Kodi Mukudziwa Mapaipi Olumikizirana a Ductile Iron

Mbali yofunika kwambiri yachitoliro chachitsulo chosungunukaKapangidwe ndi magwiridwe antchito ndi mtundu wa malo olumikizirana omwe amagwiritsidwa ntchito kulumikiza magawo a chitoliro payokha.Mtundu wa cholumikizira umakhudza kusavuta kuyika, kuthekera koyenera kuyenda, makamaka, umphumphu wa payipi kwa nthawi yayitali. Nazi mitundu yodziwika bwino ya cholumikizira chomwe chimagwiritsidwa ntchito ndi mapaipi achitsulo opangidwa ndi ductile:

ZOPANGIRA PANSI (TYTON):

• Kufotokozera:Ma push-on joints, omwe amadziwikanso kuti Tyton kapena slip joints, amagwiritsa ntchito njira yosavuta pomwe spigot (male end) ya chitoliro chimodzi imayikidwa mu belu (male end) la lina ndi gasket ya rabara yomwe imayikidwa mu belu.
• Ubwino:Malumikizidwe awa ndi osavuta kuwalumikiza mwachangu, safuna zida zapadera, ndipo ndi osinthasintha mokwanira kuti agwirizane ndi kupotoka pang'ono kwa ngodya ndi kuyenda kwa nthaka.
• Mapulogalamu:Amagwiritsidwa ntchito kwambiri m'madzi ndi m'madzi otayira komwe kumafunika kupanikizika pang'ono.

ZOPANGIRA ZAMAKANIKI

• Kufotokozera:Malumikizidwe a makina amakhala ndi gland, gasket, ndi mabolt ndi mtedza. Malekezero a spigot a chitolirocho amalowa mu belu la chitoliro cholumikizira, ndipo gasketyo imapanga chisindikizo ndipo glandyo imakanikiza gasketyo kudzera mu kulimbitsa mabolt.
• Ubwino:Amapereka kusinthasintha pakulinganiza ndipo ndi oyenera kugwiritsa ntchito pamene pakufunika kuchotsedwa. Angathenso kulola kupotoka pang'ono kwa ngodya.
• Mapulogalamu:Yoyenera makina ogawa madzi ndi gasi, makamaka m'madera omwe akukonzedwa pafupipafupi kapena kusintha makina.

ZOLUMIKIZIRA ZOKHUDZA

• Kufotokozera:Ma flange olumikizirana amagwiritsa ntchito ma flange omangiriridwa kumapeto kwa mapaipi, omangiriridwa pamodzi ndi gasket pakati kuti atsimikizire kutichisindikizo cholimba.
• Ubwino:Amapereka kulumikizana kolimba komanso kotetezeka, amalola kusweka mosavuta, ndipo ndi abwino kwambiri polumikizira mapampu ndi zolumikizira komwe payipi imalumikizirana ndi zida.
• Mapulogalamu:Amagwiritsidwa ntchito kwambiri m'malo oyeretsera mankhwala, malo opopera madzi, ndi m'magawo a mapaipi omwe amafunika kuyang'aniridwa kapena kukonzedwa nthawi ndi nthawi.

ZOLUMIKIZANA ZOKHUDZA/ZOGWIRIZANA

• Kufotokozera:Mtundu uwu wa loint umakhala ndi malo opindika kumapeto kwa chitoliro, komwe kumayikidwa cholumikizira kuti chilumikize mapaipi. Gasket ya rabara mkati mwa cholumikiziracho imatsimikizira kutseka.
• Ubwino:Ma grooved filaments amapereka kusonkhana ndi kusweka mwachangu, kusinthasintha kwa kayendedwe, ndipo amatha kulola kuyenda pang'ono ndi kolunjika.
• Mapulogalamu:Kawirikawiri amagwiritsidwa ntchito m'makina oteteza moto, HVAC, ndi mafakitale komwe kusintha kosavuta kwa makina opachikira mapaipi ndikofunikira.

MAGALIDWE A ZIPANGIZO

Mapaipi achitsulo opangidwa ndi ductile amapezeka m'magawo osiyanasiyana azinthu, chilichonse chopangidwa kuti chikwaniritse zofunikira ndi ntchito zinazake. Magawo awa amatanthauzidwa ndi mabungwe omwe ali ndi miyezo, monga American Society for Testing and Materials (ASTM), International Organization for Standardization (lSO), ndi European Committee for Standardization (EN).

Kusiyana kwa mitundu ya zinthu nthawi zambiri kumakhudza kusiyana kwa mphamvu zamakina monga mphamvu yokoka, mphamvu yotulutsa, kutalika, ndi kuuma, komanso kapangidwe ka mankhwala kuti awonjezere mawonekedwe monga kukana dzimbiri, kulimba, ndi kukana kugunda. Nazi zina mwa mitundu yodziwika bwino ya zinthu zomwe zimagwiritsidwa ntchito pa mapaipi achitsulo opangidwa ndi ductile:

MAGALIMOTO OMWE ALI WONSE
Magiredi a ISO 2531/EN 545/EN 598

• EN-GJS-400-15 (1S0 2531/EN 545): Mtundu uwu umapereka mphamvu yabwino kwambiri yolumikizira ma ducts okhala ndi mphamvu yocheperako ya 400 MPa ndipo ndiamagwiritsidwa ntchito kwambiri m'madzi ndi m'madzi otayira.
• EN-GJS-450-10 (IS0 2531/EN 545): Ndi mphamvu yolimba ya 450 MPa, giredi iyi imapereka mgwirizano wabwino pakati pa mphamvu ndi kusinthasintha, yoyenera kugwiritsidwa ntchito pamavuto apamwamba.
• EN-GJS-500-7 (lS0 2531/EN 598): Mtundu uwu wapangidwira kugwiritsa ntchito zimbudzi, zomwe zimapereka mphamvu yowonjezera komanso kukana kuwonongeka ndi mphamvu yocheperako ya 500 MPa
• EN-GJS-600-3 (1S0 2531/EN 598): Mphamvu yapamwamba kwambiri yomwe imagwiritsidwa ntchito kwambiri pa mapaipi achitsulo opangidwa ndi ductile, yokhala ndi mphamvu yocheperako ya 600 MPa, yoyenera kugwiritsidwa ntchito pamakina amphamvu komanso m'mafakitale.

Magiredi a ASTM A536

• 60-40-18:Mofanana ndi EN-GJS-400-15, ili ndi mphamvu yokoka ya 414 MPa ndipo imadziwika ndi mphamvu zake zodumphadumpha komanso kukana kugwedezeka.
• 65-45-12:Chida ichi chimapereka mphamvu yolimba komanso yolimba yokhala ndi mphamvu yolimba ya 448 MPa, zomwe zimapangitsa kuti chigwiritsidwe ntchito m'njira zosiyanasiyana.
• 80-55-06:Ndi mphamvu yokoka ya 552 MPa, giredi iyi imagwiritsidwa ntchito pomwe mphamvu yapamwamba komanso kusinthasintha pang'ono kumafunika
• 100-70-03:Mphamvu yapamwamba kwambiri mu ASTM A536, yomwe imapereka mphamvu yokoka ya 689 MPa yokhala ndi ductility yochepa, imagwiritsidwa ntchito pazinthu zomwe zimafuna mphamvu yayikulu.

MAGALIDWE APADERA

Opanga ena amapanga mapaipi achitsulo opangidwa ndi ductile m'magulu apadera omwe sakufotokozedwa momveka bwino m'magulu wamba koma amapangidwira kuti apereke mawonekedwe abwino pa ntchito zinazake, monga:

• Magiredi okana kukhudzidwa kwambiri:Yopangidwira madera omwe nthawi zambiri amakhudzidwa ndi zivomerezi kapena mapaipi omwe amayendetsedwa ndi magalimoto ambiri
• Magiredi osagonjetsedwa ndi dzimbiri:Kuwonjezeredwa ndi zinthu zina zowonjezera monga mkuwa, nickel, kapena chromium kuti ziwongolerekukana dzimbiri.

MMENE MUNGASANKIRE GIREDI YOYENERA
Kusankha zipangizo zoyenera zogwiritsira ntchito mapaipi achitsulo opangidwa ndi ductile kumadalira zinthu zosiyanasiyana, kuphatikizapo mtundu wa madzi omwe akunyamulidwa, mphamvu zogwirira ntchito, momwe zinthu zilili, ndi zofunikira zina za polojekitiyi, Mainjiniya ayenera kuganizira zinthuzi mogwirizana ndi mawonekedwe a zinthuzo kuti asankhe mtundu woyenera kwambiri womwe umatsimikizira kudalirika, moyo wautali, komanso magwiridwe antchito a makina a mapaipi.

KUDZIWA KWA MAPAIPI ACHITSULO OCHOKERA
Kudzimbiritsa ndi vuto lalikulu pa mapaipi achitsulo chosungunuka, chifukwa kungakhudze kwambiri moyo wawo wautali, magwiridwe antchito, komanso ubwino wa madzi omwe amanyamula. Kumvetsetsa njira zodzimbiritsira, zotsatira zake, ndi njira zochepetsera n'kofunika kwambiri kuti mapaipi achitsulo chosungunuka asawonongeke.

Njira Zopangira Dzimbiri

• Kutupa kwa Galvanic:Zimachitika pamene chitsulo chosungunuka chikakhudzana ndi chitsulo chabwino kwambiri (monga mkuwa) pamaso pa electrolyte, zomwe zimapangitsa kuti chitsulocho chizizire mofulumira.
• Kutupa kwa Zinyalala:Kutupa komwe kumachitika pamalo enaake komwe kumabweretsa mabowo ang'onoang'ono kapena maenje pamwamba pa chitoliro. Izi nthawi zambiri zimachitika chifukwa cha kukhalapo kwa ma chloride ndi pH yochepa m'madzi.
• Kutupa komwe kumakhudzidwa ndi tizilombo toyambitsa matenda (MlC):Zimayambitsidwa ndi mabakiteriya ena omwe amatha kupanga zinthu zina zowononga, zomwe zimapangitsa kuti dzimbiri lizichuluke kwambiri.
• Kutupa kwa Zithunzi:Zimaphatikizapo kuchotsedwa kwa chitsulo kuchokera ku chitsulo chosungunuka, ndikusiya graphite matrix yopanda kanthu.kukhulupirika kwa kapangidwe kake.

Zotsatira za Kudzimbiritsa

• Moyo Wapaipi Wochepa: Kudzimbiritsa kungafupikitse kwambiri moyo wa mapaipi achitsulo chosungunuka, zomwe zimapangitsa kuti mapaipi achitsulo asamagwire ntchito msanga komanso kufunika kosintha.
• Kuchepa kwa Ubwino wa Madzi: Zinthu zochokera ku dzimbiri zimatha kuipitsa madzi, zomwe zimakhudza kukoma kwake, mtundu wake, komanso chitetezo chake.
• Ndalama Zowonjezereka Zokonzera: Mapaipi okhala ndi dzimbiri angafunike kukonzanso ndi kukonza pafupipafupi, zomwe zimapangitsa kuti ndalama zogwirira ntchito zikhale zapamwamba.s.

Njira Zothanirana ndi Kudzimbiritsa

• Chitetezo cha Cathodic:Njira yomwe imaphatikizapo kulumikiza anode yoperekedwa ku chitoliro kapena kugwiritsa ntchito mphamvu yokoka kuti muteteze chitolirocho ku dzimbiri. Njirayi imasinthira ntchito yowononga ku anode, yomwe imawononga m'malo mwachitoliro.
• Zophimba ndi Mafelemu:Kuyika zophimba zoteteza kunja ndi mkati mwake kungateteze chitoliro ku zinthu zowononga. Zophimba za zinc, mwachitsanzo, zimapereka chitetezo cha galvanic, pomwe zophimba za epoxy kapena simenti-mortar zimaletsa kukhudzana mwachindunji pakati pa madzi ndi mkati mwa chitoliro.
• Kulamulira Madzi:Kusintha milingo ya pH ndikuwongolera kuchuluka kwa ma ayoni amphamvu (monga ma chloride) m'madzi kungachepetse dzimbiri.
• Zoletsa dzimbiri:Kuwonjezera zoletsa dzimbiri m'madzi kungapangitse filimu yoteteza mkati mwa chitolirocho,kuchepetsa njira yowononga
• Zoganizira za Kapangidwe:Kupanga mapaipi kuti achepetse malo osasunthika a madzi, kuonetsetsa kuti madzi akuyenda bwino, komanso kupewa kukhudzana mwachindunji ndi zitsulo zabwino kwambiri kungathandize kuchepetsa ngozi ya dzimbiri.
• Kuyang'anira ndi Kusamalira Nthawi Zonse:kukhazikitsa pulogalamu yowunikira ndi kukonza nthawi zonse kuti mupeze zizindikiro zoyambirira za dzimbiri ndikuzithetsa mwachangu.

KUPANGA NDI KUPANGA M'MPHEPO YA CHITSULO CHA DUCTILE
Kuphimba ndi kuphimba ndi njira zofunika kwambiri zotetezera mapaipi achitsulo chosungunuka, zomwe zimawonjezera moyo wawo popewa dzimbiri ndikuwonetsetsa kuti madzi omwe amaperekedwa ndi abwino. Mankhwalawa samangoteteza chitoliro mkati ndi kunja ku malo owonongeka komanso amathandizira kuti ntchito ya hydraulic iyende bwino komanso kuchepetsa ndalama zosamalira. Nayi chidule cha ma lining ndi ma coating omwe amagwiritsidwa ntchito pa mapaipi achitsulo chosungunuka:

Mapepala amkati
Simenti ndi Mtondo Wophimba

• Ntchito:Amagwiritsidwa ntchito kwambiri pogawa madzi akumwa chifukwa cha chitetezo chake chabwino kwambiri ku tuberculation (kuchuluka kwa mchere) komanso mphamvu zake zopanda pH, zomwe zimateteza chitoliro ku madzi amphamvu.
• Ubwino:Zimawonjezera mphamvu ya kayendedwe ka madzi, zimachepetsa ndalama zogulira mphamvu, komanso zimachepetsa kukula kwa mabakiteriya.

Polyethylene (PE) Lining:

• Ntchito:Yoyenera mapaipi onyamula mankhwala amphamvu, zimbudzi, ndi madzi otayira.
• Ubwino:Imapereka kukana kwapadera kwa mankhwala, kuteteza mkati mwa chitoliro kuti chisaukidwe ndi mankhwala.

Epoxy Lining:

• Kugwiritsa ntchito: Amagwiritsidwa ntchito m'madzi akumwa komanso m'mafakitale komwe kumafunika kukana mankhwala ndi malo osalala kuti madzi ayende bwino.
• Ubwino:Amapereka chotchinga cholimba, chopanda msoko, komanso cholimba kuti chisawonongeke ndi dzimbiri.

Chipinda cha Polyurethane:

• Ntchito:Imagwiritsidwa ntchito pochiza malo owononga komanso owononga kwambiri, monga ntchito za minina ndi ntchito za sewaae
• Ubwino:Imapereka kukana kwabwino kwambiri kwa mikwingwirima komanso moyo wautali, ngakhale m'mikhalidwe yovuta

Zophimba Zakunja
Zophimba za Zinc:

• Ntchito:Chophimba choteteza chomwe chimayikidwa kunja kwa mapaipi achitsulo chosungunuka, nthawi zambiri chimakutidwa ndi utoto womaliza wa bituminous kapena polymeric topcoat kuti chitetezeke kwambiri.
• Ubwino:Imagwira ntchito ngati anode yoperekera nsembe, imawononga m'malo mwa chitsulo (chitetezo cha galvanic) ndipo imakulitsa kwambiri moyo wa chitolirocho.

Chipinda cha Polyethylene:

• Ntchito:Kawirikawiri amagwiritsidwa ntchito m'nthaka yolimba. Chitolirocho chimakutidwa ndi chikwama cha polyethylene chosasunthika chomwe chimagwira ntchito ngati chotchinga pakati pa chitolirocho ndi nthaka yozungulira.
• Ubwino:Ndi yothandiza popewa dzimbiri chifukwa cha kuwononga nthaka, komanso ubwino wake ndi wosavuta komanso wotsika mtengo kugwiritsa ntchito.

Chophimba cha Epoxy Cholumikizidwa ndi Fusion:

• Ntchito:Chophimba chakunja chomwe chimayikidwa ngati ufa womwe umasungunuka ndikugwirizana ndi pamwamba pa chitoliro, chomwe chimagwiritsidwa ntchito m'madzi akumwa komanso m'madzi otayira.
• Ubwino:Imapereka kukana mankhwala, kulimba, komanso chitetezo ku dzimbiri ndi kuwonongeka kwa UV.

Chophimba cha Polyurethane:

• Ntchito:Imagwiritsidwa ntchito kuteteza kunja m'malo omwe ali ndi mphamvu zambiri zowononga komanso m'malo omwe ali ndi mphamvu zambiri za UV.
• Ubwino: Imapereka kukana kwakukulu ku kugunda, kusweka, ndi kuwonetsedwa ndi mankhwala, ndikusunga umphumphu wa chitoliro pakapita nthawi.