## Elements of Induction Heating: Design, Control, and ApplicationsThis book provides an overview of the range of applications of induction heating with methods by which conventional as well as special heating jobs can be designed around the capabilities of the process. |

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### Contents

Process Simulation | 178 |

Coil Design and Fabrication | 184 |

Basic Coil Designs | 188 |

Common Design Modifications | 193 |

Specialty Coils | 205 |

Coil Fabrications | 226 |

PowerSupply Leads | 234 |

Flux Concentrators Shields and Susceptors | 241 |

23 | |

26 | |

28 | |

35 | |

Impedance Matching and Tuning for Specific Types of Power Supplies | 38 |

Induction Heating Power Supplies | 47 |

Types of Power Supplies | 50 |

Auxiliary Equipment for Induction Heating | 76 |

Timers | 82 |

Process Design for Specific Applications | 85 |

Design Procedures for Heat Treating | 105 |

Design Procedures for Induction Melting | 118 |

Design of Induction Pipe Welding Operations | 128 |

Design of Induction Brazing and Soldering Operations | 135 |

Fundamentals of Process Control | 143 |

Temperature Measurement | 144 |

TemperatureControl Modes | 163 |

Proportional Controllers and HeatRegulating Devices | 164 |

Integration of Control Functions | 166 |

Distributed Control | 170 |

Miscellaneous Control Technologies Used in Induction Heating | 174 |

Shields | 244 |

Susceptors | 247 |

Materials Handling | 253 |

Materials Handling in Induction Billet and Bar Heating | 260 |

Materials Handling in Induction Heat Treatment | 264 |

Materials Handling in Induction Soldering and Brazing | 273 |

Materials Handling in Other Induction Heating Process | 275 |

Robot Design | 278 |

Special Applications of Induction Heating | 281 |

Bonding Applications of Induction Heating | 288 |

Induction Cap Sealing and Packaging | 291 |

Induction Heating Applications in the Electronics Industry | 292 |

Induction Heating Applications in the Glass Industry | 301 |

Induction Heating Applications in Steel Finishing | 303 |

Vessel Heating | 306 |

Application of Induction Heating for Vacuum Processes | 308 |

Economics | 315 |

Typical Cost Comparisons | 320 |

325 | |

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### Common terms and phrases

alloys Applications of Induction austenitizing Basics of Induction billets brazing capacitance capacitor coating coil Fig coil turns cooling copper cost coupling Curie Curie temperature decreases device diameter eddy currents efficiency electrical energy equipment F. W. Curtis factor fixture flux Frequency Induction Heating furnace heat station heat treating heat treatment heaters heating pattern High Frequency Induction impedance increases induction coil induction hardening induction heating induction heating applications inductor inverter lead Lepel line-frequency load losses martensite material McGraw-Hill melting metal method molten motor-generator multiturn operation output power density power supply production pyrometers quench radiation radio-frequency ratio reference depth resistance resonant robots Schematic illustration shaft shown in Fig single-turn soldering solenoid solid-state steel surface hardening susceptor tank circuit technique temperature thermal thermocouple thickness tion transformer tube tuning typical utilized vacuum voltage water-cooled welding workpiece

### Popular passages

Page 2 - Steel strip so-called eddy currents dissipate energy and bring about heating. The basic components of an induction heating system are an induction coil, an alternating-current (ac) power supply, and the workpiece itself. The coil, which may take different shapes depending on the required heating pattern, is connected to the power supply. The flow of ac current through the coil generates an alternating magnetic field which cuts through the workpiece.

Page 30 - POWER AND POWER FACTOR Power factor (pf) is defined as the cosine of the phase angle between the current and voltage pf = cos </> If the current lags the voltage as shown in Fig.

Page 24 - ... understanding of the subject or to augment the experimental approach to the application. Determining the Power Requirement The amount of power that will be needed for a given application is one of the major parameters to be determined. If the workpiece is regularly shaped and is to be entirely heated, the calculation is straightforward. However, if it is to be only selectively heated so that the remainder of the workpiece is a heat sink for the generated heat, calculation of the power needed...

Page 24 - For through-heating applications, the power density should be kept relatively low to allow conduction from the outer layers (which are heated more rapidly by higher current densities) to the inner layers. There will always be a temperature gradient, but this can be minimized by careful selection of induction heating parameters. Neglecting the temperature gradient, the absorbed power depends on the required temperature rise AT, the total weight to be heated per unit time W, and the specific heat of...