Hauv kev tsim thiab kev tsim kho engineering nruj nruj, kev tiv thaiv sab hauv corrosion rau cov kav dej siab thiab cov khoom siv valve yog qhov tseem ceeb tshaj plaws. Rau cov pa roj carbon steel los yog qis- alloy substrates, kev lag luam feem ntau siv cov khoom sib xyaw corrosion-cov ntaub ntawv tiv taus, feem ntau muab faib ua peb txheej txheem: Txheej, Lined, thiab Clad.
Hauv kev qhia tshwj xeeb thiab kev siv tswv yim, nws yog ib qho tseem ceeb kom paub qhov txawv ntawm peb yam no kom tsis txhob muaj qhov tsis meej. Txoj kev tiv thaiv kev tiv thaiv sab hauv uas tsim nyog tshaj plaws yuav tsum raug xaiv raws li cov txheej txheem tshwj xeeb, nrog rau cov kev cai tshwj xeeb uas tau teev tseg kom ntseeg tau tias kev ua haujlwm tau ua tiav.
1. Txheej
Txheej txheej feem ntau yog hais txog daim ntawv thov txheej tiv thaiv mus rau lub substrate nto ntawm cov txheej txheem xws li electrostatic spraying, tshav kub fusion spraying, fluidized txaj dipping, los yog yob txheej.
Common Materials & Thickness:Feem ntau siv cov coatings muaj xws li epoxy resin, PE, PTFE, thiab cermet, nrog cov iav flake coatings kuj tau siv rau qee kis. Cov txheej txheej yog nyias nyias, feem ntau nyob rau hauv thaj tsam ntawm ntau pua micrometers (μm).
Daim ntawv thov:Feem ntau siv rau kev tiv thaiv corrosion los yog txo cov kev sib txhuam sab hauv (txo qis) thaum lub sij hawm thauj cov dej.
Cov txheej txheem yuav tsum muaj:Txheej feem ntau yog siv rau cov kav dej lossis cov khoom siv tag nrho tom qab prefabrication. Txiav thiab vuam raug txwv nruj me ntsis tom qab tiv thaiv- kho corrosion. Kev sib txuas ntawm flange yuav tsum tau siv los ntawm cov yeeb nkab seem kom ruaj khov ntawm txheej txheej.
Common Standards:Feem ntau ua raws li cov qauv xws li CB/T 3366, SY/T 0442, GB/T 50727, thiab HG/T 20229.
2. Kab
Hauv ob sab phlu yuav tsum tau muab ib tug corrosion-resistant liner nyob rau hauv ib tug substrate (hlau los yog non{1}}hlau) thiab feem ntau yog siv nyob rau hauv cov kev pab cuam heev corrosive.
Common Materials & Thickness:Cov ntaub ntawv uas tsis yog-cov ntaub ntawv hlau muaj xws li PTFE, FEP, PP-R, PE-D, PFA, PVC, thiab roj hmab, nrog rau cov liner tuab ntawm ntau dua lossis sib npaug li 2 hli. Tsis tas li ntawd, mechanically clad bimetallic kav qhov twg muaj corrosion-cov hlau alloy txheej yog haum rau cov pa roj carbon steel nto los ntawm kev nthuav dav lossis kev sib dhos, kuj poob rau hauv qeb ntawm cov kav dej thiab feem ntau siv nyob rau hauv ntev - cov kav dej.
Cov txheej txheem yuav tsum muaj:Cov khoom lined kuj feem ntau prefabricated thiab kho tag nrho. Txiav thiab vuam tsis raug tso cai tom qab tiv thaiv- kev kho corrosion, xav tau kev sib txuas flange. Tshwj xeeb, rau mechanically clad bimetallic kav, txiav, dabtsi yog khoov, thiab nozzle fabrication yog nruj me ntsis txwv tsis pub los mus tiv thaiv liner delamination los yog vau.
Common Standards:Feem ntau ua raws cov qauv xws li GB/T 26500, HG/T 2437, API 5LD, SY/T 6623, thiab DNV-OS-F101.
3. Clad
Cladding siv txoj kev xws li kub dov, overlay welding, hmoov metallurgy, los yog tawg welding rau metallurgically bond a corrosion-resistant alloy txheej rau carbon steel daim hlau los yog kav.
Common Materials & Thickness:Cov thev naus laus zis tsim khoom hauv tsev thiab thoob ntiaj teb rau cov kav dej bimetallic muaj xws li yob sib txuas, kub extrusion, tawg vuam, clad phaj vuam, thiab centrifugal casting. Lub cladding thickness feem ntau ntau dua los yog sib npaug rau 2.5 hli, feem ntau 3 hli.
Core Advantages:Vim lub metallurgical daim ntawv cog lus, clad kav muaj zoo heev machinability. Lawv tso cai rau kev txiav, khoov, thiab ceg nozzle vuam yam tsis muaj kev pheej hmoo ntawm delamination lossis tawg feem ntau cuam tshuam nrog cov txheej txheem kab, ua kom yooj yim rau ntawm - qhov chaw tsim kho thiab kev tsim khoom.
Common Standards:Feem ntau ua raws cov qauv xws li API 5LD, SY/T 6623, thiab DNV-OS-F101.
Hauv cov ntsiab lus, kom paub qhov txawv ntawm cov yam ntxwv ntawm cov txheej txheem thiab cov ciam teb ntawm Txheej Txheej, Lined, thiab Clad, ua ke nrog kev xaiv muaj txiaj ntsig raws li cov kev pabcuam tiag tiag, yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov kav dej thiab cov khoom siv valve.
