1. Taw qhia
Kev sib txuas lus cable nyob rau hauv kev sib kis ntawm high-frequency signals, conductors yuav tsim cov nyhuv ntawm daim tawv nqaij, thiab nrog rau kev nce nyob rau hauv lub zaus ntawm cov teeb liab kis tau tus mob, cov nyhuv ntawm daim tawv nqaij yog ntau thiab hnyav. Cov nyhuv ntawm daim tawv nqaij yog hais txog kev sib kis ntawm cov teeb liab raws li sab nrauv ntawm tus neeg xyuas pib sab hauv thiab sab hauv ntawm tus neeg xyuas pib ntawm lub coaxial cable thaum zaus ntawm cov teeb liab kis mus txog ntau kilohertz los yog kaum txhiab hertz.
Tshwj xeeb, nrog rau cov nqi thoob ntiaj teb ntawm tooj liab nce siab thiab cov khoom siv tooj liab hauv cov xwm txheej tau dhau los ua qhov tsis tshua muaj, yog li kev siv tooj liab-clad steel lossis tooj liab-clad aluminium hlau los hloov tooj liab conductors, tau dhau los ua ib txoj haujlwm tseem ceeb rau cov hlau thiab cable manufacturing kev lag luam, tab sis kuj rau nws txoj kev nce qib nrog kev siv ntawm qhov chaw lag luam loj.
Tab sis cov hlau hauv tooj liab plating, vim yog kev kho mob ua ntej, ua ntej plating npib tsib xee thiab lwm yam txheej txheem, nrog rau kev cuam tshuam ntawm cov txheej txheem plating, yooj yim los tsim cov teeb meem hauv qab no thiab qhov tsis xws luag: hlau blackening, pre-plating tsis zoo. , lub ntsiab plating txheej tawm ntawm daim tawv nqaij, ua rau cov khoom siv pov tseg hlau, cov khoom siv pov tseg, kom cov khoom tsim cov nqi nce. Yog li ntawd, nws yog ib qho tseem ceeb heev los xyuas kom meej qhov zoo ntawm txheej. Daim ntawv no tsuas yog tham txog cov txheej txheem txheej txheem thiab cov txheej txheem rau kev tsim cov tooj liab-clad steel hlau los ntawm electroplating, nrog rau cov laj thawj ntawm cov teeb meem zoo thiab cov kev daws teeb meem. 1 Copper-clad steel hlau plating txheej txheem thiab nws ua
1. 1 Kev kho ua ntej ntawm cov hlau
Ua ntej, cov hlau yog immersed nyob rau hauv alkaline thiab pickling tov, thiab ib tug tej yam voltage yog siv rau cov hlau (anode) thiab lub phaj (cathode), lub anode precipitates ib tug loj npaum li cas ntawm oxygen. Lub luag haujlwm tseem ceeb ntawm cov pa roj carbon monoxide no yog: ib qho, ua npuas ua npuas rau saum npoo ntawm cov hlau hlau thiab nws cov electrolyte nyob ze plays lub tshuab agitation thiab stripping nyhuv, yog li txhawb cov roj los ntawm qhov chaw ntawm cov hlau hlau, ceev cov saponification thiab emulsification txheej txheem. roj thiab roj; Thib ob, vim tias cov npuas me me txuas nrog qhov sib txuas ntawm cov hlau thiab cov tshuaj, nrog cov npuas thiab cov hlau xaim tawm, cov npuas yuav adhering rau cov hlau hlau nrog cov roj ntau rau saum npoo ntawm cov tshuaj, yog li ntawd, ntawm Cov npuas yuav coj cov roj ntau adhering rau cov hlau hlau rau saum npoo ntawm cov tshuaj, yog li txhawb kev tshem tawm cov roj, thiab tib lub sij hawm, nws tsis yooj yim los tsim hydrogen embrittlement ntawm lub anode, kom ib tug zoo. plating tuaj yeem tau.
1. 2 Plating ntawm cov hlau
Ua ntej, cov hlau yog pre-kho thiab pre-plated nrog npib tsib xee los ntawm immersing nws nyob rau hauv lub plating tov thiab siv ib tug tej yam voltage rau cov hlau (cathode) thiab tooj liab phaj (anode). Ntawm lub anode, lub phaj tooj liab poob electrons thiab ua dawb divalent tooj liab ions nyob rau hauv lub electrolytic (plating) da dej:
Cu – 2e → Cu2+
Ntawm lub cathode, cov hlau hlau yog electrolytically re-electronised thiab divalent tooj liab ions tau tso rau ntawm cov hlau los ua ib tug tooj liab-clad steel hlau:
Cu2 + + 2e → Cu
Cu2 + + e → Cu +
Cu + + e → Cu
2H + 2e → H2
Thaum cov kua qaub nyob rau hauv cov tshuaj plating tsis txaus, cuprous sulphate yog yooj yim hydrolysed los ua cuprous oxide. Lub khob oxide yog daig hauv txheej plating, ua rau nws xoob. Cu2 SO4 + H2O [Cu2O + H2 SO4
I. Cov Ntsiab Lus Tseem Ceeb
Sab nraum zoov kho qhov muag cables feem ntau muaj liab qab fibers, xoob raj, dej thaiv cov ntaub ntawv, ntxiv dag zog rau cov ntsiab lus, thiab txheej sheath. Lawv tuaj nyob rau hauv ntau yam xws li central tube tsim, txheej stranding, thiab skeleton qauv.
Bare fibers xa mus rau thawj fibers optical nrog ib txoj kab uas hla ntawm 250 micrometers. Lawv feem ntau suav nrog cov txheej txheem tseem ceeb, txheej txheej cladding, thiab txheej txheej txheej. Ntau hom liab qab fibers muaj ntau txheej txheej txheej. Piv txwv li, ib hom OS2 fibers feem ntau yog 9 micrometers, thaum multimode OM2 / OM3 / OM4 / OM5 fibers yog 50 micrometers, thiab multimode OM1 fibers yog 62.5 micrometers. Cov fibers liab qab feem ntau yog xim-coded rau kev sib txawv ntawm ntau cov tub ntxhais fibers.
Cov raj xoob feem ntau yog ua los ntawm cov khoom siv hluav taws xob muaj zog PBT thiab siv los ua kom haum rau cov fibers liab qab. Lawv muab kev tiv thaiv thiab muaj cov dej thaiv cov gel los tiv thaiv cov dej nkag uas tuaj yeem ua rau cov fibers puas. Cov gel kuj ua raws li qhov tsis tuaj yeem tiv thaiv fiber ntau los ntawm kev cuam tshuam. Cov txheej txheem tsim cov raj xoob yog qhov tseem ceeb los xyuas kom meej cov fiber ntau ntev.
Cov ntaub ntawv thaiv dej muaj xws li cable dej thaiv cov roj, dej thaiv cov xov paj, lossis cov hmoov dej thaiv. Txhawm rau txhim kho lub cable tag nrho cov dej thaiv kev muaj peev xwm, txoj hauv kev tseem ceeb yog siv cov roj thaiv dej.
Txhim kho cov ntsiab lus tuaj hauv cov hlau thiab tsis yog xim hlau. Cov hlau yog feem ntau ua los ntawm phosphated steel hlau, aluminium tapes, los yog steel tapes. Cov khoom tsis yog xim hlau feem ntau yog ua los ntawm FRP cov ntaub ntawv. Txawm hais tias siv cov khoom siv, cov ntsiab lus no yuav tsum tau muab cov khoom tsim nyog rau lub zog kom tau raws li cov qauv kev cai, suav nrog kev ua haujlwm nruj, khoov, cuam tshuam, thiab sib tw.
Cov ntaub qhwv sab nrauv yuav tsum xav txog kev siv ib puag ncig, suav nrog kev tiv thaiv dej, UV tiv thaiv, thiab huab cua tsis kam. Yog li ntawd, cov khoom siv PE dub feem ntau yog siv, vim nws cov khoom zoo heev ntawm lub cev thiab tshuaj lom neeg ua kom haum rau kev teeb tsa sab nraum zoov.
2 Qhov ua rau muaj teeb meem zoo hauv cov txheej txheem tooj liab plating thiab lawv cov kev daws teeb meem
2. 1 Kev cuam tshuam ntawm kev kho ua ntej ntawm cov hlau ntawm txheej plating Kev kho ua ntej ntawm cov hlau yog qhov tseem ceeb heev hauv kev tsim cov tooj liab-clad steel hlau los ntawm electroplating. Yog hais tias cov roj thiab oxide zaj duab xis nyob rau saum npoo ntawm cov hlau tsis raug tshem tawm tag nrho, ces cov txheej txheem ua ntej-plated npib tsib xee tsis plated zoo thiab kev sib raug zoo tsis zoo, uas thaum kawg yuav ua rau lub ntsiab tooj liab plating txheej poob. Yog li ntawd, nws yog ib qho tseem ceeb kom ua tib zoo saib xyuas cov concentration ntawm alkaline thiab pickling kua, pickling thiab alkaline tam sim no thiab seb lub twj tso kua mis zoo li qub, thiab yog tias tsis yog, lawv yuav tsum tau kho tam sim ntawd. Cov teeb meem zoo sib xws hauv kev kho ua ntej ntawm steel hlau thiab lawv cov kev daws teeb meem tau qhia hauv Table
2. 2 Kev ruaj ntseg ntawm cov tshuaj pre-nickel ncaj qha txiav txim siab qhov zoo ntawm cov txheej txheem ua ntej plating thiab ua lub luag haujlwm tseem ceeb hauv cov kauj ruam tom ntej ntawm tooj liab plating. Yog li ntawd, nws yog ib qho tseem ceeb kom tsis tu ncua soj ntsuam thiab kho qhov muaj pes tsawg leeg ntawm cov tshuaj pre-plated npib tsib xee thiab xyuas kom meej tias cov tshuaj pre-plated npib tsib xee yog huv si thiab tsis muaj kab mob.
2.3 Lub zog ntawm cov txheej txheem plating tseem ceeb ntawm cov txheej plating Cov txheej txheem plating muaj cov tooj liab sulphate thiab sulfuric acid ua ob yam, qhov sib xyaw ntawm qhov sib piv ncaj qha txiav txim siab qhov zoo ntawm cov txheej txheej plating. Yog hais tias qhov concentration ntawm tooj liab sulphate siab dhau lawm, tooj liab sulphate crystals yuav precipitated; Yog hais tias qhov concentration ntawm tooj liab sulphate tsawg dhau, cov hlau yuav yooj yim scorched thiab plating efficiency yuav cuam tshuam. Sulfuric acid tuaj yeem txhim kho cov hluav taws xob conductivity thiab kev ua haujlwm tam sim no ntawm cov tshuaj electroplating, txo cov concentration ntawm tooj liab ions hauv cov tshuaj electroplating (cov nyhuv tib yam ion), yog li txhim kho cov cathodic polarization thiab dispersion ntawm cov tshuaj electroplating, kom qhov ceev tam sim no. txwv nce, thiab tiv thaiv cov hydrolysis ntawm cuprous sulphate nyob rau hauv cov tshuaj electroplating rau hauv cuprous oxide thiab nag lossis daus, ua rau kom muaj kev ruaj ntseg ntawm cov tshuaj plating, tab sis kuj txo cov anodic polarisation, uas yog conducive mus rau lub qub dissolution ntawm lub anode. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias cov ntsiab lus sulfuric acid yuav txo qhov solubility ntawm tooj liab sulphate. Thaum cov ntsiab lus sulfuric acid nyob rau hauv cov tshuaj plating tsis txaus, tooj liab sulphate yog yooj yim hydrolysed rau hauv cuprous oxide thiab entrapped nyob rau hauv lub plating txheej, cov xim ntawm txheej yuav tsaus thiab xoob; Thaum muaj ntau tshaj ntawm sulfuric acid nyob rau hauv lub plating tov thiab tooj liab ntsev cov ntsiab lus yog tsis txaus, cov hydrogen yuav tsum tau ib feem ntawm lub cathode, thiaj li hais tias lub nto ntawm lub plating txheej tshwm sim spotty. Phosphorus tooj liab phaj cov ntsiab lus phosphorus tseem muaj feem cuam tshuam rau qhov zoo ntawm txheej, cov ntsiab lus phosphorus yuav tsum tau tswj nyob rau hauv thaj tsam ntawm 0. 04% mus rau 0. 07%, yog tias tsawg dua 0. 02%, nws yog ib qho nyuaj rau tsim. ib zaj duab xis los tiv thaiv kev tsim cov tooj liab ions, yog li ua rau cov hmoov tooj liab hauv cov tshuaj plating; yog tias cov ntsiab lus phosphorus ntau dua 0. 1%, nws yuav cuam tshuam rau kev tawg ntawm tooj liab anode, kom cov ntsiab lus ntawm bivalent tooj liab ions hauv cov tshuaj plating txo, thiab tsim cov av nkos anode ntau. Tsis tas li ntawd, cov phaj tooj liab yuav tsum tau muab yaug kom tsis tu ncua txhawm rau tiv thaiv cov anode sludge los ntawm polluting cov tshuaj plating thiab ua rau roughness thiab burrs nyob rau hauv lub plating txheej.
3 Kev xaus
Los ntawm kev ua tiav ntawm cov lus hais saum toj no, qhov adhesion thiab txuas ntxiv ntawm cov khoom yog qhov zoo, qhov zoo yog ruaj khov thiab kev ua haujlwm zoo heev. Txawm li cas los xij, hauv cov txheej txheem tsim khoom tiag tiag, muaj ntau yam cuam tshuam rau qhov zoo ntawm cov txheej txheem plating, thaum pom qhov teeb meem, nws yuav tsum tau soj ntsuam thiab kawm nyob rau lub sijhawm thiab kev ntsuas tsim nyog yuav tsum tau coj los daws nws.
Post lub sij hawm: Jun-14-2022