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

    83 – Magnetic Shielding Analysis of an Induction Furnace

    OverviewAn induction furnace is an apparatus that uses high-frequency induction heating to melt metal. Running current through the coil surrounding the crucible starts electromagnetic induction pheno…

    30 Jan 2009

    • Application Catalog

    233 – Optimization Design for Induction Heating Coils

    In this example, the design of a coil used for the high-frequency induction hardening of gears is carried out using an optimization function.

    13 Mar 2018

    • Application Catalog

    172 – High-Frequency Induction Heating Analysis of a Test Piece (Rotational Induction Hardening)

    OverviewMachine parts like shafts and gears are made to be resistant to wear and tear. This is accomplished by giving them a certain degree of flexibility by maintaining their interior toughness whil…

    8 Mar 2018

    • Application Catalog

    208 – High Frequency Induction Hardening Analysis Accounting for Deformation (Abaqus Link)

    OverviewSince gears are products that demand mechanical intensity, high frequency induction hardening is run for surface heat treatment. Since induction hardening can rapidly heat only the surface of…

    9 Mar 2018

    • Application Catalog

    186 – Gear Induction Hardening Analysis Using Two Frequencies

    OverviewGears are created in such a way that the surfaces of their teeth are hard in order to resist the wear and tear that occurs when they come into contact with the teeth of other gears. However, …

    8 Mar 2018

    • Application Catalog

    45 – High-Frequency Induction Heating Analysis of an IH Cooking Heater

    OverviewAn IH cooking heater cooks food by heating a pot that acts as a conductive body. It heats this pot with an induction heating method that uses electromagnetic induction. Eddy currents flow in …

    16 Jan 2008

    • Application Catalog

    50 – High-Frequency Induction Heating Analysis of a Steel Wire (Translational Induction Hardening)

    OverviewSteel wires are made to be resistant to wear and tear. This is accomplished by giving them a certain degree of flexibility by maintaining their inner toughness while increasing the hardness o…

    18 Apr 2008

    • Application Catalog

    183 – Agitation Force Analysis of an Induction Furnace

    OverviewThe purpose of this Application Note is to help JMAG users understand the steps and settings used in a JMAG analysis. It is intended to help those who are working with a new analysis target b…

    8 Mar 2018

    • Application Catalog

    220 – Analysis of the High-Frequency Induction Hardening and Cooling of a Gear

    In this example, deals with induction heating and cooling analysis. An example is presented where the cooling rate for a gear differs depending on the cooling conditions.

    18 Feb 2019

    • Application Catalog

    218 – High-Frequency Induction Hardening Analysis Accounting for Deformation

    In this example, using the JMAG magnetic field - thermal stress coupled analysis function, analysis is performed evaluating gear deformation from induction heat hardening.

    19 Feb 2019

    • JMAG Users Conference Proceedings

    Investigations in Coil Design for Induction Heating Using JMAG and the Optimization Tool HEEDS

    Toshiaki Matsumura, AW ENGINEERING CO.,LTD.

    14 Feb 2018

    • Application Catalog

    51 – High-Frequency Induction Heating Analysis of a Gear

    OverviewGears are created in such a way that the surfaces of their teeth are hard in order to resist the wear and tear that occurs when they come into contact with the teeth of other gears. However, …

    16 Jan 2008

    • Application Catalog

    49 – High-Frequency Induction Heating Analysis of a Steel Sheet

    OverviewThe rolling process of steel sheets changes the strength and properties of the product, so heat treatment is used. High frequency induction heating is a type of heat treatment that uses a hig…

    18 Apr 2008

    • 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

    • JMAG Users Conference Proceedings

    Introduction and Application of JMAG on Induction Heating

    Tomohiro Adachi, DAI-ICHI KIDEN CO., LTD.

    14 Feb 2018

    • 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 …

    9 Mar 2009

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