EFD Induction GmbH

Freiburg, Germany

EFD Induction GmbH

Freiburg, Germany

Time filter

Source Type

Petzold T.,Weierstrass Institute for Applied Analysis And Stochastics | Homberg D.,Weierstrass Institute for Applied Analysis And Stochastics | Nadolski D.,IWT - Foundation Institute of Materials Engineering | Schulz A.,IWT - Foundation Institute of Materials Engineering | Stiele H.,EFD Induction GmbH
HTM - Journal of Heat Treatment and Materials | Year: 2015

Induction hardening is an energy-efficient heat treatment process that can be integrated into production lines. The fast heat treatment that is limited to near surface areas requires a precise process control since energy input and temperature distribution must be precisely adjusted to the components geometry and material. Numerical modeling of the process takes a wide variety of process-specific aspects into account and thus leads to a prediction of the hardness result. The article describes the 3D simulation of multi-frequency induction hardening of steel components. The model consists of a system of partial differential equations for the determination of the electromagnetic fields, the temperature and the phase distribution in the workpiece. Due to the skin effect and the occurrence of different time scales for the various physical processes, the model represents a nonlinear multi-scale problem in space and time. The resulting equations are solved using adaptive finite element methods. The consideration of non-linearities arising from temperature dependent material parameters as well as a magnetic permeability depending on the magnetic field itself is essential for the reproduction of experimental results. For the experimentally verified computations for the inductive surface hardening of gears a good agreement between the experimental results and the calculated temperature and hardness profiles can be obtained. © Carl Hanser Verlag Gmbh & Co. Kg.


Schweizer F.,Fraunhofer Institute for Mechanics of Materials | Asperheim J.I.,EFD Induction A.s. Norwegen | Stiele H.,EFD Induction GmbH
HTM - Journal of Heat Treatment and Materials | Year: 2015

For the hardening of large components, inductive hardening techniques with a moving inductor are often applied. In the design and optimization of the inductive hardening processes numerical simulations can be used to adjust the heat input of the moving inductor and therefore the resulting material changes in real components. This can be useful in reducing the effort of experimental iterative methods. Using an industrial component as a demonstrator a numerical method is introduced, which allows to estimate the heat input of a moving inductor and by this the austenitization, the evaluation of hardness due to phase changes and the residual stresses with a low computational effort. The quality of the calculations of the inductive hardened component is validated by experimental measurements of temperature, hardness and residual stresses. © Carl Hanser Verlag GmbH & Co. KG.


Schubotz S.,EFD Induction GmbH | Stiele H.,EFD Induction GmbH
Elektrowaerme International | Year: 2014

High voltages and currents occur in converters and adjacent components used in induction heating devices (e.g. inside the matching transformer), Due to that, extensive safety systems, which are constructed differently depending on the system components, are used for personal and machine protection. In this examination, primarily the construction of an induction heating system is briefly presented and subsequently the different types of protection are discussed. Based on that, a presentation of various safety devices (transformers and monitoring systems), their functionality and the application-specific usage will be done.


Stiele H.,EFD Induction GmbH | Krause C.,Eldec Schwenk Induction GmbH
Elektrowaerme International | Year: 2013

Using surface hardening processes (flame-, induction, laser-, electron beam hardening) normally a fraction of the work piece volume is austenized. This happens usually with high heating rates compared to a heating by furnace. This is the reason why the term short time austenitization is closely connected to the methods of surface hardening. In the following article the metallurgical processes and the characteristics during fast heating and short soaking times are described.


Schubotz S.,EFD Induction GmbH | Stiele H.,Albstadt-Sigmaringen University of Applied Sciences
Elektrowaerme International | Year: 2015

Depending on workpiece and process parameters, induction heating of components requires a certain amount of power. By simulation, experiments and experience, this needed energy can be anticipated well and enables the dimensioning of the converter. Basically, cost of the converter increases with rising provided power. Due to increasing energy expenses, efficiency of the system plays an important role. In this article, the influences of different process parameters on the efficiency of an example are investigated and valuable potential for improvement is demonstrated, so that the heating process is implemented with minimum converter power.


Stiele H.,EFD Induction GmbH | Brand M.,Fraunhofer Institute for Mechanics of Materials | Asperheim J.-I.,EFD Induction A.s.
Elektrowaerme International | Year: 2010

Due to size and costs of big slewing rings, the common methods of experimental trial and error together with destructive test methods for verification of the inductive hardening process are limited. Thereby it is essential to simulate the hardening process in addition to the tests. With these simulations, it should be possible to get conclusions for the hardening pattern, the residual stress and distortion. With actually existing methods a fully three dimensional simulation is extremely time consuming. For that reason, a new method was developed that combines two dimensional with three dimensional simulation to shorten the time for calculation tremendously.


News Article | November 11, 2016
Site: www.newsmaker.com.au

This report studies High Frequency Induction Heating Machine in Global market, especially in North America, Europe, China, Japan, Southeast Asia and India, focuses on top manufacturers in global market, with production, price, revenue and market share for each manufacturer, covering  Inductotherm  EFD Induction  Inductoheat  Denki Kogyo  Nippon Avionics  GH Group  SPC Electronics  Dai-ich High Frequency  Larosa  Hao Thing Electricity Machinery Market Segment by Regions, this report splits Global into several key Regions, with production, consumption, revenue, market share and growth rate of High Frequency Induction Heating Machine in these regions, from 2011 to 2021 (forecast), like  North America  Europe  China  Japan  Southeast Asia  India  Split by product type, with production, revenue, price, market share and growth rate of each type, can be divided into  Anti Aging  Hydrating??  Whitening  Others  Split by application, this report focuses on consumption, market share and growth rate of High Frequency Induction Heating Machine in each application, can be divided into  Heating Application  Heat Treatment Application  Welding Application  Annealing Application  Other Applications 1 High Frequency Induction Heating Machine Market Overview  1.1 Product Overview and Scope of High Frequency Induction Heating Machine  1.2 High Frequency Induction Heating Machine Segment by Type  1.2.1 Global Production Market Share of High Frequency Induction Heating Machine by Type in 2015  1.2.2 Anti Aging  1.2.3 Hydrating??  1.2.4 Whitening  1.2.5 Others  1.3 High Frequency Induction Heating Machine Segment by Application  1.3.1 High Frequency Induction Heating Machine Consumption Market Share by Application in 2015  1.3.2 Heating Application  1.3.3 Heat Treatment Application  1.3.4 Welding Application  1.3.5 Annealing Application  1.3.6 Other Applications  1.4 High Frequency Induction Heating Machine Market by Region  1.4.1 North America Status and Prospect (2011-2021)  1.4.2 Europe Status and Prospect (2011-2021)  1.4.3 China Status and Prospect (2011-2021)  1.4.4 Japan Status and Prospect (2011-2021)  1.4.5 Southeast Asia Status and Prospect (2011-2021)  1.4.6 India Status and Prospect (2011-2021)  1.5 Global Market Size (Value) of High Frequency Induction Heating Machine (2011-2021) 2 Global High Frequency Induction Heating Machine Market Competition by Manufacturers  2.1 Global High Frequency Induction Heating Machine Production and Share by Manufacturers (2015 and 2016)  2.2 Global High Frequency Induction Heating Machine Revenue and Share by Manufacturers (2015 and 2016)  2.3 Global High Frequency Induction Heating Machine Average Price by Manufacturers (2015 and 2016)  2.4 Manufacturers High Frequency Induction Heating Machine Manufacturing Base Distribution, Sales Area and Product Type  2.5 High Frequency Induction Heating Machine Market Competitive Situation and Trends  2.5.1 High Frequency Induction Heating Machine Market Concentration Rate  2.5.2 High Frequency Induction Heating Machine Market Share of Top 3 and Top 5 Manufacturers  2.5.3 Mergers & Acquisitions, Expansion 3 Global High Frequency Induction Heating Machine Production, Revenue (Value) by Region (2011-2016)  3.1 Global High Frequency Induction Heating Machine Production by Region (2011-2016)  3.2 Global High Frequency Induction Heating Machine Production Market Share by Region (2011-2016)  3.3 Global High Frequency Induction Heating Machine Revenue (Value) and Market Share by Region (2011-2016)  3.4 Global High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2011-2016)  3.5 North America High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2011-2016)  3.6 Europe High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2011-2016)  3.7 China High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2011-2016) 3.8 Japan High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2011-2016) 3.9 Southeast Asia High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2011-2016)  3.10 India High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2011-2016) 4 Global High Frequency Induction Heating Machine Supply (Production), Consumption, Export, Import by Regions (2011-2016)  4.1 Global High Frequency Induction Heating Machine Consumption by Regions (2011-2016)  4.2 North America High Frequency Induction Heating Machine Production, Consumption, Export, Import by Regions (2011-2016)  4.3 Europe High Frequency Induction Heating Machine Production, Consumption, Export, Import by Regions (2011-2016)  4.4 China High Frequency Induction Heating Machine Production, Consumption, Export, Import by Regions (2011-2016)  4.5 Japan High Frequency Induction Heating Machine Production, Consumption, Export, Import by Regions (2011-2016)  4.6 Southeast Asia High Frequency Induction Heating Machine Production, Consumption, Export, Import by Regions (2011-2016)  4.7 India High Frequency Induction Heating Machine Production, Consumption, Export, Import by Regions (2011-2016) 5 Global High Frequency Induction Heating Machine Production, Revenue (Value), Price Trend by Type  5.1 Global High Frequency Induction Heating Machine Production and Market Share by Type (2011-2016)  5.2 Global High Frequency Induction Heating Machine Revenue and Market Share by Type (2011-2016)  5.3 Global High Frequency Induction Heating Machine Price by Type (2011-2016)  5.4 Global High Frequency Induction Heating Machine Production Growth by Type (2011-2016) 6 Global High Frequency Induction Heating Machine Market Analysis by Application  6.1 Global High Frequency Induction Heating Machine Consumption and Market Share by Application (2011-2016)  6.2 Global High Frequency Induction Heating Machine Consumption Growth Rate by Application (2011-2016)  6.3 Market Drivers and Opportunities  6.3.1 Potential Applications  6.3.2 Emerging Markets/Countries 7 Global High Frequency Induction Heating Machine Manufacturers Profiles/Analysis  7.1 Inductotherm  7.1.1 Company Basic Information, Manufacturing Base and Its Competitors  7.1.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.1.2.1 Type I  7.1.2.2 Type II  7.1.3 Inductotherm High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.1.4 Main Business/Business Overview  7.2 EFD Induction  7.2.1 Company Basic Information, Manufacturing Base and Its Competitors  7.2.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.2.2.1 Type I  7.2.2.2 Type II  7.2.3 EFD Induction High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.2.4 Main Business/Business Overview  7.3 Inductoheat  7.3.1 Company Basic Information, Manufacturing Base and Its Competitors  7.3.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.3.2.1 Type I  7.3.2.2 Type II  7.3.3 Inductoheat High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.3.4 Main Business/Business Overview  7.4 Denki Kogyo  7.4.1 Company Basic Information, Manufacturing Base and Its Competitors  7.4.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.4.2.1 Type I  7.4.2.2 Type II  7.4.3 Denki Kogyo High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.4.4 Main Business/Business Overview  7.5 Nippon Avionics  7.5.1 Company Basic Information, Manufacturing Base and Its Competitors  7.5.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.5.2.1 Type I  7.5.2.2 Type II  7.5.3 Nippon Avionics High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.5.4 Main Business/Business Overview  7.6 GH Group  7.6.1 Company Basic Information, Manufacturing Base and Its Competitors  7.6.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.6.2.1 Type I  7.6.2.2 Type II  7.6.3 GH Group High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.6.4 Main Business/Business Overview  7.7 SPC Electronics  7.7.1 Company Basic Information, Manufacturing Base and Its Competitors  7.7.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.7.2.1 Type I  7.7.2.2 Type II  7.7.3 SPC Electronics High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.7.4 Main Business/Business Overview  7.8 Dai-ich High Frequency  7.8.1 Company Basic Information, Manufacturing Base and Its Competitors  7.8.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.8.2.1 Type I  7.8.2.2 Type II  7.8.3 Dai-ich High Frequency High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.8.4 Main Business/Business Overview  7.9 Larosa  7.9.1 Company Basic Information, Manufacturing Base and Its Competitors  7.9.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.9.2.1 Type I  7.9.2.2 Type II  7.9.3 Larosa High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.9.4 Main Business/Business Overview  7.10 Hao Thing Electricity Machinery  7.10.1 Company Basic Information, Manufacturing Base and Its Competitors  7.10.2 High Frequency Induction Heating Machine Product Type, Application and Specification  7.10.2.1 Type I  7.10.2.2 Type II  7.10.3 Hao Thing Electricity Machinery High Frequency Induction Heating Machine Production, Revenue, Price and Gross Margin (2015 and 2016)  7.10.4 Main Business/Business Overview 8 High Frequency Induction Heating Machine Manufacturing Cost Analysis  8.1 High Frequency Induction Heating Machine Key Raw Materials Analysis  8.1.1 Key Raw Materials  8.1.2 Price Trend of Key Raw Materials  8.1.3 Key Suppliers of Raw Materials  8.1.4 Market Concentration Rate of Raw Materials  8.2 Proportion of Manufacturing Cost Structure  8.2.1 Raw Materials  8.2.2 Labor Cost  8.2.3 Manufacturing Expenses  8.3 Manufacturing Process Analysis of High Frequency Induction Heating Machine 9 Industrial Chain, Sourcing Strategy and Downstream Buyers  9.1 High Frequency Induction Heating Machine Industrial Chain Analysis  9.2 Upstream Raw Materials Sourcing  9.3 Raw Materials Sources of High Frequency Induction Heating Machine Major Manufacturers in 2015  9.4 Downstream Buyers 12 Global High Frequency Induction Heating Machine Market Forecast (2016-2021)  12.1 Global High Frequency Induction Heating Machine Production, Revenue Forecast (2016-2021)  12.2 Global High Frequency Induction Heating Machine Production, Consumption Forecast by Regions (2016-2021)  12.3 Global High Frequency Induction Heating Machine Production Forecast by Type (2016-2021)  12.4 Global High Frequency Induction Heating Machine Consumption Forecast by Application (2016-2021)  12.5 High Frequency Induction Heating Machine Price Forecast (2016-2021)

Loading EFD Induction GmbH collaborators
Loading EFD Induction GmbH collaborators