Shanduko Coating of Galvanized Simbi

Iron phosphates kana cleaner-coater zvigadzirwa zvinogadzira zvishoma kana zvisingaonekwe ekushandura mabhanhire pane zinc pamusoro. Mazhinji multimetal ekupedzisa mitsara anoshandisa yakagadziridzwa iron phosphates inopa kuchenesa, uye inosiya micro-makemikari etch pane zinc substrates kupa adhesion zvivakwa.

Makanzuru mazhinji nematunhu zvino ane miganhu pazinc PPMs, zvichimanikidza simbi dzekupedza simbi kuti dzipe kurapwa kwechero mhinduro umo zinc substrates inogadziriswa.

Iyo zinc phosphate conversion coating ndiyo, pamwe, yemhando yepamusoro yekupfeka iyo inogona kugadzirwa pamusoro pemarata. Kugadzira zinc phosphate coating pane galvanized, akakosha ekumhanyisa maajenti anodiwa kuti avhure kumusoro zvakakwana kuti agamuchire zinc phosphate coating. Aya machira anogadzirwa nekuita kwemakemikari ekugezesa pamusoro pezvinhu zvepamusoro. A crystalline zinc phosphate inonyatso "kukura" pane yakachena substrate pamusoro. Mune yakajairwa nhanho nomwe zinc phosphating unit, iwo akasiyana matanho ndeaya:

1. Alkaline cleaner.
2. Alkaline cleaner.
3. Mvura inopisa inosuka.
4. Zinc phosphate processing solution.
5. Mvura inotonhora sukurudza.
6. Post kurapwa (ingave chromium kana nonchromium rudzi).
7. Deionized mvura sukurudza.

Chikamu chenhanho-nhanhatu chaizobvisa danho rekutanga, uye nhanho shanu yaizobvisa nhanho 1 uye 1. Munzira yekupfapfaidza simba rekushandisa, zvikamu zvinofanirwa kuvharwa zvinorembedzwa mumugero nepo mhinduro ichipomba kubva mutangi rinobata. ndokupfapfaidza pasi pekumanikidzwa pazvikamu. Mushonga wekuputira unoramba uchidzokororwa.Munzira yekunyudza yekushandiswa, zvikamu zvinofanirwa kuvharwa mushure mekucheneswa zvinongonyudzwa mumushonga we phosphating solution iri mu tangi yesimbi isina tsvina.Kupukuta kwemaoko nzira yekushandisa haina kushandiswa zvishoma mukati. kushandura coating technology.Phosphate coatings inowanzoiswa nekushandisa zvishanu, zvitanhatu, kana nhanho nomwe. Iyo phosphatesolution inoitwa mukati metembiricha ye7 kusvika 100 ° F (160 kusvika 38 ° C) yekupfapfaidza; 71 kusvika 120 ° F (200 kusvika 49 ° C) yekunyudza; kana tembiricha yekamuri yekupukuta nemaoko. Iyo yakashandiswa zinc phosphate coating uremu inofanira kuva 93 kusvika 150 mg./sq. ft.A processing time of 300 to 30 seconds by spray and 60 to 1 minutes by immersion is usual.Phosphating solutions ine concentration ye 5 kusvika 4% nehuwandu uye inoshandiswa pa spray pres sure ye 6 kusvika 5 psi. Iyo zinc phosphate. Coating ingangove imwe yeakanakisa pendi base coatings pagalvanized simbi. Iyo chromium phosphate yekugadzirisa mhinduro haiburitse yakakodzera pendi base yekupotera pasimbi yakakoshwa.