Induction bending refers to the use of the induction heating principle to heat a metal part to make it easier to bend.
As the heat is generated very quickly within the component itself very precise control is possible over the heated area thereby reducing scaling. The control of the temperature and heated zone ensure a predictable bend can be produced.
The principle advantages of induction heating over traditional methods such as gas furnaces are as follows:
All systems feature the same principle elements as follows:
Typical applications include railway clips, fork lift forks, and progressive tube bending systems.
Induction Bending - Case Study
Application - Confidential.
Component Details - Round bars 15mm to 25mm diameter 100mm to 350mm long.
Process Requirement - Heat bars to 900°C at rate of between 15 second and 25 seconds.
Induction Equipment - Inductelec D-Type 350kW 10kHz power unit.
Feed System - IHG 250 HBFS Horizontal progressive bar feed system.
The unit features a variable speed pinch roller system to push the bars one behind the other through the tunnel type work coil. Bars are fed from an inclined magazine with a capacity for 30 minutes work.
The system featured PLC control with a recipe based setting system utilising a Mitsubishi HMI with error trapping on all critical parameters. Work coil, IWC 350 air-blast cooler. Non contact infra red pyrometer monitoring system with eject for incorrectly heated parts.
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