Uguqulo lweNtsimbi yeGalvanized
I-iron phosphates okanye iimveliso ze-coater-coater zivelisa uguqulo oluncinci okanye olungabonakaliyo kwi-zinc surfaces. Imigca emininzi yokugqiba i-multimetal isebenzisa i-phosphates yentsimbi elungisiweyo enikezela ngokucoca, kwaye ishiye i-micro-chemical etch kwi-zinc substrates ukubonelela ngeempawu zokubambelela.
Oomasipala abaninzi kunye namazwe ngoku banemida kwi-PPM ye-zinc, ukunyanzela abagcini besinyithi ukubonelela ngonyango lwazo naziphi na izisombululo apho i-zinc substrates zicutshungulwa.
I-zinc phosphate conversion coating, mhlawumbi, i-coating ephezulu yomgangatho onokuthi uveliswe kumphezulu we-galvanized. Ukuvelisa i-zinc phosphate coating kwi-galvanized, ii-agent ezikhethekileyo ezikhawulezayo zifuneka ukuba zisebenze umphezulu ngokwaneleyo ukufumana i-zinc phosphate coating. Ezi zogquma zenziwe ngesenzo samachiza okuhlamba kwizinto ezingaphezulu. I-crystalline zinc phosphate eneneni "ikhule" kwindawo ecocekileyo ye-substrate. Kwinqanaba eliqhelekileyo leyunithi ye-zinc phosphating, amanqanaba ahlukeneyo ngala:
- Isicoci sealkaline.
- Isicoci sealkaline.
- Ukuhlanjululwa ngamanzi ashushu.
- Isisombululo seZinc phosphate.
- Ukuhlanjululwa ngamanzi abandayo.
- Unyango lweposi (ingaba yichromium okanye uhlobo lwe-nonchromium).
- Ukuhlanjululwa ngamanzi okuhlanjululwayo.
Iyunithi yemigangatho emithandathu iya kuphelisa inqanaba le-1, kwaye iyunithi yenqanaba lesihlanu iya kuphelisa izigaba ze-1 kunye ne-7. Kwindlela yokutshiza amandla, iinxalenye eziza kugqunywa zixhonywe kwi-tunnel ngelixa isisombululo siphonswa kwi-tank yokubamba. kwaye itshizwe phantsi koxinzelelo kwiindawo. Isisombululo sokugquma sihlala sijikeleza ngokuqhubekayo.Kwindlela yokucwiliswa kwesicelo, iinxalenye eziza kufakwa emva kokuba zihlanjululwe zixutywe ngokulula kwisisombululo se-phosphating equlethwe kwi-tank yensimbi engenasici.Indlela yokucoca ngesandla yokusetyenziswa inokusetyenziswa okulinganiselweyo kwisisombululo iteknoloji yokuguqula i-coating.I-Phosphate i-coatings idla ngokusetyenziswa ngokusebenzisa izigaba ezintlanu, ezintandathu, okanye ezisixhenxe. I-phosphatesolution ibanjwa kuluhlu lobushushu obuphakathi kwe-100 ukuya kwi-160°F (38 ukuya kuma-71°C) ukutshiza; I-120 ukuya kwi-200 ° F (49 ukuya kwi-93 ° C) yokuntywiliselwa; okanye ubushushu begumbi lokosula ngesandla. Ubunzima bokugquma i-zinc phosphate kufuneka bube yi-150 ukuya kwi-300 mg./sq. I-ft.Ixesha lokucubungula i-30 ukuya kwi-60 imizuzwana ngokutshiza kunye ne-1 ukuya kwi-5 imizuzu ngokuntywiliselwa yinto eqhelekileyo.Izisombululo ze-Phosphating zine-concentration ye-4 ukuya kwi-6% ngomthamo kwaye zisetyenziswe kwi-spray pres sure of 5 ukuya kwi-10 psi.I-zinc phosphate Ukugquma mhlawumbi yenye yezona zinto zibalaseleyo zokugquma kwepeyinti kwintsimbi ekhandisiweyo. Isisombululo sokusetyenzwa kwe-chromium phosphate asivelisi isiseko sepeyinti esifanelekileyo sokugquma kwintsimbi enezinki.