Cast iron uye ductile iron butterfly mavharuvhu anoshandiswa zvakanyanya kuyerera kuyerera mumaindasitiri akasiyana siyana, asi anosiyana muzvinhu zvenyama, kuita, uye mashandisirwo. Pazasi pane kuenzanisa kwakadzama kuti ikubatsire kunzwisisa mutsauko uye sarudza vharafu inonyatso kuenderana nezvido zvako.
1. Maumbirwo Ezvinhu
1.1 Kanda Iron Butterfly Valve:
- Grey cast iron, iron alloy ine yakakwira kabhoni yemukati (2-4%).
-Nekuda kweiyo microstructure, kabhoni iripo muchimiro cheflake graphite. Chimiro ichi chinoita kuti zvinhu zvityoke zvichitevedza magirafu flakes pasi pekunetsekana, zvichiita kuti zviite brittle uye zvisingachinjiki.
- Inowanzoshandiswa mune yakaderera-kudzvinyirira uye isiri-yakakosha maapplication.
1.2 Ductile Iron Butterfly Valve:
- Yakagadzirwa kubva kune ductile iron (inozivikanwawo se nodular graphite cast iron kana ductile iron), ine zvidiki zvemagesium kana cerium, iyo inogovera iyo graphite mune spherical (nodular) chimiro. Ichi chimiro chinovandudza zvakanyanya ductility uye kuoma kwezvinhu.
- Yakasimba, inoshanduka-shanduka, uye isinganyanyi kutyora brittle pane simbi yakakandwa.
2. Mechanical Properties
2.1 Grey Cast Iron:
-Kusimba: Kuderera kwesimba simba (kazhinji 20,000–40,000 psi).
- Ductility: Brittle, inowanzoitika kuneta kuputika pasi pekushushikana kana kukanganisa.
-Impact Resistance: Yakaderera, inotarirwa kuputsika pasi pemitoro yakangoerekana yaitika kana kuvhunduka kwemafuta.
- Corrosion Resistance: Pakati nepakati, zvichienderana nenharaunda uye yekupfeka.
2.2 Ductile Iron:
- Simba: Spherical graphite inoderedza kushushikana kwepfungwa, zvichiita kuti iwedzere kusimba simba (kazhinji 60,000-120,000 psi).
- Ductility: Yakawedzera ductile, inobvumira deformation pasina kutsemuka.
-Impact Resistance: Yakanakisa, zvirinani kugona kumira kuvhunduka uye vibration.
- Corrosion Resistance: Zvakafanana nesimbi yekukandira, asi inogona kuvandudzwa nekapeti kana linings.
3. Kuita uye Kusimba
3.1 Kanda Iron Butterfly Mavhavhu:
- Inokodzera kushandiswa kwepasi-kudzvinyirira (semuenzaniso, kusvika ku150-200 psi, zvichienderana nekugadzirwa).
- Yakakwira kunyungudika (kusvika 1150 ° C) uye yakanakisa yekupisa conductivity (yakakodzera vibration damping application, senge mabhureki masisitimu).
-Kuramba kushomeka kune zvine simba zvinonetsa, zvichiita kuti dzisakodzere yakakwirira-vibration kana cyclic kurodha nharaunda.
- Kazhinji inorema, izvo zvinogona kuwedzera mari yekuisa.
3.2 Ductile Iron Butterfly Mavharuvhu:
- Inogona kubata kudzvinyirira kwakakwirira (semuenzaniso, kusvika ku300 psi kana kupfuura, zvichienderana nekugadzirwa).
- Nekuda kwesimba rayo repamusoro uye kuchinjika, simbi ye ductile kashoma kutsemuka pasi pekukotama kana kukanganisa, pachinzvimbo ichikanganisa purasitiki, ichienderana neiyo "kuoma dhizaini" musimboti wezvinhu zvemazuva ano zvesainzi. Izvi zvinoita kuti ive yakakodzera kune inoda maapplication.
- Yakanyanya kusimba munzvimbo dzine tembiricha yekuchinja kana kushushikana kwemagetsi.
4. Mamiriro Ekushandisa
4.1 Kanda Iron Butterfly Mavharuvhu:
- Inowanzo shandiswa muHVAC masisitimu.
- Inoshandiswa mune dzisiri-yakakosha masisitimu uko mutengo unonyanya kukosha. - Inokodzera kudzika-kudzvinyirira zvinwiwa zvakaita semvura, mhepo, kana isina-kuora magasi (chloride ion <200 ppm).
4.2 Ductile Iron Butterfly Mavharuvhu:
- Inokodzera kupihwa kwemvura uye kurapwa kwemvura yetsvina isina kwayakarerekera kana isina kusimba acidic / alkaline media (pH 4-10).
-Inokodzera maindasitiri ekushandisa, anosanganisira oiri negesi, makemikari kugadzirisa, uye yakakwirira-kumanikidza mvura masisitimu.
-Inoshandiswa mumasisitimu anoda kuvimbika kwakanyanya, senge masisitimu ekudzivirira moto kana mapaipi ane zvinochinja-chinja.
-Inokodzera mamwe emvura anoodza kana akashandiswa neakakodzera lining (semuenzaniso, EPDM, PTFE).
5. Mutengo
5.1 Simbi yekukanda:
Nekuda kwekuita kwayo kuri nyore kugadzira uye kuderera kwemitengo yezvinhu, kazhinji haina kudhura. Inokodzera mapurojekiti ane bhajeti shoma uye zvishoma zvinodikanwa zvinodiwa. Nepo simbi yakakandwa isingadhure, brittleness yayo inotungamira kune kazhinji kutsiva uye kuwedzera tsvina.
5.2 Ductile Iron:
Nekuda kweiyo alloying maitiro uye hukuru hwekuita, mutengo wakakwira. Kune maapplication anoda kusimba uye simba, mutengo wepamusoro unoruramiswa. Ductile iron inonyanya kushamwaridzana nemamiriro ekunze nekuda kwekukwirira kwayo zvakare (> 95%).
6. Mitemo uye Zvinyorwa
- Mavharuvhu ese ari maviri anoteerana nezviyero zvakaita seAPI 609, AWWA C504, kana ISO 5752, asi mavharuvhu esimbi ane ductile anowanzo kusangana nepamusoro indasitiri zvinodiwa pakumanikidza uye kusimba.
- Ductile iron mavharuvhu anonyanya kushandiswa muzvikumbiro zvinoda kutevedzwa neyakaomesesa indasitiri zviyero.
7. Corrosion uye Maintenance
-Zvinhu zvese zviri zviviri zvinogona kuita ngura munzvimbo dzakaoma, asi simba repamusoro resimbi reductile rinoita kuti riite zvirinani kana rasanganiswa nemachira ekudzivirira akadai se epoxy kana nickel coatings.
-Mavharuvhu esimbi anokanda angangoda kuchengetedzwa kwakawanda munzvimbo dzinoora kana zvakanyanya-kushushikana.
8. Tafura yepfupiso
| Feature | Kanda Iron Butterfly Valve | Ductile Iron Butterfly Valve |
| Material | Gray cast iron, brittle | Nodular iron, ductile |
| Tensile Simba | 20,000–40,000 psi | 60,000–120,000 psi |
| Ductility | Low, brittle | High, flexible |
| Pressure Rating | Yakaderera (150–200 psi) | Pamusoro (300 psi kana kupfuura) |
| Impact Resistance | Murombo | Excellent |
| Applications | HVAC, mvura, isiri-yakakosha masisitimu | Mafuta / gasi, makemikari, kudzivirira moto |
| Mutengo | Lower | Higher |
| Corrosion Resistance | Pakati nepakati (ine coatings) | Pakati nepakati (zviri nani nemajasi) |
9. Ungasarudza sei?
-Sarudza simbi yakakandwa butterfly valve kana:
- Unoda inodhura-inoshanda mhinduro kune yakaderera-kudzvanywa, isiri-yakakosha maapplication akadai sekupa mvura kana HVAC.
- Iyo sisitimu inoshanda munzvimbo yakagadzikana ine kushoma kushushikana kana vibration.
-Sarudza ductile iron butterfly valve kana:
-Kushandisa kunosanganisira kudzvinyirirwa kwakanyanya, mitoro ine simba, kana zvinoparadza zvinwiwa.
- Kugara kwenguva refu, kuramba kwemhedzisiro, uye kuvimbika kwenguva refu ndizvo zvinonyanya kukosha.
-Chikumbiro chinoda maindasitiri kana akakosha masisitimu akadai sekudzivirira moto kana kugadzirisa kemikari.
10. ZFA VALVE kurudziro
Semugadziri ane makore mazhinji eruzivo mumavharuvhu e butterfly, ZFA Valve inokurudzira ductile iron. Haisi kungoita zvakanaka chete, asi ductile iron butterfly valves inoratidzawo kugadzikana kunoshamisa uye kugadzikana mumamiriro ezvinhu akaoma uye kuchinja kwekushanda, zvinobudirira kuderedza kushandiswa kwekugadzirisa uye kutsiva mari, zvichiita kuti mari yakawanda ibudirire kwenguva refu. Nekuda kwekudzikira kwekuda kwe grey cast iron, mavharuvhu esimbi anokandwa ari kubviswa zvishoma nezvishoma. Kubva pakuona kwezvinhu, kushomeka kuri kuwedzera kukosha.