M'munda wa kubowola mafuta ndi chitsime chamafuta, ma welded casing amagetsi othamanga kwambiri (omwe amatchedwa ERW casing) poyerekeza ndi ma casing opanda msoko ndi olondola kwambiri, kulimba kwa weld, anti-extrusion of high-performance, komanso phindu lotsika mtengo, lomwe yakhala ikugwiritsidwa ntchito kwambiri m’maiko akunja, ndipo yapeza zotulukapo zabwino.

Makhalidwe a ERW casing (poyerekeza ndi casing yopanda msoko)
Kulondola kwapamwamba kwambiri: ERW casing pogwiritsa ntchito makina opangira masanjidwe akamaumbidwa, chosungira cholondola chopanda msoko chawonjezeka kukula kwake (kunja kwake, makulidwe a khoma, kuzungulira, ndi zina zotero), ndipo kupatuka kwake kwakunja sikudutsa ± 0 Average .5%. Zofanana ndi zopangidwa ndi Nippon Steel 6244.5 n'un ERW casing makulidwe amtundu wopatuka wa <0.10 mill molingana ndi kupatuka kwa casing kwanthawi yayitali kunali 0.41 mill.

Kulimba kwa weld wabwino: ERW casing kupanga njira akhoza kutsimikiziridwa kuti C, S ndi P zili ndi otsika mu chigawo gulu ndi m'munsi zinthu zamphamvu kwambiri, mkulu kulimba kwa weld, weld kulimba kulimba manja opanda msoko kotero kuti manja chubu. .

Anti-extrusion katundu wa anti-kugogoda: mphamvu yayikulu 30% mpaka 40% poyerekeza ndi API yofanana ndi casing yopanda phokoso, ERW casing anti-extrusion, anti-kugogoda katundu (kukakamiza kwamkati) pafupifupi 50% pamwamba.

Ukadaulo wapamwamba kwambiri, kuwongolera kwamtundu wazinthu: ERW manja base base zitsulo zowongolera koyilo, isotropic, 100% kuyesa kosawononga.

Mtengo wotsika: poyerekeza ndi chosungira chofanana chofanana, ERW casing 5% mpaka 10% yotsika mtengo, yotsika mtengo, yapamwamba kwambiri ya makina ndi makina, kugwiritsa ntchito mphamvu zochepa ndi kupanga; ERW casing yomaliza yogulitsa katundu wa 93% mpaka 98%, ndi casing yopanda msoko yomaliza ya 85% mpaka 90%; ERW ikuyesa ndalama zonse za projekiti ndi 40% yotsika kuposa pulojekiti yopanda msoko.

Makhalidwe aukadaulo a ERW casing
(1) Kusankhidwa kwa zinthu zopangira kuwongolera koyilo, kuwongolera mosamalitsa zomwe zili mu S ndi P, ndi ofanana ndi mpweya, nthawi zambiri W (S) ≤ 0.015%, wofanana ndi mpweya ≤ O. 25%. Ndipo kugwiritsa ntchito zinthu zazing'ono monga Nb, V, Ti, ndi cu kumathandizira kulimba kwachitsulo kuti zithandizire kuwongolera komanso kukana dzimbiri.

(2) wandiweyani koyilo pambuyo m'mphepete mankhwala mphero, akhoza kuchepetsa kuwotcherera burrs chifukwa kutenthedwa m'deralo ndi makutidwe ndi okosijeni.

(3) Chomwe chimagwiritsidwa ntchito kwambiri ndi spiral looper popanga mosalekeza, palibe kupanga batch-to-volume chifukwa cha kuyimitsidwa kwa kuwotcherera, zomwe zimapangitsa kuyambitsanso kuwotcherera, kuwotcherera pano, kusakhazikika kwamagetsi chifukwa cha zolakwika zamtundu wazinthu.

(4) Zomwe zimagwiritsidwa ntchito kwambiri pochotsa ma hydraulic amtundu wa burrs, casing internal burr height control 1.14 NLNL.

(5) Okhwima kuwotcherera magawo, kuphatikizapo mphamvu athandizira, kuwotcherera V woboola pakati ngodya, liwiro kuwotcherera, kuwotcherera kulamulira kutentha. Kuwotcherera kutentha ndi mkulu-pafupipafupi kuwotcherera liwiro la kutsekedwa kuzungulira mphamvu ulamuliro, kulamulira kusinthasintha zosakwana ± 5 ℃.

(6) Kugogomezera pa chithandizo cha kutentha kwa pambuyo pa weld, kupyolera mu chithandizo cha kutentha kwa pambuyo pa weld kuti apititse patsogolo bungwe ndi kupsinjika kwamkati kwa chigawo cha weld.

(7) Kupanga mphamvu yayikulu komanso kukula kwagawo, kuchepetsa kulondola kwakukulu kumalizidwa.

(8) Pakuti weld ndi zitsulo monga lonse-mzere kapena off-line sanali zowononga kuyezetsa, pa nthawi yake ndi molondola kuzindikira zolakwika, kuti nthawi yake kusintha ndondomeko kupanga kuonetsetsa mankhwala khalidwe.