Txog kev kho saum npoo hlau
Ntau cov khoom siv hlau ua siv cov kev kho mob saum npoo los hloov ib (lossis ntau dua) cov yam ntxwv sab nraud ntawm daim ntawv ua haujlwm. Qhov no zoo ntawm tus nqi txuas ntxiv feem ntau yog ua ntawv thov nyob rau theem kev txiav. Ntau yam ntawm cov txheej txheem saum npoo tuaj yeem hloov kho cov hlau, qhov hloov xim tshwj xeeb, qhov ci, kev tiv thaiv corrosion, qhov nyuaj thiab / lossis lwm yam ntawm sab nrauv. Hauv qhov tseem ceeb, kev ua haujlwm saum npoo av suav nrog kev ntsuas tshwj xeeb coj los hloov kev ua haujlwm sab nraud ntawm ib feem kom tau txais txiaj ntsig yam xav tau. Lawv suav nrog tshem tawm cov khoom tawm ntawm daim ntawv ua haujlwm thiab ntxiv khoom rau hauv chaw ua haujlwm. Cov khoom siv hlau siv ntau hauv kev lag luam feem ntau yauv ib lossis ntau qhov kev kho kom zoo dua thaum lub sijhawm ua tiav ntawm ntau lawm. Cov yam ntxwv ntim hauv sab hauv thiab cov yam ntxwv sab nraud ntawm cov khoom siv hlau yog nyob ntawm qhov zoo thiab ua tiav ntawm cov khoom ib tus neeg.Peb yuav ua raws li kev kho deg txawv raws li qhov sib txawv ntawm cov neeg siv khoom. Peb yuav tshuaj xyuas thiab xaiv raws li cov qauv tshuaj ntsuam xyuas ntawm txhua qhov kev lag luam, kom cov neeg tuaj yeem tau txais cov khoom lag luam zoo tshaj plaws
Qhov kev xaiv ntawm cov khoom siv rau lub kais dej tsis yog nyob ntawm cov txheej txheem electroplating xwb, tab sis kuj tseem nyob ntawm qhov zoo ntawm electroplating. Tsis tas li ntawd, nws tseem cuam tshuam nrog cov kais lev cov khoom siv, pov thiab electroplating pretreatment. Lub cev lub taub ntawm cov kais dej yog qhov tseem ceeb ntawm tus kais dej. Hom tshuaj uas nrov tshaj plaws yog zcu40znpb2. Qhov nruab nrab ntawm phab ntsa tuab ntawm qhov casting yog 3 hli. Lub kais dej zoo lub cev, kov, valve npog yuav tag nrho cov tooj dag ua kom zoo nkauj, casting, machining, nto sib tsoo thiab polishing, npib tsib xee plating, zoo nkauj chromium lossis npib tsib xee chromium alloy, yog tias ua tiav ua ntej casting, electroplating, electroplating txheej txheem, piv txwv li, feem ntau ntau xeb tiv taus. Txhawm rau txhawm rau txhim kho qhov kev txhim kho corrosion ntawm cov khoom thiab txhim kho qib qib ntawm cov khoom, cov txheej txheem npib tsib xee plating txheej txheem saws. Txawm li cas los xij, txhawm rau txuag cov nqi tsim tawm, qee qhov kev lag luam ntxiv ntau cov pov tseg tooj liab tooj dag rau hauv kev coj ua, uas ua rau cov tooj dag tooj dag muaj ntau qhov tsis zoo, uas ua rau cov khoom lag luam tshwm sim osteoporosis, ntau dua pob, tiv thaiv corrosion, pitting thiab pitting corrosion tshwm sim hauv kev tshuaj tsuag ntsev tom qab kua qaub. Qee cov tuam ntxhab txawm siv cov khoom siv dua hlau cam hlau thiab zinc alloy li raw cov ntaub ntawv. Vim tias cov hlau tsis yooj yim rau xeb thiab zinc alloy yog xeb-xeb, cov kais dej ua los ntawm cov ntaub ntawv no yooj yim xeb, thiab ntau yam kev xeb, pitting xeb thiab lwm yam tsis zoo tshwm sim ntawm 2H acid ntsev tsuag tshuaj tsuag tshuab. Qee cov tuam ntxhab siv tooj dag percussion valve, thaum cam khwb cia hlau thiab yas ntawm cov ntaub ntawv qis dua yog siv rau qhov kov thiab lub hau valve. Tom qab 24h acid ntsev tsuag tshuaj xyuas, cov khoom lag luam feem ntau tsis tsim valve lub cev corrosion,
2. Lub cev lub ntsiab ntawm casting nozzle yog lub cev lub taub dej, thiab cov xuab zeb pwm thiab cov pwm hlau feem ntau siv rau nws cov ntau lawm. Vim tias qhov saum npoo zoo ntawm lub nozzle yog qhov siab heev, ua ntej electroplating, yuav tsum tsis muaj qhov pom lub qhov hws, kab nrib pleb, tawm hws thiab suav rau saum npoo ntawm qhov ua haujlwm; lub cev kais ntawm cov hlau pwm casting muaj cov qauv kev ua haujlwm zoo, thaj chaw zoo, siab zoo, thiab tseem tuaj yeem zam kev ib puag ncig los ntawm cov xuab zeb casting. Raws li qhov tshwm sim, feem ntau cov tuam txhab siv hlau pwm casting tshuab. Txawm li cas los xij, lub npoo sab nrauv ntawm cov casting nozzle valve ntawm cov hlau pwm yog tsim los ntawm npog cov xuab zeb tub ntxhais los ntawm cov hlau kab noj hniav. Thaum cov kua tooj liab hliv rau hauv cov hlau kab noj hniav, qhov chaw ua kom txias txias yog ceev, thiab cov qauv casting yog pob; thiab cov kab noj hniav los ntawm cov xuab zeb tub ntxhais muaj lub zog qeeb qeeb, uas yog qhov yooj yim los tsim qhov tsis xws ntawm cov tub ntxhais kawm shrinkage. Qee tus neeg tsim khoom, txawm hais tias, siv cov khoom zoo los ua cov tooj dag. Tom qab 24h acid ntsev tsuag tshuaj xyuas, lub fuselage yuav poob lub teeb thiab xeb. Qhov laj thawj yog qhov tshwm sim ntawm cov txheej txheem casting ntawm lub cev faucet. Yog li ntawd, tsuas yog los ntawm kev ua kom muaj zog ntawm cov pwm tsim pwm tsim, alloy casting, casting txheej txheem kev tswj thiab ntxuav tu, tuaj yeem tsim cov kais dej qhov quav yuav raug pov.
3 polishing thiab ntxuav ua ntej electroplating
Kais casting tuaj yeem txheeb tau los ntawm kev siv lub tshuab ua hluav taws xob, sib tsoo thiab polishing. Kev tsim kho thiab polishing yog hloov kho, zom thiab txhuam cov khoom lag luam kom cov nplaim ntawm cov khoom lag luam kom du, txo qhov ntxhib ntawm castings, thiab tshem tawm qhov tsis xws luag xws li cov xuab zeb me me thiab faus thaum casting. Vim lub siab xav tau rau cov tsos zoo ntawm lub nozzle, thiab txheej txheej nyob rau sab nrauv sab nrauv ntawm lub nozzle yuav tsum ua ke zoo, tus qauv yuav tsum zoo, du thiab tsis sib luag, thiab xim yuav tsum zoo ib yam. Qhov chaw polished yuav tsum kaj lug, tsis muaj npuas, sib txuas, vau tawm, khawb thiab lwm yam tsis zoo. Polishing zoo yog qhov tseem ceeb ua kom ntseeg tau qhov zoo ntawm txheej, txhim kho qhov ci ntsa iab saum npoo thiab tshem tawm cov tsis xws luag. Cov kais dej yog cov khoom siv dai khoom. Nws yog rhiab heev rau kev suav nrog thiab slag. Txawm hais tias cov xaim me me tuaj yeem ua rau burrs, pits lossis pinholes thiab qhov tsis xws ntawm lub plating nto, thiab txawm hlawv lub txheej, hlwv thiab tev tawm. Piv txwv li, tom qab 24 teev ntawm kev ntsuas ntsev kua tshuaj tsuag, lub teeb thiab xeb yuav ploj txawm tias bubbling thiab kev xeb tag nrho, yog li nws tseem ceeb heev ua ntej kev kho mob. Tom qab cov xuab zeb nrum tawm ntawm cov kab noj hniav thiab cov roj carbonization, cov pa phem hauv cov polishing muab tshuaj xws li roj, tooj liab, tooj liab hmoov thiab tus neeg sawv cev tom qab machining yuav tsum tau ntxuav kom ntseeg tau tias cov electroplating zoo. Qhov muaj kuab paug nyob rau hauv tseem ceeb yog qhov tseem ceeb ntawm electroplating burr thiab qhov. Piv txwv li, tom qab 24 teev ntawm kev ntsuas ntsev ntsev tshuaj tiv thaiv, txawm tias blistering thiab xeb tag nrho, yuav muaj lub teeb thiab xeb, yog li nws tseem ceeb heev ua ntej kev kho mob. Tom qab cov xuab zeb nchuav tawm ntawm cov kab noj hniav thiab cov roj carbonization, cov roj seem, cov roj tooj liab, tooj liab hmoov, polishing muab tshuaj txhuam thiab lwm cov pa phem hauv polishing muab tshuaj yuav tsum tau ntxuav kom ntseeg tau tias qhov zoo ntawm electroplating. Qhov muaj kuab paug nyob rau hauv tseem ceeb yog qhov tseem ceeb ntawm electroplating burr thiab qhov. Piv txwv li, tom qab 24 teev ntawm kev ntsuas ntsev kua tshuaj tsuag, lub teeb thiab xeb yuav ploj txawm tias bubbling thiab kev xeb tag nrho, yog li nws tseem ceeb heev ua ntej kev kho mob. Tom qab cov xuab zeb nrum tawm ntawm cov kab noj hniav thiab cov roj carbonization, cov pa phem hauv cov polishing muab tshuaj xws li roj, tooj liab, tooj liab hmoov thiab tus neeg sawv cev tom qab machining yuav tsum tau ntxuav kom ntseeg tau tias cov electroplating zoo. Qhov muaj kuab paug nyob rau hauv tseem ceeb yog qhov tseem ceeb ntawm electroplating burr thiab qhov.
Tswj cov txheej txheem electroplating
Cov dej saum npoo yog feem ntau nickel chromium plating. Ntxiv mus, nickel chromium plating txheej txheem muaj ntau xyoo keeb kwm. Cov txheej txheem electroplating yog qhov paub tab heev, nrog lub siab purity ntawm cov ntaub ntawv tshuaj lom neeg thiab tshuaj ntxiv, thiab tsis muaj zog. Ntxiv mus, cov khoom siv electroplating tau ua tiav. Raws li ntev raws li cov txheej txheem kev tswj hwm nruj tau ua tiav hauv cov txheej txheem electroplating, cov tshuaj da dej, yaug dej, cov khoom siv thiab chaw tsim khoom raug khaws cia kom huv, muaj ob peb qhov teeb meem zoo ntawm electroplating. Lub ntsiab corrosion tshwm sim nyob rau hauv kev kuaj xyuas yog tias qee cov tuam ntxhab nkag mus rau hauv lub qhov tso tawm los ntawm lub qhov hws kom txo tus nqi thiab txo lub sijhawm electroplating. Cov txheej yog nyias thiab tsis tuaj yeem ua tiav lub qhov hws ntawm txheej.
Qhov Xaus (1) xaiv cov zoo nrum tooj daj lossis tooj liab alloy rau lub cev kais dej, tuav thiab valve npog, thiab tshem tawm qhov kev txhim kho ntawm cov cam khwb cia hlau thiab corrosion tsis kam ntawm zinc alloy cov khoom; (2) xyuam xim rau txheej txheem casting rau hlau tuag casting thiab lub cev kais dej; (3) zom thiab txhuam kom huv, thiab ua tau zoo ua ntej electroplating; (4) nruj me ntsis ua raws li cov txheej txheem nickel chromium txheej txheem kev paub meej, ntxiv dag zog rau txheej txheem kev tswj hwm kom ntseeg tau txheej Thickness.
Qhov feem ntau ua tiav ntawm cov kais dej yog lwm cov hlau, cov hlau feem ntau yog chromium. Chromium plam cov luster, tab sis nws tsim ua ib txheej nyias nyias ntawm cov hlau uas yuav luag pom thiab tiv thaiv kev cuam tshuam ntxiv.
Tus thawj kais dej ua tiav, siv dav hauv xyoo 19th thiab thaum ntxov xyoo pua 20th, tsis yog chromium, tab sis npib tsib xee. Cov fading ntawm cov npib tsib xee yog qeeb heev ntawm chav tsev kub thiab tsis tshua muaj lub zog thaum nws loj nrog cov zinc thiab tooj liab. Txawm li cas los xij, nws qhov tsis zoo yog tias nws yog ib hom ntawm cov hlau muag muag, uas nthuav tawm sai sai. Thaum chrome tau siv dav hauv xyoo 1930, nws sai tau los ua tus kais dej zoo dua.
Hlau tau rov siv dua los ua topcoat rau kais dej. High polished thiab brushed finishes yog nrov tshaj plaws. Qhov kom zoo dua ntawm cov hlau xaim tas yog tias nws tsis nrawm rau dej stains los yog khawb me me li cov polished tiav. Bronze kuj yog ib qho ntawm lub xyoo' s nyiam tus kais dej tiav. Txawm li cas los xij, qee qhov ua tiav ntawm lub npe hu ua tooj liab yog cov xim tsis yog xim hlau, qhov tseem ceeb xim, tsis yog xim hlau tiag tiag. Bronze tuaj yeem nqa ntawm ntau yam xim, los ntawm lub teeb xim av mus rau ze li xim dub. Cov theem pib bronze feem ntau yog lub teeb xim av. Roj Rubbed Bronze (ntawm chav kawm, tsis muaj roj lossis tsis txhuam), muaj xim ib tsos tsaus tsawv, feem ntau nrog cov xim hlau tsis zoo.
Feem ntau, yog tias cov chaw tsim khoom hu bronze" xim pleev xim," nws yuav tsis yog txheej hlau. Yog tias muaj kev tiv thaiv lub neej, nws yuav yog hlau, tab sis tsis tas yuav ua tau lub tooj tooj. Nws tuaj yeem yog cov khoom siv hlau khov dua uas zoo li tooj dag. Yog li, yog tias koj xaj khoom siv da dej los ntawm lwm tus neeg muag khoom, nco ntsoov tias cov bronze ua tiav tau ntawm cov xim tsim nyog thiab tsis yog qhov ua tau zoo tshaj.
Kev tshuab fais fab yog tus txheej txheem qub. Qhov no suav nrog lub cev ntaws cov kais dej thiab cov hlau los siv rau hluav taws xob rau hauv cov kua dej acid, thiab tom qab ntawv thov tso hluav taws xob rau ob qho khoom siv kom nyiam hlau ions los ntawm cov hlau plated rau tus kais dej. Yog tias tus kais dej tau muab tso rau hauv qhov kev daws rau ntev lossis ntau lub tshuab hluav taws xob, txheej yuav ua rau tuab dua. Rau cov tshuaj pleev ib ce nyias, immersion kav ntev li ob peb feeb. Cov khaub ncaws tuab yuav siv sij hawm ntev, ntev txog li ob peb teev.
Ib qho ntawm cov kev txwv ntawm kev xaim hluav taws xob yog tias nws feem ntau tsis tuaj yeem txiav txim siab tias tus kais puas nyias lossis tuab los ntawm kev tshuaj xyuas ib leeg. Thaum Suav tsim cov kais dej tau muab tso ua ntej ntawm kev ua lag luam, lawv qhov chaw kho electroplated saum npoo yog qhov tsim nyog vim tias lawv nyias thiab nyias. Nws tau ntau xyoo dhau los ntawm qhov teeb meem tshwm sim, tab sis nws qhia tias nws tsis tuaj yeem kuaj pom tus kais dej kom txiav txim siab qhov zoo ntawm txheej.