Qhov zoo tshaj plaws O-Nplhaib Khoom siv rau kev siv roj
Xaiv txoj cai O-ntiv nplhaib cov khoom siv rau cov ntawv thov roj yog qhov tseem ceeb rau kev tiv thaiv kev xau, ncua kev pab cuam lub neej, thiab ua kom muaj kev ntseeg siab. Cov roj sib txawv xav tau cov khoom sib txawv O-rings raws li lawv cov tshuaj muaj pes tsawg leeg, kev khiav hauj lwm kub, thiab siab.
Teb ceev: Cov ntaub ntawv zoo tshaj plaws rau roj
Qhov zoo tshaj plaws tag nrho:NBR (Nitrile Roj Hmab) - Cov roj ua haujlwm zoo heev, tus nqi - zoo, feem ntau siv
Kub kub:FKM (Viton) - Ua kom sov thiab tshuaj tiv thaiv
Cov xwm txheej heev:HNBR (Hydrogenated Nitrile) - Ua kom kub thiab roj tsis kam
Daim duab piv khoom siv
| Khoom siv | Roj kuj | Qhov kub thiab txias | Nqi | Zoo tshaj rau |
|---|---|---|---|---|
| NBR (Nitrile) | Zoo heev | -40℃rau +120 degree | $ | Hydraulic roj, roj av roj, ntxhia roj |
| FKM (Viton) | Zoo heev | -20℃rau +230 degree | $$$ | High temp roj, hluavtaws roj, roj |
| HNBR | Zoo heev | -40℃rau +150 degree | $$ | Cov roj cav, roj kub, biodiesel |
| EPDM | pluag | -50℃rau +150 degree | $ | ❌ Tsis pom zoo rau roj |
| Silicone | pluag | -60℃rau +230 degree | $$ | ❌ Tsis pom zoo rau roj |
1. NBR (Nitrile Rubber) - Kev Lag Luam Txuj
Vim li cas NBR rau Roj?
- Roj kuj zoo heevrau roj av- raws li cov roj
- Tus nqi- zoorau feem ntau daim ntawv thov
- Zoo mechanical zogthiab durability
- Muaj davnyob rau hauv qhov ntau thiab tsawg
Cov ntawv thov siv
- Hydraulic systems
- Cav roj foob
- Roj tshuab
- Gearboxes thiab kis tau tus mob
NBR Performance Ratings:
- Mineral roj: Zoo heev
- Hydraulic roj: Zoo heev
- Petroleum roj: Zoo heev
- Diesel roj: Zoo heev
- Synthetic roj: Zoo (nyob ntawm hom)
- Cov roj zaub: Tsis zoo (siv EPDM hloov)
💡 Cov Lus Qhia Pro:NBR los ntawm ntau qib raws li acrylonitrile (ACN) cov ntsiab lus:
- Tsawg ACN (18-25%):Zoo dua txias tsis kam, txo roj tsis kam
- Medium ACN (30-35%):Kev ua tau zoo sib npaug, feem ntau
- ACN siab (40-50%):Qhov zoo tshaj plaws roj tsis kam, tsis hloov pauv
Rau feem ntau cov ntawv thov roj, nruab nrab ACN NBR muab qhov sib npaug zoo tshaj plaws.
2. FKM (Viton) - Rau Cov Roj Kub Kub & Cov Roj Hnyav
Thaum xaiv FKM:
- Kub kub:Ua haujlwm siab tshaj 120 degree
- Synthetic roj:Silicone roj, ester-raws li roj
- Roj:Roj av, diesel, biodiesel
- Chemical exposure:Roj nrog additives los yog kab mob
- Lub neej ua haujlwm ntev:Daim ntawv thov tseem ceeb yuav tsum tau ncua ntev
FKM Qhov Zoo:
- Superior tshav kub tsis kam mus txog 230 degree
- Zoo heev tiv taus cov roj hluavtaws thiab roj
- Cov tshuaj tiv thaiv zoo heev
- Tsawg compression teeb (tseem tuav lub sijhawm ntev)
- Zoo heev aging kuj
FKM txwv:
- ❌ Tus nqi siab (3-5x kim dua NBR)
- ❌ Tsawg qis - qhov kub thiab txias (tsis qis dua -20 degree)
- ❌ Tsis haum rau chav dej lossis dej kub
- ❌ Yuav tsum tau ceev faj thaum lub sijhawm teeb tsa
3. HNBR - Kev Hloov Kho Kom Zoo
HNBR (Hydrogenated Nitrile Butadiene Roj Hmab) yog qhov tseem ceeb ntawm kev hloov kho tshiab ntawm NBR nrog kev txhim kho cov khoom los ntawm hydrogenation.
HNBR Cov txiaj ntsig tseem ceeb:
- Ua kom sov zoo duatshaj NBR (txog 150℃txuas ntxiv)
- Superior ozone thiab aging kuj
- Lub zog tensile zoo heevthiab tsim kua muag
- Zoo qis -kub yooj yim
- Resistant rau cav roj nrog additives
Cov ntawv thov zoo rau HNBR:
- Automotive engine seals (turbochargers, kis tau tus mob)
- Cov khoom siv roj av
- Biodiesel thiab lwm yam roj systems
- Kev siv roj kub (100-150 degree)
- High -kev ua haujlwm hydraulics
Xaiv Phau Ntawv Qhia los ntawm Roj Hom
| Roj Hom | 1st Xaiv | Lwm txoj | Zam |
|---|---|---|---|
| Mineral Roj | NBR | HNBR (yog tias kub) | EPDM, silicone |
| Hydraulic Roj | NBR | FKM (siab kub) | EPDM |
| Cav Roj | HNBR | FKM, NBR | EPDM, silicone |
| Kis kua | HNBR | FKM | EPDM |
| Synthetic Roj (Ester) | FKM | HNBR | NBR, EPDM |
| Biodiesel | HNBR | FKM | NBR, EPDM |
| Roj av / Diesel | FKM | NBR | EPDM, silicone |
| Iav Roj | NBR | HNBR | EPDM |
Xaiv Kev Txiav Txim Ntoo
Kauj ruam 1: Koj qhov kev khiav hauj lwm kub yog dab tsi?
- Hauv qab 120℃→ Xav txog NBR
- 120-150℃→ Xav txog HNBR
- Tshaj 150℃→ Siv FKM
Kauj Ruam 2: Hom roj twg?
- Petroleum/mineral oil → NBR yog qhov zoo tagnrho
- Synthetic roj / roj → FKM zoo dua
- Cav roj nrog additives → HNBR pom zoo
Kauj ruam 3: Koj pob nyiaj siv yog dab tsi?
- Tus nqi -effective → NBR
- Cov peev nyiaj nruab nrab → HNBR
- Hwm / tseem ceeb → FKM
Kauj Ruam 4: Kev pab cuam lub neej expectancy?
- Txheem (1-3 xyoos) → NBR
- Txuas ntxiv (3-5 xyoos) → HNBR
- Ntau tshaj ({0}} xyoo) → FKM
Feem ntau yuam kev kom zam
❌ Tsis txhob siv EPDM lossis Silicone rau roj
Cov ntaub ntawv no o ntau dhau hauv cov roj thiab yuav ua tsis tau sai. Lawv zoo heev rau dej, chav, thiab huab cua tsis kam, tab sis muaj cov roj tsis zoo sib xws.
❌ Tsis txhob siv NBR rau siab -Tub kub hluavtaws roj
NBR yuav degrade sai dua 120℃lossis hauv cov roj hluavtaws ester. Hloov mus rau HNBR lossis FKM rau cov ntawv thov no.
❌ Tsis txhob hla qhov zoo rau cov ntawv thov tseem ceeb
Hauv cov txheej txheem tseem ceeb (aerospace, kho mob, khoom siv kev nyab xeeb), tus nqi sib txawv ntawm NBR thiab FKM yog qhov tsis txaus ntseeg piv rau cov nqi tsis ua haujlwm.
❌ Tsis txhob tsis quav ntsej Hardness xaiv
Hardness (Shore A) cuam tshuam kev sib khi. Cov mos mos heev yuav extrude nyob rau hauv siab, nyuaj heev yuav tsis muab kaw kom zoo. Feem ntau: 70-90 Ntug A rau kev siv roj.
Installation Tips rau Roj Foob
- Siv cov roj nplua nyeem kom zoo:Siv ib txheej nyias ntawm cov roj uas raug kaw thaum lub sijhawm teeb tsa
- Tsis txhob petroleum jelly:Nws tuaj yeem ua rau o ntawm qee cov roj hmab sib txuas
- Txheeb xyuas qhov groove design:Qhov loj ntawm qhov zawj yog qhov tseem ceeb rau O-ring kev ua tau zoo
- Tshawb xyuas kev puas tsuaj:Tsis txhob nruab ib lub nicked, txiav, los yog twisted O-ring
- Ntxuav qhov chaw:Tshem tawm cov av, burrs, thiab qub seal remnants
- Tsis txhob ncab:Tsis txhob dhau -txo lub O-ntiv nplhaib thaum nruab (max 5-6%)
Cov ntsiab lus
Siv ceev ceev:
- Rau feem ntau cov kev siv roj:Xaiv NBR (Nitrile) - pov thawj, nqi-zoo, dav muaj
- For high temperatures (>120 degree):Xaiv FKM (Viton) - superior kub thiab tshuaj tiv thaiv
- Rau kev ua tau zoo dua:Xaiv HNBR - zoo dua NBR, pheej yig dua FKM
- Tsis txhob siv:EPDM lossis Silicone rau roj av
Txoj cai O- xaiv cov khoom siv ntiv nplhaib kom ntseeg tau tias kev sib khi ruaj khov, tiv thaiv kev ua haujlwm tsis zoo, thiab ua kom cov khoom siv sijhawm ntev tshaj plaws. Thaum muaj kev tsis ntseeg, sab laj nrog tus kws kho mob tshwj xeeb lossis kuaj cov qauv hauv koj cov kev thov tshwj xeeb.
Ntsiab lus:O- nplhaib rau roj, NBR O- nplhaib, Viton O- nplhaib, roj foob khoom, hydraulic foob, roj- roj hmab tiv taus, FKM O- nplhaib, HNBR O- nplhaib
Hloov tshiab kawg: Lub Ib Hlis 2026
