1.How los ua kom zoo tshaj plaws zinc txheej?
Nce lub thickness ntawm zinc txheej
Siv cov kub-dip galvanized txheej ntawm ntau dua los yog sib npaug rau 85μm
Txhim Kho Txheej Txheej
Zinc-aluminium alloy txheej (zam): kev tiv thaiv corrosion yog 3-5 zaug uas ntshiab zinc, zoo heev rau cov av corrosive.
Galfan (ZN-5% AL-RE): Zoo dua cov av corrosion tsis kam dua li cov ntshiab zinc, zoo hloov.
2.Yog li cas txhawm rau txhim kho cov tshuab txiav txheej thoob?
High-Sest Primer + Tn Duab Zaj Duab Xis Intermediat Xim + hnav-resistant Topcoat
Primer: Epoxy Zinc-nplua nuj Primer: muab kev tiv thaiv Cathodic thiab tau tshaj nrog Galvanized txheej (qis dua cov mis lossis cov mis tshwj xeeb).
Kuab-dawb epoxy Primer: siab adhesion, shielding dej vapor (saum npoo sandblasting yuav tsum tau).
Nruab nrab pleev xim: Epoxy Micracous hlau Inflmedia xim (100-150μm): Flaky Micaceous Hlau oxide txhim kho thiab tiv thaiv nkag mus.
Topcoat: Polyurethane / Hloov Cov Epoxy Thuam thiab cov kab mob-resistant thiab cov kab mob-resistant), iav flake epoxy (super hnav-resistant).
Fusion Bonded Epoxy Hmoov (FBE) Txheej
Ib qho txheej txheem: qauv rau cov roj pleev kev tiv thaiv corrosion, thickness 300μm, muaj kuab txhuas muaj zog thiab tshuaj lom neeg tiv taus.
Ob-Txheej Fbe: Lub hauv qab txheej yog anti-corrosion epoxy, thiab hnav cov txheej txheem sab nraud thiab hnav tau cov kev cuam tshuam tsis zoo. Polyethylene / Polypropylene Daim Kab Xev (3LPE / 3LPP)
Tus qauv: Epoxy Primer + polymer adhesive + polyethylene / polypropylene sab nraud sheath.
Cov txiaj ntsig: Kev tiv thaiv muaj zog heev, haum rau cov chaw pob zeb lossis cov khoom qab qab muaj gravel scenes.
3.Nws kev tiv thaiv cathodic tsim nyog rau kev siv sijhawm ntev hauv av?
Necessity and relationship with galvanizing: The galvanizing layer can provide initial sacrificial protection, but in long-term underground use (>20 xyoo) lossis hauv kev tiv thaiv corrosive loj, ntxiv kev tiv thaiv kev tiv thaiv kev tiv thaiv ntxiv.
Kev fij Txoj Kev Mob Anode
Cov khoom siv: Magnesium alloy (mg), zinc alloy (zn) anode.
Muaj feem xyuam: cov qauv qauv me me hauv kev tiv taus qis av thiab tsis muaj chaw cog lus tam sim no.
Layout: Anode 1.5-36 deb ntawm cov qauv, tau sau nrog cov tshuaj tshwj xeeb cov khoom siv kom txo qis.
Kev qhuas tam sim no
Cov Khoom Siv: Siab Silicon Cam Khwb Cia Hlau / MMO Anode, muaj peev xwm ntsuas tau, siv electrode.
Muaj feem xyuam: cov kav dej loj, cov yeeb nkab hauv av, siab resistivity av lossis scenes nrog cog tuab tam sim no.
Tiv thaiv muaj peev xwm: tswj galvanized steel qauv ntawm -0.95--1.10V.
4.Yog dab tsi yog qhov ntsuas txhim kho rau cov xwm txheej tshwj xeeb?
Kev cuam tshuam tam sim no: INSTEEMGETS lossis polarity tso dej
- Cathodic kev tiv thaiv siv zinc strips lossis mixed hlau oxide (MMO) anodes
Cov microbial corrosion: ntxiv cov fungicides (xws li epoxy thee tar) rau txheej
- Cathodic kev tiv thaiv muaj peev xwm tsawg dua lossis sib npaug rau -0.95v inhibits srb kev ua si
Kev pheej hmoo siab ntawm kev puas tsuaj kev puas tsuaj: ntxiv Polyethylene tiv thaiv lub tes tsho lossis qhob txheej rau txheej sab nraud (seabed / dej hla)
- Siv 300 3lpp txheej.
Vuam thiab cov ntsiab lus puas: Vuam thaj chaw Sandblasted rau SA2.5 qib, coated nrog kuab-dawb lub zog
- Cov cheeb tsam uas puas tau kho nrog cov xim txias galvanized xim + txheej
5.Qhov cov ntsiab lus tseem ceeb ntawm kev tsim kho thiab kev lees txais yog li cas?
Cov txheej txheem saum npoo: qhov saum npoo ntawm galvanized txheej yuav tsum tau maj mam tu sandblasted (sa2 qib) los yog rub cov nplaum kom ntau dua lossis muaj sib npaug nrog 5mpa).
Txheej siv: nruj tswj cov av noo huab cua (<85%) and dew point (≥3°C). The interval between multiple layers of coating shall be implemented according to technical specifications.
Cathodic kev tiv thaiv tsim: Tsim muaj nuj nqis thiab txoj hauj lwm raws li ISO 15589-1 lossis nace sp0169, thiab tag nrho cov kev tiv thaiv muaj peev xwm tiv thaiv.
Kev kuaj xyuas thiab kev txais
Cov Txheej Txheem: Kev Tshawb Nrhiav Spark Reak Reak, Adhesion Kuaj.
Cathohode Kev Tiv Thaiv: Ntsuas cov kev tiv thaiv muaj peev xwm 48 teev tom qab lub zog rau.