induction heating aluminium
Description
Induction heating aluminiumĀ susceptor forĀ powder expansion with high frequency heating system
Objective Expand powder into solid form for use in crash helmets
Material Microspheric powderĀ Aluminium chamber 110mm (4.3 in.) diameter x 35mm (1.3 in.) deep usedĀ to hold powder
Temperature 150 ĀŗC (302 ĀŗF)
FrequencyĀ 20 kHz
Process Time 120 seconds
Equipment ā¢ DW-MF-25kW induction heating system, equipped with a remoteĀ workhead containing (4) 2.6 Ī¼F capacitors (for a total of 2.6 Ī¼F).
ā¢ Two pancake coils 110mm (4.3 in) dia. with 45mm (1.8 in.) gap, in aĀ headphone configuration designed and developed specifically for thisĀ application.
Process The bottom of the susceptor chamber is sprayed with a release agent andĀ microspheric powder is added to the chamber.Ā The chamber is heated for 120 seconds to reach 150Āŗ C (302Āŗ F) changing
the powder into solid form. It is then allowed to air cool to 70Āŗ C (158Āŗ F)Ā and removed from the chamber.
Results/Benefits Induction heating:
ā¢ reduces cycle time for increased production
ā¢ energy efficient – only heating the part allowing small productionĀ runs
ā¢ is very flexible allowing a variety of molds to be used
