Ukuqina kwamabhawudi amakhemikhali ashisayo-diphu? 

Ake sinqamule i-marketing fluff. Uma othile ebuza ngokuqina kwamabhawudi amakhemikhali e-hot-dip galvanized, ngokuvamile usuke enethemba lempendulo yaphakade. Iqiniso liyi-messier, futhi umbuzo wangempela awukona nje mayelana ne-zinc enamathelayo, kodwa kwenzekani esibonakalayo lapho ibhawodi, into enamathelayo, kanye nendawo ezungezile konke kuhlangana khona.

Umbono Oyiphutha Wesithiyo

Imininingwane eminingi ibhala nje ukujiya kokuqina, ithi, ama-microns angama-85 ohlangothini ngalunye. Lesi isiqalo esihle, kodwa inombolo yokwenziwa. Lapho ngibona khona amaphrojekthi akhubeka kucatshangwa ukuthi ukushuba kuyisihlangu esifanayo, esingangeneki. Akunjalo. Cabanga ngejiyomethri yebhawodi-izimpande zomucu, irediyasi engaphansi kwekhanda, amafulethi ahlabayo. Ukugeleza kwe-zinc ngesikhathi sokucwiliswa kungaba mncane kulezi zindawo zokulala. Uma imbobo ye-substrate yakho iqinile noma uthola ukufakwa okusheshayo okukhuhla ukunamathela emicu ngesikhathi sokufakwa, usanda kwakheka isiza esincane sokuqalisa ukugqwala, kungakhathaliseki ukuthi iyiphi i-spec ekhethekile. Iwashi eliqinile liqala ukuqhweba ngokushesha khona lapho.

Bese kuba khona ingcina yesikhonkwane samakhemikhali ngokwayo. Akuwona wonke ama-resin adalwe alinganayo. Amanye ama-vinyl ester noma ama-epoxy formulations angaba ne-pH noma aqukathe ama-amine athile, endaweni ehlala enomswakama, angase athinte ungqimba lwezinc phakathi namashumi eminyaka. Angikaze ngibone ukwehluleka okuyinhlekelele kulokhu kukodwa, kodwa endaweni ene-chloride ecebile-njengegalaji lokupaka lapho kusetshenziswa khona usawoti wokuqeda i-icing-inhlanganisela ingumbulali. Usawoti udala i-electrolyte emanzi, eqhubayo ephuma embotsheni kakhonkolo iye embhoshweni. I-zinc iyazidela, okuwumsebenzi wayo, kodwa izinga liyashesha.

Ikhanda elibuhlungu emhlabeni wangempela engahlangana nalo kwakusendaweni yogu lolwandle. Amabhawodi ayecaciswe njenge-HDG, futhi okunamathelayo kwakuwumkhiqizo wezinga eliphezulu. Nokho, phakathi neminyaka engu-7, sase sikhala ukugqwala endaweni kakhonkolo ezungeze umshini wokuwasha. Ukuhlaziywa kwangemva kokukhipha (umsebenzi ongcolile, obizayo) kwabonisa ukuthi i-zinc yayingaphelele ku-shank, kodwa ingasekho ngokuphelele emicu yokuqala embalwa eshunyekwe kukhonkolo. Indlela yokwehluleka? Umswakama ogcwele usawoti uyingozi ngokuqhekeka kwe-microscopic kukhonkolo, ugxile kusixhumi esibonakalayo sokunamathisela kuya kuntambo. I-zinc yayivikela ibhawodi lensimbi, kodwa yagqwala lapho yayidingeka khona kakhulu. Isifundo bekungekona ukuthi i-HDG yimbi, kodwa ukuthi ukuqina kwayo kuncike ohlelweni.

I-Adhesive Bond kanye Negebe Elifihliwe

Le yi-crux amakhathalogi angakhulumi ngayo. Amandla ebhawodi lamakhemikhali avela esibophweni esiphakathi kwe-resin nensimbi. Indawo ebushelelezi, entsha ye-zinc ilungele ukuvikela ukugqwala, kodwa ingabe iyindawo efanelekile yebhondi yokunamathela yesakhiwo? Abanye abakhiqizi abanamathelayo bazokutshela ukuthi ugweme ukunamathela kwe-zinc endaweni yebhondi ukuze usebenze kakhulu. Lokho kubonakala kungenangqondo, akunjalo? Ususa isivikelo ukuze uthole amandla. Ukuhwebelana okudinga ukwahlulela kobunjiniyela ngokusekelwe ekilasini lokuchayeka.

Ngikhumbula umphakeli, I-Handan Zitai Fetesser Comment Co, Ltd. (ungathola ububanzi bawo kokuthi https://www.zitaifasteners.com), bake baxoxa ngalo kanye leli phuzu. Ngokusekelwe e-Yongnian, ihabhu elikhulu lokubopha e-Hebei, babona izinto ezingavuthiwe eziningi kanye nokucubungula okuguquguqukayo. Baqaphele ukuthi kumabhawowudi wabo amakhemikhali ashisayo ashisayo amiselwe izindawo ezinolaka, ngezinye izikhathi batusa ukukhanya, okulawulwayo ukuqhunyiswa kokuqhuma okushanelayo ukuze kuthuthukiswe iphrofayili engaphezulu ukuze ibhondiswe, ngaphandle kokufaka engcupheni ukuvikelwa kokugqwala kwenqwaba. Kuyisinyathelo esinama-nuanced esengeza izindleko, ngakho-ke asingeni kukho konke ukucaphuna okujwayelekile, kodwa sikhuluma ngokuqonda okusekelwe phansi komsebenzi womhlaba wangempela womkhiqizo.

Igebe elifihliwe ngomunye umbulali wokuqina owenziwe isifaki. Uma umgodi ungahlanzwa kahle-empeleni, kahle, ngebhulashi nomoya-uthola ungqimba lothuli phakathi kwe-adhesive kanye nekhonkrithi. Noma, uma i-adhesive ingajovwe ngendlela efanele, ishiya isikhala ezungeze ibhawudi. Lelo gebe liba yindawo yokugcina umswakama. Ngisho nogqinsi I-hot-cthessited galvanized ukugqwala, amanzi avaleleke anomoya-mpilo kungaholela ekugqwaleni kwemifantu, ukuhlasela okwenziwe endaweni kanye nokuhlasela. Ngisike amabhawodi abebukeka elungile ngaphandle kodwa abenomgodi oqinile kula maphakethe omoya afihliwe.

Ukusebenza Kwesikhathi Eside vs. Ukuhlola Okusheshisiwe

Imiphumela yokuhlolwa kwesifutho sikasawoti—njengokugqwala okubomvu kwamahora angu-1000—iyithuluzi elihle lokuqhathanisa kodwa isibikezelo esibi sokuqina komhlaba wangempela amashumi eminyaka. Ukuhlolwa kuyaqhubeka futhi kunolaka. Izindawo zangempela zinemijikelezo yokomisa okumanzi. Phakathi nomjikelezo owomile, imikhiqizo ye-zinc corrosion ingakha i-patina evikelayo, ibambezele ukuhlasela okuqhubekayo. Ukuqina ngokuvamile kuba ngcono eqinisweni kunalokho okushiwo ukuhlolwa kwesifutho sikasawoti, inqobo nje uma kukhona lezi zikhathi zokomisa.

Nokho, ezimweni eziswakeme unaphakade, ezimotweni zamabhayisikili ashisayo, njengendawo engaphansi kwedekhi yebhuloho, indaba iyashintsha. Ukujiya, ukuntuleka kokugeleza, kanye nokushintshashintsha kwezinga lokushisa okubangela ukuba ibhawodi liphefumule kudonsa umswakama ngaphakathi nangaphandle. Lapha kulapho ngibone khona ukuthi ukuncipha kwe-zinc kunomugqa omkhulu. Siqaphe ezinye zezitebhisi zokungena esakhiweni sedamu. I I-Hot-Dip-chlisi amakhemikhali amakhemikhali kubonise ukubikezelwa, ngisho nokulahleka kwe-zinc eminyakeni engu-15, okuvumela isimiso sokulungisa esihleliwe. Ukhiye wawuwukuba indawo ezungezile yayinokhahlo kodwa ingaguquguquki, ingapheli.

Ukuhlola okusheshisiwe nakho kugeja ukuwohloka komshini. Ukudlidliza, ukuhlehla komthwalo omncane, ukunwetshwa okushisayo kwebhawodi yensimbi uma kuqhathaniswa nokhonkolo. Lokhu kunyakaza okuncane kungaphula izingqimba ze-zinc-iron intermetallic eziphukayo, kuveza insimbi entsha. Uma lokho sekwenzekile, isenzo somhlatshelo we-zinc siba sendawo futhi sishube kulowo mfantu.

Lapho Okuhle Kwenele Kungekho - Izindleko Zokucaciswa Kakhulu

Ukushayela ukuqina kungaholela ekuthuthukisweni kobunjiniyela. Ngibone ama-specs ebiza amabhawodi amakhemikhali e-HDG ezindaweni ezomile ngokuphelele, ezingaphakathi, ezilawulwa yisimo sezulu. Ukhokhela isistimu yokuvikela ukugqwala engasoze yenziwa isebenze. Ukuqina akupheli, kodwa kungaba njalo nebholidi yensimbi ye-carbon engenalutho kuleso silungiselelo. I-zinc ayifaki inani lapho.

Ngokuphambene, emkhathini wezimboni odla kakhulu (izitshalo zamakhemikhali, izigayo zephepha), i-HDG evamile ingase ibe ukukhetha okungalungile kwasekuqaleni. Uphahla lwayo oluqinile luphansi kakhulu. Lapha, ungase udinge uhlelo lwe-duplex: i-hot-dip galvanized kanye nejazi eliphezulu le-epoxy powder. I-zinc inikeza ukuvikeleka kwe-cathodic uma i-coating yonakalisiwe (i-plus enkulu), futhi i-epoxy inikeza isithiyo esikhulu kakhulu, esimelana kakhulu. Kubiza kakhulu, kodwa kumayelana nokuklama impilo yesevisi edingekayo. Ukuzama ukwenza ibhawodi elijwayelekile le-HDG lihlale iminyaka engu-50 kuleyo ndawo kuyindlela yokwehluleka ngaphambi kwesikhathi.

Kulapho kungena khona inani lomkhiqizi onolwazi. Inkampani efana ne-Handan Zitai Fastener, esendaweni enkulukazi yase-China yokukhiqiza ingxenye enezixhumanisi zayo, akuyona nje imboni. Bacubungula ama-oda angenakubalwa ezindaweni ezahlukene. Ingxoxo enhle yobuchwepheshe nabo ingakugwema ekusebenziseni umkhiqizo wezinga langaphakathi ukuya kuphrojekthi engasemanzini, noma ekusebenziseni ngokweqile ohlelweni lwebanga lasolwandle lweshalofu lempahla. Umbono wabo, osekelwe kuvolumu nokuhlukahluka, wengeza isendlalelo esisebenzayo kudatha yethiyori yokuqina.

Isinqumo: Luhlelo, Hhayi Ingxenye

Ngakho, buyela embuzweni wokuqala. Ukuqina kwe-a I-Hot-Dip Galvanized Chemical Bolt akuyona inombolo eyodwa. Kungumphumela: ikhwalithi nokuvumelana kwe-galvanizing (ukuqina kwe-coating, ukumboza), ukuhambisana nokufakwa okufanele kwe-adhesive, ukulungiswa kwe-substrate yekhonkrithi, nokuchayeka okukhethekile kwemvelo (ama-chlorides, imijikelezo yomswakama, izinga lokushisa).

Kusukela kulokho engikubonile kumasayithi kanye nokuhlolwa kwezidumbu, ibholithi efakwe kahle (ngokunakwa okufanele embozweni wentambo), ehlanganiswe ne-adhesive efanelekile efakwe ngokungenakulinganiswa endaweni elinganiselwe, izohlinzeka kalula impilo yenkonzo yeminyaka engu-30+. Ukwehluleka cishe kuhlale kulandelela emuva ekwehleni kwenye yalezo zixhumanisi zesistimu-imvamisa ukufakwa, kwesinye isikhathi ukungafani kwencazelo.

Ngakho-ke, ungahloli nje isitifiketi sebhawudi. Cabanga ngawo wonke umhlangano. Cacisa izinqubo zokuhlanza imigodi. Cabangela indawo ezungezile ngendlela engokoqobo. Futhi qonda ukuthi i-zinc iyazidela ukuze ivikele insimbi; ukuqina kwayo kuchazwa ngokwezwi nezwi ukuthi kungakanani kwakho ozimisele ukukuyeka ukugle. Dizayina futhi ucacise unalokho kusetshenziswa engqondweni, futhi uzothola ukusebenza okukhokhelayo.