top domestic manufacturer when it comes to using induc…

    10 Jul 2012

    • JMAG Users Conference Proceedings

    A System of Coordination With Analysis Engineers and the Successes That Follow

    Norihide Fujiyama, KOYO THERMO SYSTEMS CO.,LTD

    14 Mar 2012

    • JMAG Users Conference Proceedings

    Development of the self fluxing alloy fusing process with the control system using the simulation

    Tomoji Osada, NIPPON THERMONICS Corporation.

    • JMAG Users Conference Proceedings

    Effect of magnetic property on the accuracy of induction heating analysis

    Hiroshi Yuki, NTN Corporation

    • JMAG Users Conference Proceedings

    Measurement of Magnetic Properties at High Temperature and Application to Magneto-Thermal Coupled Analysis of Induction Heater

    Norio Takahashi, Department of Electrical and Electronic Engineering/The Graduate School of Natural Science and Technology/Okayama University

    28 Mar 2011

    • JMAG Users Conference Proceedings

    Guidelines for Generating Mesh in Induction Heating Simulations

    Jun Iwanaga, JSOL Corporation

    • JMAG Users Conference Proceedings

    Trends and Challenges of Induction Heating Analyses

    Hiroshi Hashimoto, JSOL Corp.

    • JMAG Users Conference Proceedings

    Examples Utilizing JMAG

    Shunsuke Funaji,Mitsui Engineering & Shipbuilding co.,ltd

    10 Dec 2009

    • JMAG Users Conference Proceedings

    Crankshaft optimization of induction heat treatment using computer aided engineering

    There is no abstract published

    • Application Catalog

    100 – Surface Heating Analysis of a Steel Plate

    OverviewHigh-frequency induction heating is one heating method used when heat treating the surface of a steel plate. With induction heating, the heating depth can be adjusted because it is possible t…

    9 Mar 2009

    • Application Catalog

    48 – High-Frequency Induction Heating Analysis of a Printer Roller

    OverviewA printer works by running a piece of paper with toner on it between a heated fuser roller and a pressure roller. The heated fuser roller then applies heat to fix the toner to the paper. The …

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