Yuav Ua Li Cas Ntxuav Sab Hauv Thiab Sab Nraud Yas-coated Steel Pipes
Dec 05, 2023
Yas-coated Steel Pipes Supplier-GNEE
Yuav Ua Li Cas Ntxuav Sab Hauv Thiab Sab Nraud Yas-coated Steel Pipes
Kev ntxuav ntawm sab hauv thiab sab nraud yas-coated steel kav siv cov kuab tshuaj thiab emulsions los ntxuav cov hlau nto kom ua tiav cov txiaj ntsig ntawm kev tshem cov roj, roj, plua plav, lubricants thiab cov khoom siv zoo sib xws, tab sis nws tsis tuaj yeem tshem tawm xeb, oxide nplai, solder, thiab lwm yam. Yog li ntawd, nws tsuas yog siv los ua ib qho kev pabcuam hauv kev tiv thaiv corrosion ntau lawm. Kev tshem tawm xeb: Feem ntau siv cov cuab yeej xws li hlau txhuam los txhuam cov hlau kom tshem tawm xoob lossis tsa oxide nplai, xeb, vuam slag, thiab lwm yam.
Kev tshem tawm xeb ntawm cov cuab yeej tes tuaj yeem ncav cuag qib Sa2, thiab kev tshem tawm xeb ntawm cov cuab yeej hluav taws xob tuaj yeem ncav cuag qib Sa3. Yog hais tias muaj zog oxide nplai txuas rau saum npoo ntawm cov hlau, cov nyhuv tshem tawm xeb ntawm cov cuab yeej yuav tsis zoo tagnrho thiab qhov tob ntawm cov qauv thauj tog rau nkoj xav tau los tiv thaiv corrosion yuav tsis ua tiav. Pickling: Feem ntau, tshuaj thiab electrolytic txoj kev yog siv rau kev kho pickling. Cov yeeb nkab anticorrosion tsuas yog siv tshuaj tua kab kom tshem tawm cov nplai, xeb thiab cov txheej qub. Qee lub sij hawm nws kuj tseem tuaj yeem siv ua 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 qhov ntiav thiab tuaj yeem ua rau muaj kuab paug rau tib neeg lub cev. Txau (pob) tshem tawm xeb: Txau (pov) xeb tshem tawm yog tsav los ntawm lub tshuab hluav taws xob siab kom tig cov tshuaj tsuag (pov) hniav ntawm kev kub ceev, kom cov xuab zeb steel, steel txhaj tshuaj, hlau thiab lwm yam abrasives yog sprayed ( pov ) nyob rau saum npoo ntawm cov yeeb nkab yas-coated. Nws tuaj yeem tshem tawm cov xeb, oxides thiab cov av, thiab cov kav dej sab hauv thiab sab nraud tuaj yeem ua tiav qhov kev xav tau ntawm cov roughness nyob rau hauv qhov kev txiav txim ntawm muaj zog abrasive cuam tshuam thiab kev sib txhuam. .
Yog vim li cas yog tias thaum chromium siv rau hauv cov hlau alloy, hom oxide nto hloov mus zoo li cov oxides tsim ntawm cov hlau ntshiab chromium. Thaum qhov sib ntxiv ntawm chromium nce mus txog 10.5%, atmospheric corrosion kuj ntawm qhov sib npaug-inch tee yog qhov zoo dua. Txawm li cas los xij, thaum cov ntsiab lus chromium siab, qhov kev tiv thaiv corrosion tseem tuaj yeem txhim kho, tab sis tsis loj heev. Tsis tas li ntawd, yog tias qhov chaw puas lawm, cov hlau raug puas lawm yuav kho nws tus kheej los ntawm kev ua haujlwm nrog cov cua, rov tsim cov oxide no, thiab txuas ntxiv muab kev tiv thaiv. Thaum cov yeeb nkab steel-yas coated nrog anti-corrosion txheej, lawv yuav tsum tau kho cathodic.
Tom qab xeb raug tshem tawm ntawm qhov chaw ntawm cov hlau phaj, 95% ntawm thaj chaw saum npoo raug tshem tawm ntawm qhov pom xeb, thiab 5% ntawm thaj chaw tseem zoo ib yam li qub xeb. Siv cov hlau nplaum hlau kom tshem tawm cov xim qub los ntawm cov khoom siv roj. Cov oxide txheej no yog nyias nyias, thiab lub ntuj ci ntawm cov hlau stainless tuaj yeem pom los ntawm nws, muab cov hlau tsis muaj qhov tshwj xeeb. Siv cov hlau txhuam kom tshem tawm cov xeb sab hauv los ntawm cov ces kaum tuag xws li cov welds thiab cov hlau nplaum.
Lub adhesion ntawm txheej thiab substrate yog ib qho tseem ceeb qhia rau kev ntsuam xyuas cov corrosion kuj ntawm lub txheej. Qhov muaj zog adhesion, qhov zoo dua qhov kev tiv thaiv corrosion thiab cov txheej txheem ntau dua. Kev kho saum npoo tiav. Epoxy thee tar primer tuaj yeem siv ob zaug los tiv thaiv cov dej noo thiab xeb. Siv acetone los yog lwm yam tshuaj ntxuav tes kom tshem tawm cov roj, tar thiab lwm yam av ntawm qhov chaw ntawm lub txee. Ntxuav sab hauv thiab sab nraud ntawm cov yas-coated steel kav. Tom qab ntxuav, qhov saum npoo yuav tsum qhuav, tsis muaj roj thiab av.
