Ibhodi yezililo yesilika ephathelwe ngokubanzi kwegalvanizing ukulungisa inqanawa

Kutheni Ukukhathazeka Kwegalelo Kuchaza Umbono Webhodi Yezilonda Yesikhangeli

Xa izipholo ze stekil zisetshenziswa emsakathini zika ngaphandle kwe-corrosion, ubuchule bezobuchwepheshe bakhetha ngoba umetali ubuyiziza phansi futhi kuzokhiwa izindawo eziphazanyayo apho kubekwa ukusabela. Bheka ezindaweni ezifana nezandla, izithalashi, noma indawo yonke apho ukugulwa kumemeza kakhulu, futhi ukungcola kube yinkinga enkulu. Izivikelo zibonisa ukuthi emva kwamashwa mathathu kuphela kuleso msebenzi, amandla okulanda akhala ngaphezulu kuka-40%, njengoba kuchazwe kwi-Material Degradation Report ngonyaka odlulile. Izipholo ze galvanized ezinzululwayo ngendlela ye hot dip ziyodwa lesi sifo ngokuthi zinelayo ibhara yokuphepha ye zinc eyamkelwa umlilo nokujikeleza ukuze kugcine umtshilo wesilika osukwini. Ngokuqhubeka kokugcina ubude bezomlando, lezi zipholo ezozwa ziqhubeka nokuba nezobuchwepheshe kude kunazo ezingavuliwe ngokufanayo kumehluko ofanayo.

• Ukuphepha nokuhlola : Amandla okulanda esinyathelwe ayahlala isiphinde isikhathi
• Ukubalwa kwemali : Kucime izisenzalo ezingalindelekile ngoba ikhorosiyo iyodwa
• Ubunzima bokusebenza : Kususa kudinga ukulungiswa okujwayelekile nokulahlekelwa kokusebenza okungakhathalwa

Iplengi ze-steele ezikhulayo kusobala zibangela izinkinga eziningi kunokuhlukuka kwesiseko. Xa lezi pleingi ziphazamiseka, azikwazi ukuthwala ubunzima futhi kungakhathalwa kube yini. Okuningi kwezobe, i-pits encane efashe ngaphansi kwenqanaba kungakhiqa izinkinga eziphelele ngaphandle kokuthi kuthathwe isiqiniseko. Ngokwesicwangciso esiphublikiswe ngo-2025, ngaphezu kweyodwa kwezintathu ezingavuselekile zibanjalo zazigcina ukubonisa izinkinga ezinkulu zokugcinwa kuphela emuva kweminyaka engu-18 ekunyaseni. Ngokuphambene, iplengi evela nge-hot dip galvanization yayizange iphazamiseke ngemuva kwaleli xesha. Kulapho kusebenziswa i-scaffolding phezulu kwegunya lapho ubuhlobo bezilimi bukhona, lokhu kufakelwa kusobala akuyona indlela ethanda kodwa kuyindlela ebalulekile kubo bonke abathandukelayo nezinkinga ezikude kwezindlu.

Ukuthi Kanjani Ukugunyazwa Kwesitsha Ngokushushwa Kukhupha Kugcinisa Ubude Bezilimi Ze-Steele

Ukuxhuma Kwemifuyo: Ukubamba Kwezinkcazo Zezinkci ZoziZinc Nezokuphepha

Ukugcwalisa kahle kwenziwa ngokufaka isteeli emanzini okugcwalisa ezenzulwini ezingu-450. Le ndlela ikhiqiza izigaba ezithile ze-zinc iron alloy ezidlulisana nesihlangothi sesimo. Okukhanya koko kuleyo kungaphansi kwemipaku noma ukusayina kungukuthi le zigaba zidlula phakathi kuzenzela into epholile kakhulu ekuphileni kwempilo. Zonke izimpaku ziyekwa phakathi kwemipaku engu-80 ne-120, okungcono kangakanani ngokulinganiselwa koko kufanele kuzivikela. Isiphumo esikhulu sipo yisimo sokuthi lokhu kushintsha kugcwalisa amanzi namoya ku-steel njalo ophansi, kubambeza umshimba ngaphambi kokuthi kusuke. Ukuchaza kwasebenzini kubonisa ukuthi lezi gezini zazingelanga izinsuku ezingu-5 kulokho kuphela kwemipaku yesandla xa ziphazamiswa nomlambo ongaphansi kwezimali ezinemvelo. Ukulandela izinhloso ze-ASTM A123 kusiza ekunqumeni ukuthi wonke umphara uphinde phezu, kufaka phakade izindawo ezilungile, nokuxhumeka kapho umshimba ungaphelela kuwo kuqala, kuyenza konke kube mlando kakhulu.

Ukukhuseleka KweCathode ya Galvanic: Ngempela IZinc Layer Liwuthembela Kanjani Izinyawo Ezincane

Xa kusinyanyaniswa noma kuhlakunwa ngendlela eyithile imfuko ye-zinc, iyasebenza njengoba iyagcina anode. Indlela engasebenzisa ngayo zinc ngokuchemoshayensi kusho ukuthi izobhedwa kuqala kabefore the steel under. Kubalulekile kakhulu lokhu. Okuqondileyo kubekwa phakathi kwezimo eziphazanyayo kanti zinc ikhona ezimbili zokuphepha kusiphazamhlophe. Lokhu kwenza uhlelo olubaluleke kakhulu ekusebenzeni ngoba sibona malunga ne-40% engaphansi kuzohlukaniswa kwizinto ezincolotshiweyo kunazo ezingachazwa ngotho elandelayo.

Ukuthembeka Kwempilo: Ukukhazimula Kwegolide Lephalanki Lemithi Emasiningeni Ephambene

Izinguquko Zokuphakama Ekuhleleni Nasekhawunini: Idatha Yophando Ongaphezu Kawengu 5

Igolide lephalanki elethelwe ngokuthathwa kwegolide ezinzulwini lingaphila kahle uma litholakala emasiningeni aphambene. Fakaza izinkundla zezilonda eziphakeme - izivivinyo zange zibonise ukuthi lezi phalanki zazingaba nge-98% yegolide yombala wazo emva kweminyaka engu-5 ethintekayo isisayana esihlangothini nangaphakathi kwayo i-UV yendalo. Lokhu kungaphezu kwezingu-3 emibini kulokho okuphazamisekile kuzo zonke igolide ezingavunyelwa. Okwenza lokhu kukusebenza kakhulu kuyi-layer ye-zinc ekhiqiza isigaba sokuphazamisa. Nangona kusuka kumamba omubi ongenani lokuchloride okuphakade kangaka kungeze 25,000 iphabhaneli ngemililiyo, lezi phalanki azizange ziphinde ziphumelele kuqina elidumbi okuthiwa 'pitting'. Kulabo bonke abasebenzayo emashinini, amaphulanki noma izinqamuzi zakimuva, lo mphilo endiza kushukuma ukuthi kunciphise ukubuyiselwa nokuphila komsebenzi kunalokho akuyinto ekuphazamiswayo okuphela ngisho ngeminyaka engu-18 kuphela.

Ukuchazwa Kwezimali Zokusebenza: Ukuncipha Kwesilinganiso Nokulungisa Kusuka Kuze Kuzingcinwe Ngokungahleli

Ukuchazwa okulinganisa ngeminyaka engu-7 kubonisa ukuthi izikhumba ezizinzisiwe zinika izimali eziphansi ngu-57% kulandelana nazo. Noma kunjalo izimali zokuqala ziphansi ngu-20–30%, izinkunzi zitholakala kusukela ku:

• Akukho ukulungisa kumaglazi : Kususa ukuglazwa kabusha ngayinyanga ngama$18/ft²
• Ubude bezinsuku zokusebenza : Iminyaka engu-12 ikusuka eminyakeni engu-4 yezikhumba ezizingcinwa
• Izisindlo zokuphazamiseka kudala : Ukuncipha kwe-92% kwizinsuku ezingavaleki zokufaka izikhumba ezintsha

Lokhu kusho ukuthi kukhona izimali ezinciphayo ezingu-$42,000 ngasizwe se-100 sezikhumba, kwenza ukuzinziswa ngokujongana njengendlela ephathelene kakhulu nezimali emazingeni aphathelene.

^{Imbonakaliso yokusebenza ekwifilidini itholakala kumazwi okutholakala kumazwi wokuvikwa kwebhadlela (2023)}

Ukukhetha nokuchaza i-Scaffolding Steel Plank ephuziswe ngokubhelterelela

Kukhona umlando wokukhetha i-scaffolding steel planks ephuziswe ngokubhelterelela ukuqinisekisa ukuphepha kanye nokusebenza kwezimali. Kufanele izici zivumelane nezinhloso ezibekwe ngokuvamile zokukhulula kulwandle, ikakhulu xa esetshenziswa emakhanda athintekayo njengecathula noma emakhanda apholile.

Izinhloso Ezibalulekile (ASTM A123, ISO 1461) kanye Nezidingo Zomthelelo Ocamandla Okuphuziswa

ASTM A123 kanye ISO 1461 zibeka igama elilodwa lokulinganisa ubunzima bomthwalo ongaphansi komthwalo. ASTM A123 ibeka inkinga yomthelelo ocamandla we-100μm (3.9 mils) yezithixo ezikhulu kune-6.3mm, kodwa ISO 1461 ichaza i-85μm yezinto ezikhulu kune-6mm. Lezi zinkinga ziqinisekisa ukuphepha kude ngokusebenza kuka:

Xa izilahla ziphazamisa kakhulu kuzimpendulo zomthombo, ziyobangelwa ukuba zihlule ngokushesha kunezimali. Izikhala ezimfushane zibuyisela izici zakho zokulahla ngexesha, zivumela ukuthi ivini liqale likhokele kungaba ngu-2 ukuya ku-3 iminyaka xa kuthathelwa indawo enekhasi. Kukhona into ebalulekileyo ukuthola izibonelelo ze-mill zezinkampani ezibonakalayo eziqinisekisa ukuthi zixhomeke khona kuzimpendulo njenge-ASTM A123 noma ISO 1461 yonke into eqeshisayo emshwaleni. Ukubuka iziphumo ezithile zasebhakheni zingakwenzeka ngendlela eyodwa. Izinto ezilahlwe ngendlela efanelekileyo zibonisa izilinganiso eziphantsi kakhulu zokuhlanjulwa, zilinde kungaba ngu-5% nakuba zazingaqatha kwindawo yentsizwa engaphandle kweminyaka engu-5. Lezi zindlela ziqinisekisiwe zilila ngama-3 kuphindwe kuzo ezidingekayo, okwenzela ukuthi wonke umsebenzi odingekayo wokubhala kube nesivumelwano ekupheleni.

Imibuzo Evame Ukubuzwa

Uyintoni igalvanization yokudonsa ngokuchepheka?

Ukuzinyathela kwegalvani kuyindlela lapho izihlangothi ze-steel zifakwa kwi-zink ephunzisayo, kwenza umvumo wezink okusungula i-steel ukulindiswa komthuthlwa.

Kungani okukhathazeke komthuthlwa kubaluleke kumagumba we-scaffolding ye-steel?

Okukhathazeke komthuthlwa kubalulekile ngoba kumthintela i-steel ukuthi ishinze futhi ithole izindawo ezindebe, ukuqinisekisa ukuthi i-scaffolding isalemnyama futhi isebenza ngokushesha.

Iziphlangethi ezigalvanisiwe zilinganiphi neziphlangethi ezingafakiwanga ngokusho kwemali?

Nakuba iziphlangethi ezigalvanisiwe zinezindleko eziphezulu kuqala, zabelana nezindleko eziphansi kakhulu zezimali enguwo ngoba kudinga ukulungiswa okuncane futhi zilapha ngexesha elide.