Induction hardening of gear wheels of steel 41Cr4

Barglik, J.; Smagór, A.; Smalcerz, A.

doi:10.3233/jae-2295

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…9. During experiments at the laboratory stand located at the Silesian University of Technology, the temperature is measured by means of specialized measuring and registration systems containing the specialized pyrometer, cameras and computer registration [19]. They make it possible to determine: the temperature in the selected point (in the analyzed case in point G) and the average temperature within the top plane of the gear wheel.…”

Section: Example Of the Cdfih Systemmentioning

confidence: 99%

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Archives of Electrical Engineering

Barglik¹

2018

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Induction surface hardening means the hardening of a thin zone of the material only, while its core remains soft. The paper deals with the modelling of the Consecutive Dual Frequency Induction Hardening (CDFIH) of gear wheels and its validation. For gear wheels with modulus m smaller than 6 mm a contour profile of hardness distribution could be obtained. The investigated gear wheel is heated first by a medium frequency inductor to the temperature approximately equal to the modified lower temperature Ac 1m . It means beginning of the austenite transformation. Then the gear wheel is heated by the high frequency inductor to the hardening temperature making it possible to complete the austenite transformation and immediately cooled. In order to design the process it is necessary to identify modified critical temperatures and to obtain expected temperature distribution within the whole tooth.

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Section: Example Of the Cdfih Systemmentioning

confidence: 99%

“…5. Exemplary temperature dependence on time in the surface zone of the body for theCDFIH process (notations in the text)[13]…”

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confidence: 99%

Archives of Electrical Engineering

Barglik¹

2018

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“…irregularly shaped gears ( Fig. 1), in a very short time, caused the development of dualfrequency inverters [5][6][7][8][9]. Dual-frequency converters are implemented in many possible configurations described in more detail in papers such as [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Dual‐frequency induction heating for gear hardening: converter, resonant circuit, and FEM modelling

Kierepka

Legutko

Zimoch

et al. 2018

IET Power Electronics

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In order to achieve required mechanical properties of hardened elements, such as gear wheels, dual-frequency induction heating may be used. Dual-frequency allows heating only the outline of the gear, due to mixed penetration depth of the subject frequencies. This method of hardening requires the process to be very short as heat may spread by means of conduction. This study presents a 3 kW prototype inverter and its control scheme is used to generate dual-frequency output current. The overall efficiency of the inverter is 96%. An analysis of the output resonant circuit is made to find the resonant frequencies. Finally, circuit and finite element method (FEM) simulations are coupled to analyse the effect of dual-frequency current on the magnetic field, current density, and energy density on the surface of a gear wheel.

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