[b]how can i applay ultrasonic to injection molding process
if i want to decrease friction in cavity and runner system how can apply ultrasonic to mold [/b]
I think the major problem with applying ultrasonics to inection moulding tools is the size and mass of the components. In other applications the tools (sonotrodes) can be custom-designed resonant systems but in injection moulding the physical requirements make this difficult: resistance to heat and high pressure, rigid fixing etc.
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Re: injection molding
Hello hsadeghian,
I think the major problem with applying ultrasonics to inection moulding tools is the size and mass of the components. In other applications the tools (sonotrodes) can be custom-designed resonant systems but in injection moulding the physical requirements make this difficult: resistance to heat and high pressure, rigid fixing etc.
You may be interested in some of the work done by [url=http://www.mpi-ultrasonics.com/plastic-extrusion.html]MPI ultrasonics[/url] - their multi-frequency systems are intended to work around this limitation.
Also, I see that [url=http://www.battelle.org/news/05/05-16-05PolyBond.stm]Battelle[/url] is working in this field (pity they're not giving much away about how it's done!)
Hope this helps.
Chris