AWWA C213 umbhobho wamanzi wentsimbilutyatyazo lwe-FBE olusetyenziswa ngaphakathi nangaphandle kwimibhobho yentsimbi ukuze isetyenziswe kwiinkqubo zemibhobho yamanzi ephantsi komhlaba okanye ephantsi kwamanzi.
Olu gquba lubonelela ngokhuseleko ekudlekeni kwaye luqinisekisa ukusebenza okuthembekileyo kwenkqubo yemibhobho ixesha elongeziweyo kwindawo engaphantsi komhlaba okanye ephantsi kwamanzi.
Umbhobho wangaphandle ububanzi ≥ 660mm [24in] .I-epoxy resin lining kunye nokufikelela kumbhobho ukuze kuhlolwe kwaye kugcinwe.
Iimitha zepayipi yensimbi <660mm [24in] nazo zinokufaneleka, ngaphandle kokuba kukho indlela efanelekileyo yokujonga ukunyaniseka kwengubo yangaphakathi.
I-Fusion Bonded Epoxy (FBE)yinto enye-inxalenye eyomileyo yomgubo we-thermosetting epoxy resin ethi, xa iqhutywe ngubushushu, idala ukusabela kweekhemikhali kumphezulu wombhobho wensimbi ngelixa igcina iimpawu zayo.
Umgubo we-epoxy uya kuba nesixhobo esidityanisiweyo esine-epoxy resin, i-ejenti yokunyanga, i-catalyst, i-filler, i-colorant, i-arhente yokulawula ukuhamba, kunye ne-UV inhibitor.
Izixhobo ziya kuhambelana neemfuno zeUMthetho waManzi okuSela aKhuselekileyo.
Xa kufuneka ukuthotyelwa kwe-NSF, imathiriyeli edityaniswe namanzi okusela iya kuqinisekiswa kuMgangatho we-NSF/ANSI/CAN 61.
Ngokuqhelekileyo, ubushushu besicelo esiphezulu sezinto zokugquma bumalunga65°C (150°F).Ngaphezu koko, ubomi benkonzo yokwambathisa buncitshiswe ngokugcina amaqondo obushushu aphezulu ixesha elide.
Xa isetyenziswe kumanqaku afudunyeziweyo ngokutshiza nge-electrostatic, ibhedi ene-fluidized okanye ukutshiza umoya kwaye emva koko iphiliswe, i-epoxy powder ivelisa i-coating efanayo yokukhusela.
Imisebenzi ethile yile ilandelayo:
Ukuhlolwa kwemibhobho kunye nonyango lwangaphambili
Umphezulu awuyi kuba naziphene ezichaphazela imveliso yokugqibela, efana ne-burrs, gouges, kunye ne-weld spatters, enokususwa ngokusasaza.
kwaye umphezulu awusayi kuba nodaka, ipeyinti yokusila, umthwebeba, itela yamalahle, itela, ioli, igrisi, iikloridi, kunye nayo nayiphi na into yangaphandle okanye izingcolisi ezinokutsha ezinokuvutha ngokudityaniswa kobushushu besicelo se-epoxy.Susa amabala abonakalayo eoli kunye negrisi ngokusula nge-solvent engashiyi ntsalela.
Ukulungiswa komphezulu
Sebenzisa i-sandblasting eyomileyo ukucoca umhlwa ongaphezulu kumbhobho wentsimbi.
Iimfuno zokusiNgqongileyo zokuqhushumba: Xa ubushushu bombhobho wentsimbi buyi-3°C (5℉) ngaphezu kobushushu bendawo yombethe.
Ukucoceka koMphezulu: Umphezulu wepayipi yensimbi ehlanjululweyo iya kuhambelana ne-SSPC-SP10 / NACE No.
Uburhabaxa boMphezulu: Ubunzulu beenkozo ze-Anchor kuluhlu lwe-51-102 μm (2.0-4.0 mil) lulinganiswa ngokuhambelana ne-ASTM D4417.Oku kunokulinganiswa ngomphezulu wepateni ye-ankile okanye imitha yepateni ye-ankile.
Uburhabaxa bomphezulu obunzulu kakhulu okanye obunzulu kakhulu buya kuchaphazela ukusebenza koqweqwe lokugqibela lweFBE.
Qaphela: Nceda uqaphele isithuba sexesha phakathi kokugqitywa kokwehla kunye nenkqubo yokwaleka ukunqanda ukurusa kweflash.
Ukucoca Umoya
Umoya ocinezelweyo ongenazingcolisi uya kusetyenziselwa ukuvuthela uthuli, i-grit, okanye enye into yangaphandle evela kwi-substrate elungisiweyo yombhobho ngendlela engachaphazeli umgangatho ocociweyo, omnye umbhobho ocociweyo, okanye umbhobho oza kugqunywa okanye ufakwe umgca.
Ukufudumeza kombhobho
Umbhobho wensimbi yokufudumala usebenzisa umthombo wokushisa ongafanele ungcolise ubuso bombhobho, kodwa akufanele udlule i-274 ° C (525 ° F).
Amaqondo obushushu aphezulu anokuguqula iipropati ezibonakalayo kunye neempawu zokuqina kwentsimbi.
Ubushushu bomphezulu wombhobho wentsimbi bunokulinganiswa kusetyenziswa ipeni yethemometha okanye ithemometha ye-calibrated optical.
Ukuba umbala oluhlaza okwesibhakabhaka uvela, umbhobho kufuneka upholiswe kwiqondo lokushisa eliphantsi kwaye uphinde uqhume.
Inkqubo yokwaleka
Umgubo we-FBE ugalelwa ngokufanayo kumphezulu wombhobho wentsimbi eshushu ngokunyibilikisa ibhedi, ukutshiza nge-electrostatic, okanye ukutshiza ngomoya.
Iigrooves, i-beveled, okanye imiphezulu yeengcambu mayingagqunywa yi-FBE.
Xa i-rubber-gasketed joints okanye i-mechanical couplings isetyenzisiwe, i-epoxy iya kunabela ekupheleni kombhobho ngaphandle kokuba kuchazwe ngenye indlela ngumthengi.
Ukupholisa
Ukupholisa kunokwenziwa ngomoya okanye ngamanzi.
PQT: Thenga i-AWWA C213 Water Transmission Pipe ngomlinganiselo omncinci wokulinga ngaphambi kokuthenga ubuninzi.Ukufaneleka kwangaphambili okanye uvavanyo lwenziwa ukuqinisekisa ukuba imveliso okanye inkqubo ihlangabezana nemigangatho ethile kunye neendlela zokusebenza.
Oku kubandakanya uvavanyo lwebhubhoratri, uvandlakanyo lokusebenza, kunye nezinye iinkqubo.
Imbonakalo
I-epoxy iya kuba mpuluswa ngokubanzi.
I-epoxy ayiyi kuba namadyunguza, iintanda, amaqamza, i-delamination, okanye ezinye iziphene ezibonakalayo.
Ukungafezeki kwezithambiso, okufana ne-sags, i-dimpling, i-scuffing, i-curtaining, i-spray, kunye / okanye i-orenji-peel, ayiyi kuthathwa njengesizathu sokwaliwa okanye ukulungiswa.
Ukuhlolwa kombane ukwenzela ukuqhubeka (uvavanyo lweholide ephantsi-voltage)
Ukuqhubekeka kokwambathisa kufuneka kuhlolwe ngokuhambelana ne-NACE SPO490.
Kuba liningskunye nobukhulu be-20 mils (508 um) okanye ngaphantsi, i-low-voltage holiday detector ebekwe kubuninzi be-75 V iya kusetyenziswa ngokuhambelana ne-NACE SPO188.
Ukuba inani leeholide lidlula inani elingezantsi kwengubo kuya kufuneka isuswe kwaye iphinde yenziwe.
Ngaphandle kobubanzi (OD) <14in (360 mm), iholide ye-1 / imitha (3 ft).
Idayamitha yangaphandle (OD) ≥ 14in (360 mm), iholide e-1/25 ft² (2.3 mm²).
Thatha iiholide ezihloliweyo, uzilungise, kwaye uzivavanye kwakhona.
Ukuncamathela
Ukubambelela kwi-epoxy ephilisiwe kumphezulu wombhobho kunokufezekiswa ngokutyhala i-blade ebukhali nge-epoxy ebusweni bombhobho kunye nokusebenzisa intshukumo yokulima ngokuzama ukususa i-epoxy ebusweni bombhobho.
I-epoxy kufuneka ibambelele ngokupheleleyo kumbhobho kumbhobho ngokuqinileyo ukumelana nesenzo sokulima kwaye ukhululeke kwinkunkuma enqabileyo kwaye ihlangabezane neukulinganisa ukunamathela kwe-1-3.
Ukutyeba
Ubukhulu befilimu yokwambathisa enyangisiweyo akufanele ibe ngaphantsi kwe-305um (12mil), kubandakanywa ne-weld seams.
Kwinguqulo yakudala ye-AWWA C213, kwakukho umda we-406 um (i-16 mils) ubukhulu obukhulu be-coating, obuye basuswa kwinguqulo yakamuva ngenxa yobunzima bokuphumeza le mfuneko ngexesha lenkqubo yesizukulwana.
Iimvavanyo ezongezelelweyo
Iimvavanyo ezongezelelweyo zingachazwa ukumisela ukusebenza kwe-epoxy.
1. I-porosity ye-cross-section.
2. I-interface porosity.
3. Uhlalutyo lwe-Thermal (DSC).
4. Uxinzelelo olusisigxina (ukugoba).
5. Ukufunxa amanzi.
6. Impembelelo.
7. Uvavanyo lokuchithwa kweCathodic.
Iza kuphawulwa ngokucacileyo ngegama lomenzi, uhlobo lwemathiriyeli, ibhetshi okanye inombolo yeqashiso, umhla wokwenziwa, kunye neemeko zokugcina.
Ikakhulu kwimibhobho yonikezelo lwamanzi
Iingubo zangaphandle ngokuqhelekileyo zisetyenziselwa ukukhusela imibhobho kwi-corrosion yendalo, ngelixa iingubo zangaphakathi zisetyenziselwa ukuthintela ukungcoliseka kwamanzi, ukunciphisa ukuxhathisa i-frictional, kunye nokwandisa ubomi bombhobho.Ezi zambatho zinceda ukuqinisekisa ukuthembeka kunye nokuqina kweenkqubo zombhobho, ukuthobela imigangatho yococeko, kunye nokunciphisa imfuno yokugcinwa.
ANSI/AWWA C203: I-Coal-Tar yoKhuseleko kunye neeLinings zoMbhobho waManzi wentsimbi.
ANSI/AWWA C209: Iingubo zeTape zoMbhobho waManzi weSteel kunye neFittings.
ANSI/AWWA C210: I-Liquid-Epoxy Coatings kunye neLinings ye-Steel Water Pipe kunye neFittings.
IBotop Steel yiWelded ekumgangatho ophezuluUmbhobho wentsimbi yeCarbonumenzi kunye nomthengisi ovela eChina, naye umbhobho wentsimbi ongenamthungo.
IBotop Steel inokuzinikela okuqinileyo kumgangatho kwaye iphumeza ulawulo olungqongqo kunye novavanyoqinisekisa ukuthembeka kwemveliso.Iqela layo elinamava libonelela ngezisombululo zobuqu kunye nenkxaso yeengcali, kugxilwe ekwanelisekeni kwabathengi.Sijonge phambili ekusebenzeni nawe.
