I-ISO 21809-1isebenza ezinhlelweni zamapayipi agqitshwe noma acwiliswe embonini kawoyela negesi futhi icacisa izidingo zezingubo zokuvikela ukugqwala zangaphandleI-3LPE kanye ne-3LPPngobaamapayipi ensimbi ahlanganisiwe futhi angenamthungo.
Kunezinhlobo ezintathu zezinto zokwakha ubuso, kuye ngohlobo lwezinto zokwakha ubuso:
A: I-LDPE (i-polyethylene ephansi);
B: I-MDPE/HDPE (i-polyethylene enobukhulu obuphakathi)/(i-polyethylene enobukhulu obuphezulu);
C: I-PP (i-Polypropylene).
Izidingo zobuningi bezinto zokwakha zichazwe ngokuningiliziwe esigabeni esilandelayo mayelana nezidingo zezinto zokwakha ezintathu.
| Ikilasi lokumboza | Izinto ezingqimba eziphezulu | Izinga lokushisa lomklamo (°C) |
| A | I-LDPE | -20 kuya ku-+60 |
| B | I-MDPE/HDPE | -40 kuya ku-+80 |
| C | PP | -20 kuya ku-+ 110 |
Uhlelo lokumboza kufanele lube nezingqimba ezintathu:
Isendlalelo sokuqala: i-epoxy (uketshezi noma i-powder);
Isendlalelo sesibili: inhlaka;
Isendlalelo sesithathu: Isendlalelo esiphezulu se-PE/PP sisetshenziswa yi-extrusion.
Uma kudingeka, uboya obuqinile bungasetshenziswa ukuze kwandiswe ukumelana nokushelela. Ikakhulukazi lapho kudingeka ukubamba okuthuthukisiwe kanye nengozi encishisiwe yokushelela.
Ubukhulu Besendlalelo Se-Epoxy Resin
Ubuningi obungu-400 um
Ubuncane: I-epoxу yoketshezi: ubuncane obungama-50um; I-FBE: ubuncane be-125um.
Ubukhulu Besendlalelo Esinamathelayo
Ubuncane be-150um emzimbeni wepayipi
Ubukhulu Bokumboza Okuphelele
Izinga lokujiya kwesendlalelo sokulwa nokugqwala liyashintshwa ngomthwalo wendawo kanye nesisindo sepayipi,kanye nezinga lokujiya kwengqimba yokulwa nokugqwala kufanele kukhethwe ngokuya ngezimo zokwakha, indlela yokubeka amapayipi, izimo zokusebenzisa, kanye nosayizi wamapayipi.
I-PM isisindo sepayipi lensimbi ngemitha.
okungabuzwa ngokubheka i-ithebula lesisindo sendinganiso yepayipi lensimbi, noma ngefomula:
I-Pm=(DT)×T×0.02466
U-D ububanzi obungaphandle obucacisiwe, obuvezwa ngo-mm;
U-T ubukhulu bodonga obucacisiwe, obuvezwa ngo-mm;
Izidingo Zezinto Ezihlanganisiwe
Izidingo Zezinto Ezinamathelayo
Izidingo ze-PE/PP Top Layer
Inqubo yokulwa nokugqwala ingahlukaniswa cishe kanje:
1. Ukulungiswa kwendawo;
2. Isicelo sokumboza
3. Ukupholisa
4. Ukunciphisa
5. Ukumaka
6. Ukuhlolwa komkhiqizo oqediwe
1. Ukulungiswa Komphezulu
Izidingo ezifanayo zitholakala ezindinganisweni ze-SSPC kanye ne-NACE, futhi okulandelayo kuyindlela yokuxhumana evamile:
| I-ISO 8501-1 | I-NACE | I-SSPC-SP | Ukuqokwa |
| NgoMgqibelo 2.5 | 2 | 10 | Ukuhlanza insimbi ecishe ibe mhlophe |
| uMgqibelo 3 | 1 | 5 | Ukuhlanza insimbi emhlophe |
Sicela uqaphele ukuthi umphumela we-Sa 2.5 awuzinzile kuye ngokuthi izinga lokugqwala kwepayipi lensimbi lingakanani, elihlukaniswe ngo-A, B, C, no-D, okuhambisana nemiphumela emi-4.
2. Isicelo Sokumboza
Qinisekisa ukuthi izinga lokushisa lokushisa kwangaphambilini kanye nesivinini somugqa wepayipi lensimbi enqubweni yokumboza kufanelekile ukuze kufezwe ukuqiniswa okugcwele kwengubo yempuphu nokuqinisekisa ukunamathela kwengubo kanye nokulawula ukujiya kwengubo.
Ubukhulu besendlalelo sokuvikela ukugqwala buhlobene nemingcele yemishini yokumboza.
3. Ukupholisa
Isembozo esisetshenzisiwe kufanele sipholiswe kuze kufike ekushiseni okuvimbela umonakalo wokuphatha ngesikhathi sokuqeda nokuhlola kokugcina.
Ngokuvamile, izinga lokushisa lokupholisa elingu-3LPE alidluli ku-60℃, kanti izinga lokushisa lokupholisa elingu-3LPP lizoba phezulu kancane.
4. Ukunciphisa
Ubude obuthile bokumboza kufanele bususwe kuzo zombili izinhlangothi zepayipi futhi ungqimba lokuvikela ukugqwala akufanele lubekwe nge-engeli engaphezu kuka-30° ukuvimbela umonakalo ongaba khona embozweni wokuvikela ukugqwala ngesikhathi sokushisela.
5. Ukumaka
Ukuhambisana nezindinganiso kanye nezidingo zamakhasimende.
Lezi zimpawu kufanele zifakwe isitembu noma zipendwe ukuqinisekisa ukuthi izinhlamvu zicacile futhi azifiphali.
6. Ukuhlolwa Komkhiqizo Oqediwe
Ukuhlolwa okuphelele kwamapayipi okulwa nokugqwala aqediwe ukuze kuhlangatshezwane nezidingo ze-ISO 21809-1.
Izicelo ze-3LPE
Izembozo ze-3LPE zinikeza ukumelana okuphezulu kwamakhemikhali, ukuvikelwa okuhle kakhulu kwemishini kanye nokuqina okuhle, kanye nezindleko eziphansi zokulungisa.
Ifanele amapayipi agqitshwe noma angaphansi kwamanzi adinga ukumelana nokugqwala okuphezulu kanye nokuvikelwa kwemishini ezindaweni zenhlabathi namanzi.
Isetshenziswa kakhulu ezinhlelweni zamapayipi ukuze kuthuthwe uwoyela, igesi namanzi.
Izicelo ze-3LPP
Izembozo ze-3LPP zinokumelana nokushisa okuphezulu kanye nokuqina kwamakhemikhali okuhle kakhulu kune-polyethylene. Kodwa-ke, zingaqhekeka emazingeni okushisa aphansi.
Ifanele amazinga okushisa aphezulu kanye nezindawo ezidinga kakhulu, njengokufaka amapayipi ezindaweni ezishisayo noma eduze kwezindawo zokucubungula amakhemikhali.
Ngokuvamile kusetshenziswa ezinhlelweni zamapayipi kawoyela negesi lapho kudingeka khona ukusebenza okushisa okuphezulu.
I-DIN 30670: Ukwembozwa kwe-polyethylene kwamapayipi ensimbi kanye nezinto zokufaka.
Lena indinganiso yemboni yaseJalimane eqondene ngqo nezembozo ze-polyethylene zamapayipi ensimbi kanye nokufakwa kwawo.
I-DIN 30678: Izimbozo ze-polypropylene ezisemapayipini ensimbi.
Uhlelo lokumboza nge-polypropylene ngqo lwamapayipi ensimbi.
I-GB/T 23257: Izindinganiso zobuchwepheshe bokumboza nge-polyethylene epayipini lensimbi eligqitshwe phansi.
Lena indinganiso kazwelonke eShayina ehlanganisa ubuchwepheshe bokumboza i-polyethylene yamapayipi ensimbi agqitshwe phansi.
I-CSA Z245.21: Izimbozo zangaphandle ezifakwe esitshalweni zepayipi lensimbi.
Lena indinganiso ye-Canadian Standards Association (CSA) ecacisa izidingo zezingubo zangaphandle ze-polyethylene ezisetshenziselwa ukuvikela ipayipi lensimbi.
Ukumbozwa komkhiqizo okuphelele: Sinikeza ukukhethwa okubanzi kwamapayipi ensimbi yekhabhoni kusukela kuma-alloy ayisisekelo kuya kwasezingeni eliphezulu ukuze kuhlangatshezwane nezidingo zakho ezahlukahlukene.
Isiqinisekiso sekhwalithi ephezulu: Yonke imikhiqizo ihambisana nezindinganiso zekhwalithi zomhlaba wonke, njenge-ISO 21809-1, eziklanyelwe ngqo izidingo zokulwa nokugqwala kwemboni kawoyela negesi.
Isevisi eyenziwe ngokwezifiso: Asigcini nje ngokuhlinzeka ngemikhiqizo ejwayelekile, kodwa kuye ngezidingo zephrojekthi kanye nezimo zemvelo, izembozo zokulwa nokugqwala kanye namapayipi ensimbi kungenziwa ngezifiso ukuqinisekisa ukusebenza kahle kanye nokusebenza kahle kwezindleko.
Usekelo lobuchwepheshe kanye nesevisi yamakhasimende: Ithimba lethu lochwepheshe linikeza iseluleko sobuchwepheshe kanye nokusekela ukusiza amakhasimende ukuthi akhethe izixazululo ezifanele kakhulu zamapayipi ensimbi kanye nezixazululo zokulwa nokugqwala ukuqinisekisa ukuqaliswa ngempumelelo kwamaphrojekthi abo.
Impendulo esheshayo kanye nokulethwa: Njengoba sinempahla enkulu kanye nohlelo lokuthutha olusebenzayo, siyakwazi ukuphendula ngokushesha ezidingweni zamakhasimende futhi siqinisekise ukulethwa ngesikhathi.
Silangazelela ukubambisana nawe ukukunikeza izixazululo zepayipi lensimbi elisezingeni eliphezulu kanye nezixazululo zokumboza ezilwa nokugqwala kumaphrojekthi akho. Sicela uzizwe ukhululekile ukuxhumana nathi ukuthola imininingwane eyengeziwe yomkhiqizo, siyajabula ukukusiza ukuthola inketho yepayipi lensimbi engcono kakhulu yezidingo zakho!
