ISO 21809-1isebenza kumasistimu wamapayipi agqitshiwe noma acwiliswe emanzini embonini kawoyela negesi futhi icacisa izidingo zezingubo zokuvikela ukugqwala kwangaphandle3LPE kanye ne-3LPPokweamapayipi ensimbi ashiselwe futhi angenamthungo.
Kunezigaba ezintathu zezinto ezingaphezulu, kuye ngohlobo lwezinto ezingaphezulu:
A: I-LDPE (i-polyethylene enezinga eliphansi);
B: I-MDPE/HDPE (i-polyethylene ephakathi nendawo)/(i-polyethylene ephezulu kakhulu);
C: PP (Polypropylene).
Izidingo zokuminyana kwempahla ngayinye zichazwe ngokuningiliziwe esigatshaneni esilandelayo ngezidingo zezinto ezintathu zokusetshenziswa.
| Ikilasi lokugqoka | Okubalulekile kwesendlalelo esiphezulu | Izinga lokushisa lomklamo (°C) |
| A | I-LDPE | -20 ukuze + 60 |
| B | I-MDPE/HDPE | -40 ukuze +80 |
| C | PP | -20 ukuze + 110 |
Isistimu yokumboza kufanele ibe nezingqimba ezintathu:
Isendlalelo sokuqala: i-epoxy (uketshezi noma impushana);
Isendlalelo se-2: ingcina;
Isendlalelo sesithathu: PE/PP isendlalelo esiphezulu sisetshenziswa nge-extrusion.
Uma kudingekile, ijazi elimaholoholo lingasetshenziswa ukwandisa ukumelana nokushelela.Ikakhulukazi lapho ukubamba okuthuthukisiwe kanye nengozi encishisiwe yokushelela kudingeka.
I-Epoxy Resin Layer Thickness
Ubukhulu be-400 um
Ubuncane: I-epoxу yoketshezi: ubuncane obungama-50um;I-FBE: ubuncane be-125um.
Ukuqina Kwengqimba Enamathelayo
Ubuncane be-150um emzimbeni wepayipi
Ingqikithi Yokujiya Kokunamathela
Izinga eliwugqinsi lesendlalelo esilwa nokugqwala liyashintshwa ngomthwalo wesayithi nesisindo sepayipi,kanye nezinga eliwugqinsi longqimba olulwa nokugqwala kufanele likhethwe ngokuya ngezimo zokwakha, indlela yokubeka ipayipi, izimo zokusebenzisa, nosayizi wamapayipi.
I-Pm isisindo sepayipi lensimbi ngemitha.
okungase kubuzwe ngokuthintana okuhambisanayoItafula lesisindo sezinga lepayipi lensimbi, noma ngefomula:
Pm=(DT)×T×0.02466
D wububanzi obushiwo bangaphandle, obuvezwa ngo-mm;
T wugqinsi olucacisiwe lodonga, oluvezwa ngo-mm;
Izidingo ze-Epoxy Material
Izimfuneko Zezinto Ezinamathelayo
Izimfuneko Zesendlalelo Esiphezulu se-PE/PP
Inqubo ye-anti-corrosion ingahlukaniswa ngokulandelayo:
1. Ukulungiswa kwendawo;
2. Isicelo sokumboza
3. Ukupholisa
4. Ukunciphisa
5. Ukumaka
6. Ukuhlolwa komkhiqizo kuqedile
1. Ukulungiswa kwendawo
Izidingo ezifanayo zitholakala kumazinga e-SSPC nawe-NACE, futhi okulandelayo ukuxhumana okuvamile:
| ISO 8501-1 | I-NACE | I-SSPC-SP | Ukuqokwa |
| Kusukela 2.5 | 2 | 10 | Ukuhlanza ukuqhuma kwensimbi okuseduze nokumhlophe |
| Sa 3 | 1 | 5 | Ukuhlanza ukuqhuma kwensimbi emhlophe |
Sicela uqaphele ukuthi umphumela we-Sa 2.5 awunqunyelwe ngokuya ngebanga lokugqwala lepayipi lensimbi, elihlukaniswe ngokuthi A, B, C, no-D, elihambisana nemiphumela engu-4.
2. Isicelo sokumboza
Qinisekisa ukuthi ukushisa kwangaphambi kokushisa kanye nesivinini somugqa wepayipi yensimbi enkambweni yokugqoka kufanelekile ukufeza ukuphulukiswa okugcwele kwe-powder coating kanye nokuqinisekisa ukunamathela kokugqoka kanye nokulawula ubukhulu bokugqoka.
Ugqinsi lwesendlalelo sokuvikela ukugqwala futhi luhlobene nemingcele yemishini yokumboza.
3. Ukupholisa
I-coating esetshenzisiwe izopholiswa ekushiseni okuvimbela ukuphatha umonakalo ngesikhathi sokuqeda kanye nokuhlolwa kokugcina.
Ngokuvamile, izinga lokushisa lokupholisa le-3LPE alikho ngaphezu kuka-60 ℃, futhi izinga lokushisa lokupholisa le-3LPP lizoba phezulu kancane.
4. Ukunciphisa
Ubude obuthile bokumboza kufanele bususwe emikhawulweni yomibili yepayipi futhi ungqimba lokuvikela ukugqwala akufanele lubhayibhe nge-engeli engaphezu kuka-30° ukuze kuvinjelwe umonakalo ongaba khona endaweni yokuvikela ukugqwala ngesikhathi sokushisela.
5. Ukumaka
Ukuhambisana namazinga kanye nezidingo zamakhasimende.
Lezi zimpawu kufanele zenziwe nge-stencil noma zipendwe ukuze kuqinisekiswe ukuthi amagama acacile futhi awabuni.
6. Ukuhlolwa Komkhiqizo Okuphelile
Ukuhlolwa okuphelele kwamapayipi aqeda ukugqwala ukuze kuhlangatshezwane nezidingo ze-ISO 21809-1.
3LPE Izinhlelo zokusebenza
Izembatho ze-3LPE zinikeza ukumelana kwamakhemikhali okuphezulu, ukuvikeleka okuhle kakhulu kwemishini kanye nokuqina okuhle, nezindleko zokunakekela eziphansi.
Ilungele amapayipi agqitshiwe noma angaphansi kwamanzi adinga ukumelana nokugqwala okuphezulu kanye nokuvikelwa kwemishini endaweni yenhlabathi namanzi.
Okuvame ukusetshenziswa ezinhlelweni zamapayipi zokuthutha uwoyela, igesi, namanzi.
3LPP Izicelo
Izembatho ze-3LPP zinokumelana kwezinga lokushisa okuphezulu kanye nokuzinza kwamakhemikhali okuhle kakhulu kune-polyethylene.Nokho, ingaba brittle emazingeni okushisa aphansi.
Ifanele amazinga okushisa aphezulu kanye nezindawo ezidinga kakhulu, njengamapayipi ezindaweni ezishisa kakhulu noma eduze nezindawo zokucubungula amakhemikhali.
Ivamise ukusetshenziswa ezinhlelweni zamapayipi kawoyela negesi lapho kudingeka khona ukusebenza kwezinga lokushisa eliphezulu.
I-DIN 30670: Izembatho ze-polyethylene zamapayipi ensimbi nokufakwa.
Lena indinganiso yezimboni yaseJalimane eqondene ngqo nezingubo ze-polyethylene zamapayipi ensimbi nokufakwa kwawo.
I-DIN 30678: Izembatho ze-polypropylene kumapayipi ensimbi.
Polypropylene enamathela uhlelo ngokukhethekile amapayipi ensimbi.
I-GB/T 23257: Izindinganiso zobuchwepheshe bokuhlanganisa i-polyethylene kumapayipi ensimbi angcwatshwe.
Lena indinganiso kazwelonke e-China emboza ubuchwepheshe be-polyethylene enamathela kumapayipi ensimbi agqitshiwe.
I-CSA Z245.21: Izingubo zangaphandle ezifakwe izitshalo zepayipi lensimbi.
Leli izinga le-Canadian Standards Association (CSA) elicacisa izimfuneko zezingubo zangaphandle ze-polyethylene ezisetshenziselwa ukuvikela ipayipi lensimbi.
Ukufakwa komkhiqizo okuphelele: Sinikeza ukukhethwa okubanzi kwamapayipi ensimbi ye-carbon kusukela kusisekelo kuya kuma-alloys athuthukile ukuhlangabezana nezidingo zakho ezihlukahlukene.
Ukuqinisekiswa kwekhwalithi ephezulu: Yonke imikhiqizo ithobela izindinganiso zekhwalithi zamazwe ngamazwe, njenge-ISO 21809-1, eklanyelwe ngokukhethekile izidingo zokunqanda ukugqwala kwemboni kawoyela negesi.
Isevisi eyenziwe ngokwezifiso: Asigcini nje ngokunikeza imikhiqizo ejwayelekile, kodwa kuye ngezidingo zephrojekthi kanye nezimo zemvelo, okokulwa nokugqwala namapayipi ensimbi kungenziwa ngendlela oyifisayo ukuze kuqinisekiswe ukusebenza kahle nokusebenza kahle kwezindleko.
Ukwesekwa kwezobuchwepheshe kanye nesevisi yamakhasimende: Ithimba lethu lochwepheshe linikeza iseluleko sobuchwepheshe nokusekelwa ukusiza amakhasimende akhethe ipayipi lensimbi elifanele kakhulu kanye nezixazululo zokulwa nokugqwala ukuze kuqinisekiswe ukuqaliswa ngempumelelo kwamaphrojekthi abo.
Ukusabela okusheshayo nokulethwa: Nge-inventory enkulu kanye nesistimu ye-logistics ephumelelayo, siyakwazi ukuphendula ngokushesha kuzidingo zamakhasimende futhi siqinisekise ukulethwa ngesikhathi.
Sibheke ngabomvu ukubambisana nawe ukuze sikunikeze ipayipi lensimbi lekhwalithi engcono kakhulu kanye nezixazululo ze-anti-corrosion coating zamaphrojekthi akho.Sicela uzizwe ukhululekile ukuxhumana nathi ukuze uthole imininingwane eyengeziwe yomkhiqizo, siyajabula ukukusiza ukuthi uthole inketho yepayipi yensimbi engcono kakhulu yezidingo zakho!
