Induction shrink fitting refers to the use of induction heating to heat a component to a pre-set temperature to create thermal expansion to allow a second component to be inserted. Conversely the same technology can be used to expand components to allow them to be disassembled.
The controllability and precision of induction heating process make it an extremely effective solution to this type of application. As the heat is generated very quickly within the component itself very precise control is possible over the heated area thereby reducing distortion and allowing extremely quick efficient processing. Where components are to be disassembled it also allows rapid heat to be generated in the component to be removed before conduction can transfer heat to the main assembly thereby expanding this.
The principle advantages of induction edge hardening over traditional methods such as flame hardening are as follows:
All induction shrink fitting systems feature the same principle elements as follows:
Optional elements for the system are sometimes required subject to the application as follows:
Induction Shrink Fitting - Case Study Automotive Starter Ring to a Flywheel
Application - Expand Starter Gear & Press onto Flywheel.
Component Details - 350mm diameter gear 12mm thick.
Process Requirement - Shrink Fit two components to form a single unit.
Induction Equipment - UT 111 200 5kW 100kHz Ultra-Tec power unit.
Feed System - IHP 35/22 10 Tonne hydraulic "C" press with specially designed alignment tooling.
The system features variable press pressure and sensors to detect overpressure and final position to ensure gear is fully home. Air blast is utilised to chill components to allow faster unload.
Power, time, pressure and temperature parameters are all set via a HMI panel in conjunction with a PLC based control system. Operator protection is via a light guard. Non contact optical pyrometer system to detect over temperature. Cooling system to cool power unit and coils.
Please browse our website for more information about Induction Heater Manufacturing then contact us on 0114 272 3369 to speak to a member of our team or e-mail us on firstname.lastname@example.org.