Ngati mwakhala mukuchita nawo mapulojekiti akuluakulu a mapaipi, kaya a mphamvu ya mphepo, madoko kapena milatho, posankha zipangizo za mapaipi ndi njira yomangira, kuphatikiza kumodzi sikungapeweke: chitoliro chachitsulo cha kaboni chokhala ndi FBE + kuwotcherera kwa arc wodzazidwa ndi madzi kawiri.
Musafulumire kuyang'ana mawu olembedwa. Choyamba tiyeni tikambirane za vuto lenileni lomwe limakumana nalo pamalo omanga - malo omwe ali pansi pa nthaka ndi "ovuta kwambiri". Ndi onyowa, amatha kuwononga, ndipo katundu amasintha pafupipafupi. Mapaipi wamba nthawi zambiri amawonongeka pambuyo pa zaka zingapo akugwiritsidwa ntchito. Ichi ndichifukwa chake makampani ambiri opanga mainjiniya akuyang'anaASTM A252 yogulitsaogulitsa kunja kuti apeze zinthu zambirimapaipi akuluakulu ozungulira.
Posachedwapa, tinakambirana ndi fakitale yodziwika bwino ku Cangzhou pankhani ya katundu wambiri. Njira yawo ndi yoyenera kugawana.
Si mapaipi onse a FBE inner liner omwe ali ofanana.
Tiyeni tikambirane za FBE. Anthu ambiri amaidziwa bwino ngati ufa wa epoxy wolumikizidwa. Komabe,Chitoliro chachitsulo cha kaboni chokhala ndi FBE Zomwe zimagwiritsidwa ntchito m'mapaipi a mulu zili ndi zofunikira kwambiri pankhani yokhudza kumatira, makulidwe, ndi kutentha kozizira.
Chinthu chomwe tikukambirana nthawi ino ndi cha Cangzhou Spiral Steel Pipes Group Co., Ltd. Fakitale iyi idakhazikitsidwa mu 1993 ku Cangzhou, Hebei Province. Ili ndi malo okwana masikweya mita 350,000 ndipo ili ndi chuma chonse cha ma yuan 680 miliyoni. Ili ndi antchito 680. Amapanga matani 400,000 a mapaipi achitsulo chaka chilichonse, omwe amapangidwa ndi ma yuan 1.8 biliyoni. Ndi amodzi mwa omwe ali ndi maudindo apamwamba kwambiri m'munda wa mapaipi achitsulo chozungulira ndi zinthu zokutidwa.
Mapaipi achitsulo cha kaboni okhala ndi FBE omwe adapanga samangogwiritsa ntchito ufa wokha. M'malo mwake, amawongolera mwamphamvu liwiro la mzere wophimba ndi kutentha m'dera lotenthetsera, zomwe zimathandiza FBE kulowa bwino pamwamba pa chitoliro chachitsulo, ndikupanga gawo loteteza lolimba, lopitirira komanso losagwira ntchito.
N’chifukwa chiyani kuli kofunikira kulabadira njira yowotcherera mapaipi a mulu?
Mavuto a mapaipi a mulu ndi osiyana kwambiri ndi a mapaipi wamba amadzi. Mphamvu yokhudza kugwedezeka kwa mulu, mphamvu ya axial yomwe imagwira ntchito kwa nthawi yayitali, komanso kusakhazikika kwa nthaka pansi pa nthaka zonse zimafuna kuti ma weld akhale odalirika kwambiri.
Fakitale iyi ku Cangzhou imagwiritsa ntchito kuwotcherera kwa arc pansi pamadzi kawiri. Omwe amadziwa bwino kuwotcherera amadziwa kuti ubwino waukulu wa njirayi ndikuti msoko wowotcherera umakhala wopangidwa bwino, kuya kwake kosungunuka ndikokwanira, ndipo chiwopsezo chamkati chimakhala chochepa. Kuphatikiza apo, kuwotcherera kwa mbali ziwiri kuli ngati kuyika "inshuwaransi iwiri" pa msoko wowotcherera, chifukwa kumawonetsetsa kuti ulowa bwino mkati ndi kunja.
Poyerekeza ndi kuwotcherera mbali imodzi kapena kuwotcherera wamba, mapaipi akuluakulu opangidwa ndikuwotcherera kwa arc yonyowa kawiri pansi pa madziZimakhala zokhazikika bwino kwambiri zikamayendetsedwa ndi zinthu zosinthasintha komanso kupindika. Izi ndizofunikira kwambiri pa mapaipi ozungulira.
Mapaipi akuluakulu - nchifukwa chiyani anthu ambiri tsopano akusankha kugula zinthu zambiri?
Tsopano tafika pa nkhani yomwe yatchulidwa mu mutu wathu: Chifukwa chiyani mapaipi a ASTM A252 FBE okhala ndi DSAW ogulitsidwa kwambiri kuti aikidwe?
Yankho lake ndi losavuta - kukhazikika + ndalama zomwe zingalamuliridwe.
ASTM A252 ndi muyezo wapadera wa mapaipi achitsulo omwe amagwiritsidwa ntchito popangira milu, okhala ndi zofunikira zomveka bwino kuti azitha kulimba, kulimba kwa mphamvu, komanso kutalika. Fakitale iyi ku Cangzhou imapanga mwachindunji mapaipi akuluakulu amilu motsatira muyezo uwu, ndipo iwonso ndi ogulitsa ambiri a ASTM A252, zomwe zimapangitsa kuti pasakhale oimira pakati.
Kwa makampani opanga mainjiniya, kugula mapaipi akuluakulu odzaza ndi milu kuchokera kwa opanga otere nthawi imodzi kumakhala kopindulitsa pazifukwa zingapo. Choyamba, zofunikira zake ndi zofanana ndipo mtundu wake ndi wofanana. Kachiwiri, mtengo wake ndi wopikisana. Kachitatu, nthawi yoperekera zinthu imatha kulamulidwa - fakitale yokhala ndi mphamvu yopangira matani 400,000 pachaka ilibe nthawi yokonzekera kupanga ndi kusunga zinthu zopangira zomwe ma workshop ang'onoang'ono angagwirizane nazo.
Mu polojekiti yeniyeni, kodi mapaipi awa amagwiritsidwa ntchito kuti?
Nazi zochitika zenizeni zingapo:
Doko ndi doko: Mapaipi ozungulira ayenera kukhala olimba ku dzimbiri la m'nyanja. Mapaipi achitsulo cha kaboni okhala ndi FBE omwe amateteza dzimbiri ndi abwino kwambiri kuposa mapaipi wamba opanda kanthu.
Maziko a mlatho: Zofunikira kwambiri zimayikidwa pa mipata yolumikizira. Njira yolumikizira arc yolumikizidwa kawiri pansi pa madzi imatha kutsimikizira kusinthasintha kwa chubu chilichonse cha mulu.
Maziko a nsanja ya turbine ya mphepo: M'mimba mwake mwake waukulu, kuphimba pansi kwambiri, kunyamula katundu kwa nthawi yayitali. Mapaipi odzaza ndi mainchesi akulu, mogwirizana ndi muyezo wa ASTM A252, ndi osankhidwa kwambiri mumakampani.
Zinthu zomwe zimapangidwa ndi fakitale iyi ku Cangzhou zimagawidwa makamaka m'madera amenewa. Komanso, ubwino wawo uli m'chakuti samangopanga mapaipi ozungulira okha komanso amachita zinthu zophimba. Njira yopangira zinthu imagwirizanitsidwa kwambiri, ndipo amathanso kuwongolera ubwino wake nthawi yonse.
Mwachidule, palibe kumenyana mozungulira chitsamba.
Ngati mukufuna mapaipi achitsulo cha kaboni okhala ndi FBE, okhala ndi zofunikira kwambiri pa mipiringidzo yolumikizira (ayenera kukhala olumikizidwa ndi arc awiri), ndipo ngati polojekiti yanu ikufuna mapaipi akuluakulu, ndipo mukufuna wogulitsa katundu wodalirika wa ASTM A252 - Cangzhou Spiral Steel Pipe Group ndi njira yoyenera kuganiziridwa mosamala.
Sikuti ndi zotsika mtengo kwambiri; koma, ndikuti m'gulu ili, palibe opanga ambiri am'nyumba omwe angaphatikizepo mphamvu zopangira, ziyeneretso, njira, ndi zokutira zonse nthawi imodzi.
Ndiye, bwanji kusankha mapaipi a ASTM A252 FBE okhala ndi DSAW ogulitsidwa kwambiri kuti muwaikemo?
Yankho losavuta ndilakuti: ndi losavuta, lolimba kwambiri, ndipo limatha kupirira mayesero pansi.
Nthawi yotumizira: Epulo-30-2026