Kuyaziwa kakuhle ukuba umgangathoiityhubhu zesikwere kunye nezixande ezigayiweyokwaye indlela yokufaka ichaphazela ngokuthe ngqo uzinzo lwezakhiwo zentsimbi.
Okwangoku, izixhobo zokuxhasa ezikwimarike ikakhulu ziintsimbi yekhabhoni. Izinto ezisetyenziswa kwintsimbi yekhabhoni ngokubanzi zii-Q235 kunye ne-Q345, eziphathwa nge-hot galvanizing. Inkxaso yenziwe nge-strip steel coil ngokusebenzisa i-cold bending, welding, hot galvanizing kunye nezinye iinkqubo. Ngokubanzi, ubukhulu kufuneka bube ngaphezu kwe-2mm, kwaye ngakumbi kwiindawo ezithile ezikunxweme, eziphakamileyo kunye nezinye iindawo ezinomoya, kucetyiswa ukuba ubukhulu bungadluli kwi-2.5mm, kungenjalo kukho umngcipheko wokukrazuka kwindawo yokudibanisa intsimbi.
Kwizakhiwo ezinkulu,iipayipi zesikwere kunye nezixande zentsimbi yekhabhoni, kufuneka kufikelelwe kubungakanani ubukhulu be-zinc coating ukuze kuhlangatyezwane neemfuno zobomi benkonzo yokugqwala kokusingqongileyo?
Njengoko sonke sisazi, ubukhulu be-hot-dip galvanizing bubaluleke kakhulu kumgangatho kunye nobuchwepheshe be-umbhobho wesikwere oqinisiweyo, enxulumene nokhuseleko kunye nokuqina kwesakhiwo. Nangona kukho imigangatho yesizwe neyengcali, ubukhulu be-zinc coating obungenamfaneleko benkxaso buseyingxaki yobuchwepheshe ebanzi yenkxaso.
Inkqubo ye-hot-dip galvanizing yinkqubo yokulungisa umphezulu wentsimbi ezinzileyo nethembekileyo yokumelana nokugqwala kwendalo. Zininzi izinto ezichaphazela i-hot-dip galvanizing, njengokwakheka kwe-substrate yentsimbi, imeko yangaphandle (njengoburhabaxa), uxinzelelo lwangaphakathi lwe-substrate, kunye nobukhulu obuhlukeneyo. Ngexesha lale nkqubo, ubukhulu be-substrate bunempembelelo enkulu kubukhulu be-hot-dip galvanizing. Ngokubanzi, okukhona ipleyiti ityebile, kokukhona ubukhulu be-hot-dip galvanizing bukhulu. Inkxaso enobukhulu be-2.0mm ithathwa njengomzekelo ukubonisa ukuba kufuneka ubukhulu obungakanani be-zinc coating ukuze kwaneliswe iimfuno zobomi benkonzo yokugqwala kwendalo.
Masithi ubukhulu bezinto ezisisiseko sokuxhasa yi-2mm, ngokwemigangatho eqhelekileyo ye-GBT13192-2002 hot galvanizing.
Bungakanani ubukhulu bomaleko we-galvanized wepayipi yesikwere ye-galvanized efunekayo ukuze kuhlangatyezwane neemfuno zobomi benkonzo?
Umbhobho wesikwere ogqunyiweyo
Ngokweemfuno zomgangatho wesizwe, ubukhulu bezinto ezisisiseko ze-2mm akufuneki bube ngaphantsi kwe-45 μ m. Ubukhulu obufanayo akufuneki bube ngaphantsi kwe-55 μ m. Ngokweziphumo zovavanyo lokuvezwa emoyeni olwenziwe yi-Japanese Hot Dip Galvanizing Association ukususela ngo-1964 ukuya ku-1974. Bungakanani ubukhulu be-galvanized layer yombhobho wesikwere we-galvanized efunekayo ukuhlangabezana neemfuno zobomi benkonzo?
Ukuba ibalwe ngokwemigangatho yesizwe, umxholo we-zinc yi-55x7.2=396g/m2,
Ubomi benkonzo obufumaneka kwiindawo ezine ezahlukeneyo bumalunga noku:
Indawo yemizi-mveliso enzima: iminyaka eyi-8.91, kunye nenqanaba lokugqwala lonyaka eliyi-40.1;
Ummandla wonxweme: iminyaka engama-32.67, kunye nenqanaba lokugqwala lonyaka eliyi-10.8;
Iingubo zangaphandle: iminyaka engama-66.33, kunye nenqanaba lokugqwala lonyaka eliyi-5.4;
Indawo yasezidolophini: iminyaka engama-20.79, kunye nenqanaba lokugqwala lonyaka eliyi-17.5
Ukuba ibalwe ngokwexesha lenkonzo ye-photovoltaic leminyaka engama-25
Emva koko ulandelelwano lweendawo ezine luncinci:
1002.5270135437.5, okt 139 μ m, 37.5 μ m, 18.75 μ m, 60.76 μ m.
Ngoko ke, ukuze kusasazwe iindawo zasezidolophini, ubukhulu be-zinc coating kufuneka bube yi-65 μ M bufanelekile kwaye buyimfuneko, kodwa kwiindawo zoshishino ezinzima, ingakumbi ezo zine-asidi kunye ne-alkali corrosion, kucetyiswa ukuba ubukhulu be-galvanized square pipe kunye ne-zinc coating bufanele bongezwe ngokufanelekileyo.
Ixesha lokuthumela: Septemba-21-2022
