Los ntawm nws cov tsos, Ob- qhov sib txuas Plate zoo nkaus li yooj yim, tab sis hauv kev xyaum, nws ua lub luag haujlwm tseem ceeb hauv kev sib dhos, kev thauj mus los, thiab kev txhim kho cov qauv. Nws cov yam ntxwv ua haujlwm tseem ceeb txiav txim siab tag nrho cov qauv kev ruaj ntseg, kev nyab xeeb, thiab kev pabcuam lub neej ntawm qhov project lossis khoom siv. Hauv kev tsim khoom, cov txheej txheem kho saum npoo ntawm Ob- qhov sib txuas phaj tsis yog tsuas yog kev txhim kho kom zoo nkauj xwb; es, nws hloov cov tshuaj muaj pes tsawg leeg, microstructure, thiab lub cev morphology ntawm cov khoom nto, ncaj qha cuam tshuam nws kev ua tau zoo nyob rau hauv ntau yam, xws li corrosion kuj, mechanical zog, sib dhos precision, hnav tsis kam, hluav taws xob thiab thermal conductivity, thiab ib puag ncig adaptability.
Feem ntau cov substrates rau ob- qhov sib txuas daim hlau feem ntau yog carbon steel, qis- alloy steel, stainless hlau, thiab txhuas alloy. Cov txheej txheem kho saum npoo haum rau cov substrates sib txawv sib txawv. Cov txheej txheem muaj xws li electro-galvanizing, kub-dip galvanizing, hmoov txheej, electrophoretic txheej, anodizing, passivation, phosphating, blackening, Dacromet txheej, mechanical galvanizing, thiab fluorocarbon spraying. Lub thickness, adhesion, corrosion resistance, hardness, kub tsis kam, thiab rwb thaiv tsev cov khoom ntawm cov txheej txheej txheej txheej txheej sib txawv, ncaj qha los yog tsis ncaj qha cuam tshuam rau cov phaj txuas lub load-cov kabmob muaj peev xwm, qaug zog tiv thaiv, sib sau ua ke, huab cua tsis kam, thiab cov nqi kho.
Qhov chaw ua haujlwm ntawm ob- qhov sib txuas phaj npog sab hauv tsev qhuav ib puag ncig, sab nraum zoov qhib- huab cua ib puag ncig, ntug dej hiav txwv siab ntsev tsuag ib puag ncig, muaj corrosive ib puag ncig, av noo acid thiab alkali ib puag ncig, thiab kub thiab tsis kub hloov chaw. Ib puag ncig sib txawv muaj cov kev xav tau sib txawv rau kev ua haujlwm tseem ceeb ntawm cov khoom. Raws li ib qho kev sib cais barrier thiab functional interface ntawm lub substrate thiab ib puag ncig sab nraud, txheej txheej kho deg muaj cov haujlwm tseem ceeb hauv qab no: kev tiv thaiv corrosion thiab xeb, txhim kho hnav tsis kam, ua kom zoo dua qub, txhim kho huab cua tsis kam, hloov kho hluav taws xob, thiab kev zoo nkauj.
Kev sib cais ntawm qhov sib txawv: Los ntawm cov txheej tuab lossis hlau plating, nws thaiv kev sib cuag ncaj qha ntawm huab cua, noo noo, acids, alkalis, ntsev, thiab corrosive gases thiab cov substrate, inhibiting electrochemical thiab tshuaj corrosion thiab ncua cov khoom lub neej corrosion kuj.
Kev hloov kho deg: Nws hloov qhov tawv tawv, roughness, thiab coefficient ntawm kev sib txhuam ntawm lub substrate, txhim kho hnav tsis kam, khawb tsis kam, thiab tiv thaiv -galling zog, txo hnav thiab deformation thaum sib dhos thiab siv.
Dimensional them nyiaj: Cov txheej txheem kho deg, nrog rau nws cov thickness, zoo -tunes sab nraud qhov ntev, lub qhov taub, thiab qhov sib nrug qhov tseeb ntawm cov phaj sib txuas, ncaj qha cuam tshuam rau kev sib sau ua ke thiab haum rau kev tshem tawm.
Corrosion resistance yog qhov qhia txog kev ua tau zoo tshaj plaws rau ob- qhov sib txuas daim hlau, tshwj xeeb tshaj yog nyob rau sab nraum zoov thiab corrosive ib puag ncig. Corrosion tsis ua hauj lwm yog hom tsis ua hauj lwm feem ntau ntawm kev sib txuas cov phaj, nrog rau xeb, txheej txheej, substrate perforation, thiab loosening ntawm kev sib txuas. Kev kho deg yog qhov tseem ceeb uas txiav txim siab lub neej ntawm corrosion.
Cov txheej nyias nyias thiab cov zinc txheej electroplated tuaj yeem cais cov huab cua thiab noo noo nyob rau hauv qhov chaw qhuav hauv tsev yam tsis muaj corrosive media, thiab nws txoj kev tiv thaiv -corrosion lub neej tuaj yeem ncav cuag 3-8 xyoo. Txawm li cas los xij, nyob rau sab nraum zoov, ntub dej, ntsev tsuag, kua qaub thiab alkali ib puag ncig, zinc txheej tau yooj yim corroded sai, ua rau cov xeb dawb thiab liab xeb, thiab kev tiv thaiv kev ua haujlwm corrosion yog txo qis heev. Qhov nruab nrab ntsev tsuag tshuaj ntsuam (NSS) feem ntau kav tsuas yog 48-120 teev.
Kub-dip galvanizing yog cov txheej txheem nyiam rau sab nraum zoov ob- qhov sib txuas daim hlau. Cov pa roj carbon steel txuas phaj yog immersed nyob rau hauv molten zinc ntawm 450-460℃los ua ib tug 80-200μm zinc- hlau alloy txheej ntxiv rau ib tug ntshiab zinc txheej. Cov txheej thiab substrate yog metallurgically bonded, ua rau muaj zog adhesion.
Lub zinc txheej yog 10-20 lub sij hawm thicker dua electroplated zinc, muab ob qho tib si lub cev tiv thaiv thiab sacrificial anode tiv thaiv, ua rau muaj kev tiv thaiv corrosion zoo heev. Nyob rau hauv ib puag ncig sab nraum zoov zoo tib yam, nws txoj kev tiv thaiv corrosion tuaj yeem ncav cuag 20-30 xyoo; nyob rau hauv cov huab cua thiab me me acidic / alkaline ib puag ncig, nws tuaj yeem ncav cuag 15-20 xyoo; thiab nws tuaj yeem tiv taus ntau dua 1000 teev ntawm nruab nrab ntsev tsuag tshuaj ntsuam. The dense, non-porous coating exhibits excellent weather resistance, resisting erosion from ultraviolet radiation, rain, and alternating temperature variations. Nws yog ib qho tseem ceeb thev naus laus zis rau ob - qhov sib txuas daim phiaj hauv thaj chaw ntug hiav txwv, sab nraum zoov, thiab cov khoom siv fais fab.
Rau txhuas alloy ob- qhov sib txuas daim hlau, anodizing tuaj yeem tsim cov alumina tuab ntawm 5-30 μm ntawm qhov chaw, thiab kev kho sealing tuaj yeem txhim kho cov khoom thaiv. Cov alumina zaj duab xis muaj tshuaj lom neeg ruaj khov heev, tsis hnov mob nrog huab cua, noo noo, lossis qaug zog acids thiab alkalis. Nyob rau sab nraum zoov, qhov chaw ntub dej, kev tiv thaiv corrosion lub neej ntawm anodized aluminium alloy txuas daim hlau tuaj yeem ncav cuag 15-20 xyoo yam tsis muaj xeb. Txawm li cas los xij, nyob rau hauv qhov chaw muaj zog acid thiab alkali, oxide zaj duab xis yog yooj yim yaj, ua rau corrosion tsis ua hauj lwm. Lub thicker oxide zaj duab xis muab kev tiv thaiv corrosion zoo dua, tab sis cov tuab tuab tuaj yeem cuam tshuam qhov tseeb qhov tseeb. Kev kho sealing yog qhov tseem ceeb rau kev txhim kho corrosion kuj; unsealed oxide films muaj ntau qhov pores thiab yooj yim adsorb corrosive media.
Cov txheej txheem kho saum npoo ntawm ob- qhov sib txuas phaj tsis yog ib kauj ruam ntxiv, tab sis yog lub hauv paus tseem ceeb uas txiav txim siab qhov kev ua tau zoo tag nrho ntawm cov khoom. Nws qhov cuam tshuam ntawm cov khoom txuas mus rau txhua qhov ntev, suav nrog kev tiv thaiv corrosion, mechanics, qhov ntev, sib dhos, ib puag ncig adaptability, thiab tag nrho cov nqi ntawm lub neej, thiab ncaj qha cuam tshuam rau cov khoom muaj kev nyab xeeb, kev ntseeg siab, thiab kev sib tw ua lag luam.