AWWA C213 simbi yemvura pombiiFBE coating inoiswa mukati nekunze kwepaipi yesimbi kuti ishandiswe pasi pevhu kana pasi pemvura masisitimu epombi emvura.
Ichi chivharo chinopa dziviriro kubva mukuora uye inovimbisa kushanda kwakavimbika kwepombi system kwenguva yakareba munzvimbo dzepasi pevhu kana pasi pemvura.
Pipe yekunze dhayamita ≥ 660mm [24in] .Epoxy resin lining nekuwana pombi yekuongorora nekugadzirisa.
Simbi pombi madhayamita <660mm [24in] inogonawo kukodzera, chero paine nzira yakakodzera yekutarisa kuvimbika kwemukati mukati.
Fusion Bonded Epoxy (FBE)chinhu chimwe-chikamu chakaoma cheupfu thermosetting epoxy resin iyo, kana yakashandiswa nekupisa, inogadzira kemikari inogadzirisa pamusoro pepombi yesimbi ichichengetedza maitiro ayo.
Iyo epoxy poda ichave nechinhu chimwe-chakabatanidzwa musanganiswa chakasungirirwa zvinhu zvinosanganisira epoxy resin, kurapa mumiririri, catalyst, filler, colorant, kuyerera kuyerera, uye UV inhibitor.
Zvishandiso zvichaenderana nezvinodiwa neSafe Drinking Water Act.
Kana kutevedza kweNSF kuchidikanwa, zvinhu zvinosangana nemvura inonwiwa zvinozopihwa chitupa kuNSF/ANSI/CAN Standard 61.
Kazhinji, iyo yakanyanya kupisa tembiricha yekuputira inenge65°C (150°F).Uyezve, hupenyu hwebasa hwekuputira hunoderedzwa nekuchengetedza kupisa kwakanyanya kwenguva yakareba.
Kana yaiswa kuzvinhu zvakafayirwa ne electrostatic spraying, fluidized bed kana air spraying uye zvobva zvaporeswa, epoxy powder inogadzira yunifomu inodzivirira.
Specific operations ndezvi:
Kuongorora kwepombi uye Pre-kurapwa
Pamusoro pacho pachange pasina hurema hunokanganisa chigadzirwa chekupedzisira, senge burrs, gouges, uye weld spatters, izvo zvinogona kubviswa nejecha.
uye pamusoro pacho pachange pasina madhaka, pendi yeguyo, wakisi, tara yemarasha, asphalt, mafuta, girisi, machlorides, uye chero chinhu chipi zvacho chekunze kana zvinosvibisa zvinobvira zvinogona kubatidza pakusanganiswa bonded epoxy application tembiricha.Bvisa makwapa anooneka emafuta uye girizi nekupukuta nemushonga unosiya pasina chasara.
Kugadzirira Kwepamusoro
Shandisa jecha rakaoma kuchenesa ngura kubva papombi yesimbi.
Kuputika Kwenzvimbo Zvinodiwa: Kana tembiricha yepombi yesimbi iri 3°C (5℉) pamusoro petembiricha yedova.
Kucheneswa Kwepamusoro: Pamusoro pepombi yesimbi yakaderedzwa ichave maererano neSSPC-SP10/NACE Nha.
Kushata Kwepamusoro: Kudzika kwezviyo zveAnchor muhuwandu hwe51-102 μm (2.0-4.0 mil) yakayerwa zvinoenderana neASTM D4417.Izvi zvinogona kuyerwa neanchor pattern topper kana anchor pattern metre.
Kushata kwepamusoro kwakadzika zvakanyanya kana kudzika zvakanyanya kuchakanganisa kuita kweiyo yekupedzisira FBE coating.
Ongorora: Ndokumbira utarise kupindirana kwenguva pakati pekupedzwa kwekudzika uye maitiro ekuputira kuti udzivise kupisa kwemwenje.
Air Cleaning
Mhepo isina kusvibiswa-isina yakadzvanywa ichashandiswa kuridza huruva, grit, kana imwe nyaya yekune dzimwe nyika kubva kune yakagadzirirwa substrate yepombi nenzira isingakanganise nzvimbo yakacheneswa, imwe pombi yakacheneswa, kana pombi ichavharwa kana kuiswa mutsetse.
Pipe Kupisa
Kupisa simbi pombi uchishandisa chitubu chinopisa chisingafaniri kusvibisa pamusoro pepombi, asi haifaniri kudarika 274°C (525°F).
Tembiricha yepamusoro inogona kushandura hunhu uye kusimba kwesimbi.
Kupisa kwepamusoro kwepombi yesimbi kunogona kuyerwa uchishandisa thermometer peni kana calibrated optical thermometer.
Kana ruvara rwebhuruu rukaitika, pombi inofanira kutonhodzwa kusvika kune ambient tembiricha uye kuputika zvakare.
Coating Process
FBE hupfu inoiswa zvakafanana pamusoro pepombi inodziya yesimbi nemubhedha unonyunguduka, electrostatic spraying, kana kupfapfaidza mweya.
Grooves, beveled, kana midzi midzi haifanirwe kuve FBE yakavharwa.
Kana majoini ane rubber-gasketed kana ma mechanical couplings akashandiswa, iyo epoxy inoenda kumagumo epombi kunze kwekunge yatsanangurwa neimwe nzira nemutengi.
Kutonhora
Kutonhodza kunogona kuitwa nemhepo kana mvura.
PQT: Tenga AWWA C213 Water Transmission Steel Pipe muhuwandu hudiki hwekuedzwa usati watenga huwandu hukuru.Prequalification kana kuyedzwa kunoitwa kuti ive nechokwadi chekuti chigadzirwa kana system inosangana nemhando chaiyo uye maitiro ekuita.
Izvi zvinosanganisira kuyedzwa kwema laboratori, kuongororwa kwekuita, uye mamwe maitiro.
Zvitarisiko
Iyo epoxy inowanzova yakatsetseka.
Iyo epoxy haizove nemablister, makatsemuka, mabubbles, delamination, kana humwe hurema hunooneka.
Kusakwana kwekuzora, senge sags, dimpling, scuffing, curtaining, overspray, uye/kana orenji-peel, hazvizonzi chikonzero chekurambwa kana kugadzirisa.
Kuongorora kwemagetsi kwekuenderera mberi (yakaderera-voltage yezororo bvunzo)
Coating kuenderera kunofanirwa kutariswa zvinoenderana neNACE SPO490.
For liningsine hukobvu hwemakumi maviri mils (508 um) kana pasi, yakaderera-voltage yezororo detector yakaiswa pahupamhi hwe 75 V ichashandiswa zvinoenderana neNACE SPO188.
Kana nhamba yezororo ichipfuura nhamba iri pasi pejasi inoda kubviswa uye kugadzirwazve.
Kunze kwedhayamita (OD) <14in (360 mm), 1 zororo/mita (3 ft).
Kunze kwedhayamita (OD) ≥ 14in (360 mm), zororo 1/25 ft² (2.3 mm²).
Tora mazororo akaongororwa, agadzirise, uye aedze zvakare.
Adhesion
Kunamira kwepoxy yakaporeswa pamusoro pepombi inogona kuwanikwa nekusundidzira blade inopinza kuburikidza ne epoxy pamusoro pepombi uye kushandisa kufambisa kwekurima mukuedza kubvisa epoxy kubva pamusoro pepombi.
Iyo epoxy inofanira kunyatsonamira papombi papombi zvakasimba kuramba basa rekurima uye isava nemarara uye inosangana neadhesion chiyero che 1-3.
Ukobvu
Ukobvu hwefirimu yekuputira yakarapwa haifanire kunge iri pasi pe305um (12mil), kusanganisira weld seams.
Muchinyorwa chekare cheAWWA C213, pakanga pane muganhu we406 um (16 mils) yakakura yekuputira ukobvu, iyo yakabviswa mune yazvino vhezheni nekuda kwekuomerwa kwekuwana ichi chinodiwa panguva chaiyo yechizvarwa process.
Miedzo Yokuwedzera
Miedzo yekuwedzera inogona kutsanangurwa kuti uone kushanda kweiyo epoxy.
1. Cross-section porosity.
2. Interface porosity.
3. Thermal analysis (DSC).
4. Permanent strain (bendability).
5. Mvura nyoro.
6. Impact.
7. Cathodic disbondment test.
Ichave yakanyorwa zvakajeka nezita remugadziri, mhando yezvinhu, batch kana nhamba yejeti, zuva rekugadzira, uye kuchengetedza mamiriro.
Zvikuru zvepombi dzemvura
Mabhati ekunze anowanzo shandiswa kuchengetedza mapaipi kubva mukuora kwezvakatipoteredza, nepo mukati mawoko anoshandiswa kudzivirira kusvibiswa kwemvura, kuderedza frictional resistance, uye kuwedzera hupenyu hwepombi.Aya mabhanhire anobatsira kuve nechokwadi chekuvimbika uye kusimba kwepombi masisitimu, kutevedzera hutsanana, uye kuderedza kudiwa kwekuchengetedza.
ANSI/AWWA C203: Coal-Tar Protective Coatings uye Linings yeSimbi Mvura Pipe.
ANSI/AWWA C209: Tape Coatings yeSimbi Mvura Pipe uye Fittings.
ANSI/AWWA C210: Liquid-Epoxy Coatings uye Linings yeSimbi Mvura Pipe uye Fittings.
Botop Steel ndeyepamusoro-mhando WeldedCarbon Steel Pipemugadziri uye mutengesi kubva kuChina, zvakare isina musono simbi pombi stockist.
Botop Steel ine kuzvipira kwakasimba kune mhando uye inoshandisa kwakasimba kudzora uye kuyedzwa kunechengetedza kuvimbika kwechigadzirwa.Chikwata chayo chine ruzivo chinopa zvigadziriso zvemunhu uye rutsigiro rwenyanzvi, nekutarisa kugutsikana kwevatengi.Tinotarisira kushanda newe.
