Dulmarka Dhuumaha Birta Ductile
Tuubooyinka Birta Ductile waa tubooyinka ka samaysan birta ductile. Ductile iron waa bir shuban graphite oo spheroidized ah. Heerarka sare ee ku-tiirsanaanta birta ductile waxay ugu horreyntii sabab u tahay xooggeeda sare, adkeysigeeda, iyo saameynta iyo caabbinta daxalka. Tuubooyinka birta birta ah ayaa sida caadiga ah loo isticmaalaa qaybinta biyaha la cabbi karo iyo bamgareynta slurries, bullaacadaha iyo kiimikooyinka habraaca. Tuubooyinkan birta ah ayaa ah kuwo si toos ah u horumariya tubooyinka birta ee hore loo shubay kuwaas oo hadda ay ku dhawdahay in la beddelo. Heerarka sare ee isku halaynta ee tuubooyinka birta ductile waa sababta oo ah sifooyinka kala duwan ee sarreeya. Tuubooyinkan ayaa ah kuwa ugu badan ee la raadsado tubooyinka dhowr codsi.
Tilmaamaha Tuubooyinka Birta Ductile
| Magaca Alaabta | bir iskeed isku xidhan, Dhuumaha Birta Ductile oo leh Spigot & Socket, Dhuumaha Birta Cawlan |
| Tilmaamaha | ASTM A377 Ductile Iron, AASHTO M64 Tuubooyinka Qulqulka Birta |
| Heerka | ISO 2531, EN 545, EN598, GB13295, ASTM C151 |
| Heerka Fasalka | C20, C25, C30, C40, C64, C50, C100 & Fasalka K7, K9 & K12 |
| Dhererka | 1-12 mitir ama sida looga baahan yahay macaamilka |
| Cabbirrada | DN 80 mm ilaa DN 2000 mm |
| Habka Wadajirka | nooca T; Kala-goysyada makaanikada k nooca; Is-barbardhig |
| Dahaarka Dibadda | Casaan / Buluug Epoxy ama Bitumen Black, Zn & Zn-AI Coatings, Zinc bir ah (130 gm/m2 ama 200 gm/m2 ama 400 gm/m2 sida waafaqsan shuruudaha macaamilka) u hoggaansanaanta heerarka ISO, IS, BS EN ee ku habboon lakabka dhamaystirka ee Epoxy Coating / Black Bitumen ( dhumucdiisuna waxay tahay 70 micron) sida ku xusan shuruudaha macaamiisha. |
| Dahaarka Gudaha | Dahaarka Sibidhka ee OPC/SRC/BFSC/HAC dahaarka hoobiyeyaasha sibidhka sida looga baahan yahay sibidhka Portland ee caadiga ah iyo Sulfate Resisting Cement oo waafaqsan heerarka IS, ISO, BS EN. |
| Dahaarka | Ku buufin zinc bir ah oo leh Dahaarka Bituminous (Dibadda) Dahaarka Hoobiyaha Sibidhka (Gudaha). |
| Codsiga | Birta shubka ah ee tuubooyinka waxaa inta badan loo isticmaalaa wareejinta biyaha wasakhda ah, biyaha la cabbi karo iyo waraabka. |
Saddexda Darajo ee ugu Muhiimsan ee Beebka Birta La shubay
V-2 (fasalka 40) Birta Cawlan, V-3 (65-45-12) Birta Ductile, iyo V-4 (80-55-06) Birta Ductile. Waxay bixiyaan xoog cadaadis aad u fiican iyo awood sare u qaadida gariirka.
V-2 (fasalka 40) Birta cawlan, ASTM B48:
Fasalkani waxa uu leeyahay awood xajin sare oo ah 40,000 PSI oo leh awood cadaadis ah 150,000 PSI. Adaggeedu wuxuu u dhexeeyaa 187 - 269 BHN. V-2 waxay ku habboon tahay codsiyada xidhashada tooska ah waxayna leedahay xoogga ugu sarreeya, qallafsanaanta, caabbinta xidhashada iyo jawaabta daaweynta kulaylka ee birta cawlan ee aan dahsoon. Waxaa si weyn loogu isticmaalaa isticmaalka iyo codsiyada baadiyaha ee warshadaha hydraulics.
V-3 (65-45-12) Birta Ductile Iron, ASTM A536:
Darajadani waxa ay leedahay cudud xajin ah oo ah 65,000 PSI, waxa soo saara xoog dhan 45,000 PSI, oo leh 12% dheerayn. Adaggu wuxuu u dhexeeyaa 131-220 BHN. Qaab dhismeedkeeda wanaagsan ee ferritic-ga ayaa ka dhigaya V-3 mashiinka ugu fudud ee saddexda darajo ee birta taasoo ka dhigaysa mid ka mid ah machiniability sare ee lagu qiimeeyay darajooyinka kale ee birta; gaar ahaan lagu daro saamaynta ugu fiicnayd, daal, korantada korantada iyo sifooyinka magnetic. Ductile Iron, gaar ahaan tuubooyinka, ayaa ugu horreyn loo isticmaalaa biyaha iyo khadadka wasakhda. Birtan waxa kale oo laga helaa qaybaha baabuurta iyo codsiyada warshadaha.
V-4 (80-55-06) Birta Ductile Iron, ASTM A536:
Darajadani waxa ay leedahay cudud xajin ah oo ah 80,000 PSI, waxa soo saara xoogga 55,000 PSI iyo dhererka 6%. Waa xoogga ugu sarreeya ee saddexda darajo, sida loo shubay. Darajadan waxaa lagu daweyn karaa kulayl 100,000 PSI ah Waxay leedahay 10-15% qiimaynta machiniability hoose marka loo eego V-3 sababtoo ah qaabdhismeedkeeda luul. Inta badan waxaa la doortaa marka loo baahan yahay birta jirka ah.
Tuubooyinka DI ayaa ka wanaagsan tuubooyinka birta / PVC / HDPE
• Tuubooyinka DI waxay kaloo u badbaadiyaan kharashaadka hawlgalka siyaabo dhowr ah oo ay ka mid yihiin kharashyada bamgareynta, kharashyada tuubada, iyo waxyeelada suurtagalka ah ee ka timaadda dhismayaasha kale, taasoo keenta guul-darro iyo kharashka dayactirka guud ahaan.
Qiimaha meertada nolosha ee tuubooyinka DI waa mid ka mid ah faa'iidooyinkeeda ugu weyn. Maadaama ay sii jirto jiilal, ay tahay mid dhaqaale in lagu shaqeeyo, oo si fudud oo hufan loo rakibo loona shaqeeyo, kharashkeeda muddada dheer ama meertada nolosheeda ayaa si fudud uga hooseeya alaab kasta.
• Dhuunta birta lafteedu waa 100% walxo dib loo warshadayn karo.
• Way adag tahay in ay u adkeysato xaaladaha ugu daran, laga bilaabo codsiyada cadaadiska sare, ilaa culeyska dhulka iyo gaadiidka, xaaladaha ciidda aan deganayn.
• Rakibaadda waa u fududahay oo badbaado u ah shaqaalaha gooyn kara oo taabsan kara Dhuumaha birta ee goobta.
• Dabeecadda macdan ee Dhuunta Birta Ductile waxay la macno tahay in tuubuhu si fudud ugu yaallo dhulka hoostiisa oo leh meelaha tuubooyinka caadiga ah.
•Tuubooyinka DI-du waxay bixiyaan xoog adkaysi ka sarreeya birta khafiifka ah waxayna sii hayaan caabbinta daxalka ee birta shubka ah.
