Thaum lub sij hawm tiv thaiv corrosion txheej txheem ntawm cov roj thiab cov kav dej, kev kho saum npoo ntawm ERW ncaj seam steel kav yog ib qho tseem ceeb uas txiav txim siab txog kev tiv thaiv kev tiv thaiv lub neej ntawm cov kav dej. Nws yog qhov yuav tsum tau ua ua ntej rau seb cov txheej txheem tiv thaiv corrosion thiab ERW steel yeeb nkab tuaj yeem ua ke ruaj khov. Raws li kev tshawb fawb los ntawm cov kws tshaj lij, lub neej ntawm cov txheej txheem tiv thaiv corrosion tsis tsuas yog nyob ntawm cov yam ntxwv xws li txheej txheej, txheej txheej zoo thiab ib puag ncig kev tsim kho, tab sis kuj nyob ntawm cov yam ntxwv xws li kev kho deg ntawm ERW steel kav, suav txog li 50. % ntawm nws. Qhov cuam tshuam rau lub neej ntawm cov txheej txheem tiv thaiv corrosion. Yog li ntawd, kev kho saum npoo ntawm ERW steel kav yuav tsum nruj me ntsis ua raws li cov txheej txheem tiv thaiv corrosion, thiab cov txheej txheem kho saum npoo ntawm ERW ncaj seam steel kav yuav tsum tau txhim kho tas li.
Qhia ntau yam ERW yeeb nkab xeb tshem tawm txoj kev:
1. Kev ntxuav
Cov kuab tshuaj thiab tshuaj pleev ib ce yog siv los ntxuav cov npoo hlau kom tshem tau cov roj, roj, plua plav, lubricants thiab cov khoom siv organic zoo sib xws. Txawm li cas los xij, nws tsis tuaj yeem tshem tawm xeb, oxide nplai, flux, thiab lwm yam ntawm cov hlau, yog li nws tsuas yog siv los ua ib qho kev pabcuam hauv kev tiv thaiv kev ua haujlwm.
2. Pickling
Pickling kev kho mob feem ntau siv cov tshuaj thiab cov txheej txheem electrolysis. Pipeline los tiv thaiv corrosion tsuas yog siv cov tshuaj pickling, uas tuaj yeem tshem tawm cov nplai, xeb thiab cov txheej qub. Qee lub sij hawm nws tuaj yeem siv los ua kev rov ua dua tom qab xuab zeb blasting thiab xeb tshem tawm. Txawm hais tias kev tu tshuaj lom neeg tuaj yeem ua tiav qee qhov kev huv thiab roughness ntawm qhov chaw, nws cov kab thauj tog rau nkoj yog ntiav thiab tuaj yeem ua rau muaj kuab paug rau ib puag ncig ib puag ncig.
3. Cov cuab yeej tshem tawm xeb
Feem ntau siv cov cuab yeej xws li hlau txhuam los txhuam cov hlau saum npoo kom tshem tawm cov xoob oxide nplai, xeb, vuam slag, thiab lwm yam. Kev tshem tawm xeb ntawm cov cuab yeej tes tuaj yeem ncav cuag qib Sa2, thiab xeb tshem tawm cov cuab yeej hluav taws xob tuaj yeem ncav cuag qib Sa3. Yog tias cov nplai oxide txuas nrog rau cov hlau nto, cov nyhuv xeb tshem tawm ntawm lub cuab yeej yuav tsis zoo tagnrho thiab qhov tob ntawm cov qauv thauj tog rau nkoj xav tau rau kev siv tshuaj tiv thaiv corrosion yuav tsis ua tiav.
4. Txau xeb tshem tawm
Kev tshem tawm xeb siv lub tshuab hluav taws xob muaj zog los tsav cov tshuaj tsuag kom tig ntawm kev kub ceev, kom cov abrasives xws li txhaj tshuaj steel, steel xuab zeb, hlau xaim ntu, thiab cov minerals yog txau rau saum npoo ntawm cov yeeb nkab ncaj seam steel hauv qab. kev ua ntawm lub zog muaj zog. Lub zog centrifugal ntawm lub cev muaj zog. Tsis tsuas yog nws tuaj yeem tshem tawm cov oxides, xeb thiab av, tab sis cov yeeb nkab ncaj seam steel tseem tuaj yeem ua tiav qhov xav tau kev ntxhib los mos nyob rau hauv qhov cuam tshuam loj thiab kev sib txhuam ntawm abrasives.
Tom qab tshuaj tsuag xeb tshem tawm, nws tuaj yeem tsis tsuas yog nthuav tawm lub cev adsorption mus rau lub raj xa dej, tab sis kuj tseem txhim kho cov neeg kho tshuab adhesion ntawm txheej los tiv thaiv corrosion thiab cov kav dej. Yog li ntawd, tshuaj tsuag xeb tshem tawm yog ib qho zoo tshaj plaws xeb tshem tawm txoj kev rau pipeline anti-corrosion. Feem ntau hais lus, txhaj tshuaj blasting feem ntau yog siv rau kev kho cov kav dej sab hauv, thiab kev txhaj tshuaj blasting feem ntau yog siv rau sab nrauv kho ntawm cov kav hlau ncaj seam.
Thaum lub sij hawm tsim cov txheej txheem, kev qhia txog kev tshem tawm xeb yuav tsum nruj me ntsis kom tsis txhob muaj kev puas tsuaj rau ERW ncaj seam steel kav vim kev ua haujlwm yuam kev. Tom qab ERW steel yeeb nkab yog de-embroidered, cov tsos ntawm cov khoom yuav smoother dua ua ntej de-embroidery. Deembroidery ntawm ERW kav dej yog ib qho kev siv thev naus laus zis hauv kev lag luam steel yeeb nkab.
