Mapaipi achitsulo amabwera m'njira zosiyanasiyana komanso kukula kwake. Chitoliro chopanda msoko ndi njira yosalumikizidwa, yopangidwa ndi chitsulo chopindika. Ponena za mapaipi achitsulo olumikizidwa, pali njira zitatu: ERW, LSAW ndi SSAW.
Mapaipi a ERW amapangidwa ndi mbale zachitsulo zolumikizidwa zolimba. Chitoliro cha LSAW chimapangidwa ndi mbale yachitsulo yolumikizidwa yolumikizidwa yozungulira. Chitoliro cha SSAW chimapangidwa ndi mbale yachitsulo yolumikizidwa yozungulira yozungulira yolumikizidwa.
Tiyeni tiwone bwino mtundu uliwonse wa chitoliro, yerekezerani kusiyana kwawo, ndi momwe tingagwiritsire ntchito kufotokozera kolondola pa dongosolo.
Chitsulo chopanda msoko chachitsulo
Chitoliro chopanda msokocho chimapangidwa ndi chitoliro chachitsulo chosapanga dzimbiri, chomwe chimatenthedwa ndi kubowoledwa kuti chipange gawo lozungulira lokhala ndi dzenje. Chifukwa chitoliro chopanda msokocho chilibe malo olumikizira, chimaonedwa kuti ndi cholimba kuposa chitoliro cholumikizidwa ndipo sichimakhudzidwa ndi dzimbiri, kukokoloka ndi kulephera kwachisawawa.
Komabe, mtengo wa tani imodzi ya chitoliro chopanda msoko ndi 25-40% kuposa wa chitoliro cha ERW. Kukula kwa chitoliro chachitsulo chopanda msoko kumayambira pa 1/8 inchi mpaka 36 inchi.
Chitoliro chotsukira chotsutsa (ERW)
Chitoliro chachitsulo cha ERW (resistance welding) chimapangidwa mwa kukulunga chitsulo kukhala chitoliro ndikulumikiza malekezero awiri ndi ma electrode awiri amkuwa. Ma electrode awa amakhala ngati diski ndipo amazungulira pamene zinthuzo zikudutsa pakati pawo. Izi zimathandiza kuti electrode ikhale yolumikizana ndi zinthuzo nthawi zonse kwa nthawi yayitali yolumikiza mosalekeza. Kupita patsogolo kwa ukadaulo wolumikiza kukupitilizabe kukonza njirayi.
Chitoliro cha ERW ndi chotsika mtengo komanso chothandiza m'malo mwa chitoliro chachitsulo chosasunthika, chomwe chimakhala cholimba kuposa chitoliro cha SAW. Poyerekeza ndi njira yosungunulira yomwe imagwiritsidwa ntchito mu chitoliro cholumikizidwa ndi arc pansi pamadzi, zolakwika nazonso sizingachitike, ndipo zolakwika za weld yowongoka zimatha kuzindikirika mosavuta ndi kuwunikira kwa ultrasound kapena kuwona.
Chitoliro cha ERW chimakula kuyambira mainchesi (15 mm) mpaka mainchesi 21.34 mm.
Chitoliro cholumikizidwa cha arc choviikidwa
LSAW (straight seam welding) ndi SSAW (spiral seam welding) ndi mitundu yosiyanasiyana ya mapaipi olumikizidwa ndi arc welded. Njira yolumikizira arc welding yolumikizidwa ndi arc imapanga kuchuluka kwa mphamvu yamagetsi kuti iteteze kutentha kwachangu kwa flux layer ndikukhazikika m'dera lolumikizira.
Kusiyana kwakukulu pakati pa mapaipi a LSAW ndi SSAW ndi komwe weld imalowera, zomwe zimakhudza mphamvu ya woyatsira mphamvu komanso kusavuta kupanga. LSAW imagwiritsidwa ntchito pakugwiritsa ntchito mphamvu yapakati mpaka yapamwamba, ndipo SSAW imagwiritsidwa ntchito pakugwiritsa ntchito mphamvu yamagetsi yochepa. Mapaipi a LSAW ndi okwera mtengo kuposa mapaipi a SSAW.
Chitoliro cholumikizidwa cha arc cholumikizidwa cha longitudinal
Chitoliro cha LSAW chimapangidwa pogwiritsa ntchito chopangira chitsulo chotentha chozungulira kukhala silinda ndikulumikiza malekezero awiriwa pamodzi pogwiritsa ntchito cholumikizira cha mzere. Izi zimapanga chitoliro cholumikizidwa mozungulira. Mapaipi awa amagwiritsidwa ntchito makamaka pa mapaipi otumizira mafuta, gasi wachilengedwe, malasha amadzimadzi, ma hydrocarbon, ndi zina zotero.
Pali mitundu iwiri ya mapaipi a LSAW: msoko umodzi wopingasa ndi msoko wawiri (DSAW). Chitoliro chachitsulo cha LSAW chimapikisana ndi chitoliro chachitsulo chopingasa ndi chitoliro chachitsulo cha mainchesi 16 mpaka 24 cha ERW. Mu makampani opanga mafuta ndi gasi, mapaipi akuluakulu a API 5L LSAW amagwiritsidwa ntchito ponyamula ma hydrocarbons kutali komanso moyenera.
M'mimba mwake wa chitoliro cha LAW nthawi zambiri chimakhala pakati pa mainchesi 16 ndi mainchesi 60 (406 mm ndi 1500 mm).
Zotsalira zopanda msoko - zotsalira za nkhondo zophulika - kuwotcherera arc yolumikizidwa ndi nthawi yayitali - kuwotcherera arc yolumikizidwa ndi spiral yolumikizidwa ndi spiral - pipeline - kuwotcherera arc yolumikizidwa ndi spiral yolumikizidwa ndi spiral
Chitoliro cha SSAW
Chitoliro chachitsulo cha SSAW chimapangidwa pozungulira ndi kulumikiza chingwe chachitsulo mozungulira kapena mozungulira kuti chipange weld kukhala chozungulira. Njira yolumikizira yozungulira imapangitsa kuti zikhale zotheka kupanga zinthu zazikulu. Mapaipi achitsulo ozungulira amagwiritsidwa ntchito makamaka potumiza madzi otsika mphamvu, monga mapaipi m'mapulatifomu akunyanja, mafakitale a petrochemical kapena malo osungiramo sitima, komanso nyumba za anthu wamba ndi zomangira.
Chitoliro cha SSAW nthawi zambiri chimakhala mainchesi 20 mpaka mainchesi 100 (406 mm mpaka 25040 mm).
Momwe mungayitanitsa mapaipi achitsulo pa ntchito yanu
Mukayitanitsa mapaipi achitsulo, pali miyeso iwiri yofunika: kukula kwa chitoliro (NPS) ndi makulidwe a khoma (ndandanda). Pa mapaipi osakwana mainchesi 4, kutalika kwa chitoliro kungakhale kopanda dongosolo (SRL) mamita 5-7, kapena pa mapaipi opitirira mainchesi 4, kutalika kwa chitoliro kungakhale kopanda dongosolo (DRL) mamita 11-13. Kutalika kwapadera kulipo pa mapaipi ataliatali. Malekezero a chitoliro akhoza kukhala bevel (be), plane (pe), ulusi (THD) ndi coupling (T&C) kapena groove.
Chidule cha tsatanetsatane wa dongosolo la nthawi zonse:
Mtundu (wopanda msoko kapena wolukidwa)
Kukula kwa chitoliro chodziwika
Ndandanda
Mtundu wa mapeto
Gulu la zinthu
Kuchuluka mu mamita kapena mapazi kapena matani.
Ngati mukuganiza zogula CHIPAI CHOSASUNGA, CHIPAI CHOPANGIDWA CHA ERW, CHIPAI CHOPANGIDWA CHA SSAW KAPENA CHIPAI CHOPANGIDWA CHA LSAW, onani njira zomwe JINDALAI ili nazo ndipo ganizirani kulumikizana ndi gulu lathu kuti mudziwe zambiri. Tikupatsani yankho labwino kwambiri pa ntchito yanu.
Lumikizanani nafe tsopano!
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Nthawi yotumizira: Epulo-04-2023
