induction heating aluminium
Induction heating aluminiumย susceptor forย powder expansion with high frequency heating system
Objective Expand powder into solid form for use in crash helmets
Material Microspheric powderย Aluminium chamber 110mm (4.3 in.) diameter x 35mm (1.3 in.) deep usedย to hold powder
Temperature 150 ยบC (302 ยบF)
Frequencyย 20 kHz
Process Time 120 seconds
Equipment โข DW-MF-25kW induction heating system, equipped with a remoteย workhead containing (4) 2.6 ฮผF capacitors (for a total of 2.6 ฮผF).
โข Two pancake coils 110mm (4.3 in) dia. with 45mm (1.8 in.) gap, in aย headphone configuration designed and developed specifically for thisย application.
Process The bottom of the susceptor chamber is sprayed with a release agent andย microspheric powder is added to the chamber.ย The chamber is heated for 120 seconds to reach 150ยบ C (302ยบ F) changing
the powder into solid form. It is then allowed to air cool to 70ยบ C (158ยบ F)ย and removed from the chamber.
Results/Benefits Induction heating:
โข reduces cycle time for increased production
โข energy efficient – only heating the part allowing small productionย runs
โข is very flexible allowing a variety of molds to be used
