Koj pom cov lus nug no tshwm sim ntau hauv specs thiab RFQs. Txhua tus neeg xav tau tus pin uas tawv thiab zoo li zoo, feem ntau qhia cov xim zinc plating zoo li nws yog ib qho, tsis muaj qhov tsis zoo. Qhov tseeb yog ntau nuanced. Qhov ci xiav, daj, lossis xim dub tsis yog xim xwb; nws yog ib txheej chromate hloov dua siab tshiab tshaj zinc, thiab nws cov durability hinges ntawm lub kaum os yam uas tib neeg nquag saib. Nws tsis yog hais txog ntsev tsuag cov xuab moos ntawm cov ntaub ntawv.

Lub ntsiab lus yuam kev: Xim sib npaug kev ua haujlwm

Feem ntau cov neeg yuav khoom, txawm tias qee tus engineers, pom cov xim ua tiav. Lawv yuav nug txog xiav zinc tus pin xav tias xim nws tus kheej muab kev tiv thaiv corrosion. Nov yog thawj ntxiab. Cov xim yog ib qho byproduct ntawm cov txheej txheem chromate-xiav yog feem ntau iridescent chromate, dub tej zaum yuav dub chromate, thiab hais txog. Cov ntaub thaiv npog tiag tiag yog lub hauv paus zinc txheej tuab, ntsuas hauv microns, thiab qhov zoo ntawm chromate foob. Kuv tau pom cov pins nrog lub ntsej muag zoo nkauj, sib sib zog nqus xiav xim ua tsis tiav vim tias cov zinc tso nyiaj yog nyias thiab ntxeem tau, lossis cov chromate yaug tau paug. Cov xim yog zoo meej mus txog rau thaum liab xeb tawg nyob rau hauv qab.

Tom qab ntawd muaj lub substrate. Ib tus pin ncej lub durability pib ntev ua ntej plating. Yog tias koj tab tom tsim cov pins los ntawm qib qis, xaim tsis zoo nrog qhov tsis zoo ntawm qhov chaw, plating yuav nthuav tawm cov qhov tsis zoo, tsis zais lawv. Peb kawm qhov no nyuaj heev xyoo dhau los ntawm ib pawg ntawm clevis pins rau cov rooj tog sab nraum zoov. Cov specs hu ua dub zinc tiav. Lawv saib zoo heev ntawm lub thawv, tab sis nyob rau hauv rau lub hlis nyob rau hauv ib tug ntug dej hiav txwv cheeb tsam, lawv tau peppered nrog dawb xeb thiab corrosion pits. Post-mortem qhia qhov teeb meem tsis yog lub plating da dej ib se, tab sis cov khoom siv tsis zoo los ntawm tus xaim pas nrig. Lub plating cia li ua raws li cov contours ntawm subpar hlau.

Cov txheej txheem tswj yog txhua yam. Lub pre-plating tu theem - degreasing, acid pickling - yog arguably tseem ceeb tshaj lub plating tank nws tus kheej. Txhua cov roj seem lossis oxide nplai tiv thaiv zinc adhesion. Kuv nco qab mus xyuas cov nroj tsuag fastener, zoo li Handan Zitai Fastener Manufacturing Co., Ltd. nyob rau hauv Yongnian, Hebei - thaj tsam ntawd yog ib lub chaw tsim khoom loj. Koj tuaj yeem pom qhov txawv ntawm kab. Qhov zoo dua muaj kev tu ntau theem thiab ua kom huv si. Cov kab pheej yig dua yuav luv luv lub voj voog yaug. Qhov tshwm sim? Pins uas dhau qhov ceev 24-teev tshuaj tsuag ntsev tab sis yuav qhia cov ntsiab lus tsis ua hauj lwm tom qab ob peb lub voj voog los yog kev puas tsuaj me me.

Qhov twg Durability tiag tau kuaj

Hauv lub ntiaj teb tiag tiag, tus pin ncej tsis zaum hauv chav kuaj nruab nrab. Nws tau txais kev tuav, ntxig, tej zaum muaj kev sib txhuam, raug tshuaj lom neeg, lossis UV teeb. Abrasion kuj yog ib qho loj heev. Cov txheej chromate yog nyias, feem ntau tsuas yog feem ntawm ib micron. Yog tias koj daim ntawv thov cuam tshuam nrog tus pin tau swb rau hauv thiab tawm ntawm lub qhov khoob rov qab, qhov xim zoo nkauj ntawm qhov chaw tuaj yeem hnav sai sai, nthuav tawm cov zinc thiab tom qab ntawd lub hauv paus hlau. Rau cov xwm txheej zoo li no, cov txheej zinc thicker nrog cov ntshiab lossis daj chromate (uas zoo li tuab me ntsis) tuaj yeem ua rau nyias nyias, zoo nkauj dub chromate, txawm tias cov xim dub muaj ntau dua nominal ntsev tshuaj ntsuam xyuas hauv qhov kev sim zoo li qub.

Kev raug tshuaj lom neeg yog lwm tus neeg tua neeg uas ntsiag to. Xav txog cov rooj sib txoos ze ntawm cov roj teeb, lossis hauv cov tshuab uas siv cov roj nplua nyeem lossis cov kuab tshuaj ntxuav. Qee cov tshuaj ntxuav alkaline tuaj yeem strip chromate coatings txoj cai tawm. Peb muaj rooj plaub nrog pins siv nyob rau hauv lub tsheb sensor bracket. Lawv teev ib lub xiav zinc-plated tus pin ncej rau kev tiv thaiv corrosion. Lub rooj sib txoos cog tau siv qee hom tshuaj ntxuav tais diav ntawm chav tsev zaum kawg. Tsis pub dhau lub lis piam, cov txheej xiav tau hloov pauv thiab npub. Qhov teeb meem yog pH tsis sib haum. Cov yeeb yaj kiab chromate tsis ruaj khov hauv qhov chaw tshuaj lom neeg tshwj xeeb. Qhov kev kho tsis yog zinc plating zoo dua, tab sis hloov mus rau qhov sib txawv chromate chemistry (ib qho tsis sib xws tsis siv neeg hexavalent) uas yog tshuaj lom neeg ntau dua rau qhov chaw.

Tom qab ntawd muaj hydrogen embrittlement. Rau cov hlau pins muaj zog (siab dua ~ 40 HRC), cov txheej txheem electroplating tuaj yeem qhia hydrogen rau hauv cov hlau, ua rau nws nkig thiab ua rau muaj kev puas tsuaj tam sim ntawd. Qhov no tsis yog qhov teeb meem kom zoo nkauj durability; nws yog kev ua haujlwm tsis ua haujlwm. Txhua lub tuam txhab muaj koob npe cuam tshuam nrog cov pins tawv tawv yuav tsum suav nrog cov txheej txheem ci tom qab plating kom tshem tawm cov hydrogen. Nws ntxiv cov nqi thiab sijhawm, thiab qee zaum nws muaj nqis-tsim tawm los ntawm cov neeg muag khoom txiav cov ces kaum. Nco ntsoov nug yog tias ci nrog rau qhov chaw muaj zog. Nws yog non-negotiable.

Handan piv txwv thiab kev ua lag luam tawm tswv yim

Ua haujlwm nrog cov tuam txhab ntim khoom hauv cov chaw xws li Yongnian District, koj pom cov kev lag luam tawm hauv lub sijhawm. Ib lub tuam txhab zoo li Handan Zitai Fastener Chaw tsim tshuaj paus (koj tuaj yeem pom lawv qhov ntau ntawm https://www.zitaifasteners.com) yog teem rau scale, nyob rau hauv txoj cai ntawm kev thauj mus los loj. Lawv qhov zoo dua yog ua kom zoo ib yam, ua haujlwm siab. Rau tus qauv xim zinc-plated tus pin daim ntawv thov-xav cov rooj tog hauv tsev, cov khoom siv sib txuas tsis tseem ceeb, cov khoom siv hluav taws xob-lawv tuaj yeem xa cov khoom siv tau zoo heev, tsim nyog. Lub durability yuav zoo rau benign sab hauv ib puag ncig.

Tab sis rau cov ntawv thov tseem ceeb lossis hnyav, koj yuav tsum koom nrog tob. Nws yog hais txog kev qhia cov ntsiab lus: zinc thickness (piv txwv li, 8-12μm min), hom chromate (piv txwv li, dub chromate rau me ntsis zoo dua corrosion, iridescent rau kev zoo nkauj), thiab tom qab plating sealant los yog topcoat. Yog lawm, cov txheej txheem ntshiab ntawm cov zinc plating tuaj yeem ua rau muaj kev puas tsuaj thiab tshuaj lom neeg. Nws ntxiv lwm kauj ruam thiab tus nqi, tab sis nws hloov pauv lub neej hauv thaj teb. Nws yog qhov sib txawv ntawm tus pin rau menyuam yaus cov khoom ua si thiab tus pin rau marine lawj haum.

Kev soj ntsuam tsis ua tiav yog koj tus kws qhia ntawv zoo tshaj plaws. Peb ib zaug tau txais ib pawg ntawm cov xim daj zinc-plated cotter pins rau cov khoom siv ua liaj ua teb. Cov ntawv ceeb toom teb tuaj ntawm xeb hnyav tom qab ib lub caij. Kev soj ntsuam kuaj pom pom tias txheej chromate tsis tau tsim kho, yuav luag tsis muaj nyob hauv qhov chaw. Cov xim daj feem ntau yog xim daj. Lub hauv paus ua rau? Ib lub pas dej chromate uas tus neeg muag khoom tau sim ncab. Zaj lus qhia: ntseeg tab sis txheeb xyuas. Kev kuaj thib peb ntawm cov qauv random los ntawm cov khoom tsim khoom yog kev pov hwm pheej yig. Tsis txhob cia siab rau daim ntawv pov thawj zeb.

Yog li, Dab tsi yog Qhov Kev Txiav Txim Siab Ntawm Kev Ua Haujlwm?

Nws yog conditional. Ib tug zoo ua zinc-plated tus pin ncej nrog ib tug zoo chromate hloov dua siab tshiab txheej yog ruaj txaus rau ib tug loj array ntawm daim ntaub ntawv. Nws muab kev tiv thaiv corrosion zoo thiab hnav tsis kam. Cov xim tiav muaj qhov yooj yim teeb meem thiab kev zoo nkauj. Tab sis nws cov kev txwv yog qhov tseeb: kev puas tsuaj tas mus li, muaj zog acids lossis alkalis, qhov kub thiab txias ib puag ncig, thiab kev nqhis dej tsis tu ncua yuav kov yeej nws.

Yog tias koj xav tau ntau dua, koj nce mus rau kev siv tshuab plating (zoo dua rau cov duab nyuaj, tsis tshua muaj kev pheej hmoo ntawm embrittlement), lossis coatings zoo li geomet lossis dacromet, lossis thaum kawg, stainless hlau. Tab sis rau tus nqi, zinc-plated tus pin yog ib qho nyuaj rau tuav. Qhov tseem ceeb yog tswj cov kev cia siab thiab qhia kom raug. Tsis txhob sau xiav zinc xwb. Qhia cov qib ntawm cov khoom siv hauv paus, lub zog tensile, qhov tsawg kawg nkaus zinc thickness, cov txheej txheem chromate (xws li ISO 4042, ASTM B633 Hom II), thiab txhua yam yuav tsum tau ua tom qab kev kho mob xws li ci lossis sealing.

Thaum kawg, durability tsis yog khoom ntawm cov xim. Nws yog cov cuab yeej ntawm tag nrho cov saw hlau-los ntawm cov hlau zeb mus rau kev tsim, kev kho cua sov, plating chemistry, thiab kev tswj cov txheej txheem. Ib tus pin los ntawm cov neeg tsim khoom muaj kev qhuab qhia nrog nruj specs tuaj yeem kav xyoo. Ib tus pin zoo tib yam los ntawm lub khw lax yuav tsis ua rau nws dhau lub caij ntuj sov. Qhov txawv yog nyob rau hauv cov ntsiab lus koj yeej tsis pom kom txog thaum nws ua tsis tiav.