G01 Grundfos Mechanical Foob

Grundfos Mechanical Seal Hloov

Khoom siv:

● Seal Rings: Resin Carbon, Antimony Carbon, SIC, SSIC, Tungsten Carbide

● Elastomer: VITON, EPDM, NBR

● Hlau Tshooj: SS304, SS316

Assembly Dwg:

Qhov Loj (mm):

*Kev Taw Qhia Txog *

Lub luag haujlwm ntawm kev sib tsoo thiab polishing ntawm lub foob kev sib txhuam yog dab tsi?

Kev sib tsoo thiab polishing ua haujlwm yog hu rau saum npoo ntawm qhov chaw ua haujlwm nrog cov cuab yeej abrasive, ntxiv abrasive nruab nrab ntawm ob, thiab tshem tawm cov txheej txheej nyias nyias los ntawm qhov chaw ua haujlwm thaum lub sijhawm txav mus los, txhawm rau kom tau txais qhov siab-precision nto. Sib tsoo thiab polishing txhim kho lub koom haum ntawm kev ua haujlwm kawg ntawm lub nplhaib foob thiab muab qhov hnav-tiv taus rau lub foob. Nws txoj haujlwm yog:

① Txo cov kev sib txhuam coefficient,

② Lub zog saum npoo yog txhim kho zoo dua

③ Txhim kho corrosion kuj

④ Qhov saum npoo zoo nkauj, nws tuaj yeem txhim kho qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv, thiab nws yooj yim los siv cov khoom siv kho qhov muag kom pom qhov flatness.

fluorine roj hmab (FKM) kev ua tau zoo

1. Zoo aging kuj

fluorine roj hmab muaj huab cua zoo heev thiab ozone kuj. Raws li cov lus ceeb toom, kev ua tau zoo ntawm Vitona tsim los ntawm DuPont tseem yog qhov txaus siab tom qab kaum xyoo ntawm kev khaws cia, thiab tsis muaj qhov pom tseeb tawg tom qab 45 hnub ntawm kev ua haujlwm hauv huab cua nrog ozone concentration ntawm 0.01%. Hom 23 fluororubber muaj huab cua tiv thaiv zoo thiab ozone tsis kam.

Lub tshuab nqus tsev ua haujlwm zoo heev

26 hom fluorine roj hmab muaj lub tshuab nqus tsev zoo heev. Lub tshuab nqus tsev tawm ntawm cov roj hmab vulcanized ntawm cov qauv ntawm 246 fluorine roj hmab tsuas yog 37 × 10-6 Torr / sec. Cm 2. 246 fluoroelastomer tau ua tiav nyob rau hauv lub tshuab nqus tsev ntawm 10-9 Torr.

Zoo heev mechanical zog

Fluorine roj hmab muaj lub cev zoo thiab cov khoom siv kho tshuab. Hom 26 fluororubber feem ntau muaj qhov sib xyaw ua ke ntawm 10-20 MPa, tawg elongation ntawm 150-350%, thiab lub zog tawg ntawm 3-4KN / m. Lub zog ntawm Hom 23 fluororubber yog nyob nruab nrab ntawm 15.0 thiab 25MPa, qhov elongation yog nruab nrab ntawm 200% thiab 600%, thiab lub kua muag tsis kam yog nruab nrab ntawm 2 thiab 7MPa. Feem ntau, cov txheej txheem compression ntawm fluorine roj hmab ntawm qhov kub thiab txias yog qhov loj, tab sis yog tias muab piv rau tib lub sijhawm, xws li compression txheej tib lub sijhawm ntawm 150 ℃, ob qho tib si butyl thiab neoprene loj dua li hom 26 fluorine roj hmab. Lub compression deformation ntawm hom 26 fluororubber ntawm 200 ℃ × 24 teev yog sib npaug rau cov roj hmab butadiene ntawm 150 ℃ × 24 teev.

2. Kev ua tau zoo ntawm hluav taws xob

23-hom fluororubber muaj cov khoom siv hluav taws xob zoo dua thiab kev nqus dej tsawg dua li lwm cov elastomers, yog li nws tuaj yeem siv los ua cov khoom siv hluav taws xob zoo dua. Hom 26 roj hmab tuaj yeem siv nyob rau hauv qis zaus thiab tsis tshua muaj siab.

3. Tsawg cua permeability

fluorine roj hmab muaj ib tug loj solubility rau roj, tab sis nws diffusion tus nqi kuj me me, yog li tag nrho cov huab cua permeability kuj me me. Raws li cov lus ceeb toom, kev nkag mus ntawm 26-hom fluororubber rau oxygen, nitrogen, helium, thiab carbon dioxide gas ntawm 30 ° C yog sib npaug ntawm cov roj hmab butyl thiab butadiene roj hmab, thiab zoo dua li neoprene thiab roj hmab ntuj.

4. Kev ua haujlwm kub tsis zoo

Kev ua haujlwm kub ntawm cov roj fluorine tsis zoo, uas yog vim nws cov qauv tshuaj, xws li 23-11 hom Tg> 0 ℃. Qhov tseeb qhov kub thiab txias ua haujlwm ntawm fluorine roj hmab feem ntau yog qhia los ntawm qhov kub thiab txias compression coefficient. Cov mis ntawm cov roj hmab sib xyaw thiab cov duab ntawm cov khoom (xws li tuab) muaj qhov cuam tshuam loj ntawm qhov kub hnyiab. Yog tias cov tshuaj muab tshuaj hauv cov mis ntau ntxiv, qhov kub hnyiab yuav ua rau tsis zoo, thiab cov tuab ntawm cov khoom yuav nce ntxiv, thiab qib ntawm nkig nkig kuj tseem yuav ua rau tsis zoo.

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