Cast baƙin ƙarfe da ductile baƙin ƙarfe bawuloli ana amfani da ko'ina domin ya kwarara iko a daban-daban masana'antu, amma sun bambanta a kayan kaddarorin, yi, da kuma aikace-aikace. A ƙasa akwai cikakken kwatancen don taimaka muku fahimtar bambance-bambance kuma zaɓi bawul ɗin da ya dace da bukatunku.
1. Abun Haɗin Kai
1.1 Cast Iron Butterfly Valve:
- Iron simintin gyare-gyaren launin toka, ƙarfe na ƙarfe tare da babban abun ciki na carbon (2-4%).
- Saboda ƙananan tsarinsa, carbon yana wanzu a cikin nau'i na graphite flake. Wannan tsarin yana haifar da abu don karyewa tare da ɓangarorin graphite a ƙarƙashin damuwa, yana mai da shi gatse kuma ƙasa da sassauƙa.
- Yawanci ana amfani dashi a cikin ƙananan matsi da aikace-aikacen da ba mahimmanci ba.
1.2 Bawul ɗin Ƙarfin Butterfly Bawul:
- An yi shi daga baƙin ƙarfe na ductile (wanda kuma aka sani da nodular graphite cast iron ko ductile iron), yana ɗauke da ƙananan adadin magnesium ko cerium, wanda ke rarraba graphite a cikin siffar zobe (nodular). Wannan tsarin yana inganta ductility da taurin kayan sosai.
- Ƙarfi, mafi sassauƙa, da ƙarancin raunin karaya fiye da simintin ƙarfe.
2. Kayayyakin Injini
2.1 Ƙarfin Simintin Ruwa:
- Ƙarfi: Ƙarfin ƙarancin ƙarfi (yawanci 20,000-40,000 psi).
- Ductility: Brittle, mai saurin gajiya ga fashewa a ƙarƙashin damuwa ko tasiri.
- Resistance Tasiri: Ƙananan, mai saurin karyewa a ƙarƙashin nauyin kwatsam ko girgizar zafi.
- Resistance Lalacewa: Matsakaici, dangane da yanayi da shafi.
2.2 Ƙarfin Ƙarfi:
- Ƙarfi: Zane-zane na zane-zane yana rage matakan damuwa, yana haifar da ƙarfin ƙarfin ƙarfi (yawanci 60,000-120,000 psi).
- Ductility: ƙarin ductile, ƙyale nakasawa ba tare da fatattaka ba.
- Resistance Tasiri: Kyakkyawan, mafi kyawun iya jurewa girgiza da girgiza.
- Juriya na lalata: Kama da simintin ƙarfe, amma ana iya inganta shi tare da sutura ko sutura.
3. Aiki da Dorewa
3.1 Cast Iron Butterfly Valves:
- Ya dace da aikace-aikacen ƙananan matsa lamba (misali, har zuwa 150-200 psi, dangane da ƙira).
- Babban wurin narkewa (har zuwa 1150 ° C) da kyakkyawan yanayin zafi (wanda ya dace da aikace-aikacen damping vibration, kamar tsarin birki).
- Rashin juriya ga matsananciyar ƙarfi, yana mai da su rashin dacewa da yanayin ɗaukar nauyi mai ƙarfi ko cyclic.
- Yawanci ya fi nauyi, wanda zai iya ƙara farashin shigarwa.
3.2 Bawul ɗin Bawul ɗin ƙarfe na Butterfly:
- Zai iya ɗaukar matsi mafi girma (misali, har zuwa 300 psi ko sama, dangane da ƙira).
- Saboda girman ƙarfinsa da sassauci, baƙin ƙarfe ba shi da yuwuwar karyewa a ƙarƙashin lanƙwasa ko tasiri, a maimakon haka ya zama nakasar filastik, yana daidai da ƙa'idar "tsari mai ƙarfi" na kimiyyar kayan zamani. Wannan ya sa ya fi dacewa da aikace-aikace masu buƙata.
- Mai ɗorewa a cikin mahalli tare da sauyin yanayi ko damuwa na inji.
4. Yanayin aikace-aikace
4.1 Cast Iron Butterfly Valves:
- Yawanci ana amfani dashi a cikin tsarin HVAC.
- Ana amfani da shi a cikin tsarin marasa mahimmanci inda farashi ke da fifiko. - Ya dace da ruwa mai ƙarancin ƙarfi kamar ruwa, iska, ko iskar gas mara lalacewa (chloride ion <200 ppm).
4.2 Bawuloli na Ƙarfin Butterfly:
- Ya dace da samar da ruwa da jiyya na ruwa tare da tsaka tsaki ko raunin acidic / alkaline (pH 4-10).
- Ya dace da aikace-aikacen masana'antu, gami da mai da iskar gas, sarrafa sinadarai, da tsarin ruwa mai ƙarfi.
- An yi amfani da shi a cikin tsarin da ke buƙatar dogaro mafi girma, kamar tsarin kariyar wuta ko bututu tare da matsi masu canzawa.
- Ya dace da ƙarin magudanan ruwa idan aka yi amfani da su tare da rufin da ya dace (misali, EPDM, PTFE).
5. Farashin
5.1 Bakin Karfe:
Saboda tsarin masana'anta mafi sauƙi da ƙananan farashin kayan, gabaɗaya ba shi da tsada. Ya dace da ayyukan tare da ƙarancin kasafin kuɗi da ƙarancin buƙatu masu buƙata. Yayin da simintin simintin gyare-gyare ba shi da tsada, raunin sa yana haifar da ƙarin maye gurbin da ƙara sharar gida.
5.2 Ƙarfin Ƙarfi:
Saboda tsarin haɗakarwa da aiki mafi girma, farashin ya fi girma. Don aikace-aikacen da ke buƙatar karko da ƙarfi, mafi girman farashi ya cancanta. Ƙarfin ƙarfe ya fi dacewa da muhalli saboda yawan sake amfani da shi (>95%).
6. Ma'auni da ƙayyadaddun bayanai
- Duka bawuloli suna bin ka'idoji kamar API 609, AWWA C504, ko ISO 5752, amma bawul ɗin ƙarfe na ductile yawanci sun cika buƙatun masana'antu don matsa lamba da dorewa.
- An fi amfani da bawul ɗin ƙarfe na ƙarfe a cikin aikace-aikacen da ke buƙatar bin ka'idodin masana'antu masu tsauri.
7. Lalata da Kulawa
- Dukansu kayan suna da saurin lalacewa a cikin yanayi mai tsauri, amma ƙarfin ƙarfin ƙarfe na ductile yana sa ya fi kyau idan aka haɗa shi da kayan kariya kamar su epoxy ko nickel.
- Bawul ɗin baƙin ƙarfe na iya buƙatar ƙarin kulawa akai-akai a wurare masu lalacewa ko matsananciyar damuwa.
8. Takaitaccen Tebur
| Siffar | Cast Iron Butterfly Valve | Ductile Iron Butterfly Valve |
| Kayan abu | Ƙarfe mai launin toka, mai karye | Iron nodular, ductile |
| Ƙarfin Ƙarfi | 20,000-40,000 psi | 60,000-120,000 psi |
| Halittu | Ƙananan, gaggautsa | Maɗaukaki, sassauƙa |
| Ƙimar Matsi | Ƙananan (150-200 psi) | Mafi girma (300 psi ko fiye) |
| Juriya Tasiri | Talakawa | Madalla |
| Aikace-aikace | HVAC, ruwa, tsarin marasa mahimmanci | Man / gas, sinadarai, kariya ta wuta |
| Farashin | Kasa | Mafi girma |
| Juriya na Lalata | Matsakaici (tare da sutura) | Matsakaici (mafi kyau tare da sutura) |
9. Yadda za a Zaba?
- Zaɓi bawul ɗin baƙin ƙarfe na malam buɗe ido idan:
- Kuna buƙatar bayani mai inganci don ƙarancin matsa lamba, aikace-aikacen da ba su da mahimmanci kamar samar da ruwa ko HVAC.
- Tsarin yana aiki a cikin kwanciyar hankali tare da danniya kadan ko girgiza.
- Zaɓi bawul ɗin ƙarfe na malam buɗe ido idan:
- Aikace-aikacen ya ƙunshi babban matsin lamba, nauyi mai ƙarfi, ko ruwa mai lalata.
- Dorewa, juriya mai tasiri, da dogaro na dogon lokaci sune fifiko.
- Aikace-aikacen yana buƙatar tsarin masana'antu ko mahimmanci kamar kariya ta wuta ko sarrafa sinadarai.
10. Shawarar ZFA valve
A matsayin masana'anta da ke da shekaru masu yawa na gwaninta a cikin bawul ɗin malam buɗe ido, ZFA Valve yana ba da shawarar baƙin ƙarfe ductile. Ba wai kawai yana aiki da kyau ba, amma ductile iron malam buɗe ido bawuloli kuma suna nuna nagartaccen kwanciyar hankali da daidaitawa a cikin hadaddun da canza yanayin aiki, yadda ya kamata rage mitar kulawa da farashin canji, wanda ke haifar da ingantaccen farashi na dogon lokaci. Saboda raguwar buƙatun ƙarfe na simintin simintin toka, ana cire bawul ɗin ƙarfe na malam buɗe ido sannu a hankali. Daga mahangar albarkatun ƙasa, ƙarancin yana ƙara zama mai daraja.