Dab tsi yog qhov kev pabcuam lub neej ntawm galvanized kav dej hauv cov xwm txheej sib txawv?

Dab tsi yog qhov kev pabcuam lub neej ntawm galvanized kav dej hauv cov xwm txheej sib txawv?
Cov kev pabcuam lub neej ntawm cov kav dej galvanized sib txawv heev, nyob ntawm cov yam xws li cov chaw muaj kev sib zog, kev kho mob, feem ntau yog kwv yees li 5 mus rau 20 xyoo. Cov hauv qab no yog kev txheeb xyuas ntawm cov kev pabcuam lub neej muaj sia thiab cuam tshuam rau cov xwm txheej sib txawv:
1. Qhuav nyob sab hauv ib puag ncig (piv txwv li, cov ntaub ntawv luam tawm, cov khoom siv thav duab)
Kev pabcuam lub neej ntev: 15-20+ xyoo
Cov lus qhia tshwj xeeb: ua kom qhuav ib puag ncig, tsis muaj kev tiv thaiv corrosive (piv txwv li cov khoom pab
Cuam tshuam cov ntsiab lus:
Galvanizing txheej tuab yog qhov tseem ceeb (tus qauv galvanizing txheej ntau dua los yog sib npaug rau 85μm zoo tsis kam tiv thaiv atmospheric oxidation).
Cov roj ntev raug rau cov roj cav, txias, thiab lwm yam tshuaj yuav ua rau cov txheej galvanizing. Kev ntxuav tu (piv txwv li, txhua xyoo so) yog li cas, tsis pub cov kev pabcuam lub neej (piv txwv li, qhib cov kav dej (xws li sab nraud)
Lifespan: 10-15 xyoo
Cov lus qhia tshwj xeeb: Raug rau los nag thiab cov av noo (EG, qhib cov roj hluav taws xob hauv cov chaw tsim hluav taws xob) tuaj yeem ua rau lub ntsej muag muaj hluav taws kub
Cuam tshuam cov ntsiab lus:
Tsis tu ncua daim ntawv thov ntawm anti -} xeb pleev xim (txhua 3-5 xyoos) tuaj yeem txuas ntxiv rau kev ua neej rau 15-20 xyoo.
Thaj chaw ntug dej hiav txwv (nrog cov ntsev, noo) tuaj yeem nrawm dua cov txheej ntawm galvanized txheej, muaj peev xwm ua rau nws lub neej rau 8-12 xyoos.
3. Buried Industrial Cov Pipelines (piv txwv li, Khoom Siv Khoom Siv Khoom Noj thiab Dej Ua Si, Roj Manifolds)
Lifespan: 8-15 xyoo
Cov lus qhia tshwj xeeb: raug rau noo noo, cov kab mob me, thiab cov zaub mov acidic, kua txiv- alkali tuaj yeem maj mam cortrode lub galvanized txheej. Kev sib txhuam los ntawm cov av kuj tseem tuaj yeem ua rau muaj kev puas tsuaj hauv zos mus rau Galvanized txheej (ua cov pits corrosion). Cuam tshuam cov ntsiab lus:
Av corrosivity: nruab nrab xau (pH 6-8) muaj lub neej ntev (12-15 xyoo); Acidic xau (Ph<5) or highly saline soils have a shorter lifespan (8-10 years).
Kev tiv thaiv kev tiv thaiv: anti - corrosion kev kho mob (xws li ntaub qhwv kab xev lossis} Cov ceg ntoo) ua ntej faus neeg tuaj yeem txuas lub neej mus rau 15-20 xyoo.
IV. Tsawg {- kev thauj mus los hnyav (xws li cua compressed thiab cua txias dej pipelines)
LIFPANK: 10-20 xyoo
Cov yam ntxwv ntawm cov yam ntxwv ntawm: Kev Thauj Khoom Siv Hluav Taws Xob yog huv (tsis yog {{0} pa corrosive nyob rau hauv cov pipeline (xws li cov dej tsub zuj zuj hauv qab ntawm cov raj dej).
Cuam tshuam cov ntsiab lus:
Kua velocity: tsawg - kua dej (<1 m/s) are prone to impurity deposition, accelerating localized corrosion and shortening the lifespan to 10-15 years.
Kev tu kom tu ncua: Cov yeeb nkab txhua xyoo tuaj yeem txo cov kev txwv tsis sib xws thiab txuas ntxiv {}, metallurgical thiab tshuaj lom neeg cov kav xa)
Lifespan: 5-10 xyoo
Cov lus qhia tshwj xeeb: Raug cov cua txias rau hauv cov tshuaj ua haujlwm me me (piv txwv li, muaj peev xwm ua kev cob qhia tshuaj), lossis npuaj teg kom yaj zinc txheej.
Cuam tshuam cov ntsiab lus:
Corrosiveness ntawm kev tshaj xov xwm: Tsawg zaus ntawm kev raug (xws li, luv luv hloov chaw), lub neej tuaj yeem ncav cuag 8 - 10 xyoo; Kev kis tau ntev yuav ua rau 5-7 xyoo.
Yeeb Nkab Phab Ntsa Thickness: Yog tias thawj phab ntsa thickness tso cai rau corrosion (piv txwv li, 10% thicker tshaj tus qauv tsim), lub neej tuaj yeem txuas ntxiv mus rau 8-12 xyoos.
6. High {{{{{1} Logration / EG, Cov Khoom Siv Txhawb, Cov Khoom Sib Kis)
Lifespan: 8-15 xyoo
Cov lus qhia tshwj xeeb: Raug rau cov kev hloov pauv txhua yam (pivyam, cov txheej txheem ua ke sib kis (corrosion tshwm sim ntawm kev ntxhov siab ntau). Cuam tshuam cov ntsiab lus:
Kev siv thauj khoom: nyob rau hauv qis loads (<50% of the design load), the service life is 12-15 years. Under high loads or frequent vibration, the service life may be shortened to 8-10 years.
Vuam zoo: Kev puas tsuaj rau cov txheej galvanized ntawm welds, yog tias tsis tau rov qab los tiv thaiv corrosion, txo lub neej pabcuam los ntawm 30% -50%.
Qhov tseem ceeb ntsuas rau ncua lub neej ntawm galvanized kav dej:
Kev tu ib txwm: soj ntsuam qhov tseeb ntawm Galvanized txheej ib xyoos ib zaug thiab rov thov dua {}} xeb pleev xim rau thaj chaw puas.
Ib puag ncig kev cais tawm: Siv cov tsho yas, siv cov tes yas lossis anti {{{{corrosion coachings kom cais cov yeeb nkab ntawm cov yeeb nkab sab nraud.
Pom zoo siv cov yeeb nkab xaiv: rau qhov siab - corrosion cov yeeb nkab (nrog galvanized yas
Zam kev tshaj tawm: Cov qauv hluav taws xob galvanized log tswj kom tsis txhob muaj kev ntxhov siab - ua rau muaj kev puas tsuaj rau galvanized txheej.