Lub uniqueness ntawm zinc + asphalt xim txheej yog nyob rau hauv nws siv ntawm "active electrochemical tiv thaiv ntawm lub sacrificial anode" los daws cov teeb meem corrosion tom qab kev puas tsuaj hauv zos, thiab "passive lub cev sib cais ntawm cov xim hloov tau yooj yim asphalt" los daws tag nrho ib puag ncig kev yaig thiab deformation compatibility teeb meem. Nws cov logic tiv thaiv "kev puas tsuaj" thiab "deformation resistance," ua rau nws tshwj xeeb tshaj yog haum rau kev siv scenarios ntawm cov yeeb nkab fittings. Lwm cov txheej txheem tsuas yog tso siab rau ntawm lub cev tsis muaj zog (kev tiv thaiv passive), lossis lawv cov txheej txheem tiv thaiv tau yoog rau cov xwm txheej sib txawv (piv txwv li, zinc + epoxy resin tsom rau cov tshuaj tiv thaiv corrosion), lossis tsis muaj kev tiv thaiv lub cev tiv thaiv rau kev txi anode (xws li, kub ib zaug -dip galvanizing). Tsis muaj ib qho ntawm cov no tuaj yeem ua tau raws li cov yeeb nkab fittings 'kev tiv thaiv cov cai rau "kev puas tsuaj, kev tiv thaiv deformation, thiab kev sib cais ntev ntev."
Cov txheej txheem ib leeg (xws li cov xim asphalt ntshiab lossis epoxy resin) tsuas yog tso siab rau lub cev tiv thaiv kev tiv thaiv. The principle is to isolate corrosive media through a dense film layer, which is a form of "passive protection." Nws qhov tsis zoo yog tias thaum txheej txheej tsim cov pinholes, khawb, lossis cov kab nrib pleb, cov xov xwm corrosive yuav ncaj qha mus rau cov hlau cam khwb cia, thiab tsis muaj kev tiv thaiv tom ntej, corrosion yuav sai heev los ntawm qhov chaw puas. Nyob rau hauv sib piv, nrog zinc + asphalt xim txheej, txawm tias cov asphalt xim txheej puas lawm, cov electrochemical tiv thaiv ntawm zinc txheej tseem tuaj yeem ua haujlwm, sawv cev rau "kev sib xyaw ua ke thiab kev tiv thaiv passive," uas ua rau muaj zog tiv thaiv kev puas tsuaj.
Qhov sib txawv ntawm Zinc + Epoxy Resin Txheej
Thaum zinc + epoxy resin coatings kuj siv "kev txi anode + lub cev thaiv" system, kev tiv thaiv logic ntawm epoxy resin txawv ntawm cov xim asphalt. Epoxy resin coatings muaj qhov zoo nyob rau hauv siab hardness thiab muaj zog tshuaj corrosion kuj (tsim rau acidic thiab alkaline av), tab sis lawv muaj tsis yooj yim thiab yooj yim rau tawg nyob rau hauv cov av kev nyuaj siab los yog connector deformation, ua rau lawv ntau haum rau static, tsis yog -deformable yeeb nkab seem. Asphalt xim coatings, ntawm qhov tod tes, muab qhov zoo ntawm kev ua tau zoo, ua haujlwm rau cov av abrasion thiab kev ntxhov siab deformation, ua rau lawv zoo dua rau cov ntawv thov uas muaj cov khoom sib txuas (yuav tsum tau nquag disassembly thiab sib dhos lossis cuam tshuam los ntawm kev teeb tsa kev ntxhov siab). Lawv qhov kev tiv thaiv tsom mus rau "kev yoog mus rau deformation + ntev- lub sij hawm cais tawm," thaum epoxy resin coatings tseem ceeb "chemical corrosion resistance + high-strength abrasion resistance." Tsis tas li ntawd, cov xim asphalt muaj hydrophobicity zoo dua li epoxy resin, uas ua rau cov dej tsis zoo nyob rau hauv siab -cov av noo ib puag ncig nrog cov dej hauv av ntau, ua kom cov electrochemical depletion ntawm zinc txheej.
Kub-dip galvanizing tsuas yog siv rau kev tiv thaiv kev tiv thaiv hluav taws xob hluav taws xob nkaus xwb, tsis muaj txheej thaiv lub cev los tiv thaiv zinc txheej nws tus kheej. Cov txheej zinc yog txuas ntxiv noj los ntawm cov txheej txheem electrochemical. Nyob rau hauv ib puag ncig uas muaj cov ntsiab lus siab ntawm corrosive media (xws li av saline thiab acidic dej), zinc txheej tau noj sai, ua rau muaj kev tiv thaiv luv luv. Nyob rau hauv sib piv, nyob rau hauv zinc + asphalt xim coatings, lub asphalt xim txheej cais feem ntau ntawm cov corrosive media, txo cov zinc txheej tus nqi noj thiab ua kom ntev -lub sij hawm zoo ntawm electrochemical tiv thaiv. Zuag qhia tag nrho, kev tiv thaiv lifespan tuaj yeem nce 2-3 zaug.
Qhov sib txawv ntawm Polyurethane Txheej
Polyurethane coatings yog siab -kawg cov organic coatings uas cia siab rau siab ceev thiab huab cua tiv thaiv rau lub cev tiv thaiv. Qee cov txheej txheej polyurethane tuaj yeem muaj xeb- inhibiting pigments (xws li zinc hmoov), tab sis cov xim cov ntsiab lus yog qis dua li zinc + asphalt xim coatings. Tsis tas li ntawd, tsis muaj kev tiv thaiv electrochemical txuas ntxiv los ntawm zinc txheej; Kev tiv thaiv xeb tsuas yog pab los ntawm cov xim tiv thaiv cov nyhuv. Qhov tseem ceeb, nws tseem vam khom feem ntau ntawm lub cev tsis muaj zog, ua rau nws tsis kam ua kom tsis muaj zog dua li ob- kev tiv thaiv ntawm zinc + asphalt xim. Nws kuj tseem kim dua thiab tsis tsim nyog rau cov khoom xws li cov yeeb nkab fittings uas muaj kev cuam tshuam rau kev puas tsuaj.
Shanxi Jintai Hongye Casting & Forging Machinery Co., Ltd. yog nyob rau hauv Shanxi Province, Suav. Peb cov haujlwm tseem ceeb hauv kev lag luam suav nrog cov khoom siv hlau yeeb nkab fittings, cov raj xa dej, ntau yam li qub, thiab cov khoom siv manhole npog series. Yog xav paub ntxiv txog cov khoom lag luam lossis sib tham txog kev koom tes, thov hu rau peb txhua lub sijhawm:
