Kupanga chitoliro chachitsulo kunayambira kumayambiriro kwa zaka za m'ma 1800.Poyambirira, chitoliro chimapangidwa ndi manja - potenthetsa, kupindika, kukumbatira, ndikumenyetsa m'mphepete.Njira yoyamba yopangira mapaipi odzipangira okha idayambitsidwa mu 1812 ku England.Njira zopangira zakhala zikuyenda bwino kuyambira nthawi imeneyo.Njira zina zopangira zitoliro zodziwika bwino zafotokozedwa pansipa.
Lap Welding
Kugwiritsa ntchito kuwotcherera pamiyendo kupanga mapaipi kunayambika kumayambiriro kwa zaka za m'ma 1920.Ngakhale kuti njira imeneyi sikugwiritsidwanso ntchito, mapaipi ena amene anapangidwa pogwiritsa ntchito kuwotcherera pa lap akugwirabe ntchito mpaka pano.
Powotcherera m’miyendo, zitsulo zinkatenthedwa mu ng’anjo kenako n’kukulungidwa ngati silinda.M'mphepete mwa mbale yachitsulo ndiye "mabala".Kujambula kumaphatikizapo kukuta m'mphepete mwa mkati mwa mbale yachitsulo, ndi m'mphepete mwa mbali ina ya mbaleyo.Msokowo unkawotchedwa pogwiritsa ntchito mpira wowotcherera, ndipo chitoliro chotenthetsera chinadutsa pakati pa odzigudubuza omwe amakakamiza msoko pamodzi kuti apange mgwirizano.
Ma welds opangidwa ndi lap welding sakhala odalirika monga omwe amapangidwa pogwiritsa ntchito njira zamakono.Bungwe la American Society of Mechanical Engineers (ASME) lapanga equation yowerengera mphamvu yovomerezeka ya chitoliro, kutengera mtundu wa kupanga.Equation iyi imaphatikizapo kusintha komwe kumadziwika kuti "joint factor", yomwe imachokera ku mtundu wa weld womwe umagwiritsidwa ntchito popanga msoko wa chitoliro.Mipope yopanda msoko imakhala ndi gawo la 1.0 Lap welded chitoliro ali ndi gawo la 0,6.
Electric Resistance Welded Pipe
Electric resistance welded (RW) chitoliro amapangidwa ndi ozizira kupanga pepala lachitsulo mu mawonekedwe cylindrical.Panopa amadutsa pakati pa mbali ziwiri zazitsulo kuti aziwotcha zitsulo mpaka pamene m'mphepete mwake amakakamizika pamodzi kuti apange mgwirizano popanda kugwiritsa ntchito zitsulo zopangira zitsulo.Poyamba kupanga izi kumagwiritsa ntchito ma frequency otsika a AC kutenthetsa m'mphepete.Njira yotsika pafupipafupiyi idagwiritsidwa ntchito kuyambira m'ma 1920 mpaka 1970. Mu 1970, njira yotsika pafupipafupi idasinthidwa ndi njira yapafupipafupi ya ERW yomwe idapanga weld wapamwamba kwambiri.
Pakapita nthawi, ma welds otsika pafupipafupi ERW chitoliro adapezeka kuti amatha kuwononga dzimbiri, ming'alu ya mbedza, komanso kulumikizana kosakwanira kwa seams, kotero otsika pafupipafupi ERW sagwiritsidwanso ntchito kupanga chitoliro.Njira yothamanga kwambiri ikugwiritsidwabe ntchito popanga mapaipi kuti agwiritsidwe ntchito pomanga mapaipi atsopano.
Magetsi Kung'anima Welded Chitoliro
Magetsi kung'anima welded chitoliro anapangidwa kuyambira 1927. Kuwotcherera kung'anima anakwaniritsidwa ndi kupanga chitsulo pepala mu mawonekedwe cylindrical.M'mphepete mwake munatenthedwa mpaka kusungunuka pang'ono, kenaka amakakamizika pamodzi mpaka chitsulo chosungunula chikatulukiridwa ndi kupanga mkanda.Monga otsika pafupipafupi ERW chitoliro, ndi seams wa kung'anima welded chitoliro atengeke dzimbiri ndi mbedza ming'alu, koma pang'ono kuposa ERW chitoliro.Chitoliro chamtunduwu chimathanso kulephera chifukwa cha mawanga olimba muzitsulo za mbale.Chifukwa chakuti chitoliro chowotcherera chong'anima chimapangidwa ndi wopanga m'modzi, akukhulupirira kuti mawanga olimbawa adachitika chifukwa cha kuzimitsidwa mwangozi kwachitsulo panthawi yopanga yomwe wopangayo amagwiritsa ntchito.Kuwotcherera kung'anima sikugwiritsidwanso ntchito popanga chitoliro.
Chitoliro Cholowetsedwa Pawiri Pawiri (DSAW).
Mofanana ndi njira zina zopangira mapaipi, kupanga kwa Double Submerged Arc Welded Pipe kumaphatikizapo kupanga zitsulo zoyamba kukhala mawonekedwe a cylindrical.Mphepete mwa mbale yokulungidwa imapangidwa kuti ma grooves ooneka ngati V apangidwe mkati ndi kunja kwa malo a msoko.Msoko wa chitoliro ndiye wowotchedwa ndi chiphaso chimodzi cha arc welder mkati ndi kunja (kotero kumizidwa kawiri).Arc yowotcherera imamizidwa pansi pa flux.
Ubwino wa njirayi ndikuti ma welds amalowa 100% ya khoma la chitoliro ndikupanga chomangira cholimba kwambiri cha chitoliro.
Chitoliro Chopanda Msoko
Chitoliro chopanda msoko chapangidwa kuyambira m'ma 1800.Ngakhale kuti ndondomekoyi yasintha, zinthu zina zakhala zomwezo.Chitoliro chosasunthika chimapangidwa ndi kuboola chitsulo chozungulira chotentha ndi mandrel.Chitsulo chokhala ndi dzenje chimakhala chopindika ndikutambasulidwa kuti chikwaniritse kutalika ndi m'mimba mwake.Ubwino waukulu wa chitoliro chopanda msoko ndikuchotsa zolakwika zokhudzana ndi msoko;komabe, mtengo wopangira ndi wokulirapo.
Chitoliro choyambirira chosasunthika chinali tcheru chifukwa cha zodetsa zachitsulo.Njira zopangira zitsulo zitayamba kuyenda bwino, zolakwika zimenezi zinachepa, koma sizinatheretu.Ngakhale zikuwoneka kuti chitoliro chopanda msoko chingakhale chokonda kupangidwa, chitoliro chowotcherera msoko, kuthekera kokweza mikhalidwe yofunikira mu chitoliro ndikochepa.Pachifukwa ichi, chitoliro chopanda msoko chikupezeka m'makalasi otsika komanso makulidwe a khoma kuposa chitoliro chowotcherera.
Gulu la Jindalai Steel ndi lapadera popanga mapaipi apamwamba kwambiri a ERW (Electric Resistance Welded) ndi SSAW (Spiral Submerged Arc welded).Kampani yathu yapita patsogolo φ610 mm makina owotcherera owotcherera okwera kwambiri, ndi φ3048mm spiral submerged arc welded makina.Komanso, kupatula mafakitale a ERW ndi SSAW, tili ndi mafakitale ena atatu ogwirizana ndi LSAW ndi SMLS kupanga ku China konse.
Ngati kugula mapaipi kuli mtsogolo mwanu, funsani mtengo.Tikupatsirani imodzi yomwe imakupezerani zomwe mukufuna mwachangu.Tumizani kufunsa kwanu ndipo tidzakhala okondwa kukufunsani mwaukadaulo.
We Jindalai Steel Group ndife opanga, ogulitsa kunja, omwe ali ndi masheya komanso ogulitsa osiyanasiyana Pipe yachitsulo.Tili ndi makasitomala ochokera ku Thane, Mexico, Turkey, Pakistan, Oman, Israel, Egypt, Arab, Vietnam, Myanmar.Tumizani kufunsa kwanu ndipo tidzakhala okondwa kukufunsani mwaukadaulo.
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Nthawi yotumiza: Dec-19-2022