Maitiro Ekushandisa Thermoplastic Powder Coatings
Nzira yekushandisa ye thermoplastic powder coatings kunyanya zvinosanganisira:
- Electrostatic kupfapfaidza
- Fluidized bed process
- Flame Spray tekinoroji
Electrostatic Spraying
Nheyo yakakosha yeiyi hurongwa ndeyekuti iyo electrostatic poda inotungamirwa kuenda pamusoro pesimbi yekushanda pasi pechiito chakabatanidzwa chemhepo yakatsikirirwa uye munda wemagetsi kana ichipfuura nepapakati pakati pepfuti yekupfapfaidza nesimbi yakadzika workpiece.
Iyo poda yakachajiwa inonamatira kumusoro kwesimbi yakagadzika workpiece, yobva yanyungudutswa muchoto uye yakatonhodzwa kuti iwane chepamusoro-soro yekuputira. Iyo particle size inonyatsosarudzwa pakati pe150-200µm.
Fluidized Bed process
Iyi nzira inoda chigadziko cheupfu chine air pressure regulator.Mhepo yakamanikidzwa inoparadzirwa zvakaenzana mumudziyo wose nerubatsiro rweporous membrane iri pasi pechigadziko, zvichiita kuti hupfu hwepurasitiki hufashe semvura.
Kana iyo thermoplastic poda mumubhedha uyu wakanyungudutswa inosangana neyakapisa simbi workpiece, hupfu huri padyo pairi hunonamatira pamusoro payo uye hunonyungudika. Simbi yacho inobva yasimudzwa yotonhodzwa kuita coating yemhando yepamusoro.
Zvese zviri zviviri zvakapfava uye zvakakora zvimedu zvakakodzera kuita uku.
Flame Spray tekinoroji
Iyo thermoplastic poda inonyungudutswa nemhepo yakamanikidzwa uye inodyiswa mupfuti yemoto. Hupfu hunozobayiwa nemumoto nekumhanya kukuru. Nguva yekugara yehupfu mumurazvo ipfupi asi yakakwana kunyungudutsa zvachose zvidimbu zvehupfu. Zvimedu zvakanyungudutswa muchimiro chemadonhwe ane viscous zvakanyanya anoiswa pane substrate, achigadzira firimu gobvu pakusimba.
Iyi nzira inoshandiswa kune zvinhu zvisingagone kudziyiswa kana zvisingakwani muhovhoni yeindasitiri.
Imwe nzira yekushandisa ye thermoplastic poda yekupfeka ine rotary lining process.