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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    • Application Catalog

    233 – Optimization Design for In…

    OverviewAs one of the surface hardening techniques for steel, high-frequency induction hardening has been applied to …

    13 Mar 2018

    • Application Catalog

    220 – Induction Hardening Analys…

    OverviewGears are created in such a way that the surfaces of their teeth are hard in order to resist the wear and tea…

    • Application Catalog

    218 – High Frequency Induction H…

    OverviewGears are created in such a way that the surfaces of their teeth are hard in order to resist the wear and tea…

    • Application Catalog

    208 – High Frequency Induction H…

    OverviewSince gears are products that demand mechanical intensity, high frequency induction hardening is run for surf…

    9 Mar 2018

    • Application Catalog

    186 – Gear Induction Hardening A…

    OverviewGears are created in such a way that the surfaces of their teeth are hard in order to resist the wear and tea…

    8 Mar 2018

    • Application Catalog

    183 – Agitation Force Analysis o…

    OverviewThe purpose of this Application Note is to help JMAG users understand the steps and settings used in a JMAG a…

    • Application Catalog

    172 – High-Frequency Induction H…

    OverviewMachine parts like shafts and gears are made to be resistant to wear and tear. This is accomplished by giving…

    • JMAG Users Conference Proceedings

    Investigations in Coil Design for Indu…

    Toshiaki Matsumura, CAE DEPT.I, AW ENGINEERING CO.,LTD.

    14 Feb 2018

    • JMAG Users Conference Proceedings

    Design Exploration of Heating Coil Sha…

    Hiroshi Yuki, Advanced Technology R&D Center, NTN corporationAbstractThe electromagnetic and thermal analysis using …

    • JMAG Users Conference Proceedings

    Shape Optimization of Induction Heatin…

    Ayaka Nakata, CAE Group Product Development Dept., KOYO THERMO SYSTEMS CO.,LTD.

    • JMAG Users Conference Proceedings

    Introduction and Application of JMAG o…

    Tomohiro Adachi, New Business Propulsion Dept., DAI-ICHI KIDEN CO., LTD.

    • JMAG Users Conference Proceedings

    Development and Experimental Verificat…

    Ju,Dong-Ying, Institute for Advanced Sciences, Saitama Institute of Technology

    15 Feb 2016

    • JMAG Users Conference Proceedings

    Feedback control assisted IH analysis

    Hiroshi Yuki, Advanced technology R&D center, NTN Corporation

    • JMAG Users Conference Proceedings

    Metal Induction Heating Analysis with …

    Masaki Takeuchi, Production&Procurement Group, Production Technology Center, Equipment Technology Dept., Equipment De…

    • JMAG Users Conference Proceedings

    Analytical Predictions for Residual St…

    Hideaki Ueda, Reliability Group, Research Center, Research & Development Center, YANMAR CO., LTD.

    • JMAG Users Conference Proceedings

    Actuality and Scope on Simulation of H…

    Dong-Ying JU, Insitute for Advanced Scienes, Saitama Institute of Techinoligy

    10 Feb 2014

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