Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab Kev Tshawb Fawb Ntawm Cov Yeeb Nkab Hlau Los Tiv Thaiv -corrosion Txheej

Cov kav hlau hlau tau siv dav hauv cov tub ntxhais kawm xws li kev thauj mus los roj thiab roj, kev siv dej hauv nroog thiab kev tso dej, tshuaj lom neeg engineering, thiab kev tsim hluav taws xob. Kev pabcuam ib puag ncig suav nrog av, huab cua, lub cev dej, thiab cov xov xwm corrosive heev. Electrochemical corrosion yog lub hauv paus ua rau cov yeeb nkab perforation, to, thiab tsis ua hauj lwm.

Los tiv thaiv - cov txheej txheem corrosion, raws li cov txheej txheem tseem ceeb rau kev tiv thaiv cov kav hlau los ntawm kev xeb, ncaj qha txiav txim siab lub neej kev pab cuam, kev nyab xeeb kev ua haujlwm, thiab tag nrho lub neej voj voog nqi ntawm cov kav dej. Cov nram qab no muab kev soj ntsuam kev tshaj lij los ntawm peb qhov loj: engineering qhov tseem ceeb, kev xav tau dav dav rau txheej txheej, hom txheej txheej txheej thiab cov yam ntxwv.

1. cuam tshuam lub corrosion Circuit Court thiab suppress cov tshuaj tiv thaiv corrosion ntawm nws qhov chaw

Qhov corrosion ntawm carbon steel yog tsuas yog electrochemical. Nws yuav tsum tau ua ke ua ke ntawm peb yam: electrolyte, oxygen, thiab anode-cathode circuit. The anti-corrosion coating creates a continuous and dense protective film that isolates the steel substrate from water, oxygen, acids, bases, and salts, directly blocking the reaction path of electrochemical corrosion; zinc, aluminium, thiab lwm yam hlau coatings kuj tseem tuaj yeem cuam tshuam kev xeb ntawm cov substrate los ntawm cathodic tiv thaiv cov nyhuv ntawm kev txi anode, txawm tias cov txheej txheej yog ib feem puas, nws tuaj yeem tiv thaiv corrosion los ntawm kev sib kis.

2. Ua kom ntev kev pab cuam lub neej thiab txo tus nqi tag nrho

Tus nqi corrosion ntawm cov pa roj carbon zoo tib yam cov kav dej tsis muaj kev tiv thaiv- kev kho corrosion tuaj yeem ncav cuag 0.2 - 0.5 hli ib xyoo hauv cov av ntuj, thiab perforation thiab to tuaj yeem tshwm sim hauv 3 - 5 xyoo. Tsim nyog 3PE, fusion-bonded epoxy hmoov, thiab lwm yam. tiv thaiv- cov txheej txheem corrosion tuaj yeem txuas ntxiv lub neej ntawm cov kav dej mus rau 30 - 50 xyoo, txo cov nqi ntawm cov kav dej hloov, kev saib xyuas, thiab kev poob qis, thiab tag nrho cov nqi ntawm lub neej tuaj yeem txo tau ntau dua 40%.

3. Ua kom muaj kev nyab xeeb ntawm kev ua haujlwm thiab tsis txhob muaj kev pheej hmoo ntawm kev tawg

Corrosion perforation tuaj yeem ua rau muaj kev nyab xeeb loj thiab kev noj qab haus huv rau pej xeem cov xwm txheej xws li roj thiab roj tawg, kev xau ntawm cov tshuaj lom neeg, kev cuam tshuam ntawm dej, thiab kev ua qias tuaj ib puag ncig.

Anti- cov coatings muaj peev xwm txo tau qhov tshwm sim ntawm corrosion tsis ua hauj lwm thiab yog lub hauv paus kev ruaj ntseg thaiv rau siab - siab, nplaim hluav taws thiab tawg, thiab tshuaj lom nruab nrab cov kav xa dej. Lawv kuj yog cov cim qhia tseem ceeb rau qhov yuav tsum tau txais hauv pipeline engineering.

4. Txhim kho kev thauj mus los zoo thiab txo kev siv hluav taws xob ua haujlwm

Cov tshuaj tiv thaiv sab hauv -corrosion txheej tuaj yeem txo cov yeeb nkab phab ntsa roughness, txo cov dej tsis kam thiab nyiam scaling, thiab txhim khu kev ua haujlwm ntawm kev thauj mus los nruab nrab. Piv txwv li, cov kav dej xa hluav taws xob nrog epoxy resin hauv ob sab phlu tuaj yeem ua kom cov dej xa mus los ntawm 10% mus rau 15% piv rau cov yeeb nkab liab qab. Lub zog-txuag cov txiaj ntsig ntawm kev ua haujlwm ntev- lub sijhawm siv dej yog qhov zoo kawg.

5. Ua raws li cov cai hauv kev lag luam thiab kev tiv thaiv ib puag ncig

Muaj qhov yuav tsum tau ua los tiv thaiv- cov qauv kev xeb hauv ntau yam xws li roj thiab roj, kev pabcuam hauv nroog, thiab dej haus (xws li GB/T 23257, SY/T 0315, GB/T 17219, thiab lwm yam). Kev ua raws li kev tiv thaiv- txheej txheej corrosion yog qhov tsim nyog rau kev lees txais qhov project; cov tshuaj tiv thaiv -corrosion txheej ntawm cov kav dej haus kuj yuav tsum tau ua kom tau raws li kev tiv thaiv kev nyab xeeb ntawm zaub mov kom tsis txhob muaj cov khoom phom sij los ntawm leaching thiab ua paug rau nruab nrab.

Ua raws li cov kev pabcuam thiab kev tsim kho cov yam ntxwv ntawm cov kav dej steel, cov tshuaj tiv thaiv - cov coatings thiab cov txheej txheem ua tau zoo yuav tsum ua kom tau raws li cov hauv qab no:

1. Core tiv thaiv kev ua haujlwm

• Tsis kam mus rau nruab nrab corrosintawm: Nws yuav tsum tau sib xws nrog cov kev khiav hauj lwm ib puag ncig. Thaum nyob rau hauv ntev - kev sib cuag nrog av, dej tshiab, dej hiav txwv, acids, alkalis, ntsev, thiab roj thiab gas media, yuav tsum tsis txhob muaj tshwm sim tsis ua hauj lwm xws li foaming, tev, los yog xeb.
• Tsis kam rau cathodic stripping:Rau cov kav dej faus, kev tiv thaiv cathodic feem ntau yog siv ua ke. Cov txheej yuav tsum muaj peev xwm tiv taus qhov kev txiav txim ntawm cathodic tam sim no los tiv thaiv cov txheej los ntawm tev thiab bubbling los ntawm substrate. Qhov no yog qhov ntsuas qhov ntsuas tseem ceeb rau kev tiv thaiv corrosion ntawm cov kav dej faus.
• Anti-kev ua haujlwm permeation: Cov txheej yuav tsum muaj qhov porosity tsawg los tiv thaiv kev nkag mus ntawm cov molecules me xws li dej, oxygen, thiab chloride ions, thiab kom tsis txhob muaj qhov nruab nrab corrosion nkag los ntawm cov txheej thiab tiv tauj cov substrate.

2. Lub cev muaj zog mechanical zog

• Adhesion: Qhov no yog lub hauv paus ntawm tag nrho cov khoom. Feem ntau, cov tev adhesion yuav tsum siab dua los yog sib npaug li 5 MPa, thiab fusion- sib khi epoxy hmoov txheej tuaj yeem ncav cuag tshaj 10 MPa; adhesion tsis txaus yuav ua rau cov txheej txheem tev tawm hauv cov nplooj ntawv thiab poob nws txoj haujlwm tiv thaiv tag nrho.
• Impact resistance thiab hnav tsis kam: Haum rau kev cuam tshuam thiab kev sib txhuam thaum lub sij hawm kev thauj mus los hauv pipeline, backfilling, thiab installation. Piv txwv li, qhov cuam tshuam lub zog ntawm 3PE txheej yuav tsum siab dua lossis sib npaug ntawm 10 J kom tsis txhob muaj txheej txheej puas thaum lub sijhawm tsim kho.
• Flexibility thiab dabtsi yog khoov kuj:Haum rau kev khoov ntawm cov kav dej steel. Cov txheej tuaj yeem deform nrog rau cov substrate yam tsis muaj kev tawg los yog tev, thiab feem ntau yuav tsum tsis muaj kab nrib pleb ntawm 1.5℃mus rau 3℃dabtsi yog khoov.

3. Environmental Resistance Performance

• Kub Resistance: Cov pa anti-corrosion txheej yog siv nyob rau hauv qhov kub ntawm -30 txog 80℃. Rau siab -kub nruab nrab cov kav dej, qhov kub thiab txias- cov txheej tiv thaiv (xws li kub-kub FBE, 3PP) yuav tsum tau xaiv.
• Weathering thiab Aging Resistance:Rau cov kav dej siv hluav taws xob, lawv yuav tsum tiv taus huab cua huab cua xws li hluav taws xob ultraviolet, kub hloov pauv, thiab nag los nag. Nws yog qhov yuav tsum tau ua kom qhov kev ntsuam xyuas kev laus ua kom nrawm dua rau ntau dua lossis sib npaug li 1000 teev yam tsis muaj cov hmoov nplej tseem ceeb lossis tsis muaj xim.
• Temperature Variation and Freeze-Thaw Resistance:Nws haum rau qhov sib txawv ntawm lub caij ntuj sov thiab khov -thaw cycles. Cov txheej yuav tsum tsis txhob muaj teeb meem xws li tawg, tev, lossis poob ntawm adhesion.

4. Kev tsim kho kev ua tau zoo

• Tau tshaj nrog industrialized los ua ke kab kev tsim kho (electrostatic spraying, extrusion txheej) los yog ntawm - thaj chaw thiab kho kev tsim kho (txhuam txheej, airless spraying);

• Kev tsim kho kab sib dhos yuav tsum tau kho sai, thaum nyob ntawm - kev tsim kho ntawm qhov chaw yuav tsum tau kho qhov kub thiab txias thiab tsis tshua muaj siab rau qhov kub thiab av noo;

• Muaj lub peev xwm zoo tshaj plaws ntawm ntug thiab lub kaum sab xis, zam cov ntsiab lus tsis muaj zog ntawm cov yeeb nkab kawg, welds, thiab tshwj xeeb - zoo li cov yeeb nkab fittings;

• Lub interlayer adhesion ntawm primer, intermediate coat, thiab topcoat yog zoo, tsis muaj primer tom los yog interlayer tev teeb meem.

5. Kev nyab xeeb thiab kev ua haujlwm ib puag ncig

• Cov txheej txheem ntawm cov kav dej haus yuav tsum ua raws li cov qauv kev sib cuag nrog cov khoom noj khoom haus, thiab tsis muaj tshuaj lom lossis tsis zoo yuav tsum raug tso tawm thaum lub sijhawm ua haujlwm;

• Txwv tsis pub siv siab -VOC thiab carcinogenic- muaj cov coatings (xws li cov coal coal tar pitch coatings), thiab nyiam siv cov kuab tshuaj- dawb, siab -khoom, dej-raws li systems;

• Cov txheej txheej ntawm cov kav dej faus yuav tsum muaj kev tiv thaiv siab kom txo qis kev tiv thaiv cathodic tam sim no thiab txhim kho kev tiv thaiv kev ua haujlwm.

• 

   

Raws li cov khoom siv txheej txheej thiab kev tsim kho, lub ntsiab steel yeeb nkab tiv thaiv -corrosion txheej tuaj yeem muab faib ua rau 6 pawg loj, txhua qhov tsim nyog rau cov kev pabcuam sib txawv thiab cov nqi yuav tsum tau ua:

1. Liquid coating type anti-corrosion coating
Los ntawm txhuam, txau, lossis cov txheej txheem txheej txheej, nws tuaj yeem kho tau ntawm chav tsev kub lossis qhov kub tsis tshua muaj, haum rau ntawm - qhov chaw tsim thiab me me - batch ntau lawm, thiab yog ib txwm siv ntau hom kev tiv thaiv - corrosion.

(1) Epoxy los tiv thaiv -corrosion txheej
Nws yog ua los ntawm epoxy resin thiab muab faib ua hnyav-raws li, tsis yog- hnyav-raws li, thiab dej- raws li epoxy hom.

• Core nta:
• Zoo heev adhesion, zoo heev tshuaj corrosion kuj, dej tsis kam, thiab alkaline kuj; qhov tsis zoo yog cov huab cua tsis zoo, nws yooj yim rau cov hmoov sab nraum zoov, feem ntau yog siv los ua primer lossis faus / waterproof coatings.

• Qeb subdivided:

1. Epoxy zinc-nplua nuj primer: Muaj cov hmoov zinc ntau ntau, muaj ob qho kev tiv thaiv kev tiv thaiv thiab kev tiv thaiv cathodic, nrog rau cov ntsev ntsev muaj zog tiv thaiv, yog cov nyiam primer rau atmospheric thiab faus pipelines;
2. Epoxy coal tar asphalt txheej:Epoxy resin + thee tar asphalt, resistant rau av corrosion thiab zoo heev dej tsis kam, tsis tshua muaj nqi, ib zaug dav siv nyob rau hauv faus dej thiab kua, gas pipelines; vim muaj cov carcinogenic polycyclic aromatic hydrocarbons, nws tau maj mam txwv rau kev siv;
3. Tsis yog -cov kuab tshuaj epoxy txheej: 100% cov ntsiab lus khoom, xoom VOC, tuaj yeem ua tuab -coated nyob rau hauv ib lub sij hawm, tuab txheej tsis muaj pinholes, haum rau kev tiv thaiv -corrosion ntawm sab hauv thiab sab nrauv phab ntsa ntawm cov kav hlau steel, tshwj xeeb tshaj yog tsim rau cov dej haus thiab tshuaj nruab nrab cov kav dej.

(2) Polyurethane Anti- Txheej txheej
Nws muab faib ua ob hom: aliphatic thiab aromatic. Cov yeeb yaj kiab tseem ceeb- cov khoom tsim yog polyurethane resin.

• Cov yam ntxwv tseem ceeb:Zoo yooj, hnav-resistant, dej-resistant, acid thiab alkali corrosion-resistant; Aliphatic polyurethane muaj cov huab cua zoo heev thiab tuaj yeem siv ncaj qha los ua cov tsho sab nrauv rau sab nraum zoov cov kav dej. Qhov adhesion yog me ntsis qis dua rau epoxy, thiab qhov ua tau zoo hauv kev tiv thaiv cov kuab tshuaj muaj zog yog qhov nruab nrab.
• Daim ntawv thov scenarios:Overhead pipeline topcoat, chemical pipelines, pipelines in low -kub ib puag ncig rau kev tiv thaiv- corrosion.

(3) Iav Flake Anti- Corrosion Txheej
Ntxiv nyias iav flakes rau epoxy resin los yog vinyl ester resin.

• Cov yam ntxwv tseem ceeb:Cov iav flakes yog stacked parallelly nyob rau hauv lub txheej los ua ib tug "cov nyhuv maze", uas zoo txhim kho cov anti-permeation kev ua tau zoo piv rau cov epoxy zoo tib yam, thiab muaj zoo heev tiv thaiv rau cov acids, muaj zog alkalis, thiab corrosive media; Qhov tsis zoo yog tias txheej txheej yog nkig, thiab nws qhov kev tiv thaiv rau kev cuam tshuam thiab khoov yog qhov nruab nrab.
• Daim ntawv thov scenarios:Chemical wastewater pipelines, desulfurization pipelines, seawater thauj pipelines, thiab lwm yam., nyob rau hauv ib puag ncig uas muaj zog corrosion.

2. Fusion- sib raug zoo Epoxy hmoov txheej (FBE)

Nws belongs rau cov hmoov txheej txheej txheem thiab yog lub hauv paus txheej txheem thev naus laus zis rau kev tiv thaiv cov kav raj xa dej.

• Kev tsim kho txheej txheem: Tom qab cov yeeb nkab steel raug txhaj tshuaj tiv thaiv xeb, nws yog preheated rau 180-220 degree. Cov hmoov epoxy yog sib npaug los ntawm electrostatic txau, thiab cov cua sov ntawm cov yeeb nkab steel melts thiab theem txheej txheej, ces nws solidifies rau hauv ib zaj duab xis.

• Cov yam ntxwv tseem ceeb:

1. Muaj zog adhesion. Lub zog tev yog feem ntau ntau dua lossis sib npaug li 10 MPa. Nws muaj zoo heev cathodic stripping kuj thiab zoo heev compatibility nrog cathodic tiv thaiv;
2. Cov txheej yog uniform thiab ntom, nrog tus pinhole tsawg heev.Nws muaj kev tiv thaiv zoo rau av, dej, thiab tshuaj lom neeg corrosion;
3. Cov kuab tshuaj-dawb thiab ib puag ncig tus phooj ywg.Kev khiav hauj lwm kub yog qhov dav (hom pa: - 30-100 degree, high-temperature type: mus txog 150℃);
4. Kev tiv thaiv zoo ntawm cov npoo thiab cov ces kaum, thiab txheej thickness ntawm weld seams yog uniform.

• Kev txwv: Tsis muaj kev cuam tshuam tsis zoo thiab hnav tsis kam, tsis tiv taus cov kab hluav taws xob ultraviolet, thiab tsis tuaj yeem siv ncaj qha rau hauv ib puag ncig nyiaj siv ua haujlwm.

• Daim ntawv thovxwm txheej:Roj thiab roj ntev -cov kav dej nyob deb, cov kav dej hauv nroog thiab cov kav dej xa dej, cov kav dej tshuaj, thiab nws tseem yog cov txheej txheem tseem ceeb ntawm 3PE / 3PP txheej.

3. Polyolefin-coated los tiv thaiv- coatings (2PE/3PE, 2PP/3PP)
Cov khoom siv polyolefin yog coated rau saum npoo ntawm cov yeeb nkab steel los ntawm cov txheej txheem extrusion, uas yog lub hauv paus los tiv thaiv -corrosion tov rau faus ntev - cov kav dej nyob deb tam sim no. Ntawm lawv, peb - txheej txheej yog siv dav tshaj plaws.

(1) Peb- txheej polyethylene txheej (3PE)

• Peb- txheej txheej (los ntawm sab hauv mus rau sab nraud):Pem hauv ntej: fused epoxy hmoov (muab adhesion thiab corrosion kuj) + Nruab nrab txheej: copolymer nplaum (ua tiav interlayer bonding) + txheej txheej: siab - ntom polyethylene (HDPE) (muab txhua yam muaj zog, hnav tsis kam, rwb thaiv tsev kev ua haujlwm).

• Core nta:Qhov zoo tshaj plaws faus faus anti{0}}corrosion system, combining siab adhesion ntawm epoxy, cathodic stripping kuj, thiab lub siab mechanical zog, siab rwb thaiv tsev, thiab dej thiab hnav tsis kam ntawm polyethylene; Kev tsim lub neej tuaj yeem ncav cuag 30-50 xyoo, zoo heev tiv thaiv av kev ntxhov siab, cuam tshuam, thiab hnav, qis cathodic stripping tus nqi;
•  
• Kev txwv:Kev nqis peev siab hauv kev tsim kho cov kab ntau lawm, nyuaj nyuaj rau ntawm - kho qhov chaw sib koom ua ke; Ntev -lub sij hawm siv kub tsawg dua los yog sib npaug li 80 degree, tsis tiv taus ultraviolet rays.
• Daim ntawv thov scenarios:Ntev -cov kav xa dej thiab roj av, cov kav dej faus hauv nroog thiab cov kav dej, cov kav dej loj, uas yog cov nyiam los tiv thaiv- daim ntawv corrosion rau cov kav hlau faus hauv Suav teb.

(2) Peb- txheej polypropylene txheej (3PP)

Cov qauv yog tib yam li 3PE, tab sis txheej txheej yog hloov nrog polypropylene.

• Nta: Qhov ntsuas kub ua haujlwm tau zoo dua li 3PE, thiab lub sijhawm ua haujlwm ntev - kub tuaj yeem ncav cuag 110℃. Nws muaj ntau dua rigidity thiab hnav tsis kam; qhov qis- qhov kub thiab txias yog qhov tsis zoo, thiab nws tuaj yeem tawg ntawm -5℃lossis qis dua, yog li nws tsis haum rau thaj chaw txias..
• Daim ntawv thov scenarios: Siab -kub roj av thiab cov kav dej kub thauj mus los.

4. Hlau-raws li tiv thaiv- xeb txheej
Siv cov txheej hlau los tiv thaiv- txheej txheej corrosion, nws muaj ob txoj haujlwm ntawm kev tiv thaiv kev tiv thaiv thiab kev tiv thaiv anode cathodic.

(1) Kub-dip galvanizing txheej

• Txheej txheem: Tom qab cov kua qaub ntxuav ntawm cov yeeb nkab steel thiab tom qab- txheej txheej kho, nws yog immersed nyob rau hauv molten zinc ntawm qhov kub ntawm ib ncig ntawm 450 degree, tsim zinc- hlau alloy txheej thiab ib tug ntshiab zinc txheej nyob rau saum npoo.
• Core feature: Dual tiv thaiv mechanism, cov zinc txheej tuab muab kev tiv thaiv kev tiv thaiv, thiab zinc lub electrode muaj peev xwm qis dua ntawm cov hlau, tso cai rau thaj chaw puas los tiv thaiv los ntawm kev txi anode; cov txheej txheem yog mature, tus nqi yog nruab nrab, thiab kev pab cuam lub neej nyob rau hauv sab nraum atmospheric ib puag ncig yuav ncav cuag 10 mus rau 20 xyoo.
• Kev txwv: Tsis sib npaug txheej thickness, thinner ntawm weld seams; tsis zoo corrosion kuj rau acid, alkali, thiab siab - ntsev av; nyuaj rau immersed loj - txoj kab uas hla steel kav.
• Daim ntawv thov scenarios: Cov kav dej me me - txoj kab nruab nrab hauv nroog cov kav dej, cov kav dej tiv thaiv hluav taws, cov kav dej fais fab, cov kav dej hauv tsev cog khoom, thiab lwm yam. Nws yog feem ntau siv los tiv thaiv - txoj kev xeb rau me me - txoj kab uas hla steel kav hauv kev siv pej xeem thiab hauv nroog.

(2) Thermal Sprayed Zinc / Aluminium Txheej

• Txheej txheem:Zinc los yog txhuas hlau yog melted thiab atomized los ntawm arc txau los yog nplaim hluav taws, thiab tom qab ntawd txau rau saum npoo ntawm cov yeeb nkab steel los tsim cov hlau txheej. Qhov saum npoo yog sau nrog sealing xim kom sau cov pores.
• Core nta:Ntev -ntev cathodic tiv thaiv nyhuv, zoo heev tiv thaiv atmospheric thiab seawater corrosion, nrog rau kev pab cuam lub neej txog li 20 xyoo; tuaj yeem tsim rau ntawm -site, haum rau loj - txoj kab uas hla, tsis xwm yeem - cov kav dej thiab cov haujlwm kho.
• Kev txwv:Cov txheej txheej muaj qhov porosity siab, thiab yuav tsum tau nrog cov xim pleev xim; kev tsim kho efficiency tsawg, thiab tus nqi siab dua kub -dip galvanizing.
• Daim ntawv thov scenarios:Hla- cov kav dej hiav txwv, cov kav dej hiav txwv sab nraum zoov loj, thiab cov kav dej txuag dej.

5. High-kev ua tau zoo tshwj xeeb los tiv thaiv-corrosion txheej

(1) Txau polyurethane elastomer txheej

• Txheej txheem:Ob -cov khoom siv yog sib xyaw los ntawm cov cuab yeej tshwj xeeb thiab tom qab ntawd nrawm nrawm thiab kho, tsim cov yeeb yaj kiab hauv ob peb feeb.
• Cov yam ntxwv tseem ceeb:Lub curing ceev yog ceev heev, tsis muaj sagging thaum lub sij hawm ntsug thiab sab saum toj nto tsim, thiab nws muaj peev xwm yuav thickly thov nyob rau hauv ib txheej; nws muaj qhov yooj yooj yim, zoo heev cuam tshuam, hnav tsis kam, thiab tawg tsis kam; Nws yog resistant rau dej, acid thiab alkali, ntsev pos huab, thiab muaj tsawg rhiab heev rau cov av noo thaum lub sij hawm tsim kho.
• Kev txwv:Cov khoom siv thiab cov khoom siv raug nqi siab, thiab qhov yuav tsum tau ua rau lub hauv paus kev kho mob yog qhov siab heev, thiab kev tswj ntawm adhesion yog qhov nyuaj.
• Daim ntawv thov scenarios:Tiv thaiv -corrosion rau cov kav dej phwj tuaj, cov kav dej tshuaj, tshwj xeeb - cov yeeb nkab fittings, thiab ntawm - qhov chaw kho cov kav dej los tiv thaiv - txheej txheej.

(2) Ceramic hnav-tiv taus thiab tiv thaiv- xeb txheej

Cov txheej txheej yog tsim los ntawm epoxy resin ua cov khoom siv hauv paus, thiab suav nrog ceramic microbeads, silicon carbide thiab lwm yam tawv fillers. Nws muaj cov hardness siab thiab zoo heev hnav tsis kam thiab tiv thaiv -corrosion zog. Nws yog tsuas yog siv rau sab hauv phab ntsa tiv thaiv -corrosion ntawm pipelines thauj cov xov xwm uas muaj cov khoom hais xws li av nkos, ntxhia slurries thiab thee hmoov.

6. Txheej tshwj xeeb rau sab hauv los tiv thaiv -corrosion ntawm steel kav

Txhawm rau ua kom tau raws li qhov yuav tsum tau muaj ntawm nruab nrab corrosion thiab rub txo, ntxiv rau cov kuab tshuaj -dawb epoxy thiab polyurea, muaj ob txoj hauv kev los tiv thaiv sab hauv -corrosion:

• Cement mortar hauv ob sab phlu:Coated rau sab hauv phab ntsa ntawm cov yeeb nkab steel los ntawm cov txheej txheem centrifugal, nws muaj tus nqi qis heev, yog ib puag ncig tus phooj ywg thiab huv si, tiv taus dej corrosion, thiab tuaj yeem tiv thaiv dej zoo. Nws yog lub hauv paus sab hauv los tiv thaiv - txoj kev corrosion loj rau - txoj kab uas hla dej thiab cov kav dej; Txawm li cas los xij, nws qhov tsis zoo yog siab brittleness, tsis zoo cuam tshuam tsis kam, thiab yooj yim tawg.
• Khoom noj khoom haus- qib epoxy resin hauv ob sab phlu:Ua raws li cov qauv kev noj qab haus huv ntawm cov dej haus, nrog rau cov phab ntsa zoo nkauj, tsis muaj kev tiv thaiv, thiab kev ntsuas tsawg dua. Nws ua ke los tiv thaiv -corrosion thiab rub txo, thiab yog siv rau cov dej hauv nroog thiab cov kav dej ncaj qha.

7. Xaiv cov ntsiab cai tseem ceeb
Kev xaiv ntawm cov tshuaj tiv thaiv-corrosion coatings rau cov kav hlau yuav tsum yog raws li kev txiav txim siab ntawm qhov chaw pabcuam (faus / overhead / waterborne / corrosion grade), kev ua haujlwm tsis zoo (kub, siab, nruab nrab), kev tsim kho, thiab tag nrho cov nqi ntawm lub neej.

Feem ntau, nws ua raws li cov qauv tsim qauv ntawm "ua kom muaj kev sib txhuam thiab kev tiv thaiv corrosion ntawm cov txheej hauv qab, thiab ua kom cov neeg kho tshuab lub zog thiab ib puag ncig kam rau ntawm txheej txheej".