ISO 21809-1siv rau cov kav dej faus lossis hauv qab dej hauv kev lag luam roj thiab roj thiab qhia meej txog cov kev cai rau cov txheej txheem tiv thaiv xeb sab nraud.3LPE thiab 3LPPraucov kav hlau welded thiab seamless.
Muaj peb pawg ntawm cov ntaub ntawv surfacing, nyob ntawm seb hom ntaub ntawv surfacing yog dab tsi:
A: LDPE (polyethylene tsawg-density);
B: MDPE/HDPE (polyethylene nruab nrab)/(polyethylene siab);
C: PP (Polypropylene).
Cov kev xav tau ntawm qhov ceev rau txhua yam khoom siv tau piav qhia meej hauv ntu hauv qab no ntawm cov kev xav tau rau peb yam khoom siv raw.
| Chav kawm txheej | Cov khoom siv txheej sab saum toj | Tsim qhov kub thiab txias (°C) |
| A | LDPE | -20 txog + 60 |
| B | MDPE/HDPE | -40 txog + 80 |
| C | PP | -20 txog + 110 |
Lub txheej txheej yuav tsum muaj peb txheej:
1st txheej: epoxy (kua los yog hmoov);
Txheej thib 2: nplaum;
Txheej thib 3: PE/PP txheej sab saud siv los ntawm kev rho tawm.
Yog tias xav tau, yuav muaj ib txheej txheej ntxhib los pleev kom tiv taus kev plam. Qhov tshwj xeeb tshaj yog qhov uas xav tau kev tuav zoo dua thiab txo qhov kev pheej hmoo ntawm kev swb.
Epoxy Resin Txheej Thickness
Siab tshaj plaws 400 um
Yam tsawg kawg nkaus: kua epoxу: yam tsawg kawg 50um; FBE: yam tsawg kawg 125um.
Cov txheej nplaum tuab
Yam tsawg kawg nkaus 150um ntawm lub cev yeeb nkab
Tag Nrho Cov Txheej Txheem Thickness
Qhov tuab ntawm cov txheej tiv thaiv xeb hloov pauv nrog qhov chaw thauj khoom thiab qhov hnyav ntawm cov yeeb nkab,thiab qib tuab ntawm cov txheej tiv thaiv xeb yuav tsum tau xaiv raws li cov xwm txheej kev tsim kho, txoj kev tso yeeb nkab, cov xwm txheej siv, thiab qhov loj ntawm yeeb nkab.
Pm yog qhov hnyav ntawm cov yeeb nkab hlau ib 'meter'.
uas tuaj yeem nrhiav tau los ntawm kev sab laj nrog cov ntaub ntawv sib xwslub rooj hnyav ntawm cov yeeb nkab steel txheem, los yog los ntawm cov qauv:
Pm = (DT) × T × 0.02466
D yog qhov teev tseg sab nraud, qhia hauv mm;
T yog qhov tuab ntawm phab ntsa uas tau teev tseg, qhia hauv mm;
Cov Kev Cai rau Cov Khoom Siv Epoxy
Cov Kev Cai rau Cov Khoom Siv Nplaum
Cov Kev Cai rau PE/PP Sab Saum Toj Txheej
Cov txheej txheem tiv thaiv xeb tuaj yeem faib ua ob pawg:
1. Kev npaj nto;
2. Daim ntawv thov txheej
3. Txias
4. Txiav rov qab
5. Kev cim
6. Kev tshuaj xyuas khoom tiav lawm
1. Kev Npaj Nto
Cov kev cai zoo sib xws pom muaj nyob rau hauv cov qauv SSPC thiab NACE, thiab cov hauv qab no yog kev sib txuas lus dav dav:
| ISO 8501-1 | NACE | SSPC-SP | Lub Npe |
| Sa 2.5 | 2 | 10 | Kev ntxuav hlau ze li dawb |
| Sa 3 | 1 | 5 | Kev ntxuav hlau dawb |
Thov nco ntsoov tias qhov cuam tshuam ntawm Sa 2.5 tsis ruaj khov nyob ntawm qib xeb ntawm cov yeeb nkab hlau, uas yog pawg A, B, C, thiab D, sib raug rau 4 qhov cuam tshuam.
2. Daim Ntawv Thov Txheej
Xyuas kom tseeb tias qhov kub thiab txias ua ntej thiab qhov ceev ntawm cov yeeb nkab hlau hauv cov txheej txheem txheej yog qhov tsim nyog kom ua tiav kev kho tag nrho ntawm cov hmoov txheej thiab kom ntseeg tau tias qhov nplaum ntawm cov txheej nrog rau kev tswj qhov tuab ntawm cov txheej.
Lub thickness ntawm cov txheej tiv thaiv corrosion kuj muaj feem cuam tshuam nrog cov kev ntsuas ntawm cov khoom siv txheej.
3. Txias
Cov txheej txheem pleev xim yuav tsum tau txias kom txog thaum kub uas tiv thaiv kev puas tsuaj thaum lub sijhawm ua tiav thiab kev tshuaj xyuas zaum kawg.
Feem ntau, qhov kub txias ntawm 3LPE tsis pub tshaj 60 ℃, thiab qhov kub txias ntawm 3LPP yuav siab dua me ntsis.
4. Txiav rov qab
Yuav tsum tshem tawm ib qho ntev ntawm cov txheej txheem los ntawm ob sab kawg ntawm cov yeeb nkab thiab cov txheej tiv thaiv xeb yuav tsum tsis txhob raug beveled ntawm lub kaum sab xis ntau tshaj 30 ° kom tiv thaiv kev puas tsuaj rau cov txheej tiv thaiv xeb thaum vuam.
5. Kev cim
Ua raws li cov qauv thiab cov kev xav tau ntawm cov neeg siv khoom.
Cov cim no yuav tsum tau stenciled lossis pleev xim kom ntseeg tau tias cov ntawv sau meej thiab tsis ploj mus.
6. Kev Tshuaj Xyuas Khoom Tiav Lawm
Kev tshuaj xyuas tag nrho ntawm cov kav dej tiv thaiv xeb tiav lawm kom ua tau raws li cov kev cai ntawm ISO 21809-1.
Cov Ntawv Thov 3LPE
Cov txheej txheej 3LPE muaj kev tiv thaiv tshuaj lom neeg zoo, kev tiv thaiv zoo heev nrog rau kev ua kom ruaj khov, thiab cov nqi kho qis.
Nws yog qhov tsim nyog rau cov kav dej faus lossis hauv qab dej uas xav tau kev tiv thaiv corrosion siab thiab kev tiv thaiv tshuab hauv av thiab dej ib puag ncig.
Feem ntau siv rau hauv cov kav dej rau kev thauj mus los ntawm roj, roj av, thiab dej.
3LPP Daim Ntawv Thov
Cov txheej txheej 3LPP muaj kev tiv taus kub dua thiab ruaj khov tshuaj zoo dua li polyethylene. Txawm li cas los xij, nws tuaj yeem tawg yooj yim thaum kub qis.
Haum rau qhov kub thiab txias dua thiab ib puag ncig uas xav tau ntau dua, xws li cov kav dej hauv thaj chaw kub dua lossis ze ntawm cov chaw ua tshuaj lom neeg.
Feem ntau siv rau hauv cov roj thiab cov kav dej roj uas xav tau kev ua haujlwm kub siab.
DIN 30670Cov txheej txheem polyethylene ntawm cov kav dej hlau thiab cov khoom siv.
Qhov no yog tus qauv kev lag luam German tshwj xeeb rau cov txheej polyethylene rau cov kav hlau thiab lawv cov khoom siv.
DIN 30678Cov txheej polypropylene rau ntawm cov kav hlau.
Polypropylene txheej tshuab tshwj xeeb rau cov kav dej hlau.
GB/T 23257Cov qauv siv tshuab polyethylene txheej rau ntawm cov kav dej hlau faus.
Qhov no yog tus qauv hauv tebchaws Suav teb uas suav nrog cov txheej txheem polyethylene rau cov kav dej hlau faus.
CSA Z245.21: Cov txheej txheem sab nraud uas siv rau cov yeeb nkab hlau.
Qhov no yog tus qauv Canadian Standards Association (CSA) uas teev cov kev cai rau cov txheej polyethylene sab nraud siv los tiv thaiv cov yeeb nkab hlau.
Kev them nqi khoom tiavPeb muaj ntau hom kav hlau carbon los ntawm cov hlau yooj yim mus rau cov hlau sib xyaw ua ke kom tau raws li koj cov kev xav tau sib txawv.
Kev lees paub zooTxhua yam khoom ua raws li cov qauv zoo thoob ntiaj teb, xws li ISO 21809-1, uas tau tsim tshwj xeeb rau cov kev xav tau tiv thaiv xeb ntawm kev lag luam roj thiab roj av.
Kev pabcuam tshwj xeeb: Peb tsis yog tsuas muab cov khoom lag luam txheem xwb, tab sis nyob ntawm qhov xav tau ntawm qhov project thiab tej yam kev mob ib puag ncig, cov txheej tiv thaiv xeb thiab cov kav hlau tuaj yeem hloov kho kom ntseeg tau tias muaj kev ua haujlwm zoo tshaj plaws thiab kev siv nyiaj tsawg.
Kev txhawb nqa kev txawj ntse thiab kev pabcuam rau cov neeg siv khoom: Peb pab neeg kws tshaj lij muab cov lus qhia thiab kev txhawb nqa los pab cov neeg siv khoom xaiv cov yeeb nkab hlau thiab cov kev daws teeb meem tiv thaiv xeb zoo tshaj plaws kom ntseeg tau tias lawv cov haujlwm ua tiav.
Teb sai thiab xa khoom saiNrog cov khoom muag ntau thiab cov txheej txheem xa khoom zoo, peb tuaj yeem teb sai rau cov neeg siv khoom xav tau thiab xyuas kom meej tias xa khoom raws sijhawm.
Peb tos ntsoov yuav koom tes nrog koj los muab cov yeeb nkab hlau zoo tshaj plaws thiab cov tshuaj tiv thaiv xeb rau koj cov haujlwm. Thov koj xav tiv tauj peb kom paub ntau ntxiv txog cov khoom, peb zoo siab los pab koj nrhiav cov yeeb nkab hlau zoo tshaj plaws rau koj cov kev xav tau!
