Chii chinopisa chinopisa?
Kupisa-kupisa kunokonzera kushambadzira ndiyo inoshandiswa yekuisa mvura yakachena, isati yave yakagadzirirwa mukati mukushambidza zinc yakanyungudutswa.
Mhedzisiro huru pakati peHDG uye inopfuurira galvanization ndeyekuti inopisa-kupisa galvanizing inobvumira zvizere, zvigadzirwa zvekare zvinoshandiswa kumirirwa muzinc bath. Kusiyana neizvi, gavhuani inopfuurira inosanganisira mipumburu yemashizha ematare ari kugadzirwa. Izvi zvinongozogadziriswa kumativi avo.
Pakupedzisira, chinangwa chacho chakangofanana, kushandisa chinyorwa chisina kubviswa chezinc kune kunze kwesimbi.
Irodhi yeHDG inotanga ne caustic kushambidza pamusoro pesimbi. Izvi zvinokosha nokuti chero kusvibiswa, kusvibiswa uye zvigadziro zvakasara pahupamhi hwesimbi zvinogona kudzivirira kudzivirirwa kwezinc kupfeka kubva zvakanamatira kune simbi, iyo inogona kukanganisa kurwisa kwehurosi.
Kuchengetedza kunokonzera neyesimbi iri kuwedzera mubhati yekushambidza kuitira kuti abvise utachiona hwakaita sevhu, pende zviratidzo, mafuta uye mafuta kubva pasi pesimbi.
Zvadaro chero zvipfeko kana mashizha epamusoro pesimbi zvinofanira kubviswa kuburikidza ne pickling. Izvi zvinosanganisira kugadzirisa zvikamu zvesimbi mukati mutsva weasiti yakasimba yakadai sedhydrochloric kana sulfuric acid.
Pakupedzisira, simbi yacho yakagadzirira kuvhara kwayo zinc.
Inguva isati yasati yakanyatsonyudzwa mumubhati wezincini yakanyungudutswa, chikamu chesimbi chinofanira kuputirwa ne zinc ammonium chloride, kubuda kwemakemikari.
Kubuda kwemhepo kunobvisa chero yakasara exyid uye inoshandiswa, uye inogona kuitwa zvakasiyana neyinc yekushambadza (yakashambadza yakaoma) kana panguva imwe chete neyincini yekushambidza imvura (mvura inonaya).
Kana pakaoma kufanana, chikamu chesimbi chinowanikwa muzinc ammonium solution, yakasvava ndokuzoiswa muzinc bath. Kana mvura yakasvibiswa, chikamu chesimbi chinopfuura kuburikidza nemvura inogadziriswa, iyo inofamba pamusoro peyimbi yakanyungudutswa yekushamba, isati yapinda muZinc bath pachayo.
Zinc yege yakadzika zvinenge 98% zinc yakachena uye inochengetedzwa pakushambidza kwe815 kusvika 850 ° F (435 kusvika 455 ° C).
Pazvinenge zvichisvetwa muzinc bath, simbi iri musimbi inogadzikana neyimbi yakanyungudutswa kuti igadzire yakasimba uye yakasimba-yakabatana yenzombe yezinc uye iron . Iyo yakareba iyo inenge ichinge ichizadza, iyo yakasvibiswa nealloy layer.
Ichi ndicho chimwe chezvakanaka zvekutsvaira-kupisa galvanization pamusoro pekugadzirisa galvanization, kunononoka kunogadzirisa kubvumira kupisa uye, nekudaro, kudzivirirwa kwakanyanya kurwisa.
Kamwe kana kupfeka kwapera, simbi inodonha zvishoma nezvishoma kubva mubhati yekushambadza, uye chero zinc yakawanda inodzingwa inodzingwa nekudhonza, kudedera kana kuti centrifuging.
Dhiyabhorosi inopisa yakagadziriswa ikozvino inotanga kuonekwa, kupenya, kutaridzika kunofanidza simbi yakagadzirwa.
Mushure mekugadzirwa kwegatiza kwakakwana, nhengo dzinofanira kuongororwa nekuremekedza kuvhara kwekuvhara, kubatisisa uye pamusoro pemamiriro ezvinhu. Nzvimbo dzisingawaniki dzinogona kuonekwa kuburikidza nekuongorora kunoonekwa, asi zvigadzirwa zvekushandisa zvinogona kushandiswa kuyera kubatana kwepamusoro uye nzvimbo yepamusoro.
Zvishandiso, kemikemikari, pulp uye mapepa, motokari, migodhi, uye magetsi emabhizimisi ose anoshandiswa zvakanyanya yesimbi yakagadzirwa.
Nepo kushandiswa kwepurasitiki yakasimbiswa kunonyanya kushandiswa muzvikwata zvemotokari yemagetsi, zvishandiso, madhuti, kutema mapfundo uye kudenga, HDG steel inogona kuwanika pane zvose kubva pamabhiriji nemapuranga emwenje, kuti isayirwe zvivako, misumari uye kutora shongwe.
Apo Bhurooklyn Bridge yakapedziswa muna 1883, kupfuura 14,500 maira emhepo yakatsva-yakanyungudutswa yakafambiswa yakashandiswa mumatafura ayo mana mana. Makore anopfuura zana gare gare, apo bhulogi rakava nekugadzirisa kukuru, tambo yakatsvaira yakatsvaira yakanga ichiri mumamiriro akanaka kwazvo; Chirevo chekubudirira kwegatidziro senzira yekuchengetedza mativi edu anokosha zvikuru esimbi, simbi.
Sources:
Evans, Charlotte. Anecdotal History yeGalvanizing Industry. AGA (1992). URL: http://www.galvanizeit.org/uploads/publications/History_of_Galvanizing_Industry.pdf
American Galvanizers Association.
"Chii chinonzi Hot-Dip Galvanizing (HDG)?"
URL: http://www.galvanizeit.org/hot-dip-galvanizing/what-is-hot-dip-galvanizing-hdg
International Zinc Association. Galvanizing
URL: https://web.archive.org/web/20140802224444/http://www.zinc.org/galvanizing
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