Njira zonse ziwiri zopangira mapaipi achitsulo okana kugwiritsa ntchito magetsi (ERW) ndi osagwiritsa ntchito magetsi (SMLS) zakhala zikugwiritsidwa ntchito kwa zaka zambiri; pakapita nthawi, njira zomwe zimagwiritsidwa ntchito popanga mapaipi onsewa zapita patsogolo. Ndiye ndi iti yabwino kuposa iyi?
1. Kupanga chitoliro cholumikizidwa
Chitoliro cholumikizidwa chimayamba ngati riboni yayitali, yopota yachitsulo yotchedwa skelp. Chitolirocho chimadulidwa kutalika komwe mukufuna, zomwe zimapangitsa kuti chikhale chozungulira chosalala. M'lifupi mwa malekezero afupi a pepalalo chidzakhala chitoliro chakunja cha chitolirocho, mtengo womwe ungagwiritsidwe ntchito kuwerengera kukula kwake kwakunja.
Mapepala amakona anayi amaperekedwa kudzera mu makina ozungulira omwe amapinda mbali zazitali kuti zigwirizane, ndikupanga silinda. Mu njira ya ERW, magetsi amphamvu amadutsa pakati pa m'mphepete, zomwe zimapangitsa kuti asungunuke ndikugwirizana.
Ubwino wa chitoliro cha ERW ndi wakuti palibe zitsulo zosakanikirana zomwe zimagwiritsidwa ntchito ndipo msoko wa weld sungawonekere kapena kumvedwa. Izi zikusiyana ndi weld ya arc yomwe imayikidwa pansi pamadzi (DSAW), yomwe imasiya mkanda wowonekera bwino womwe uyenera kuchotsedwa kutengera momwe wagwiritsidwira ntchito.
Njira zopangira mapaipi olumikizidwa zapita patsogolo pazaka zambiri. Mwina kupita patsogolo kwakukulu kwakhala kusintha kwa magetsi amphamvu kwambiri kuti agwiritsidwe ntchito kuwotcherera. Zisanafike zaka za m'ma 1970, magetsi otsika kwambiri ankagwiritsidwa ntchito. Ma seams olumikizidwa opangidwa kuchokera ku ERW yochepa anali osavuta kuwononga komanso kulephera kwa msoko.
Mitundu yambiri ya mapaipi olumikizidwa imafuna kutentha pambuyo popangidwa.
2. Kupanga chitoliro chopanda msoko
Mapaipi osasemphana amayamba ngati chidutswa cholimba chachitsulo chotchedwa billet. Pamene chikadali chotentha, ma billet amabowoledwa pakati ndi mandrel. Gawo lotsatira ndikugubuduza ndi kutambasula billet yopanda kanthu. Billet imagubuduzidwa bwino ndikutambasulidwa mpaka itafika kutalika, m'mimba mwake ndi makulidwe a khoma monga momwe kasitomala wanenera.
Mitundu ina ya mapaipi osalumikizana imalimba ikapangidwa, kotero kutentha sikufunikira pambuyo popanga. Ena amafunikira kutentha. Onaninso zomwe zafotokozedwa za mtundu wa mapaipi osalumikizana omwe mukuganizira kuti mudziwe ngati angafunike kutentha.
3. Mawonedwe akale ndi momwe amagwiritsidwira ntchito mapaipi achitsulo olumikizidwa motsutsana ndi opanda msoko
Masiku ano, ERW ndi mapaipi achitsulo chosasunthika zilipo ngati njira zina chifukwa cha malingaliro akale.
Kawirikawiri, chitoliro cholumikizidwa chinkaonedwa kuti n’chofooka chifukwa chinali ndi msoko wolumikizira. Chitoliro chopanda msoko chinalibe vuto la kapangidwe kake ndipo chinkaonedwa kuti n’chotetezeka. Ngakhale kuti n’zoona kuti chitoliro cholumikizidwa chimakhala ndi msoko womwe umapangitsa kuti chikhale chofooka, njira zopangira ndi njira zotsimikizira khalidwe lililonse lakhala likuyenda bwino kwambiri moti chitoliro cholumikizidwacho chimagwira ntchito momwe chikufunira pamene sichinapitirire. Ngakhale ubwino wake ndi woonekeratu, ndemanga ya mapaipi osasunthika ndi yakuti njira yozungulira ndi kutambasula imapanga makulidwe osasinthasintha a khoma poyerekeza ndi makulidwe olondola a mapepala achitsulo omwe amapangidwa kuti azilumikiza.
Miyezo yamakampani yomwe imayang'anira kupanga ndi kutanthauzira kwa ERW ndi chitoliro chachitsulo chosasunthika ikuwonetsabe malingaliro amenewo. Mwachitsanzo, mapaipi osasunthika amafunika pa ntchito zambiri zotentha kwambiri komanso zotentha kwambiri m'mafakitale amafuta ndi gasi, opanga magetsi ndi mankhwala. Mapaipi olumikizidwa (omwe nthawi zambiri amakhala otsika mtengo kupanga ndipo amapezeka kwambiri) amafotokozedwa m'mafakitale onse bola ngati kutentha, kuthamanga ndi zinthu zina zogwirira ntchito sizikupitirira magawo omwe atchulidwa mu muyezo woyenera.
Mu kapangidwe kake, palibe kusiyana pakati pa ERW ndi chitoliro chachitsulo chosasunthika. Ngakhale kuti ziwirizi zitha kufotokozedwa mosiyana, sizingakhale zomveka kufotokoza za chitoliro chosasunthika pamene chitoliro chotchipa cholumikizidwa chimagwira ntchito mofanana.
4. Tiwonetseni tsatanetsatane wanu, pemphani mtengo ndipo mupeze chitoliro chanu mwachangu
Jindalai Steel Group ili ndi zinthu zambiri zogwiritsidwa ntchito popanga mapaipi achitsulo olumikizidwa bwino komanso opanda zingwe m'makampaniwa. Timapeza katundu wathu kuchokera ku mafakitale osiyanasiyana ku China, kuonetsetsa kuti ogula akupeza chitolirocho mwachangu mosasamala kanthu za malamulo aliwonse.
Jindalai angakuthandizeni kudziwa njira yogulira mapaipi kuyambira pachiyambi mpaka kumapeto kuti muwonetsetse kuti mwapeza zomwe mukufuna mwachangu nthawi yoti mugule. Ngati kugula mapaipi kuli posachedwa, pemphani mtengo. Tikukupatsani imodzi yomwe ingakupatseni zinthu zomwe mukufuna mwachangu.
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Nthawi yotumizira: Disembala-19-2022
