Txawm hais tias cov khoom xaiv yog "stainless steel", cov pob zeb xeb tshwm ob peb lub lis piam tom qab xa khoom? Los yog, koj puas xav tsis thoob ntawm passivation thiab electropolishing rau qhov chaw, tsis paub meej tias cov nqi xa khoom kim tshaj - cov nqi ua haujlwm puas tsim nyog?
Nyob rau hauv lub teb ntawm precision machining nto kev kho mob, xaiv cov txheej txheem raug yog sib npaug zos qhov tseem ceeb raws li kev xaiv cov qib alloy tsim nyog. Kev kho deg tsis yog tsuas yog ua kom cov khoom zoo dua qub, tab sis kuj hais txog kev ua kom muaj peev xwm ntawm cov khoom siv. Kab lus no yuav pab tau koj. Hansheng Automation yuav nthuav tawm cov qauv kev tshawb fawb tom qab stainless hlau "stainless", ua tib zoo tshuaj xyuas yim txheej txheem tseem ceeb, thiab muab cov txheej txheem xaiv plaub kauj ruam meej.
Vim li cas ' stainless hlau ' kuj yuav tsum tau kho saum npoo?
Yuav kom nkag siab txog kev kho deg, ib tus yuav tsum xub nkag siab tias vim li cas cov hlau tsis muaj xeb resistant. Qhov zais cia nyob hauv Chromium. Thaum cov hlau tsis muaj hlau raug cov pa oxygen, lub microscopic thiab ntom chromium oxide passivation zaj duab xis yog tsim rau saum npoo ntawm chromium. Cov txheej txheej ntawm daim nyias nyias no zoo li daim tawv nqaij, muaj peev xwm kho tus kheej thiab thaiv corrosion.
Vim li cas nws tseem xeb?
Thaum lub sij hawm CNC machining, muaj peb yam uas tuaj yeem ua rau cov ntaub thaiv npog no puas:
Dawb Hlau Pollution:Cov kab hlau txuas ntawm cov cuab yeej steel hlau los yog cov khoom siv yuav embed rau saum npoo ntawm stainless hlau. Tom qab xeb, cov hlau hais no yuav dhau los ua "qhov hluav taws xob" ntawm corrosion.
Kub Tint:Qhov kub siab uas tsim los ntawm vuam lossis siab - txiav ceev tuaj yeem ua rau chromium depletion nyob rau hauv thaj tsam kub cuam tshuam, txo nws txoj kev tiv thaiv xeb.
Microscopic roughness:Cov qauv "peak hav" nyob rau saum npoo yog yooj yim rau ntxiab ya raws thiab chloride ions, cuam tshuam kev hloov pauv ntawm oxide zaj duab xis.
Yog li ntawd, kev kho saum npoo ntawm stainless hlau tsis yog hais txog "siv roj thiab hmoov", tab sis ib txheej txheem ntawm kev rov qab los thiab txhim kho - tshem tawm impurities, smoothing nto, thiab "super activating" qhov tseem ceeb chromium oxide tiv thaiv zaj duab xis.
Kev tshuaj xyuas ntawm yim qhov tseem ceeb ntawm cov txheej txheem kho mob
Pickling (Descaling)
Cov txheej txheem no suav nrog kev siv tshuaj lom neeg hnyav siv cov kua qaub uas muaj zog (feem ntau hydrofluoric acid lossis nitric acid). Los ntawm corroding ib txheej nyias ntawm cov hlau los ntawm qhov chaw, nws kom huv si tshem tawm hnyav nplai, weld spatter, thiab embedded impurities. Qhov kom zoo dua yog nws qhov ua tau zoo heev rau kev kho weld seam; Qhov tsis zoo yog tias nws tawm ntawm dull, ntxhib matte grey nto, uas yog qhov zoo nkauj tsis txaus siab. Nws yog tsim rau cov qauv weld seams, lub tank loj sab hauv, thiab cov khoom lag luam uas zoo li tsis yog qhov tseem ceeb.
Passivation
Cov txheej txheem no suav nrog cov txheej txheem tshuaj ntxuav tes siv citric lossis nitric acid (raws li ASTM A967 tus qauv). Tsis zoo li pickling, passivation tsis tshem lub hauv paus hlau. Nws xaiv yaj "dawb hlau" cov kab mob nyob rau ntawm qhov chaw, ua kom yooj yim dua thiab denser tsim ntawm chromium- nplua nuj txheej yam tsis hloov qhov ntev lossis qhov roughness. Qhov zoo muaj xws li tus nqi qis thiab tswj xyuas qhov ua siab ntev. Nws yog tsim rau precision machined Cheebtsam xws li aerospace fasteners, li qub, kua connectors, thiab cov khoom zoo sib xws.
Electropolishing (EP)
Cov txheej txheem no feem ntau yog immersing cov khoom hauv cov tshuaj electrolyte thiab dhau cov hluav taws xob tam sim no. Nws tsuas yog tso siab rau cov tshuaj tiv thaiv electrochemical kom nyiam ua kom cov kab mob me me (peaks) rau ntawm qhov chaw, ua tiav cov micro- cov nyhuv du. Qhov zoo muaj xws li kev huv thiab tsis muaj menyuam; qhov tsis zoo yog cov nqi siab dua piv rau passivation thiab tshem tawm cov khoom me me (0.01mm - 0.02mm), yuav tsum tau them nyiaj rau machining. Nws yog qhov tsim nyog rau kev kho mob -qib qhov chaw, cov kav dej tshuaj, cov khoom siv ua zaub mov, thiab cov khoom siv semiconductor.
Mechanical Polishing & Txhuam Txhuam
Cov txheej txheem no feem ntau yog siv cov xuab zeb siv thiab cov ntaub qhwv lub log rau lub cev zom cov khoom. Qhov kom zoo dua yog tias daim iav- cov khoom tiav stainless hlau zoo li luxurious; qhov tsis zoo yog qhov xav tau rau cov nqi ua haujlwm, thiab yog tias tsis tau ntxuav kom huv si, qhov seem polishing ciab lossis abrasives tuaj yeem ua rau xeb. Nws yog tsim rau architectural decorative panels, cov khoom siv hauv chav ua noj, thiab cov khoom siv hluav taws xob sab nrauv sab nrauv.
Bead Blasting
Siab - nrawm nrawm ntawm qhov chaw siv cov xov xwm xws li iav hlaws lossis cov xuab zeb ceramic. Qhov zoo muaj xws li matte tiav thiab zoo li qub; qhov tsis zoo muaj feem ntau ntawm thaj chaw saum npoo av, ua rau nws yooj yim rau nqus cov ntiv tes thiab av. Nws yog qhov tsim nyog rau cov cuab yeej siv niaj hnub no hauv tsev, cov khoom siv neeg hlau, thiab ua ntej - kho ua ntej txheej.
Tshuaj blackening
Cov txheej txheem no suav nrog kev tso rau hauv qhov chaw siab -kub oxidizing ntsev tov, tsim cov oxide dub rau ntawm qhov chaw. Qhov zoo muaj xws li tshem tawm cov kev xav tsis muaj qhov nce ntxiv; Qhov tsis zoo yog qhov hnav tsis zoo piv rau PVD. Nws yog haum rau cov khoom siv kho qhov muag (anti-reflective) thiab cov khoom siv tub rog.
Electroplating (Nickel / Chrome)
Cov txheej txheem no tso ib txheej ntawm npib tsib xee los yog chromium rau ntawm qhov chaw, hloov kho lawv lub cev (xws li txhim kho hnav tsis kam los ntawm tawv chrome plating). Nws qhov zoo dua yog siab hardness; Txawm li cas los xij, qhov tsis zoo yog qhov pheej hmoo ntawm txheej txheej (flaking). Nws yog haum rau ncej- yam khoom uas yuav tsum tau tshwj xeeb hnav tsis kam los yog tshwj xeeb zoo nkauj tiav.
PVD Vacuum Txheej (Lub Cev Vapor Deposition)
Cov txheej txheem no ntog nyob rau hauv lub cev vapor deposition, nrog rau deposition ntawm ceramic films (xws li titanium nitride) nyob rau hauv lub tshuab nqus tsev vacuum. Nws qhov zoo muaj xws li kev ua haujlwm siab thiab kev zoo nkauj; qhov tsis zoo yog qhov yuav tsum tau muaj siab heev rau substrate nto tiav (kev ua ntej yuav tsum yog flawless).
Yuav xaiv li cas? Hansheng muab plaub lub tswv yim
1. Qhia meej meej lub hom phiaj tseem ceeb
Rust prevention of parts? --->Passivation.
Are the parts sterile and easy to clean? --->Electropolishing.
Visual impact? --->Daim iav polished PVD.
Covering scratches/durable? --->Hlau kos duab los yog sandblasting.
2. Kev ntsuas nyiaj txiag
Tus nqi ntawm stainless hlau nto kho qhov ntau ntawm qis mus rau siab, suav nrog pickling / passivation, sandblasting, mechanical polishing, electrolytic polishing, thiab PVD txheej. Thov xaiv cov txheej txheem kho saum npoo uas tsim nyog raws li cov peev nyiaj tiag tiag.
3. Xav txog cov qauv geometric ntawm cov khoom
Cov qauv geometric ntawm ntau qhov chaw sib txawv, qee qhov yooj yim thiab qee qhov nyuaj. Piv txwv li, qhov chaw nrog cov kab noj hniav nyuaj yog tsim rau electrolytic polishing (uas tuaj yeem ua tiav qhov twg cov kua tuaj yeem ntws).
4. Tshawb xyuas kev ua raws cai
Yog tias nws yog cov cuab yeej kho mob, ISO 13485 lossis FDA feem ntau tswj hwm ASTM A967 passivation lossis electrolytic polishing kom ntseeg tau tias biocompatibility.
Kev sib piv ceev
| Lub npe txheej txheem | Lub Hom Phiaj | Qhov tshwm sim hloov | Corrosion Resistance | Nqi |
|---|---|---|---|---|
| Passivation | Ntxuav + Tiv thaiv xeb | Tsis hloov | Zoo | Tsawg |
| Electropolishing | Kev tu cev + Micro-flattening | Ci ntsa iab + Reflective | Zoo heev | Nruab nrab |
| Pickling | Tshem tawm qhov chaw weld | Matte grey | Zoo (restores puag khoom) | Tsawg |
| Sandblasting | Uniform tsos | Npuag + Matte | Nruab nrab | Tsawg- Nruab nrab |
| txhuam hniav | Kho kom zoo nkauj + Tus ntiv tes tiv thaiv | Filament kev ntxhib los mos | Nruab nrab | Nruab nrab |
| Daim iav Polishing | High -kev zoo nkauj kawg | Daim iav tiav | Zoo | Siab |
| PVD txheej | Hardness + Xim | Kub / Dub / Xim | Zoo heev | Siab |
Common Myths & Expert Advic
1: "Passivation tshem tawm weld nplai."
Kho: Tsis yog Passivation tsuas yog tshem tawm cov hlau dawb xwb. Yog tias koj pom qhov kub hnyiab lossis nplai, koj yuav tsum Pickle lossis Bead Blast ua ntej Passivating.
2: "Electropolishing kho cov machining tsis zoo."
Kho: Electropolishing tshem tawm cov khoom sib xws. Yog tias koj CNC machining sab laug cov cuab yeej sib sib zog nqus los yog khawb, electropolishing yuav ua rau lawv pom ntau dua, tsis tsawg.
Cov tswv yim tshaj lij: Cov ntsiab lus "Substrate".
Qhov zoo ntawm qhov chaw tiav yog 80% txiav txim siab los ntawm CNC machining zoo ua ntej kev kho mob txawm pib.
Rau PVD
Qhov saum npoo yuav tsum yog hauv av mus rau qhov tseeb ntawm Ra 0.2 los yog zoo dua los xyuas kom meej adhesion.
Rau Daim iav Polish
Yog hais tias lub machining tolerances yog xoob, polishing yuav hloov qhov geometry, ua rau muaj teeb meem sib dhos.
Qhov no yog vim li casprecision machining nto tiavkev tswj hwm yog qhov tseem ceeb. Ntawm peb qhov chaw, peb siv cov tshuab muaj peev xwm ntawm ± 0.002mm ultra- daim iav machining. Los ntawm kev ua tiav qhov ze ntawm - zoo meej nto thaum lub sij hawm tig los yog milling theem, peb txo tus nqi ntawm phau ntawv polishing thiab xyuas kom meej PVD coatings daim ntawv cog lus zoo kawg nkaus.
Xaus
Xaiv txoj cai stainless hlau nto kho yog qhov sib npaug ntawm kev ua haujlwm, zoo nkauj, thiab tus nqi. Tab sis qhov zais cia rau qhov ua tiav tsis yog tsuas yog xaiv cov txheej txheem xwb - nws yog tswj hwm qhov kev ua haujlwm.
Thaum koj sib cais machining thiab ua tiav ntawm cov neeg muag khoom sib txawv, koj muaj kev pheej hmoo siab ua yuam kev ("Plater ntxiv cov khoom siv ntau dhau!") thiab ntiv tes - taw tes.
Vim li cas ho tsis muab lawv ua ke?
Thaum koj tso siab rau ob qho tib si precision CNC machining thiab nto tiav rau ib leeg, kws tshaj lij, koj tau txais:
Kev Them Nyiaj Them Nqi Them Nqi: Peb kho qhov ntev machining (offsets) kom suav nrog cov txheej tuab lossis cov khoom tshem tawm.
Kev lav phib xaub: Ib tus neeg muag khoom muaj lub luag haujlwm rau qhov kawg ntawm qhov zoo.
Ceev: Seamless hloov los ntawm lub tshuab khw mus rau txoj kab tiav.
Npaj kom nce koj qhov chaw?
Yog tias koj tab tom nrhiav rau tus neeg tsim khoom lag luam txhim khu kev qha uas nkag siab txog "hlau" thiab "tiav", peb nyob ntawm no los pab. Txawm hais tias koj xav tau kev kho mob - qib electropolished tivthaiv lossis PVD- cov khoom siv coated, peb pab pawg engineering muaj kev sab laj DFM dawb los coj koj mus rau qhov kev daws teeb meem zoo tshaj plaws.
[Nrhiav Peb Cov Kev Sib Txuas Ua Haujlwm &Kev Pab Cuam Kawg] los yog [Tiv tauj peb rau Daim Ntawv Tso Cai Hnub No]
FAQ
Puas yuav PVD txheej tev lossis tev tawm zoo li electroplating?
Feem ntau, qhov xwm txheej no tsis tshwm sim. Vim tias PVD yog ib qho kev sib txuas ntawm atomic qib tsim nyob rau hauv lub tshuab nqus tsev, cov zaj duab xis txheej tau nkag mus rau saum npoo ntawm substrate. Ntev npaum li cov txheej txheem dhau los raug ntxuav kom huv si thiab cov khoom siv hauv qab yog qhov nyuaj txaus (xws li cov hlau tsis muaj steel), PVD txheej yog hnav heev - tiv taus thiab yuav tsis tev tawm zoo li chrome plating.
Kuv puas tuaj yeem welding tom qab kho qhov chaw?
Peb tsis pom zoo ua qhov no. Qhov kub siab uas tsim los ntawm vuam tuaj yeem ua rau cov txheej txheem passivation, hlawv tawm ntawm electrolytic polishing nto, thiab ua kom puas PVD zaj duab xis txheej.
Puas yog txhua qib stainless hlau xav tau passivation? Koj puas tseem xav tau 316?
Yog lawm. Txawm hais tias 316 stainless hlau muaj kev tiv thaiv corrosion ntau dua li 304, nws kuj tuaj yeem kis tau los ntawm cov hlau dawb ntawm lub cuab yeej thaum ua. Yog tias passivation tsis tau ua tiav, "xeb pob" tshwm sim los ntawm kev sib kis ntawm cov hlau tseem yuav tshwm sim rau ntawm 316.
Ntau npaum li cas cov khoom yuav raug tshem tawm los ntawm electrolytic polishing? Nws puas yuav cuam tshuam rau kuv qhov kev ua siab ntev?
Electrolytic polishing feem ntau tshem tawm cov khoom ntawm kwv yees li 0.01mm-0.025mm ntawm ob sab. Rau cov khoom siv high-precision, qhov no yuav tsum tau muab coj los txiav txim siab thaum lub sijhawm tsim qauv. Raws li tus kws tshaj lij kev lag luam, peb yuav khaws qhov kev sib tw no thaum lub sijhawm CNC machining theem kom ntseeg tau tias cov khoom tiav polished qhov ntev yog qhov tseeb nyob rau hauv qhov kam rau ua.
Cov ntaub ntawv
ASTM A967 / A967M - 17: Txuj Specification rau Tshuaj Passivation Treatments rau Stainless Steel Parts. (ASTM International).
ASTM B912 - 02(2018): Txuj Specification rau Passivation ntawm Stainless Hlau Siv Electropolishing. (ASTM International).
ASTM A380 / A380M - 17: Kev coj ua qauv rau kev ntxuav, tshem tawm, thiab Passivation ntawm Stainless hlau qhov chaw, khoom siv, thiab cov tshuab.
ISO 13485: 2016: Cov khoom siv kho mob - Kev tswj hwm kev ua haujlwm zoo - Cov kev xav tau rau kev tswj hwm lub hom phiaj.