Imaphi amapharamitha wenqubo yokumboza i-fluidized bed powder?

Awekho amapharamitha ajwayelekile enqubweni yombhede omanzi i-powder coating njengoba ishintsha kakhulu ngokuqina kwengxenye. Isitokwe sebha esiwugqinsi esingamayintshi amabili singambozwa nge-polyethylene esebenza ngokusebenza ngokushisisa kuqala kufikela ku-250°F, idiphu imbozwe futhi cishe izophuma ngaphandle kokushisisa okuthunyelwe. Ngokuphambene, insimbi encane enwetshiwe kungase kudingeke ukuthi ishiswe kuqala ibe ngu-450 ° F ukuze kuzuzwe ukujiya okufunayo, bese ithunyelwa ishisiswe ku-350 ° F imizuzu emine ukuze kuqedelwe ukuphuma. Asikaze sakwazi ukuqhamuka namapharamitha wokumboza asebenzela wonke umuntu. Amahhavini ahlukene, futhi izingxenye ziyaphola ngamanani ahlukene. Ama-substrates, isivinini somugqa kanye nezimo zemvelo nazo ziyahlukahluka.

Nawa amanye amaphoyinti okuqalwa ngawo—thatha ingxenye emaphakathi yocingo olwakhiwe njengendawo yokubeka esiqandisini. Kushise imizuzu eyisithupha ku-500°F bese (phakathi kwemizuzwana eyi-10 yokufudumeza) ukucwilise imizuzwana eyisithupha. Thumela uyishise iminithi elilodwa nesigamu ku-350°F. Lokhu ngokuvamile kuzokhiqiza ukwakhiwa kwefilimu phakathi kuka-10-12 ms. Ezicelweni ezinjengama-rack ebhayisikili, lapho kufunwa khona ama-millili angu-30 wokumboza, shisisa ingxenye imizuzu eyisithupha ku-550°F, yicwilise imizuzwana engu-30 bese uyithumela uyishise umzuzu owodwa nesigamu ku-400°F.