Dab tsi yog cov khoom siv sib khi rau cov li qub?

Muaj ntau hom li qub, tab sis qhov kev ua haujlwm yooj yim yog tib yam, uas yog, txuas lossis txiav tawm qhov nruab nrab ntws. Yog li ntawd, qhov teeb meem sealing ntawm lub valve yog qhov tseem ceeb heev.

Txhawm rau kom ntseeg tau tias lub valve tuaj yeem txiav tawm qhov nruab nrab ntws zoo yam tsis muaj qhov xau, nws yog qhov yuav tsum tau ua kom ntseeg tau tias lub foob valve tsis zoo. Muaj ntau ntau yam vim li cas rau lub valve tawm, nrog rau cov qauv tsim tsis tsim nyog, kev sib txuas tsis zoo ntawm qhov chaw, xoob fastening qhov chaw, xoob haum ntawm lub cev lub cev thiab lub kaus mom, thiab lwm yam. Tag nrho cov teeb meem no yuav ua rau tsis zoo ntawm lub valve. Zoo, yog li tsim qhov teeb meem xau. Yog li ntawd, valve sealing tshuab yog ib qho tseem ceeb thev naus laus zis ntsig txog valve kev ua tau zoo thiab kev ua haujlwm zoo, thiab yuav tsum muaj kev tshawb fawb zoo thiab tob.

Feem ntau siv cov khoom sib khi rau cov li qub feem ntau suav nrog cov hauv qab no:

1. NBR

Cov roj ua haujlwm zoo heev, hnav tsis kam, zoo kub ua haujlwm, muaj zog adhesion. Nws qhov tsis zoo yog qhov tsis zoo ntawm qhov kub thiab txias, tsis zoo ozone tsis kam, tsis zoo hluav taws xob, thiab qis elasticity me ntsis.

2. EPDM

Qhov tseem ceeb tshaj plaws ntawm EPDM yog nws cov oxidation zoo dua, ozone kuj thiab corrosion kuj. Txij li thaum EPDM belongs rau tsev neeg polyolefin, nws muaj cov yam ntxwv zoo vulcanization.

3. PTFE

PTFE muaj cov tshuaj lom neeg muaj zog, tsis kam ua rau cov roj thiab cov kuab tshuaj feem ntau (tshwj tsis yog ketones thiab esters), huab cua tsis zoo thiab ozone tsis kam, tab sis tsis zoo txias.

4. Cam khwb cia hlau

Lus Cim: Cam khwb cia hlau yog siv rau dej, roj thiab roj xov xwm nrog qhov kub thiab txias≤100°C thiab nominal siab ntawm≤1.6mpa ua.

5. Nickel-raws li alloy

Lus Cim: Nickel-based alloys yog siv rau cov kav dej nrog qhov kub ntawm -70 ~ 150°C thiab engineering siab PN≤20.5mpa ua.

6. tooj liab alloy

Copper alloy muaj qhov hnav tsis zoo thiab haum rau cov kav dej thiab cov kav dej nrog qhov kub thiab txias≤200℃thiab nominal siab PN≤1.6mpa ua.