Malinga ndi njira yopangira, mapaipi achitsulo amatha kugawidwa m'magulu awiri: mapaipi achitsulo osasunthika ndi mapaipi achitsulo.Pakati pawo, ERW zitsulo mapaipi ndi mtundu waukulu wa mipope zitsulo welded.Masiku ano, timakamba za mitundu iwiri ya mapaipi achitsulo omwe amagwiritsidwa ntchito ngati zopangira zopangira: mapaipi opanda msoko ndi mapaipi a ERW casing.
Chitoliro chopanda msoko - chitoliro chachitsulo chopangidwa ndi chitoliro chachitsulo chosasunthika;Chitoliro chachitsulo chosasunthika chimatanthawuza chitoliro chachitsulo chopangidwa ndi njira zinayi za kugudubuza kotentha, kugudubuza kozizira, kujambula kotentha ndi kujambula kozizira.Thupi la chitoliro palokha lilibe ma welds.
ERW thupi - ERW (Electric Resistant Weld) chitoliro chachitsulo chopangidwa ndi chitoliro chowotcherera chamagetsi chimatanthawuza chitoliro chotalikirapo chamsoko wopangidwa ndi kuwotcherera pafupipafupi kukana.Mapepala achitsulo (makoyilo) a mapaipi opangidwa ndi magetsi amapangidwa kuchokera kuchitsulo chochepa cha carbon micro-alloy chokulungidwa ndi TMCP (njira yoyendetsedwa ndi thermomechanical).
1. OD kulolerana chitoliro chachitsulo chosasunthika: pogwiritsa ntchito njira yopangira yotentha yotentha, kukula kumamalizidwa pafupifupi 8000 ° C.Mapangidwe a zopangira, kuziziritsa, ndi kuzizira kwa mpukutuwo zimakhudza kwambiri m'mimba mwake, kotero zimakhala zovuta kulamulira bwino m'mimba mwake, ndipo kusinthasintha kwake kumakhala kwakukulu.ERW chitoliro chachitsulo: chimapangidwa ndi kupindika kozizira, ndipo m'mimba mwake imachepetsedwa ndi 0,6%.The ndondomeko kutentha kwenikweni mosalekeza kutentha firiji, kotero awiri akunja amawongoleredwa molondola, ndi kusinthasintha osiyanasiyana ndi yaing'ono, amene amathandiza kuthetsa wakuda zikopa zachikopa;
2. Chitoliro chachitsulo chosasunthika chokhala ndi kulekerera makulidwe a khoma: Amapangidwa ndi perforating zitsulo zozungulira, ndipo kupatuka kwa khoma kumakhala kwakukulu.Kugubuduza kotentha kotsatira kumatha kuthetsa kusagwirizana kwa makulidwe a khoma, koma makina amakono amatha kungowongolera mkati mwa ± 5 ~ 10% t.Chitoliro chachitsulo cha ERW: Mukamagwiritsa ntchito koyilo yotenthedwa ngati zopangira, kulolerana kwa makulidwe amakono otentha kumatha kuwongoleredwa mkati mwa 0.05mm.
3. Zowonongeka kunja kwa workpiece zomwe zimagwiritsidwa ntchito kuti ziwoneke ngati chitoliro chachitsulo chosasunthika sizingathetsedwe mu njira yotentha yopukutira, koma zimatha kupukutidwa pambuyo pomaliza kumaliza, kugunda kwa helical komwe kumatsalira pambuyo nkhonya kumatha kuthetsedwa pang'ono pochepetsa makoma.Chitoliro chachitsulo cha ERW chimapangidwa kuchokera ku koyilo yotenthedwa ngati zinthu zopangira.Ubwino wa pamwamba wa koyilo ndi wofanana ndi mtundu wapaipi yachitsulo ya ERW.Ubwino wa pamwamba wa ma koyilo opindidwa otentha ndi osavuta kuwongolera ndipo ndi apamwamba kwambiri.Choncho, khalidwe lapamwamba la chitoliro chachitsulo cha ERW ndilabwino kwambiri kuposa chitoliro chopanda chitsulo.
4. Chitoliro chachitsulo chosasunthika chowulungika: kugwiritsa ntchito njira yopukutira yotentha.The zopangira zikuchokera zitsulo chitoliro, zinthu kuzirala ndi kuzirala boma mpukutuwo zimakhudza kwambiri m'mimba mwake akunja, choncho n'zovuta molondola kulamulira awiri akunja, ndi kusinthasintha osiyanasiyana osiyanasiyana.ERW chitsulo chitoliro: opangidwa ndi kupendekera kozizira, m'mimba mwake akunja amayendetsedwa ndendende, ndi kusinthasintha osiyanasiyana ndi kochepa.
5. Kuyesa kwazitsulo Zomwe zimapangidwira zachitsulo chosasunthika ndi chitoliro chachitsulo cha ERW zimagwirizana ndi miyezo ya API, koma mphamvu ya chitoliro chachitsulo chosasunthika nthawi zambiri imakhala pamtunda wapamwamba, ndipo ductility ili pamtunda wotsika.M'malo mwake, chizindikiro champhamvu cha chitoliro chachitsulo cha ERW chili bwino kwambiri, ndipo index ya pulasitiki ndi 33.3% kuposa muyezo.Chifukwa chake ndi chakuti monga zopangira za chitoliro chachitsulo cha ERW, ntchito ya koyilo yotentha yotentha imatsimikiziridwa ndi smelting ya micro-alloy, kuyeretsa kunja kwa ng'anjo, ndi kuzizira koyendetsedwa ndi kugudubuza;pulasitiki.Zochitika mwangozi.
6. Zopangira za ERW zitsulo chitoliro ndi koyilo yotentha yotentha, yomwe imakhala yolondola kwambiri pakugudubuza, yomwe ingatsimikizire kuti yunifolomu ya gawo lililonse la koyiloyo ikugwira ntchito.
7. Zopangira za ERW zotentha zopindika chitsulo chopopera ndi kukula kwa tirigu zimatengera kukula ndi kukhuthala kosalekeza kosalekeza, wosanjikiza wokhazikika watirigu ndi wandiweyani, palibe gawo la makhiristo a columnar, shrinkage porosity ndi pores, kupatuka kwa kapangidwe kake ndikochepa., ndipo kapangidwe kake ndi kakang'ono;kuwongolera mu njira yopukutira yotsatira Kugwiritsa ntchito ukadaulo wopukutira wozizira kumatsimikiziranso kukula kwambewu yazinthu zopangira.
8. Kuyesa kukana kwachitsulo kwa chitoliro chachitsulo cha ERW kumagwirizana ndi makhalidwe a zopangira ndi kupanga chitoliro.Kufanana kwa makulidwe a khoma ndi ovality ndiabwino kwambiri kuposa mapaipi achitsulo osasunthika, chomwe ndichifukwa chachikulu chomwe kukana kugwa ndikokwera kuposa mapaipi achitsulo opanda zitsulo.
9. Kuyesa kwamphamvu Chifukwa kulimba kwa zinthu zapansi pa chitoliro chachitsulo cha ERW ndipamwamba kangapo kuposa chitoliro chachitsulo chosasunthika, kulimba kwa weld ndiye chinsinsi cha chitoliro chachitsulo cha ERW.Ndi kulamulira zili zonyansa mu zopangira, kutalika ndi malangizo a kudula burr, mawonekedwe a m'mphepete kupanga, ndi kuwotcherera ngodya, liwiro kuwotcherera, mphamvu Kutentha ndi pafupipafupi, ndi kuwotcherera extrusion voliyumu, wapakatikati pafupipafupi retraction kutentha ndi kuya, kutalika kwa gawo kuzirala mpweya ndi magawo ena ndondomeko zimatsimikiziridwa.Mphamvu weld mphamvu imafika kupitirira 60% yazitsulo zoyambira.Ndi kukhathamiritsa kwina, mphamvu ya weld imatha kukhala pafupi ndi mphamvu yazitsulo zoyambira, zomwe zimatsimikizira kuti palibe vuto.
10. Kuyesa kophulika Kuyesedwa koopsa kwa mapaipi azitsulo a ERW ndi apamwamba kwambiri kuposa zofunikira, makamaka chifukwa cha kufanana kwakukulu kwa makulidwe a khoma ndi kunja kwake kwa mapaipi azitsulo a ERW.