Yog tias koj tau yuav los yog qhia3D Printing Nrog Hlauqhov chaw rau lub sijhawm ntev npaum li cas, tej zaum koj tau muaj qhov kev paub no: cov khoom zoo meej thaum lawv tawm ntawm lub tshuab, tau txais kev pom zoo hauv thawj qhov kev tshuaj xyuas, thiab tom qab ntawd - lub lis piam lossis hli tom qab - pib pom cov pob xeb, pitting, lossis kev poob qis hauv thaj teb.
Kuv tau zaum hla lub rooj los ntawm ntau tus kws ua haujlwm ntxhov siab thiab cov neeg saib xyuas kev yuav khoom uas tau siv nyiaj zoo rau SLM 3D Printing Hlau nkaus xwb los saib cov khoom tsis ua ntsev- tshuaj tsuag los yog tiag tiag - ntiaj teb raug. Qhov kev xav tsis zoo tshaj plaws uas kuv hnov? "Nws yog stainless hlau - nws yuav tsum tsis xeb."
Nov yog qhov tseeb los ntawm ib tus neeg uas tau pom ntau pua ntawm cov haujlwm no: kev kho saum npoo feem ntau yog qhov sib txawv ntawm ib feem uas kav ntau xyoo thiab ib qho uas tsis ua haujlwm hauv lub hlis. HauvSLM 3D Printing Hlau, raws li - luam tawm saum npoo yog koj qhov kev pheej hmoo loj tshaj plaws. Hnub no kuv tab tom rub daim ntaub rov qab rau qhov tseeb tias yog vim li cas thiaj li tshwm sim thiab koj tuaj yeem ua li cas txog nws.
Lub Cim Nto Geography ntawm SLM 3D Printing Hlau
Tsis zoo li CNC machining, uas tshem tawm cov khoom kom huv si, SLM tsim cov txheej txheem los ntawm txheej los ntawm hmoov. Txhua txheej yog melted los ntawm ib tug laser, thiab cov tshwm sim yog ib tug nto tag nrho ntawm ib feem ntawm melted hmoov hais, txheej kab, thiab microscopic hav - classic "staircase effect."
Ib yam li - luam tawm Ra qhov muaj nuj nqis ntawm 8-25 μm, qee zaum siab dua rau hauv qab -fab qhov chaw. Qhov ntawd tsis yog " ntxhib" xwb - nws yog ib qho toj roob hauv pes ntawm me me crevices thiab xoob particles uas ua zoo li hlau nplaum rau ya raws, chlorides, thiab cov kab mob. Cov yam ntxwv no tig ib qho kev txhim kho theoretically-cov alloy resistant rau hauv ib feem uas corrodes sai tshaj qhov xav tau.
Ib nrab melted hmoov hais yog qhov teeb meem tshwj xeeb. Lawv tsim galvanic hlwb thiab ntxiab electrolytes, accelerating localized corrosion. Qhov no yog vim li cas ntau tus neeg siv khoom uas hla qhov chaw tiav tiav nrog kev ua tsis tiav ntxov, txawm tias siv cov hmoov zoo.
Yuav ua li cas Nto Roughness ua rau Corrosion
Corrosion nyob rau hauv SLM qhov feem ntau tshwm sim nyob rau hauv ob lub ntsiab lus:
Crevice Corrosion: Cov khoob me me thiab cov kwj deg ua rau cov kua dej tsis zoo. Cov pa oxygen poob rau hauv qhov crevice thaum cov cheeb tsam ib puag ncig nyob twj ywm oxygenated, tsim kom muaj roj corrosive uas noj rau hauv cov hlau.
Pitting Corrosion: Ib qhov tob tob los yog cov khoom sib txuas ua qhov chaw pib. Thaum cov txheej txheem oxide passive raug ua txhaum cai, lub qhov dej loj hlob sai, feem ntau ua rau cov txheej txheem tsis ua haujlwm ntev ua ntej qhov seem ntawm qhov pom kev puas tsuaj.
Qhov smoother ntawm qhov chaw, qhov sib xws thiab ruaj khov ntawm cov txheej txheem oxide passive (Cr₂O₃ ntawm stainless hlau, TiO₂ ntawm titanium). Rough nto cuam tshuam cov txheej txheem no thiab muab suav tsis txheeb pib cov ntsiab lus rau kev tawm tsam.
Quantitative Data(tiag -world testing averages):
|
Surface condition |
Ra nqi |
Pitting Potential (mV) |
Corrosion Rate nyob rau hauv ntsev tsuag (mm / xyoo) |
|
Raws li - luam tawm SLM |
12–20 μm |
+180 – +320 |
0.45 – 0.82 |
|
Bead Blasted |
3–6 μm |
+420 – +580 |
0.18 – 0.35 |
|
Mechanically Polished |
0.8–2.0 μm |
+650 – +820 |
0.06 – 0.12 |
|
Electropolished |
0.1–0.4 μm |
+920 – +1150 |
<0.02 |
Siab dua pitting muaj peev xwm=zoo dua. Cov ntaub ntawv tsis dag - nto tiav tuaj yeem txhim kho corrosion kev ua tau zoo los ntawm qhov kev txiav txim loj.
Tsis yog Alloys React tib yam
316L Stainless Hlau Qhov kev xaiv ntau tshaj plaws rau cov lag luam wholesale hlau 3D luam ntawv cov kev pab cuam nyob rau hauv corrosive ib puag ncig. Nws tso siab rau nws cov chromium- nplua nuj txheej txheej. Raws li - luam tawm 316L yog qhov tshwj xeeb yog qhov tsis zoo vim tias qhov nrawm nrawm thiab txias tuaj yeem ua rau micro- cais tawm thiab nto oxides. Electropolishing kom zoo tsis yog tsuas yog smooths saum npoo, tab sis kuj txhawb cov ntsiab lus chromium ntawm qhov chaw, ua kom muaj kev ua tau zoo.
Titanium (Ti-6Al-4V) Zoo heev corrosion kuj ua tsaug rau nws ruaj khov TiO₂ txheej. Txawm li cas los xij, raws li-luam tawm titanium tseem nqa cov ntaub ntawv alpha thiab xoob txuas txuas uas yuav tsum tau muab tshem tawm. Hauv kev siv dej hiav txwv lossis tshuaj lom neeg, txawm tias titanium tau txais txiaj ntsig los ntawm kev kho qhov chaw.
Nickel-raws li Superalloys (IN718, IN625) Siv nyob rau hauv siab - kub thiab corrosive heev. Lawv zam txim ntau dua li cov hlau tsis huv tab sis tseem raug kev txom nyem los ntawm cov oxides saum npoo thiab cov txheej txheem sib cais. Kev kho cua sov + kev ua tiav tsis yog - sib tham tau ntev - lub sij hawm durability.
Ib tug zoo kev cai SLM 3D luam ntawv muab kev pab cuam to taub qhov sib txawv thiab tailors ob qho tib si luam ntawv parameters thiab post- ua raws li.
Qhov tseem ceeb ntawm kev kho deg kom nres Corrosion
Nov yog qhov ua tau zoo hauv kev xyaum:
Mechanical Polishing & Sandblasting Zoo thawj kauj ruam kom tshem tawm cov hmoov xoob thiab txo cov roughness tag nrho. Tsis txaus ib leeg rau ib puag ncig hnyav.
Electropolishing Tus qauv kub rau qhov nyuaj SLM. Nws tshem cov peaks, deburrs, thiab txhim kho cov txheej txheem passive ib txhij. Zoo heev rau cov channel sab hauv uas lwm txoj hauv kev tsis tuaj yeem ncav cuag.
Tshuaj Passivation Ntxiv dag zog rau kev tiv thaiv oxide zaj duab xis tom qab smoothing.
Kev kho cua sov feem ntau raug saib tsis taus raws li cov cuab yeej tiv thaiv corrosion, tab sis kev ntxhov siab annealing txo qis micro-galvanic hlwb tshwm sim los ntawm cov kev ntxhov siab uas seem.
Qhov zoo tshaj plaws kev lag luam hlau 3D tshuab luam ntawv koom ua ke nrog cov kauj ruam no rau hauv cov txheej txheem validated es tsis kho lawv li ntxiv -ons.
Tiag -Lub Ntiaj Teb Scenarios
Marine Industry Offshore sensor vaj tse thiab li qub luam tawm hauv 316L. Raws li - cov ntawv luam tawm ua tsis tiav ntsev- kev tshuaj tsuag hauv qab 100 teev. Tom qab electropolishing + passivation, tib qhov tsim tau tshaj 1,000 teev nrog tsawg pitting.
Kev Kho Mob Implants Rough nto yog txhob txwm siv rau hauv cov pob txha-cov chaw sib cuag rau osseointegration, tab sis tag nrho lwm qhov chaw yuav tsum du. Kev ua tiav tsis zoo ntawm no ua rau ion tso tawm thiab mob.
Chemical Processing Acid- tuav manifolds. Cov npoo sab hauv du yog qhov tseem ceeb - txawm tias cov qhov me me tuaj yeem ua rau cov dej xau thiab kev puas tsuaj loj.
Sib piv cov nqi: Tshaj tawm -Kev Ua Haujlwm vs. Qhov Hloov Hloov
Kev ua tiav tuaj yeem ntxiv 20-40% rau tus nqi ib feem, tab sis hla nws feem ntau raug nqi 5-10 × ntau dua thaum koj ua qhov kev sim ua tsis tiav, kev hloov pauv, lub sijhawm poob, thiab muaj peev xwm lav tau. Ib tus neeg siv khoom hauv marine sector txo lawv cov kev hloov pauv txhua xyoo los ntawm 65% tom qab siv cov txheej txheem saum npoo kom raug.
Cov lus nug nquag
Kuv puas tuaj yeem siv 3D luam ntawv hlau hauv dej hiav txwv tsis muaj polishing?
Feem ntau tsis muaj. Txawm tias titanium tau txais txiaj ntsig los ntawm kev ua tiav kom zoo nyob rau hauv ntev - lub sij hawm raug dej hiav txwv.
Puas yog sandblasting txhim kho lossis ua mob rau corrosion?
Nws pab ua ntej - kauj ruam los ntawm kev tshem tawm cov khoom xoob, tab sis ib leeg nws feem ntau tsis txaus. Nws yuav tsum tau ua raws li polishing los yog passivation.
Dab tsi yog qhov zoo tshaj Ra tus nqi rau corrosion -resistant 316L ib feem?
Ra 0.2-0.4 μm rau feem ntau aggressive ib puag ncig. Hauv qab 0.8 μm yog qhov tsawg kawg nkaus rau kev ua haujlwm zoo.
Vim li cas kuv cov khoom 3D luam tawm muaj "xeb" txawm tias ua los ntawm Titanium?
Feem ntau yog vim muaj kab mob ntawm qhov chaw, embedded hmoov, los yog alpha case. Kev tu kom zoo thiab etching daws qhov no.
Kev kho deg hauv SLM 3D Printing Hlau tsis yog cov tshuaj pleev ib ce ntxiv - nws yog ib qho tseem ceeb tshaj plaws uas txiav txim siab tiag - ntiaj teb durability. Qhov sib txawv ntawm ib feem uas ua tau zoo rau ntau xyoo thiab ib qho uas ua tsis tau ntxov ntxov feem ntau los mus rau qhov zoo ntawm qhov chaw npaj.
Yog tias koj tab tom nrhiav kev lag luam wholesale hlau 3D luam ntawv cov kev pabcuam lossis ua haujlwm nrog lub Hoobkas muaj hlau 3D luam ntawv, ua kom tiav qhov kawg ntawm kev sib tham los ntawm hnub ib. Nug txog lawv cov txheej txheem khiav, cov ntaub ntawv siv tau, thiab kev paub nrog koj ib puag ncig tshwj xeeb.
Cov chaw tsim khoom hlau 3D luam ntawv zoo yuav tsis yog luam koj cov khoom xwb - lawv yuav xa cov khoom uas muaj sia nyob ntawm cov xwm txheej koj pov rau lawv.
Xav tau kev pab ntsuam xyuas koj tus neeg muab khoom tam sim no lossis kho qhov chaw kho kom zoo rau koj qhov project tom ntej? Xav tias dawb mus cuag. Tom qab pom ntau pua ntawm cov xwm txheej no, feem ntau kuv tuaj yeem pom cov kev pheej hmoo zais tau sai sai - thiab qhov tseem ceeb tshaj, qhia koj yuav kho lawv li cas ua ntej lawv dhau los ua teeb meem kim.