Ukuqina kwe-coating kanye nezindinganiso zamapayipi e-epoxy

Uma kuziwa ekuvikeleni amapayipi ezindaweni ezinokhahlo, i-epoxy coated carbon steel amapayipi gqama njengokukhetha okuphezulu. Lawa mapayipi ahlanganisa amandla ensimbi ye-carbon kanye nokumelana nokugqwala kwe-epoxy coatings, okuwenza afaneleke ezimbonini ezihlukahlukene, okuhlanganisa uwoyela negesi, ukuhlinzekwa kwamanzi, kanye nokukhiqizwa kwezimboni. Ukuqonda ukujiya koqweqwe olufanele kanye namazinga afanelekile kubalulekile ekuqinisekiseni ubude besikhathi nokusebenza kwala mapayipi. Lo mhlahlandlela obanzi uhlola ubunkimbinkimbi bokujiya kwe-coating, amazinga emboni, kanye nomthelela wawo ekuqineni kwamapayipi.

Ubukhulu obuphelele bezinto ezihlukene zamapayipi

I-FBE Coating Thickness for Carbon Steel Pipes

Izembatho ze-Fusion-bonded epoxy (FBE) zisetshenziswa kakhulu kumapayipi ensimbi ye-carbon ngenxa yokunamathela kwawo okuhle kakhulu kanye nezakhiwo zokuvikela ukugqwala. Ugqinsi olufanele lwezingubo ze-FBE kumapayipi ensimbi ye-carbon ngokuvamile lusukela ku-14 kuya ku-16 mils (350 kuya ku-400 micrometers). Lokhu ukujiya kunikeza umgoqo oqinile omelene nezinto ezibolayo kuyilapho ugcina ukuguquguquka nokumelana nokuqhekeka.

Ukuthola izicelo ezidinga kakhulu, njengamapayipi angasogwini noma izindawo ezishisa kakhulu, i-FBE ewugqinsi efika ku-20 mils (500 micrometer) ingase icaciswe. Lezi zimbotshana eziwugqinsi zinikeza ukuvikeleka okuthuthukisiwe ekulimaleni kwemishini nokuhlaselwa kwamakhemikhali, okunweba impilo yesevisi yamapayipi ezimeni ezimbi kakhulu.

Izinketho ze-Epoxy Lining for Ductile Iron Pipes

Amapayipi e-iron Ductile ngokuvamile adinga i-epoxy linings yangaphakathi ukuze avimbele ukugqwala nokugcina izinga lamanzi. Ugqinsi olunconyiwe lwe-epoxy linings kumapayipi ensimbi edonsayo lusukela ku-8 kuya ku-12 mils (ama-micrometer angama-200 kuye kwangama-300). Lokhu ukujiya kunikeza ukuvikeleka okwanele ngenkathi kunciphisa ukuncishiswa kobubanzi bepayipi.

Ezindaweni ezinolaka noma lapho impilo yesevisi eyandisiwe idingeka, ungqimba oluqinile olungafika ku-16 mils (400 micrometer) lungasetshenziswa. Lezi linings eziqinile zinikeza ukumelana okuthuthukisiwe kokuhuzuka nokuhlaselwa kwamakhemikhali, okwenza epoxy camera steel pipe ilungele izinhlelo zokusebenza zezimboni kanye nezinhlelo zokuhlanza amanzi angcolile.

Ukucatshangelwa kokuqina kokuqina kwamapayipi e-LSAW

Amapayipi we-Longitudinal Submerged Arc Welded (LSAW), avame ukusetshenziswa kumaphrojekthi wamapayipi anobubanzi obukhulu, adinga ukucatshangelwa ngokucophelela kokujiya kokumboza. Kumapayipi e-LSAW, ukujiya okunconyiwe kwe-FBE okunconyiwe kuvame ukusuka ku-16 kuye ku-20 mils (ama-micrometer angu-400 kuya kwangu-500). Lokhu kushuba okukhulayo kubangela amazinga aphezulu engcindezi kanye namandla okulimala komshini ngesikhathi sokufakwa nokusebenza kwamapayipi anobubanzi obukhulu.

Ezindaweni ezisebenza phesheya kwezilwandle noma ezindaweni ezinokucindezeleka okuphezulu kwenhlabathi, ukumbozwa kwezingqimba eziningi kungase kusetshenziswe kumapayipi e-LSAW. Lezi zinhlelo ngokuvamile zihlanganisa isendlalelo sesisekelo se-FBE, esilandelwa ungqimba olunamathelayo kanye ne-polyethylene topcoat. Ubukhulu obuphelele balezi zingqimba ezinezingqimba eziningi bungafinyelela ku-4 mm, bunikeze isivikelo esiphakeme ekugqwaleni, ekulimaleni komshini, nezici zemvelo.

Amazinga Omkhakha: I-NACE vs. Izinkombandlela ze-AWWA

I-National Association of Corrosion Engineers (NACE) RP0394 indinganiso ihlinzeka ngemihlahlandlela ebanzi yokusetshenziswa nokusebenza kwezimbotshana ze-epoxy ezihlanganisiwe kumapayipi ensimbi. Leli zinga lichaza izidingo ezithile zokulungiswa kwendawo, ukusetshenziswa kokumboza, nezinyathelo zokulawula ikhwalithi.

Ngokuya nge-NACE RP0394, ubuncane befilimu eyomile obujiyile bokuzimboza kwe-FBE akufanele bube ngaphansi kwama-mils angu-12 (ama-micrometer angu-300). Izinga liphinde licacise ukuhlukahluka kogqinsi okwamukelekayo, nobukhulu obukhulu obungeqile ku-140% wogqinsi olushiwo. Lezi zidingo ziqinisekisa ukufana nokuvumelana ekusebenzeni kokumboza kulo lonke uhlelo lwamapayipi.

I-AWWA C210: I-Liquid Epoxy Coating Systems

Izinga le-American Water Works Association (AWWA) C210 ligxile ezinhlelweni zokumboza eziwuketshezi ze-epoxy zangaphakathi nangaphandle zamapayipi amanzi ensimbi. Leli zinga lisebenza ikakhulukazi ekufakweni kwamanzi aphuzekayo futhi licacisa izidingo eziqinile zezinto zokumboza nezinqubo zokufaka isicelo.

I-AWWA C210 incoma ubukhulu befilimu eyomile obuncane obungu-16 mils (ama-micrometer angu-400) ezimbotsheni ze-epoxy eziwuketshezi ezifakwe ngaphandle kwamapayipi amanzi ensimbi. Ngezingubo zangaphakathi, indinganiso icacisa ubukhulu obuncane be-12 mils (300 micrometers). Lezi zidingo zokujiya ziqinisekisa ukuvikeleka okwanele ekugqwaleni futhi zigcina ikhwalithi yamanzi ezinhlelweni zokusabalalisa.

Ukuqhathanisa ne-NACE kanye namazinga we-AWWA we-Pipe Coatings

Ngenkathi zombili i-NACE RP0394 kanye ne-AWWA C210 zinikeza imihlahlandlela ebalulekile ukumbozwa kwe-epoxy, ziyahlukahluka ekugxileni nasekusetshenzisweni kwazo. I-NACE RP0394 ikhathazeke ngokuyinhloko ngezingubo ze-FBE zokusetshenziswa ezimbonini okuvamile, okuhlanganisa amapayipi kawoyela negesi. Ngokuphambene, i-AWWA C210 iqondisa ngokuqondile ukumbozwa kwe-epoxy okuwuketshezi kumapayipi amanzi.

Umehluko owodwa oyinhloko yizidingo zokujiya ezincane. I-NACE RP0394 ivumela ukunamathela okuzacile kancane (12 mls) uma kuqhathaniswa ne-AWWA C210 (i-16 mils yezingubo zangaphandle). Lo mehluko ukhombisa izinto ezibalulekile nezimo zokusebenza ezihlukene ezimbonini ezahlukene. Onjiniyela bephrojekthi kufanele bacabangele ngokucophelela lawa mazinga lapho becacisa izimfuneko zokumboza zezinhlelo zabo zokusebenza ezithile.

Umthelela Wokuqina Kokunamathela Ekuphileni Okude Kwepayipi

Ugqinsi lwezingubo ze-FBE ludlala indima ebalulekile ekunqumeni izinga lokuvikela ukugqwala elinikezwa amapayipi ensimbi. Izimbobo eziwugqinsi ngokuvamile zinikeza isivikelo esithuthukisiwe sesithiyo, sinciphisa amathuba okuba izinto ezibolayo zifike endaweni yepayipi. Kodwa-ke, ubudlelwano phakathi kogqinsi bokujiya nokuvikela ukugqwala abuhlali buqondile.

Izembatho ze-FBE ezizacile (12-14 mils) zinganikeza ukuvikeleka okwanele ezindaweni ezinolaka futhi zinganikeza ukuguquguquka okungcono kanye nokumelana nokuqhekeka ngesikhathi sokuphatha ipayipi nokufakwa. Izembatho eziwugqinsi (16-20 mils) zihamba phambili ezindaweni ezinokhahlo, ezinikeza ukumelana okuphezulu nokuhlaselwa kwamakhemikhali nokulimala kwemishini. Ukukhetha phakathi kwezingubo ezincanyana neziwugqinsi kuncike ezintweni ezifana nezimo zenhlabathi, amazinga okushisa okusebenza, nempilo yesevisi elindelekile.

Izakhiwo Zemishini Zokujiya Kwejazi Le-Epoxy Ehlukahlukene

Ugqinsi lwe-coating luphinde luthinte izakhiwo zemishini zesendlalelo se-epoxy, sibe nomthelela ekhonweni laso lokumelana nezingcindezi ezingokomzimba ngesikhathi sokuthuthwa kwamapayipi, ukufakwa, nokusebenza. Ama-coating ashubile ngokuvamile anikeza ukumelana komthelela okuthuthukisiwe nokuvikelwa okungcono ekuhunyushweni. Kodwa-ke, ama-coatings aminyene ngokweqile angase abe brittle futhi athambekele ekuqhekekeni ngaphansi kokuguquguquka okukhulu kwezinga lokushisa noma ingcindezi yokugoba.

Ugqinsi olulungile lokunamathela lulinganisa amandla emishini nokuguquguquka. Ezinhlelweni eziningi, ububanzi obuyi-14-18 mils buhlinzeka ngokuvumelana okuhle phakathi kokuqina nokuvumelana nezimo ezihlukahlukene zokufaka nokusebenza.

Ukuhlaziywa Kwezindleko-Inzuzo Yokwenyuka Kokuqina Kokunamathela

Nakuba izimbotshana eziwugqinsi zinikeza ukuvikeleka okuthuthukisiwe, futhi ziza nezindleko eziphakeme zempahla nesicelo. Ukuhlaziywa kwezindleko nenzuzo kubalulekile lapho kunqunywa ukujiya koqweqwe olufanele lwephrojekthi ethile. Izinto okufanele zicatshangelwe zihlanganisa izindleko zokuqala zokumboza, impilo yesevisi elindelekile, izimfuneko zokunakekelwa, kanye nezindleko zesikhathi sokuphumula ezingaba khona ezihlobene nokwehluleka kwamapayipi.

Ezimweni eziningi, izindleko ezengeziwe ze-coating eqinile zilungiswa impilo yesevisi eyandisiwe kanye nezidingo ezincishisiwe zokunakekelwa. Kumaphrojekthi engqalasizinda abalulekile noma amapayipi asebenza ezindaweni ezinokhahlo, izinzuzo zesikhathi eside zokumbozwa okuqinile zivame ukudlula ukutshalwa kwezimali kokuqala. Kodwa-ke, ngezinhlelo zokusebenza ezingafuneki kangako, ukujiya okunesizotha kakhudlwana kungase kunikeze ukuvikeleka okwanele ngezindleko eziphansi.

Ukukhetha ugqinsi olufanele lokugqoka i-epoxy coated carbon steel amapayipi kuyisinqumo esibalulekile esithinta ukuphila isikhathi eside, ukusebenza, kanye nokuphumelela kwezindleko zezinhlelo zamapayipi. Ngokucubungula ngokucophelela izindinganiso zemboni, izici zemvelo, kanye nezidingo ezithile zephrojekthi, onjiniyela nabaphathi bephrojekthi bangathuthukisa imininingwane yabo yokumboza amapayipi. Kungakhathaliseki ukuthi kusebenzisana namanethiwekhi okusabalalisa amanzi, amapayipi kawoyela negesi, noma izinhlelo zokusebenza zezimboni, ukuqonda okuphelele kokuqina kwe-coating kuqinisekisa ukuvikeleka okungcono kakhulu kokutshalwa kwezimali kwengqalasizinda ebalulekile.

I-China Epoxy Coated Carbon Steel Pipe Factory

I-Hebei Longma Group igqame njengabaholayo umenzi wamapayipi ensimbi e-epoxy camera, enikeza ikhwalithi ephezulu nezixazululo eziphelele zezidingo zezimboni ezihlukahlukene. Isikhungo sethu sesimanjemanje sinemishini yokukhiqiza ethuthukisiwe evela eJalimane, ehambisana nemigqa yokukhiqiza emine ethuthukiswe ngokuzimela. Ngeqembu labasebenzi abanekhono abangaphezu kuka-300, okuhlanganisa nochwepheshe bezobuchwepheshe abangu-60+ nethimba locwaningo lwemishini elizinikele, siqinisekisa ikhwalithi engenakuqhathaniswa nokuqanjwa okusha kuyo yonke imikhiqizo.

Ukuzibophezela kwethu ekusebenzeni kahle kubonakala ezikhungweni zethu zokuhlola ezibanzi, ezinemishini yokubona amaphutha e-inthanethi esebenza ngokuzenzakalelayo kanye nethelevishini ye-X-ray yezimboni yokulawula ikhwalithi ngokuqinile. Siyaziqhenya ngokulethwa okusheshayo, esinekhono lokuqeda ukukhiqizwa kwepayipi lensimbi eliwugqinsi phakathi nezinsuku eziyi-7. I-Hebei Longma Group iphethe uhla oluphelele lwezitifiketi, okuhlanganisa i-API 5L, ISO 9001, ISO 14001, FPC, kanye nezitifiketi ze-Environmental Quality System, eziqinisekisa ukuthotshelwa kwezindinganiso zomhlaba wonke.

Izintengo zethu ezincintisanayo zifinyelelwa ngokusebenzisana kwesikhathi eside nabahlinzeki bempahla yokusetshenziswa, izindawo zokukhiqiza ezivuthiwe, kanye nemodeli edidiyelwe eyenza izindleko zibe ngcono ngaphandle kokubeka engcupheni ikhwalithi. Kumapayipi ensimbi ekhabhoni ekhwalithi ephezulu ahlangabezana namazinga e-API 5L, ASTM A53, EN10210, kanye ne-AS/NZS 1163, anezinketho zokumboza ezithobela i-DIN 30670, DIN30678, CSAZ245.20, EN10339, ISO21809-1, AW2 nathi ku-C21809-1, AW2, AW2, kanye ne-AW2 info@longma-group.com.Amapayipi ethu atholakala ngamadayimitha angaphandle asuka ku-60.3mm kuya ku-1422mm nogqinsi lwezindonga ukusuka ku-6.02mm kuya ku-50.8mm, abhekelela uxhaxha lwezinhlelo zokusebenza zezimboni.