Amathangi Ensimbi Egalvanizedi Ekuvikelweni Kokugqwala Kwe-Hdg Emanzi Nokugcinwa Okomile
Kwadalwa ngo 09.02
Amathangi Ensimbi E-Galvanized Ane-HDG Corrosion Protection Yamanzi Nokugcinwa Okomile
Amathangi ensimbi e-galvanized avikela insimbi ngesenzo sokuzidela esikhundleni sokuba yisithiyo. I-hot dip galvanizing ngokwe-GB/T 13912-2020 igcoba iphaneli nge-zinc, ebola ngaphambi kwensimbi futhi igcine ngisho ne-flange edweshile ivikelwe. I-HDG iyonga futhi ishesha ukufakwa emanzini ahlanzekile okugcina umlilo, amanzi emvula, kanye nokugcinwa kwezinto ezomile, futhi iyimpendulo efanele esabelweni esincane uma isabelomali sincane. Akuyona impendulo ye-asidi enamandla, i-alkali enamandla, i-chloride ephezulu noma noma yimuphi umsebenzi wokuthinta ukudla, lapho ukuhamba kwe-zinc nokuhlaselwa kwe-pitting kuyikho okukhipha ngaphandle. Lapho i-chemistry inolaka, i-glass-fused-to-steel noma i-fusion bonded epoxy yangaphakathi kwiqokobhe elifanayo lensimbi iyindlela ehlukile.
Yonke indlela yokuvikela ukugqwala yenza isivumelwano. Ama-coatings athembisa ukugcina amanzi kude nensimbi; i-galvanizing ithembisa ukwamukela umonakalo ngokwayo futhi igcine insimbi iphila ngaphansi. Kweminye imisebenzi yamanzi nokugcinwa okomile leso sivumelwano siyintengo engcono kakhulu etholakalayo, kanti kweminye siyisicu. Ithimba lokuthenga eliqhathanisa amathangi ensimbi e-galvanized anokuvikelwa kwe-HDG ne-thangi yensimbi enamaglasi ancibilikisiwe ngokuvamile lilinganisa izindleko zokuqala nesikhathi sokusebenza oketshezini oluthile nesimo sezulu esithile. Lesi sihloko sichaza lapho i-hot dip galvanizing inqoba khona, lapho yehluleka khona, nokuthi ungayicacisa kanjani ukuze umkhumbi wenze lokho umnikazi akulindele. Kushejuli yokuqhathanisa lokho kuvela njengamathangi ensimbi e-galvanized ukuvikelwa kwe-HDG yokugqwala kwamanzi nokugcinwa okomile kulinganiswa ne-thangi yensimbi enamaglasi ancibilikisiwe emsebenzini ofanayo.
Indlela i-HDG evikela ngayo insimbi
I-Zinc iyazidela, ngakho imihuzuko ayiyona indawo yokwehluleka. Amaphaneli ahlanjululwa, afakwe i-flux futhi acwiliswe ku-zinc encibilikisiwe, okukhiqiza ungqimba lwe-alloy olunamathela ensimbi kanye nongqimba lwangaphandle lwe-zinc, okwenziwa ngokwe-GB/T 13912-2020 ngobukhulu bongqimba obuhlobene nobukhulu bodonga. Ngenxa yokuthi i-zinc iyi-anodic ensimbini, umhuzuko noma umphetho ogugile ku-flange uqhubeka uvikele insimbi eveziwe ngogesi kuze kube yilapho i-zinc yendawo isetshenzisiwe. Leyo mpawu iyona eyenza ithangi eline-galvanized libekezelele ukulimala kokusingathwa okuthathwa yilona lonke ithangi endaweni.
Umkhawulo ulandela ngqo kuleyo mpahla efanayo. Ku-electrolyte ene-asidi enamandla noma i-alkali enamandla, i-zinc iyasabela futhi ingene esixazululweni, ngakho indawo yokumboza iyancipha futhi insimbi iyavela. Emanzini ane-chloride ephezulu, njengamanzi olwandle noma i-brine yokuqeda iqhwa, ukugqwala okugxilile kuhlasela i-zinc ngokushesha kunokuba ikwazi ukuzivikela. Futhi emsebenzini wamanzi okuphuza noma wokuthinta ukudla, ukufuduka kwe-zinc emanzini akwamukeleki ngaphandle kwesistimu yokumboza egunyaziwe ehlukile.
Incazelo Yezobuchwepheshe
Ipharamitha | Inani Elijwayelekile / Ibanga | Qaphela |
Inqubo yokumboza | i-hot dip galvanizing | GB/T 13912-2020 |
Indlela yokuvikela | i-sacrificial zinc anode | Iyabekezelela imihuzuko e-flange |
Uketshezi olufanele | amanzi ahlanzekile, amanzi emvula, i-dry bulk | Umsebenzi wokugcina amanzi ongabizi |
Gwema | asidi enamandla, alkali enamandla, i-chloride ephezulu | I-zinc iyasabela noma igqwale ngokushesha |
Gwema | okuphuzwayo nokuthinta ukudla | Ukuhamba kwe-Zinc akwamukeleki |
Iphaneli namabhawudi | ~1.2 m amaphaneli, amabhawudi ezinga le-8.8 | Ukuhlanganiswa okuboshiwe nge-EPDM gasket |
Ukuhlolwa kwe-coating | okubonakalayo, ukujiya, ukunamathela ngokwestandadi | Kurekhodwe ngaphambi kokuthunyelwa |
Isikhathi sokuphila komklamo | Iminyaka engu-30 noma ngaphezulu ngomsebenzi ofanele | Kuncike oketshezini nesimo sezulu |
Okunye ukufakwa | i-enamel noma i-FBE ku-carbon steel | Lapho i-chemistry inolaka |
Lapho i-HDG iyimpendulo efanele
Encane, ihlanzekile, ibhekelela isabelomali, futhi ifinyeleleka kalula ukuze ilungiswe. Ithangi le-galvanized iyisinqumo esingabizi kakhulu samanzi omlilo anevolumu elinganiselayo lapho amanzi ehlanzekile futhi indawo ingekho ogwini lolwandle, ithangi lokugcina amanzi emvula endaweni ekude, kanye nomgqomo wempahla eyomile noma wokudla okusanhlamvu lapho umkhiqizo womile futhi okukhathazayo isimo sezulu hhayi amakhemikhali. Futhi iyashesha ukuhlanganiswa, ngoba amaphaneli e-galvanized aboshwe ngezibophezelo awakhi sihloko esimanzi endaweni futhi akukho ukulinda kokoma kwe-sihloko endaweni, futhi iqembu labasebenzi lincane.
Izimo zezulu zasogwini nezokubanda zinciphisa icala. Umoya ogcwele usawoti namanzi ane-chloride kunciphisa impilo, futhi esimweni sezulu esibandayo i-zinc coating kanye nanoma yikuphi ukulungiswa kwe-coating kunezinkinga zokushisa kanye nokusetshenziswa okufanele kube semthethweni. Esizeni sasogwini impendulo engcono ngokuvamile iyithangi le-glass-fused-to-steel noma ingaphakathi le-fusion bonded epoxy, ngoba i-enamel iphatha i-chloride kangcono kakhulu futhi ayidingi ukuphinda igcotshwe.
I-Galvanized uma iqhathaniswa ne-GFS emanzini
Isinqumo kimistry, ibhajethi kanye nokuthanda ukuhlolwa. Ithangi lensimbi elihlanganiswe nengilazi linengqimba ye-enamel engu-0.25 kuya ku-0.45 mm ehlanganiswe ensimbini ku-820 kuya ku-930 °C, elinganiswa ngaphezu kuka-3,450 N/cm², ihlolwe nge-spark ku-1500 V DC kuzo zonke izingxenye, ngobukhulu obungaphansi kuka-Ra 0.8 µm, futhi ingathwala isitifiketi samanzi aphuzwayo esidingwa iphrojekthi. Kubiza kakhulu ekuqaleni futhi iyisinqumo esifanele lapho uketshezi lunolaka, lapho kukhona i-chloride, lapho kudingeka ukuhambisana namanzi aphuzwayo, noma lapho umnikazi efuna umthwalo wokuhlolwa ophansi kakhulu esikhathini seminyaka engamashumi amathathu.
I-Galvanized iyawina ngezindleko zokuqala nasekulula ukulungiswa ensimini, futhi yanele ngempela emanzini ahlanzekile nasekugcinweni okomile. Indlela yayo yokunakekela ihlukile kunokuba imbi kakhulu: hlela ukuhlolwa kwe-coating ngesikhathi sokuvalwa komsebenzi, gcina ukudonsa kwamanzi nezimo ze-gasket zilungile, futhi ulindele ukuthi i-coating inciphe phakathi namashumi eminyaka emanzini kunokuba yehluleke ngokushesha.
Icala Lomklamo
Iphrojekthi | Indawo | Umkhiqizo | Umthamo | Ububanzi |
Ithangi lamanzi omlilo eline-galvanized | IRiphabhulikhi yaseCongo | Ithangi lensimbi eline-galvanized | 566 m³ | ukuhlinzeka, indawo yokugcina amanzi omlilo |
Ithangi lamanzi omlilo eline-galvanized | IGuinea | Ithangi lensimbi eline-galvanized | 1,983 m³ | ukuhlinzeka, indawo yokugcina amanzi omlilo |
Ithangi lamanzi ophuzwayo elikhulu | Namibia | Ithangi le-GFS | 44,900 m³ | ukuhlinzeka + ukugada, lapho i-chloride nokuhambisana namanzi okuphuza kubusa khona |
Amandla Obunjiniyela be-Center Enamel
I-Center Enamel (Shijiazhuang Zhengzhong Technology Co., Ltd) isungule futhi yakha amathangi okugcina axhunywe ngamabhawudi kusukela ngo-2008. Njengomkhiqizi wokuqala wamathangi e-glass-fused-to-steel (GFS) eChina, inkampani inamalungelo obunikazi acishe abe ngu-200 ahlobene ne-enamel, ikhiqiza cishe amapuleti ensimbi ane-enamel angu-300,000 ngonyaka, isiqedile amaphrojekthi afakiwe angaphezu kuka-30,000 futhi ihlinzeka ngamathangi ayo emazweni angaphezu kwe-100. Isizinda esisha sokukhiqiza esingu-150,000 m² sengezwe ukuze kunyuswe amandla okukhiqiza, futhi amathangi angawodwa ahlinzekwa afinyelela ku-60,000 m³. Ukukhiqiza kusebenza ngaphansi kwe-ISO 9001 ne-ISO 45001, ngesitifiketi somkhiqizo esihlanganisa i-NSF/ANSI 61, WRAS, FDA, LFGB, CE (EN 1090), ISO 28765, FM, BSCI ne-EUROCODE, futhi idizayini ibhekisela ku-AWWA D103-09, AWWA C550 ne-NFPA lapho uhlelo ludinga khona.
Okokugcina amanzi kanye nokugcina okomile lokhu kuhlanganisa inketho ye-HDG kuya ku-GB/T 13912-2020 kanye nenye indlela ehlanganisiwe ye-enamel encibilikisiwe noma i-fusion bonded epoxy lining eshubhuni elifanayo lensimbi eliboshiwe, kanye ne-gasket, ibhawudi kanye nemininingwane yesisekelo edingwa umsebenzi.
Imibuzo Evame Ukubuzwa
Umbuzo 1: Uyini umehluko phakathi kwensimbi ye-galvanized ne-glass-lined?
Impendulo 1: I-galvanizing ivikela insimbi ngokuzidela nge-zinc, ngakho imihuzuko iqhubeka nokuvikela; i-glass lining iyingqimba ye-inert ehlanganisiwe, ngakho indawo ayisebenzisani noketshezi nhlobo. I-glass ilungele imisebenzi enolaka kanye nokuphuzwayo, i-galvanizing ilungele amanzi ahlanzekile kanye nezinto ezomile ngokomnotho.
Umbuzo 2: Ingabe ithangi le-galvanized lingagcina amanzi okuphuza?
A2: Hhayi ngqo emsebenzini wokuhambisana nokuphuzwayo, ngenxa yokuhamba kwe-zinc. Kuyamukeleka kweminye imisebenzi yamanzi ahlanzekile angaphuzwayo; emanzini okuphuza cacisa ukufakwa kwe-lining enesitifiketi esidingekayo, njenge-NSF/ANSI 61 noma i-WRAS.
Q3: I-HDG ayifaneleki kuphi?
A3: I-asidi enamandla, i-alkali enamandla, amanzi ane-chloride ephezulu namanzi olwandle, kanye nanoma yimuphi umsebenzi wokuthinta ukudla. Kuleyo misebenzi sebenzisa i-glass-fused-to-steel, i-fusion bonded epoxy noma ingxube ye-stainless.
Q4: Ingabe ithangi le-galvanized liyabekezelela ukuklwejwa?
A4: Yebo, lokho kuyinzuzo enkulu. I-Zinc i-anodic kunsimbi, ngakho umphetho we-flange ogugile noma iphaneli eklwejiwe igcina ukuvikelwa kwe-electrochemical kuze kube yilapho i-zinc yendawo isetshenzisiwe.
Q5: I-coating ihlolwa kanjani?
A5: Ukuhlolwa okubonakalayo, ukugqama kwengubo kanye nokuhlolwa kokunamathela ngokwe-GB/T 13912-2020, kurekhodwa ngephaneli ngayinye ngaphambi kokuthunyelwa, kanye nokuhlolwa okujwayelekile kwe-torque yebhawodi kanye ne-gasket ekuhlanganiseni.
Q6: Ingabe ithangi le-galvanized elibhawodiwe lingandiswa?
A6: Yebo. Amaringi engeziwe noma iyunithi yesibili ingengezwa, futhi amaphaneli athunyelwa ngendlela ehlangene, okufanele izindawo ezikude ezinamandla amancane e-crane.
Q7: Isikhathi sokusebenza esilindelekile siyini?
A7: Iminyaka engamashumi amathathu noma ngaphezulu emsebenzini ofanele, kodwa qaphela ukuthi emanzini i-zinc iyancipha phakathi namashumi eminyaka, ngakho hlela ukuhlolwa kwe-coating ngesikhathi sokuvalwa komsebenzi esikhundleni sokulindela ukwehluleka kwesivikelo.
Amathangi ensimbi e-galvanized anokuvikelwa kwe-HDG ngokwe-GB/T 13912-2020 ayimpendulo engabizi futhi ekwazi ukumelana nomonakalo yokugcina amanzi ahlanzekile omlilo, amanzi emvula kanye nezinto ezomile eziningi. Ubuthakathaka bawo bubuthakathaka bekhemistri: i-asidi enamandla, i-alkali enamandla kanye ne-chloride ephezulu konke kuhlasela i-zinc ngokushesha kunokuba ikwazi ukuvikela, futhi ukuhambisana namanzi okuphuza akutholakali ngaphandle kwesembozo esihlukile. Lapho uketshezi lunolaka, igobolondo elifanayo lensimbi eliboshiwe eline-enamel ehlanganisiwe noma i-fusion bonded epoxy yangaphakathi linikeza umgoqo weminyaka engamashumi amathathu esikhundleni salokho. Nquma ngoketshezi kanye nezinga le-chloride kuqala, bese kuba isabelomali. Thumela umsebenzi kanye nekhemistri yamanzi edeskini yobunjiniyela ukuze uthole isincomo kanye nephakethe lamadokhumenti.
Khuluma Nonjiniyela
Thumela idatha yesitoreji ukuze kubuyekezwe i-galvanizing: umthwalo, amanzi noma i-dry bulk, uketshezi kanye ne-pH yalo kanye ne-chloride content, imfuneko yokuphuzwayo kanye nesitifiketi, isimo sezulu sasogwini noma esibandayo, umthamo wethangi kanye nemikhawulo yobubanzi, ibanga lesabelomali kanye nezimo zendawo. Sizobuyisela isincomo se-coating phakathi kwe-HDG ne-GB/T 13912-2020 kanye negobolondo eline-fused enamel noma i-epoxy lined, ukulinganisa, isethi yamaphaneli namabhawodi, i-gasket kanye nemininingwane yesisekelo, kanye nephakethe eliphelele ledokhumenti yethenda. Ukubuyekezwa kobunjiniyela kuqala, akunasibopho.
WhatsApp