Chomangira valavu pachipata, kulongedza ndi kusankha gasket zinthu zomangira zomangira

Getivalavuchomangira, kulongedza ndi gasket zinthu kusankha chomangira ndondomeko kupanga

Zopangira zomangira ma valve pachipata, zida zonyamulira, zida za gasket ndi kusankha, zomangira makamaka zimaphatikizapo mabawuti, mabawuti amitu yambiri ndi mtedza. Zomangamanga zimanyamula mphamvu m'mavavu a zipata, zomwe ndizofunikira kwambiri kupewa kutaya kwa media. Choncho, zipangizo zosankhidwa ziyenera kuonetsetsa mphamvu zokwanira ndi kuphulika kwa fracture pa kutentha kwa ntchito.
1. Zopangira zomangira
Zomangira makamaka zimaphatikizapo mabawuti, mabawuti amitu yambiri ndi mtedza. Zomangamanga zimanyamula mphamvu m'mavavu a zipata, zomwe ndizofunikira kwambiri kupewa kutaya kwa media. Choncho, zipangizo zosankhidwa ziyenera kuonetsetsa mphamvu zokwanira ndi kuphulika kwa fracture pa kutentha kwa ntchito.
Posankha zipangizo zomangira molingana ndi kuthamanga kwapakati ndi kutentha, zikhoza kusankhidwa malinga ndi Table 5-1.
Mwadzina m'mimba mwake Pg(Mpa) sing'anga kutentha (℃) 300350400425450530 bawuti

Njira yothandizira kutentha imafunika pamene zipangizo za carbon steel zimagwiritsidwa ntchito. Magawo omangitsa ali ndi miyezo yapadera yokana dzimbiri, Cr17Ni2, 2Cr13, 1Cr18Ni9 ndi zitsulo zina zosapanga dzimbiri zosapanga dzimbiri zitha kusankhidwa.
Awiri, filler zopangira
Pa thupi la valavu, kulongedzako kumagwiritsidwa ntchito kudzaza malo amkati a chipinda chonyamula ma valve othamanga kuti asatayike kudzera pampando wa valve ndi chipinda chimodzi chodzaza chipinda chamkati.
1. Kufunika kwa fillers
1) Kukana bwino kwa dzimbiri, kulongedza ndi kukhudzana kwapakatikati, kuyenera kukana dzimbiri zapakati.
2) Kapangidwe kakang'ono, kulongedza sikumatha chifukwa cha kutentha kwapakati komanso kogwira ntchito.
3) Kukana kwamphamvu kwapang'onopang'ono kuti muchepetse kugundana pakati pa mpando ndi kulongedza.
2, mtundu wa kulongedza
Kulongedza kutha kugawidwa muzonyamula pulasitiki zofewa ndi kulongedza molimba mitundu iwiri:
1) Zofewa zapulasitiki zofewa: zimapangidwa ndi zinthu zobzala zobiriwira, zomwe ndi, bafuta, thonje, bafuta, ndi zina zambiri, kapena ndi mchere, womwe ndi thonje lagalasi, kapena thonje lagalasi lokhala ndi waya wachitsulo ndi chingwe chakunja cha graphite choluka, ndikulowa muzopanga zodzaza, ndi mwayi watsopano wa zida zosinthika za graphite filler m'zaka zaposachedwa. Zomera zobiriwira zonyamula katundu ndizotsika mtengo, zomwe zimagwiritsidwa ntchito kwambiri pama valve otsika mkati mwa 100 ℃; Maminolo kulongedza ndi oyenera 450-500 ℃ valavu pachipata. M'zaka zaposachedwa, kupanga pulasitiki O-ring ngati filler kumatchuka pang'onopang'ono, koma kutentha kwapakati nthawi zambiri kumayendetsedwa mkati mwa 60 ℃. Kulongedza mu kutentha kwakukulu ndi valavu yothamanga kwambiri kumapangidwanso ndi asbestosi woyera ndi flake graphite ufa.
2) Kulongedza molimba: kulongedza zopangidwa ndi zitsulo kapena zitsulo zosakanikirana ndi asibesitosi, chiyero chachikulu cha graphite ndi polytetrafluoroethylene kukanikiza kuwerengera ndikupanga kulongedza, ntchito yonyamula zitsulo ndizochepa.
3, kusankha stuffing
Kusankhidwa kwa filler kuyenera kutengera sing'anga, kutentha ndi kukakamizidwa kuti musankhe, zida zodziwika bwino zili ndi mfundo izi:
1) Mafuta ku nsalu ya asibesitosi, akhoza kusankhidwa malinga ndi Table 5-2.
2) Nsalu ya pulasitiki ya asbestosi: ikhoza kusankhidwa malinga ndi Table 5-3.
3) High chiyero graphite asibesito nsalu: asibesitosi nsalu TACHIMATA mu flake graphite, kutentha angagwiritsidwe ntchito pamwamba 450 ℃, kuthamanga ntchito akhoza kufika 16Mpa, ambiri oyenera nthunzi mkulu kuthamanga. Posachedwapa komanso pang'onopang'ono kugwiritsa ntchito kukakamiza wamkulu wa font filler, kuthamanga kwa lap, mawonekedwe ophatikizika.
4) polytetrafluoroethylene: Ichi ndi chodzaza chogwiritsidwa ntchito kwambiri panthawiyi. Makamaka pa sing'anga zikuwononga, koma kutentha sangakhoze kupitirira 200 ℃. Kawirikawiri, imapangidwa ndi galimoto yopondereza kapena yozungulira, monga momwe tawonetsera pa Chithunzi 5-1 pansipa.
Tchulani mawonekedwe achitsanzo
Kukula (kabowo kapena square circumference)
Kuthamanga kwa malire komwe kulipo kgf/cm
Kutentha komwe kulipo (℃)
Ntchito madzi nthunzi, gasi, mafuta mafuta Y5.6.8.10.13
16.19.22.25 N3.5.6.8.10.13
16.19.22.25YS350F, Y, N3.5.6.8.10.13
16.19.22.25.45350YS250F, Y, N3.5.6.8.10.13.
16.19.22.2545250
Zindikirani: Nambala yowonekera F ikuwonetsa masikweya, kupyola-pachimake kapena imodzi kuluka kawiri; Y limasonyeza kuti ndi wozungulira, ndi mandrel wokhota pakati ndi mmodzi kapena awiri zigawo za kuluka kunja; N amatanthauza kupindika.
Dzina lachitsanzo
Mafotokozedwe (chilinganizo chowongoka kapena circumference square)
Kuthamanga kwa malire komwe kulipo kgf/cm
Kutentha komwe kulipo (℃)
Mapulasitiki acholinga chachikulu
asibesitosi
Kulongedza XS4503.4.5.6.8.10.13.16.19.22.25.2860450 XS35045350XS25045250 ku nthunzi, zinthu zamafuta
Screw mtundu: mutu makina akusisita makina; Padzakhala makina awiri okhomerera nkhonya, makina awiri opha nkhonya, atatu amafa makina atatu a nkhonya, anayi amafa makina anayi a nkhonya, asanu amafa makina asanu, asanu amafa makina asanu ndi limodzi, ndi mtundu uliwonse malinga ndi kukula kwa mndandanda. , monga kufa awiri nkhonya mu: 0# makina, miniti makina, 2 kutambasuka, awiri ndi theka makina, atatu kuwonjezera izi...
Zida zazikulu zopangira zomangira:
1, wononga kalasi: mutu makina akusisita makina; Padzakhala makina awiri okhomerera, awiri amafa anayi, atatu amafa makina atatu, anayi amafa anayi, asanu amafa asanu, asanu amafa asanu, asanu ndi mmodzi amafa makina asanu ndi limodzi, ndipo iliyonse imagawidwa motsatira motsatira kukula, monga kufa awiri kukhomerera mu: 0# makina, miniti makina, 2 kutambasuka, awiri ndi theka makina, atatu kutambasuka;
2, mtedza: mtedza ozizira extrusion kupanga makina basi pogogoda makina;
3. Mtundu wa gasket: nkhonya yothamanga kwambiri;
4, mano: waya kugudubuza makina;
5, pini kalasi: CNC lathe CNC lathe CNC makina akupera;
6, kutembenukira mbali: CNC akupera makina; Processing center;
Malinga ndi ukadaulo waukadaulo, zomangira zitha kugawidwa m'mapangidwe otentha komanso ozizira, ndiye kuti pier yotentha ndi pier yozizira (extrusion processing).
Malinga ndi kuyesera kozizira (kuzizira pamwamba) kumayesedwa kuti:
Nthawi zambiri, zida zopangira zida zakunja za hexagon ziyenera kuwonetsetsa kuti kupanikizika ndi 1/20 (l [kutalika kwachitsanzo] mayeso · gululi, ndi mtedza wozizira kwambiri, zomangira zozizira za hexagon ndi mabawuti aku France, tiyenera kutero. onetsetsani kuti mayeso opotoka 11311 afika pamlingo.
Kufotokozera za zipangizo zozizira ndi kutentha kukhumudwitsa ndondomeko
Kuuma kwa zinthu wamba wa pier ozizira kumakhala kotsika pang'ono, ndipo pulasitiki ndi yabwinoko, yomwe imathandizira kupindika kwa pulasitiki pamene pier yozizira imapangidwa ndikukonzedwa ndikukulungidwa. Chitsulo chochepa cha carbon kapena chitetezo chochepa cha carbon carbon, sing'anga carbon carbon steel chiyenera kutsekedwa, kuzimitsa kuuma Mapangidwe a mpweya wotayika ndi oxide wosanjikiza ayenera kupewedwa panthawi yozimitsa.
Mawonekedwe azinthu zopangira muyeso wamutu wotentha ndizabwinoko. Kutentha kutentha sangakhoze kuoneka coarse kristalo chikhalidwe, apo ayi makutidwe ndi okosijeni wosanjikiza mwachindunji maonekedwe a mankhwala khalidwe.
Kupanga zomangira ndi kukonza masitepe: disk element - quenching - pickling passivation - kujambula waya - mutu - kugudubuza mano - njira yochizira kutentha - njira yopangira electroplating - kuyika kwakunja Iyi ndi njira yophatikizira bawuti.
Disk unit: imatanthawuza chingwe chomwe mudagulanso
Kuzimitsa: Kumawonjezera kuuma kwa chingwe. (Mchitidwewu ndi wovuta kwambiri, ndipo tsopano ukugwiritsidwa ntchito mung'anjo yotentha yotentha kwambiri)
Pickling passivation: ndi kutsuka dzimbiri, zotsalira pamwamba pa chingwe
Koka waya: Koka waya pabowo lomwe umafunika kupanga bawuti
Mutu: Mutu wa bawuti ndi extruded ndi ozizira extrusion kupanga. (Ngati ili kuposa ma bolts a M20, iyenera kukhala yofiira, ndiko kuti, muyenera kutentha ndikugunda mutu, koma mtundu wa bolt pamwamba si wokongola kwambiri, chifukwa cha oxide layer)
Kugwetsa mano: Kutanthauza malo otalikirana ndi mano ofunikira
Njira yochizira kutentha: Njira iyi ndiyofunikira kwambiri kuti mumveketse magwiridwe antchito a bawuti
Electroplating process: Pamwamba pa chitsulocho amathandizidwa ndi mtundu womwe mukufuna