Chinangwa chikuru chekugadzirisa pamusoro penzvimbo yekuvaka mapuranga ndechekuvandudza kuramba ngura uye kuramba ngura uye kuwedzera hupenyu hwebasa. Nzira dzinotevera dzekurapa dzakajairika uye zvakanakira nezvadzisina kunaka:
- Hot-Dip Galvanizing
Maitiro: Nyura chimiro chesimbi mune yakanyungudutswa zinc fluid kuti igadzire zinc-iron alloy layer uye yakachena zinc layer.
Advantages:
- Yakanyanya kusimba ngura kuramba, corrosion kuramba hupenyu hunogona kusvika makore anopfuura makumi maviri.
- Hapana kuchengetedzwa kwemashure kunodiwa, kwakakodzera kunze, kunyorova kana kutyisa zvakanyanya (senge nzvimbo dzemahombekombe).
-Uniform coating uye yakazara kufukidzwa.
payakaipira:
-Kudhura kwakanyanya uye maitiro akaoma.
-Kupotera kwakakora (anenge 80-100μm), izvo zvinogona kukanganisa kuungana kwezvikamu chaizvo.
- Kurapa kwekushisa kwakanyanya kunogona kukonzera kuderera kwesimbi.
- Electro-Galvanizing
Maitiro: Gadzira zinc layer pamusoro pesimbi ne electrolysis.
Advantages:
-Mutengo wakaderera uye maitiro ari nyore.
- Smooth coating uye chitarisiko chakanaka.
-Inokodzera nharaunda dzine ngura (semukati memba kana munzvimbo dzakaoma).
payakaipira:
- Iyo yekupfeka itete (inenge 5-20μm), uye iyo anti-ngura kugona haina kusimba pane inopisa-dip galvanizing.
- Zviri nyore kuita ngura mushure mekupfeka kana kukwenya.
- Kugara uchiongorora uye kugadzirisa kunodiwa.
- mufananidzo
Maitiro: pfapfaidza anti-rust primer uye topcoat (senge epoxy pendi, polyurethane pendi).
Advantages:
-Mutengo wakaderera, kuvaka kunochinjika, customizable ruvara.
-Kugadziriswa kwepamusoro, nyore kupendesa mushure mekukuvara kwenzvimbo.
-Inokodzera mapurojekiti enguva pfupi kana zvakaderera-bhajeti zvinodiwa.
payakaipira:
- General anti-rust kugona, inotapukirwa nemwaranzi yeultraviolet uye kukukurwa kwemvura, uye inoda kumwayiwa zvakare makore maviri kusvika matatu.
- Iyo firimu yepende ine isina kusimba yekunamatira uye iri nyore kupepeta.
- Powder Coating (electrostatic spraying, Powder Coating)
Maitiro: Powder coating inoshambadzirwa ne electrostatics uye inorapwa pakupisa kwakanyanya.
Advantages:
- Iyo yekupfekedza yakakora, ine yakasimba adhesion, uye inonyanya kupfeka-inodzivirira pane yakajairwa kupfapfaidza pendi.
-Kune hushamwari kwezvakatipoteredza (hapana solvent volatilization), ine mavara akasiyana.
-Inokodzera nharaunda dzine ngura zvine mwero.
payakaipira:
- Mutengo wacho wakakwira kupfuura pendi yakajairwa yekupfapfaidza, asi yakaderera pane galvanizing.
-Kurapa kwepamusoro-tembiricha kunogona kukonzera deformation yesimbi.
- Zvakaoma kugadzirisa mushure mekukuvara kwenzvimbo.
Sarudzo mazano
Nzvimbo inoparadza zvakanyanya (senge nzvimbo dzemahombekombe, zvidyarwa zvemakemikari): inopisa-dip galvanizing inosarudzwa.
Ordinary outdoor environment: inopisa-dip galvanizing kana kumwaya.
Yenguva pfupi / yakaderera-inodhura kudiwa: kupfapfaidza pendi kana electrogalvanizing.
Zvido zvekuchengetedza zvakatipoteredza zvakanyanya: kupfapfaidza.
Precautions
- Bvisa ngura zvakakwana usati warapwa pamusoro (sejecha, pickling).
-Maitiro akasiyana anogona kushandiswa musanganiswa (senge galvanizing + pfapfaidzo pendi kuwedzera dziviriro).
-Kugara uchiongorora uye kugadzirisa, kugadzirisa panguva yakakodzera kweakakuvadzwa machira, uye kudzivirira kupararira kwe ngura.
