Kev kho deg ntawm cov hlau nplaum
Kev kho deg ntawmneodymium hlau nplaumplays lub luag haujlwm tseem ceeb hauv lawv qhov kev ua tau zoo thiab kev ua haujlwm ntev. Neodymium hlau nplaum, tseem hu ua NdFeB hlau nplaum, yog cov hlau nplaum ruaj khov uas muaj zog heev ua los ntawm cov hlau nplaum, boron, thiab neodymium. Kev kho deg yog hais txog cov txheej txheem ntawm kev siv cov txheej txheem tiv thaiv lossis txheej txheej rau sab nrauv ntawm cov hlau nplaum neodymium. Qhov kev kho no yog tsim nyog los tiv thaiv cov hlau nplaum los ntawm corroding thiab txhim kho nws tag nrho durability. Feem ntau hom kev kho deg rau cov hlau nplaum neodymium muaj xws li NiCuNi plating, Zinc plating, thiab Epoxy txheej.
Ib qho ntawm cov laj thawj tseem ceeb vim li cas qhov kev kho saum npoo yog qhov tseem ceeb rau cov hlau nplaum neodymium yog lawv qhov cuam tshuam rau corrosion. Cov hlau nplaum neodymium feem ntau yog tsim los ntawm cov hlau, uas yooj yim rau xeb thaum raug ya raws thiab oxygen. Los ntawm kev siv cov txheej tiv thaiv, corrosion tuaj yeem txo qis, ua kom lub neej ntev ntawm cov hlau nplaum.
Lwm qhov laj thawj rau kev kho saum npoo yog txhawm rau txhim kho cov hlau nplaum ua haujlwm. Cov txheej txheej tuaj yeem muab cov npoo du, txo kev sib txhuam thiab tso cai rau cov khoom sib nqus zoo dua. Qee qhov kev kho mob saum npoo, xws li npib tsib xee plating lossis kub plating, tuaj yeem txhim kho cov hlau nplaum tiv thaiv qhov kub thiab txias, ua rau nws haum rau cov ntawv thov uas muaj cua sov. Kev kho deg kuj tseem ua rau cov hlau nplaum neodymium sib haum nrog ntau qhov chaw thiab kev siv. Piv txwv li, epoxy txheej tuaj yeem muab cov rwb thaiv tsev, tso cai rau cov hlau nplaum siv rau hauv cov ntawv thov hluav taws xob yam tsis muaj kev cuam tshuam luv luv. Cov coatings tseem tuaj yeem tiv thaiv cov hlau nplaum los ntawm cov tshuaj lom neeg lossis kev puas tsuaj, ua rau nws tsim nyog siv rau hauv qhov chaw corrosive lossis hauv cov ntawv thov uas muaj kev sib txhuam thiab hnav.
Kev kho deg yog tsim nyog rau cov hlau nplaum neodymium los tiv thaiv corrosion, txhim khu kev ua tau zoo, ua kom muaj zog, thiab ua kom muaj kev sib raug zoo nrog qee qhov chaw thiab kev siv. Los ntawm kev siv cov kev kho saum npoo tsim nyog, lub neej ntev thiab kev ua haujlwm ntawm cov hlau nplaum neodymium tuaj yeem txhim kho tau zoo.
Hauv qab no yog cov npe ntawm plating / txheej thiab lawv cov plaub rau koj siv.
| Kev kho saum npoo | ||||||
| Txheej | Txheej Thickness (μm) | Xim | Ua haujlwm kub (℃) | PCT (h) | SST (h) | Nta |
| Xiav-White Zinc | 5-20 | Xiav-dawb | ≤160 | - | ≥48 | Anodic txheej |
| Xim Zinc | 5-20 | Zaj sawv xim | ≤160 | - | ≥72 | Anodic txheej |
| Ni | 10-20 | Nyiaj | ≤390 | ≥96 | ≥12 | Kub kub kuj |
| Ni+Cu+Ni | 10-30 | Nyiaj | ≤390 | ≥96 | ≥48 | Kub kub kuj |
| Lub tshuab nqus tsev aluminizing | 5-25 | Nyiaj | ≤390 | ≥96 | ≥96 | Kev sib xyaw ua ke zoo, siab kub ua haujlwm |
| Electrophoretic epoxy | 15-25 | Dub | ≤200 | - | ≥360 | Rwb thaiv tsev, zoo sib xws ntawm thickness |
| Ni + Cu + Epoxy | 20-40 | Dub | ≤200 | ≥480 | ≥720 | Rwb thaiv tsev, zoo sib xws ntawm thickness |
| Aluminium + Epoxy | 20-40 | Dub | ≤200 | ≥480 | ≥504 | Rwb thaiv tsev, muaj zog tiv thaiv ntsev tsuag |
| Epoxy tshuaj tsuag | 10-30 | Dub, Grey | ≤200 | ≥192 | ≥504 | Rwb thaiv tsev, kub tsis kam |
| Phosphating | - | - | ≤250 | - | ≥0.5 | Tus nqi qis |
| Passivation | - | - | ≤250 | - | ≥0.5 | Tsawg nqi, invironment tus phooj ywg |
| Tiv tauj peb cov kws tshaj lijrau lwm cov txheej txheem! | ||||||
Hom txheej txheej rau hlau nplaum
NiCuNi: Cov txheej npib tsib xee yog tsim los ntawm peb txheej, npib tsib xee-tooj liab-nickel. Hom txheej txheej no yog siv dav tshaj plaws thiab muab kev tiv thaiv corrosion ntawm cov hlau nplaum nyob rau sab nraum zoov. Cov nqi ua haujlwm tsawg. Qhov siab tshaj plaws ua haujlwm kub yog kwv yees li 220-240ºC (nyob ntawm qhov ua haujlwm siab tshaj plaws ntawm cov hlau nplaum). Cov txheej txheem no yog siv rau hauv tshuab, tshuab hluav taws xob, khoom siv kho mob, sensors, kev siv tsheb, kev tuav pov hwm, txheej txheej txheej txheej txheej txheej txheej txheej txheej, thiab cov twj tso kua mis.
Dub Nickel: Cov khoom ntawm cov txheej txheem no zoo ib yam li cov txheej txheem nickel, nrog rau qhov sib txawv ntawm cov txheej txheem ntxiv yog tsim, cov xim dub nickel sib dhos. Cov khoom zoo ib yam li cov pa nickel plating; nrog rau qhov tshwj xeeb uas cov txheej no yog siv rau hauv cov ntawv thov uas yuav tsum tau ua kom pom qhov pom ntawm cov khoom tsis ci.
Kub: Hom txheej txheej no feem ntau siv rau hauv kev kho mob thiab tseem tsim nyog siv rau hauv kev sib cuag nrog tib neeg lub cev. Muaj kev pom zoo los ntawm FDA (Food and Drug Administration). Hauv qab txheej kub, muaj ib txheej txheej ntawm Ni-Cu-Ni. Qhov siab tshaj plaws ua hauj lwm kub kuj yog txog 200 ° C. Ntxiv rau qhov chaw ntawm cov tshuaj, kub plating kuj yog siv rau cov hniav nyiaj hniav kub thiab cov hniav nyiaj hniav kub.
Zinc: Yog tias qhov kub ua haujlwm siab tshaj plaws yog tsawg dua 120 ° C, cov txheej txheej no tsim nyog. Cov nqi qis dua thiab cov hlau nplaum tiv thaiv corrosion hauv huab cua qhib. Nws tuaj yeem ua rau cov hlau, txawm tias yuav tsum tau siv cov nplaum tshwj xeeb. Lub zinc txheej yog tsim los muab cov kev tiv thaiv kev tiv thaiv rau cov hlau nplaum uas tsis tshua muaj kev ua haujlwm kub thiab tsis muaj zog.
Parylene: Cov txheej no kuj tau pom zoo los ntawm FDA. Yog li ntawd, lawv tau siv rau kev siv kho mob hauv tib neeg lub cev. Qhov siab tshaj plaws ua haujlwm kub yog kwv yees li 150 ° C. Cov qauv molecular muaj lub nplhaib-zoo li hydrocarbon tebchaw uas muaj H, Cl, thiab F. Nyob ntawm cov qauv molecular, ntau hom yog txawv li Parylene N, Parylene C, Parylene D, thiab Parylene HT.
Epoxy: Ib txheej uas muab kev tiv thaiv zoo tiv thaiv ntsev thiab dej. Nws muaj qhov adhesion zoo heev rau cov hlau, yog tias cov hlau nplaum nplaum nrog cov nplaum tshwj xeeb haum rau cov hlau nplaum. Qhov siab tshaj plaws ua haujlwm kub yog kwv yees li 150 ° C. Cov epoxy txheej feem ntau yog xim dub, tab sis lawv tuaj yeem ua dawb. Cov ntawv thov tuaj yeem pom nyob rau hauv maritime sector, cav, sensors, neeg siv khoom, thiab automotive sector.
Cov hlau nplaum txhaj rau hauv cov yas: tseem hu ua over-molded. Nws cov yam ntxwv tseem ceeb yog nws cov kev tiv thaiv zoo heev ntawm cov hlau nplaum tiv thaiv kev tawg, cuam tshuam, thiab corrosion. Cov txheej tiv thaiv muab kev tiv thaiv dej thiab ntsev. Qhov siab tshaj plaws ua haujlwm kub nyob ntawm cov yas siv (acrylonitrile-butadiene-styrene).
Tsim PTFE (Teflon): Zoo li cov tshuaj txhaj / yas txheej kuj muab kev tiv thaiv zoo heev ntawm cov hlau nplaum tiv thaiv kev tawg, cuam tshuam, thiab corrosion. Cov hlau nplaum tiv thaiv cov dej noo, dej, thiab ntsev. Qhov siab tshaj plaws ua haujlwm kub yog nyob ib ncig ntawm 250 ° C. Cov txheej no yog siv rau hauv kev lag luam kho mob thiab hauv kev lag luam khoom noj.
Roj hmab: Cov roj hmab txheej tiv thaiv zoo kawg nkaus los ntawm kev tawg thiab cuam tshuam thiab txo qis corrosion. Cov khoom siv roj hmab ua tau zoo heev hauv kev ua haujlwm ntawm cov hlau. Qhov siab tshaj plaws ua haujlwm kub yog nyob ib ncig ntawm 80-100 ° C. Lub lauj kaub hlau nplaum nrog cov roj hmab txheej yog cov khoom siv pom tseeb tshaj plaws thiab dav siv.
Peb muab peb cov neeg siv khoom nrog cov lus qhia thiab kev daws teeb meem ntawm kev tiv thaiv lawv cov hlau nplaum thiab tau txais daim ntawv thov zoo tshaj plaws ntawm cov hlau nplaum.Tiv tauj pebthiab peb yuav zoo siab los teb koj cov lus nug.