Zida zosindikizira ma valve ndi gawo lofunikira pakusindikiza ma valve.Kodi zida zosindikizira ma valve ndi chiyani?Tikudziwa kuti zida za mphete zosindikizira ma valve zimagawidwa m'magulu awiri: zitsulo ndi zopanda zitsulo.Zotsatirazi ndizofotokozera mwachidule za machitidwe ogwiritsira ntchito zipangizo zosiyanasiyana zosindikizira, komanso mitundu ya valve yomwe imagwiritsidwa ntchito kawirikawiri.
1. Labala yopangira
Zokwanira za mphira wopangira monga kukana kwamafuta, kukana kutentha ndi kukana kwa dzimbiri ndizabwino kuposa mphira wachilengedwe.Nthawi zambiri, kutentha kwa mphira wopangidwa ndi t≤150 ℃, ndipo kutentha kwa mphira wachilengedwe ndi t≤60 ℃.Rubber imagwiritsidwa ntchito kusindikiza ma valve padziko lonse lapansi,valavu yokhala pachipata cha rabarama valve a diaphragm,rvalavu ya butterfly yokhala ndi ubber, rubber wokhala pansi swing check valve (fufuzani ma valve), mavavu azitsina ndi mavavu ena okhala ndi mphamvu mwadzina PN≤1MPa.
2. Nayiloni
Nayiloni ili ndi mawonekedwe ang'onoang'ono akukangana komanso kukana bwino kwa dzimbiri.Nayiloni imagwiritsidwa ntchito kwambiri pamavavu a mpira ndi mavavu apadziko lonse lapansi okhala ndi kutentha t≤90 ℃ ndi kuthamanga mwadzina PN≤32MPa.
3. PTFE
PTFE imagwiritsidwa ntchito kwambiri pama valve a globe,ma valve pachipata, mavavu a mpira, etc. ndi kutentha t≤232 ℃ ndi kuthamanga mwadzina PN≤6.4MPa.
4. Chitsulo choponyera
Chitsulo chachitsulo chimagwiritsidwa ntchitovalve pachipata, valavu yapadziko lonse, valavu ya pulagi, ndi zina zotero chifukwa cha kutentha t≤100 ℃, kuthamanga mwadzina PN≤1.6MPa, gasi ndi mafuta.
5. Babbitt aloyi
Babbitt aloyi ntchito valavu ammonia padziko lonse kutentha t-70 ~ 150 ℃ ndi kuthamanga mwadzina PN≤2.5MPa.
6. Aloyi yamkuwa
Zomwe zimagwiritsidwa ntchito pazitsulo zamkuwa ndi 6-6-3 tin bronze ndi 58-2-2 mkuwa wa manganese.Copper alloy ali ndi kukana kwabwino kwa avale ndipo ndi oyenera madzi ndi nthunzi ndi kutentha t≤200 ℃ ndi kuthamanga mwadzina PN≤1.6MPa.Amagwiritsidwa ntchito nthawi zambirima valve pachipata, ma valve a globe,fufuzani ma valve, ma plug ma valve, etc.
7. Chrome chitsulo chosapanga dzimbiri
Makalasi omwe amagwiritsidwa ntchito kwambiri achitsulo chosapanga dzimbiri cha chromium ndi 2Cr13 ndi 3Cr13, omwe adazimitsidwa ndikupsya mtima, ndipo ali ndi kukana kwa dzimbiri.Nthawi zambiri amagwiritsidwa ntchito mu mavavu atolankhani monga madzi, nthunzi ndi mafuta amafuta ndi kutentha t≤450 ℃ ndi kuthamanga mwadzina PN≤32MPa.
8. Chromium-nickel-titaniyamu chitsulo chosapanga dzimbiri
Chitsulo chosapanga dzimbiri cha chromium-nickel-titanium ndi 1Cr18Ni9ti, chomwe chimakhala ndi kukana kwa dzimbiri, kukana kukokoloka komanso kukana kutentha.Ndi oyenera nthunzi, asidi nitric ndi zina TV kutentha t≤600 ℃ ndi kuthamanga mwadzina PN≤6.4MPa, ntchito valavu globe, valavu mpira, etc.
9. Chitsulo cha nitrided
Chitsulo chomwe chimagwiritsidwa ntchito kwambiri ndi 38CrMoAlA, chomwe chimakhala ndi kukana kwa dzimbiri komanso kukana kukanda pambuyo pa chithandizo cha carburizing.Amagwiritsidwa ntchito popanga valavu yamagetsi ndi kutentha t≤540 ℃ ndi kuthamanga mwadzina PN≤10MPa.
10. Boronizing
Boronizing imayendetsa mwachindunji malo osindikizira kuchokera ku thupi la valve kapena thupi la disc, kenako ndikuchita chithandizo cha boronizing pamwamba, malo osindikizira amakhala ndi kukana kwabwino.Amagwiritsidwa ntchito pamagetsi opangira magetsi.
Nthawi yotumiza: Jun-10-2022