Hauv cov ntawv thov kev lag luam, tshwj xeeb tshaj yog nyob rau hauv cov roj thiab roj, kev ncaj ncees ntawm cov yeeb nkab steel yog qhov tseem ceeb. Ib txoj hauv kev zoo tshaj plaws los xyuas kom lub neej ntev thiab kav ntev ntawm cov kav dej no yog siv cov fusion bonded epoxy (FBE) coatings. Kev nkag siab txog FBE txheej txheej txheem yog qhov tseem ceeb rau txhua tus neeg koom nrog hauv kev yuav khoom, kev teeb tsa lossis kev saib xyuas cov kav dej steel thiab fittings.
FBE coatings yog siv rau ntau hom steel kav, xws li SSAW (Spiral Submerged Arc Welded) kav, ERW (Electric Resistance Welded) kav, LSAW (Longitudinal Submerged Arc Welded) kav, seamless kav, thiab ntau yam fittings xws li lub luj tshib, tees, thiab lwm yam. Lub hom phiaj tseem ceeb ntawm cov txheej txheem no yog los muab kev tiv thaiv corrosion, uas yog qhov tseem ceeb los tswj cov txheej txheem kev ncaj ncees ntawm cov kav dej hauv lub sijhawm ntev.
Dab tsi yogFBE txheej?
FBE txheej yog thermosetting epoxy hmoov siv rau saum npoo ntawm cov yeeb nkab steel. Daim ntawv thov txheej txheem suav nrog cua sov cov yeeb nkab mus rau qhov kub thiab txias thiab tom qab ntawd siv cov hmoov epoxy, uas yaj thiab ua kom muaj kev sib raug zoo nrog cov yeeb nkab steel nto. Cov txheej txheem no tsim cov txheej txheem du, ruaj thiab tshuaj tiv thaiv uas tuaj yeem tiv taus ib puag ncig hnyav.
Qhov tseem ceeb ntawm FBE txheej txheej txheem
Kev ua raws li FBE txheej txheej txheem yog qhov tseem ceeb rau cov laj thawj hauv qab no:
1. Corrosion kuj: Lub luag haujlwm tseem ceeb ntawm FBE txheej yog los tiv thaiv cov hlau los ntawm corrosion. Cov qauv tsim nyog xyuas kom meej tias cov txheej txheem siv tau raug thiab ua tau raws li qhov tsim nyog thickness thiab adhesion yuav tsum tau muab kev tiv thaiv zoo.
2. Kev Pov Hwm Zoo: Los ntawm kev ua raws li cov qauv tsim, cov tuam ntxhab tuaj yeem lav qhov zoo ntawm lawv cov khoom. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau cov tuam txhab uas tsim cov kav hlau steel ntau, piv txwv li, ib lub tuam txhab nrog tag nrho cov khoom muaj nqis ntawm 680 lab yuan, ib xyoos ib zaug ntawm 400,000 tons ntawm kauv steel kav, thiab cov nqi tso tawm ntawm 1.8 billion yuan.
3. Kev ua raws cai: Ntau qhov kev lag luam raug tswj hwm nruj ntawm cov ntaub ntawv thiab cov txheej txheem uas lawv ua haujlwm. Ua raws li FBE txheej txheej txheem pab cov tuam txhab tsis txhob muaj teeb meem kev cai lij choj thiab tuav lawv lub koob npe nrov hauv kev lag luam.
4. Ntev ntev thiab txhim khu kev qha: Daim ntawv thov FBE txheej txheej zoo tuaj yeem txuas ntxiv lub neej kev pabcuam ntawm cov kav dej steel. Qhov kev ntseeg siab no yog qhov tseem ceeb rau kev lag luam uas tso siab rau cov kav dej no los thauj dej, roj thiab roj.
NtsiabFBE txheej txheem txheej txheem
Thaum xav txog FBE txheej, nws yog ib qho tseem ceeb kom nkag siab txog cov txheej txheem tseem ceeb rau lawv daim ntawv thov:
- ASTM D638: Tus qauv no qhia txog cov khoom tensile ntawm cov yas (xws li FBE txheej) kom ntseeg tau tias lawv tuaj yeem tiv taus cov kev ntxhov siab hauv kev siv.
- ASTM D3359: Tus qauv no kuaj qhov adhesion ntawm txheej rau substrate, uas yog ib qho tseem ceeb los xyuas kom meej tias FBE txheej tseem nyob twj ywm nyob rau hauv lub sij hawm.
- AWWA C213: Cov qauv no tshwj xeeb hais txog qhov yuav tsum tau ua rau fusion-bonded epoxy coatings rau cov kav dej steel, muab kev taw qhia rau kev siv, tshuaj xyuas, thiab kev sim.
nyob rau hauv xaus
Hauv cov ntsiab lus, nkag siab FBE txheej txheej txheem yog qhov tseem ceeb rau txhua tus neeg koom nrog hauv kev lag luam yeeb nkab steel. Kev tsom mus rau kev tiv thaiv corrosion, kev ruaj ntseg zoo, thiab kev tswj hwm kev tswj hwm, cov qauv no ua lub luag haujlwm tseem ceeb hauv kev ua kom lub neej ua haujlwm thiab kev ntseeg siab ntawm cov kav hlau thiab fittings. Cov tuam txhab uas muab tus nqi them rau kev ua raws li cov qauv no, xws li cov muaj peev xwm tsim tau thiab cov khoom muaj zog, tuaj yeem tsis tsuas yog txhim kho cov khoom zoo, tab sis kuj ntxiv dag zog rau lawv txoj haujlwm hauv kev sib tw ua lag luam. Raws li qhov kev thov kom ruaj khov thiab txhim khu kev qha steel yeeb nkab txuas ntxiv zuj zus, qhov tseem ceeb ntawm FBE txheej thiab cov qauv rau lawv daim ntawv thov yuav loj tuaj.
Post lub sij hawm: Jun-11-2025