1.How kev sim thiab txiav txim rau cov ntsev ua si kuaj?
Kuaj cov qauv
Ua raws li GB / T 10125 "Kev Ntsuam Xyuas Kev Ntsuas Corrosion - PH 6.2), ntsuas kub 35-7.2), ntsuas kub 35-7.2)
Kev sim cov txheej txheem thiab kev tshuaj ntsuam xyuas: ◦ Cov hnoos qeev xeeb tau raug rau 24, 48, lossis 96 teev (nyob ntawm daim ntawv thov cov xwm txheej). Saib xyuas cov khoom lag luam saum npoo av: ◦ Cov tshuaj dawb: ◦ Rain Liab: Hlau Oxide (liab-xim av) tsim los ntawm corrosion ntawm substrate (steel txheej), qhia tias zinc txheej tau nkag mus thiab poob nws cov khoom tiv thaiv. Cov txheej txheem txais kev lees paub (siv cov lej SECC ua ib qho piv txwv): ◦ SCOMATE passivation txheej: tsis muaj xeb dawb yuav tsum tshwm sim tsis pub dhau 48 teev; Hauv 96 teev, thaj chaw dawb muaj xeb yuav tsum tsawg dua lossis sib npaug rau 5%, thiab tsis muaj xeb liab yuav tsum tau nyob. Ntiv tes-tiv thaiv Secc (Secc-n): Vim yog cov ntiv tes-tiv thaiv ntov rau saum npoo, nws muaj kev ua kom zoo dua corrosion. Feem ntau, xeb dawb yog tshem tawm hauv 96 teev, thiab thaj chaw dawb muaj tsawg dua lossis sib npaug ntawm 108 teev. Yog tias cov xeb liab tshwm sim ntxov (piv txwv li, hauv 24 teev uas zinc dhau, plating yog ploj, lossis txheej uas passivation tau ua tsis tiav, ua rau muaj kev tsis zoo rau corrosion.
2.What yog kev sim siab thiab cov qauv kuaj kom ntub dej sov kuaj?
Kev ntsuas kev mob: Kub 40℃± 2 degree, txheeb ze cov av noo 95% ± 3%, rau 72 teev lossis 168 teev (nyob ntawm daim ntawv thov).
Kev Txiav Txim Siab:
Kev ua tau zoo Secc
Hauv zos tsub zuj zuj ntawm cov xim dawb uas qhia tsis meej nyob rau hauv zinc txheej lossis txheej txheej dhau (piv txwv li, pinholes lossis khawb).
Yog hais tias lub zinc txheej tseem yog detached, txom nyem adhesion yuav yog qhov ua rau ntawm kev tiv thaiv txheej.
3. Ua li cas los ua tus ntiv tes tiv thaiv?
Cov ntiv tes sib txuas lus thiab kev kuaj corrosion: tom qab nias qhov chaw nrog cov ntiv tes hws thiab tso tawm hauv ib cheeb tsam 40 teev, thiab cov ntiv tes dawb) ntawm cov quav ntiv tes, thiab cov ntiv tes yuav raug muab tshem tawm nrog dej cawv.
Cov kuab tshuaj tiv thaiv: So cov ntiv tes-resistant zaj duab xis 100 npaug nrog dej cawv lossis isopropyl cawv. Cov yeeb yaj kiab yuav tsum tsis txhob tev tawm, tsis li ntawm cov nyhuv tiv thaiv yuav ploj, ua rau muaj kev txo qis hauv corrosion tsis kam.
4.Qhov ua kom ua cov dej nrog thiab kev sim ntsuas?
Tooj liab sulfate chaw xeem:
Ib qho 10% tooj liab sulfate daws tau txav mus rau saum npoo ntawm Secc thiab lub sijhawm nws yuav siv rau cov txheej zinc los ntawm tooj liab (ploj lawm liab) yog pom.
High-Zoo Secc (zinc txheej ntau dua los yog sib npaug rau 16G / M² + Passivation txheej) yuav tsum tsis txhob tig liab rau ntau tshaj 60 vib nas this.
Yog tias nws hloov xim liab tsis pub dhau 30 feeb, nws qhia tau tias cov txheej zinc dhau dhau lossis txheej uas passivation yog puas, ua rau kev tsis zoo corrosion.
Lead Inetate Immersion Kuaj:
Qhov quav me yog raus hauv 5% ua rau muaj acetate daws thiab pom rau kev tsim cov sulfide xim daus daus (ib qho los ntawm cov khoom siv zinc corosion).
High-zoo Secc yuav tsum qhia tsis muaj nag los nyob rau hauv 2 teev.
Yog hais tias floccules dub sai tshwm sim, lub zinc txheej yog raug rau kev xeb.
5.How ua qhov chaw muaj kev pab rau kev txiav txim?
Secc nrog kev tsis zoo corrosion tsis kam ntau zaus ua kom pom kev tsis zoo saum npoo av, uas tuaj yeem pom tau pom tias yog lub khob tsom iav:
Hla txheej txheej tsis xws luag: Lub chromate passivation txheej yuav tsum yog ib yam daj ntseg daj. Cov zaj sawv ntawm cov xim muaj xim lossis nthuav tawm hauv qab txheej (qhia cov xim qub
Pinholes thiab cov khawb tes thiab cov pinholes: me me pinholes (los ntawm cov npuas tsis raug tshem tawm thaum lub tshuab hluav taws xob uas tau ua rau zinc tuaj yeem dhau los ntawm kev pib ua xeb, ua kom nrawm nrawm nroos xeb.