Induction Annealing Aluminum PIpe With High Frequency Induction Heating Machine
Objective Annealing aluminum fuel tank fill neck to 650 ยบF (343 ยบC)
Material Aluminum fill neck 2.5โ (63.5mm) diameter, 14โ (35.5cm) long
Temperature 650 ยบF (343 ยบC)
Frequency 75 kHz
Equipment โขDW-HF-45kW induction heating system, equipped with aย remote workhead containing eight 1.0ฮผF capacitors for aย total of 2.0ฮผF
โข An induction heating coil designed and developedย specifically for this application.
Process An eight turn helical is used to heat the tube for annealing. Toย anneal the full length of the tube, the tube is placed in the coilย and heated for 30 seconds then rotated and the bottom half isย heated for an additional 30. The tube is then bent while hot toย prevent cracking.
Results/Benefits Induction heating provides:
โข High efficiency, low energy cost
โข Fast, controllable and repeatable process
โข Prevention of cracks
โข Hands-free heating that involves no operator skill forย manufacturing
โข Even distribution of heating