High frequency welding process pdf

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The High Frequency welding technique overcomes the problems associated with the application of direct heat alone, and enables plastic materials to be welded High-frequency welding is included in a group of resistance welding process variations that use high-frequency welding current (1kHz to 800kHz) to1.4 THE FEDERATION OF HIGH FREQUENCY WELDERS 1-2. 2. THE HF WELDING PROCESS. 2-1. 2.1 WHY USE HIGH FREQUENCY POWER? 2-1. 2.2 PRATICAL HF WELDING. HIGH FREQUENCY WELDING HANDBOOK. 4. HF WELDING TECHNIQUES. This section gives information on machine setting, weld area calculations and Applique welding. 1.4 THE FEDERATION OF HIGH FREQUENCY WELDERS 1-2. 2. THE HF WELDING PROCESS. 2-1. 2.1 WHY USE HIGH FREQUENCY POWER? 2-1. 2.2 PRATICAL HF WELDING. Energy used in the RF welding process, typically 27 MHz, is applied to the electrodes, and the resulting alternating current induces a rapidly reversing (