Kodi mavavu osindikizira pamwamba ndi chiyani?

Kusindikiza pamwamba pa valve nthawi zambiri kumakhala zowonongeka, zowonongeka ndi kuvala ndi sing'anga, choncho ndi gawo lomwe limawonongeka mosavuta pa valve.Monga valavu ya mpira wa pneumatic ndi valavu ya butterfly yamagetsi ndi ma valve ena odzipangira okha, chifukwa cha kutsegula ndi kutseka pafupipafupi komanso mofulumira, ubwino wawo ndi moyo wautumiki umakhudzidwa mwachindunji.Chofunikira chachikulu cha valavu yosindikizira pamwamba ndi chakuti valavu imatha kutsimikizira kusindikiza kotetezeka komanso kodalirika pansi pazimene zatchulidwa.Chifukwa chake, zinthu zapamtunda ziyenera kukhala ndi izi:

(1) Kuchita bwino kosindikiza, ndiko kuti, malo osindikizira akuyenera kuteteza kutayikira kwa sing'anga;

(2) Lili ndi mphamvu zina, malo osindikizira ayenera kupirira kupanikizika kwapadera kwa kusindikiza komwe kumapangidwa ndi kusiyana kwapakati;

(3) Kukana kwa dzimbiri, pansi pa ntchito yayitali yanthawi yayitali komanso kupsinjika, malo osindikizira ayenera kukhala ndi kukana kwamphamvu kwa dzimbiri komwe kumagwirizana ndi zomwe zimapangidwira;

(4) Kutha kukana zokopa, kusindikiza ma valve ndi zisindikizo zamphamvu, ndipo pali kukangana pakati pa kusindikiza panthawi yotsegula ndi kutseka;

(5) kukokoloka kukana, ndi kusindikiza pamwamba ayenera kukana kukokoloka kwa mkulu-liwiro TV ndi kugunda kwa particles olimba;

(6) Kukhazikika kwabwino kwamafuta, malo osindikizira ayenera kukhala ndi mphamvu zokwanira komanso kukana kwa okosijeni pa kutentha kwakukulu, ndipo ayenera kukhala ndi kukana kozizira kozizira pa kutentha kochepa;

(7) Kukonzekera kwabwino, kosavuta kupanga ndi kukonza, valavu imagwiritsidwa ntchito ngati chigawo chokhazikika, ndipo imatsimikiziridwa kuti ili ndi phindu lachuma.

Mikhalidwe yogwiritsira ntchito ndi kusankha mfundo zazitsulo zosindikizira za valve pamwamba.Zida zosindikizira pamwamba zimagawidwa m'magulu awiri: zitsulo ndi zopanda zitsulo.Zomwe zimagwiritsidwa ntchito pazinthu zomwe zimagwiritsidwa ntchito nthawi zambiri ndi izi:

(1) Mpira.Nthawi zambiri amagwiritsidwa ntchito posindikiza ma valve otsekera otsika, ma valve a diaphragm, ma valve agulugufe, ma valve owunika ndi ma valve ena.

(2) Pulasitiki.Mapulasitiki omwe amagwiritsidwa ntchito posindikiza pamwamba ndi nayiloni ndi PTFE, omwe ali ndi makhalidwe abwino okana dzimbiri komanso kugunda kwazing'ono.

(3) Bambo.Imadziwikanso kuti bearing alloy, imakhala ndi kukana kwa dzimbiri komanso kuthekera kothamanga.Ndi oyenera kusindikiza pamwamba pa valavu yotseka kwa ammonia ndi kuthamanga kwapansi ndi kutentha kwa -70-150 ℃.

(4) Chitsulo chamkuwa.Ili ndi kukana kwabwino kovala komanso kukana kutentha kwina.Ndi oyenera valavu globe, kuponyedwa chitsulo chipata valavu ndi valavu cheke, etc. Nthawi zambiri ntchito madzi ndi nthunzi ndi kuthamanga otsika ndi kutentha osati apamwamba kuposa 200 ℃.

(5) Chrome-nickel chitsulo chosapanga dzimbiri.Ili ndi kukana bwino kwa dzimbiri, kukana kukokoloka komanso kukana kutentha.Oyenera media monga nthunzi nitric acid.

(6) Chrome chitsulo chosapanga dzimbiri.Ili ndi kukana bwino kwa dzimbiri ndipo nthawi zambiri imagwiritsidwa ntchito m'mavavu okhala ndi kuthamanga kwambiri komanso kutentha kosapitilira 450 ℃ pamafuta, nthunzi yamadzi ndi media zina.

(7) Chitsulo chokwera kwambiri cha chromium.Ili ndi kukana bwino kwa dzimbiri ndi ntchito yowumitsa ntchito, ndipo ndiyoyenera kuthamanga kwambiri, kutentha kwamafuta, nthunzi ndi media zina.

(8) Chitsulo cha nitrided.Imakhala ndi kukana bwino kwa dzimbiri komanso kukana kukanda, ndipo nthawi zambiri imagwiritsidwa ntchito pamagetsi amagetsi otenthetsera zipata.Izi zitha kusankhidwanso pagawo la ma valve otsekedwa mwamphamvu.

(9) Carbide.Ili ndi zinthu zabwino zonse monga kukana dzimbiri, kukana kukokoloka komanso kukana kukanda, ndipo imakhala ndi moyo wautali wautumiki.Ndi chinthu choyenera chosindikizira.Zomwe zimagwiritsidwa ntchito kwambiri ndi tungsten drill alloy ndi drill base alloy surfacing electrode, etc., zimatha kupanga kuthamanga kwambiri, kopitilira muyeso kutentha kusindikiza pamwamba, koyenera mafuta, mafuta, gasi, haidrojeni ndi media zina.

(10) Utsi wowotcherera aloyi.Pali ma aloyi opangidwa ndi cobalt, ma aloyi opangidwa ndi faifi tambala, ndi ma aloyi opangidwa ndi chibwano, omwe ali ndi kukana kwa dzimbiri komanso kukana kuvala.

Pofuna kuonetsetsa kuti chitetezo ndi kudalirika kwa chisindikizo cha valve, zinthu zosankhidwa ziyenera kutsimikiziridwa molingana ndi momwe zimagwirira ntchito.Ngati sing'angayo ikuwononga kwambiri, posankha zipangizo, iyenera kukumana ndi zowonongeka poyamba, ndiyeno ikwaniritse zofunikira za katundu wina;Chisindikizo cha valavu yachipata chiyenera kumvetsera kukana kwabwino koyambitsa;Ma valve otetezeka, ma throttle valves ndi valve zowongolera zimaphwanyidwa mosavuta ndi sing'anga, ndipo zida zokhala ndi kukana kwa dzimbiri ziyenera kusankhidwa;Pamapangidwe opangidwa ndi mphete yosindikiza ndi thupi, zida zolimba kwambiri ziyenera kuonedwa ngati malo osindikizira;Mavavu ambiri okhala ndi kutentha pang'ono ndi kupanikizika ayenera kusankha mphira ndi pulasitiki yokhala ndi ntchito yabwino yosindikiza ngati yosindikiza;Posankha zinthu zosindikizira, ziyenera kukumbukiridwa kuti kuuma kwa pamwamba pa mpando wa valve kuyenera kukhala kwakukulu kuposa kusindikiza pamwamba pa disc valve.