DIN 30670-1yog txheej txheem peb txheej extrusion uas tsim cov polyethylene (3 LPE) txheej nyob rau saum npoo ntawm longitudinally los yog kauv welded thiabseamless steel kavlos tiv thaiv lawv ntawm corrosion.
Nws yog tsuas yog siv nyob rau hauv faus los yog submerged piping systems rau kev thauj mus los ntawm cov kua los yog gases.
Lus Cim: DIN 30670 tau muab faib ua ob ntu hauv xyoo 2024 tshiab nyob ntawm cov txheej txheem tsim khoom, uas yog DIN 30670-1 npog hose thiab lub qhov txhab extruded polyethylene coatings, thiab DIN 30670-2 npog sintered thiab nplaim tshuaj tsuag hom.
Lawv muab faib ua ob hom raws li qhov ntsuas kub tsim, uas yogntaus N thiab ntaus S.
| Hom | Qhov kub thiab txias (°C) |
| N | -20 rau + 60 |
| S | -40 rau + 80 |
thiabTS EN ISO 21809-1sib raug rau chav kawm A thiab chav kawm B, feem.
1st txheej Epoxy resin txheej, epoxy resin hmoov yuav tsum tau siv.
2nd Adhesive txheej, uas tuaj yeem ua hmoov lossis extruded coated.
3rd txheej Polyethylene txheej, txheej txheem raj extrusion, los yog winding extrusion txheej txheem.
Tube Extrusion:
Hauv cov txheej txheem no, cov khoom siv polyethylene yog extruded ncaj qha mus rau hauv ib daim ntawv txuas mus ntxiv, uas yog tom qab ntawd muab tso rau hauv cov yeeb nkab steel.
Txoj kev no feem ntau yog siv rau cov kav dej me me thiab ua kom muaj kev sib luag thiab txuas ntxiv ntawm cov txheej.
Winding extrusion:
Nyob rau hauv cov txheej txheem no, cov polyethylene yog extruded nyob rau hauv daim ntawv ntawm ib tug sawb thiab ces kis mus rau saum npoo ntawm cov yeeb nkab steel.
Txoj kev no yog tsim rau cov kav dej loj lossis cov kav dej tsis zoo thiab tso cai rau cov txheej txheem yooj yim dua rau ntawm cov kav dej lossis cov kav dej loj.
Nyob ntawm qhov kev xav tau tshwj xeeb ntawm qhov project, ib txheej ntxiv ntawm kev tiv thaiv kev tiv thaiv tuaj yeem ntxiv rau 3LPE.
Cov khoom siv feem ntau suav nrogpob zeb(saib ISO 21809-5),iav fiber reinforced yas, los yog cement mortar(saib DN N 30340-1).
Txhawm rau kom muaj zog shear zoo, nws yog ib qho tsim nyog yuav tsum tau ntxhib los yog nias rau saum npoo ntawm polyethylene.
Xws li kev kho mob yuav pab ua kom cov adhesion ntawm cov txheej tiv thaiv ntxiv thiab txheej txheej polyethylene.
Epoxy Resin Txheej Thickness
Yam tsawg kawg 80um.
Adhesive Txheej Thickness
Yam tsawg kawg 150um.
Tag nrho Txheej Thickness
Nyob ntawm seb lub nominal txoj kab uas hla ntawm cov yeeb nkab steel, lub thickness ntawm corrosion tiv thaiv txheej yuav txawv.
Rau tag nrho cov tuab ntawm 3LPE txheej, DIN 30670-1 faib peb chav kawm los tiv thaiv kev tsim kho sib txawv.n,v, s.
Qib n: Rau tej yam kev mob, lub thickness ntawm qib n feem ntau yog txaus.
Rau txheej txheej ntawm polyethylene, lub thickness ntawm 1 hli yog siv feem ntau rau kev tiv thaiv corrosion, thaum lub thickness ntxiv yog siv los txhim kho cov neeg kho tshuab load-cov kabmob muaj peev xwm ntawm cov txheej txheem tiv thaiv.
Qib v: Yog tias cov khoom siv thauj khoom nce ntxiv (kev thauj mus los, khaws cia, tso, tshwj xeeb zoo, yuav tsum tau nce), qhov tsawg kawg nkaus txheej thickness yuav tsum tau nce 0.7 hli, piv txwv li v = n + 0.7 hli.
Qib s: Tshwj xeeb txheej thicknesses siab tshaj v kuj tuaj yeem pom zoo raws li cov kev xav tau ntawm ib qhov project tshwj xeeb, thiab cov txheej txheem txheej thicknesses tau sau npe raws li Qib s.
150mm ± 20mm, lub kaum sab xis rau txheej thickness yuav tsum tsis pub tshaj 30 °.
Cov epoxy thiab cov nplaum nplaum yuav tsum tau muab tshem tawm tsawg kawg 80 hli ntawm cov yeeb nkab kawg.Lub epoxy txheej yuav tsum tau sab laug protruding los ntawm polyethylene-coated yeeb nkab kawg los ntawm tsis tsawg tshaj li 10 hli.
Txhawm rau txiav txim siab qhov ntev, ntsuas los ntawm cov hauv paus hniav ntawm cov yeeb nkab mus rau qhov pib ntawm kab pheeb ces kaum txiav kawg ntawm txheej txheej tiv thaiv corrosion.
General Defects
Me imperfections thiab kev puas tsuaj rau saum npoo ntawm cov hlau tsis ncav cuag.
Qhov nyob rau sab saum toj txheej ntawm PE;
Cov cheeb tsam me me uas tsis tiav;
Kev suav nrog thiab huab cua npuas hauv txheej saum toj kawg nkaus;
Adhesion ntawm cov khoom txawv teb chaws;
Deg abrasion;
Me me dents nyob rau hauv lub txheej.
Cov kev raug mob me no raug tso cai kho thiab tsis muaj kev txwv rau thaj chaw uas tuaj yeem kho tau.
Kev mob hnyav
Txheej kev puas tsuaj yog ncaj nraim rau saum npoo ntawm cov yeeb nkab steel.
Lub cheeb tsam ntawm tus kheej yuav tsum tau kho yuav tsum tsis pub tshaj 10 cm².Qhov tso cai tus naj npawb ntawm qhov tsis xws luag yuav raug kho yog 1 qhov tsis xws luag ntawm 1 meter ntawm cov yeeb nkab ntev.Txwv tsis pub, cov yeeb nkab yuav tsum tau sau tseg.
TS EN ISO 21809-1: Tshwj xeeb rau sab nraud peb-txheej extruded polyethylene thiab polypropylene (3LPE thiab 3LPP) coatings rau steel kav siv nyob rau hauv kev sib kis systems nyob rau hauv cov roj thiab roj kev lag luam.
CSA Z245.21: Qhia tshwj xeeb rau sab nraud polyethylene anticorrosion txheej rau steel yeeb nkab siv hauv cov tshuab conveyor.
AWM C215: Sab nrauv polyethylene anti-corrosion txheej haum rau cov kav dej.Txawm hais tias tsuas yog siv rau cov dej xa dej, nws muaj ntau yam nrog DIN 30670 hais txog cov khoom siv thiab kev siv tshuab.
Peb tab tom nrhiav rau pem hauv ntej los koom tes nrog koj los muab cov yeeb nkab steel zoo tshaj plaws thiab cov txheej txheem tiv thaiv corrosion rau koj cov haujlwm.Thov koj xav tiv tauj peb kom paub meej cov khoom lag luam ntxiv, peb zoo siab los pab koj nrhiav qhov zoo tshaj plaws steel yeeb nkab xaiv rau koj cov kev xav tau!
