Ndi chitukuko cha chuma cha dziko, wandiweyani khoma LSAW zitsulo chitoliro mu nsanja offshore, monga kutentha ndi kuthamanga kwa chotengera kuthamanga, mphepo chitoliro mulu wakhala ankagwiritsa ntchito.Kupanga mtundu uwu wa chitoliro zitsulo zambiri ntchito D36 zitsulo, S355 zitsulo ndi Z kuti ntchito ya kapangidwe zitsulo mbale, mbale makulidwe, lalikulu mpweya zili apamwamba, ndi mkulu ofanana mpweya, osauka weldability, kuumitsa chizolowezi, kuchepetsa kuwotcherera ntchito. wa kuwotcherera olowa, zosavuta kubala ozizira mng'alu, makamaka yopingasa ming'alu kuoneka Mwina ndi lalikulu.Pambuyo kuwotcherera akulimbana, kuwonjezera pa zofunika kulamulira miyeso, komanso kulabadira workpiece kukonza mu nthawi.S355 chitsulo, mwachitsanzo amene amaoneka pambuyo kuwotcherera yopingasa miyeso kukonza mng'alu.Konkire ndi:

1, kutsimikizira cholakwikacho

100% yazowotcherera zonse pakuwunika kwa UT, lembani komwe mng'alu, kutalika, kuya ndi mayendedwe.Ngati chingwe chowotcherera chili cholakwika, ndikupangira kung'amba nkhani yonse yomwe ili pansi pamadzi arc kuwotcherera, tikulimbikitsidwa kuwongolera ndodo ya arc.

2, ndege isanayambe kutentha

Kutentha kwa Preheat ndi 110-170 ℃, kutentha kwa preheat kumazindikira malo a weld mbali zonse zosachepera 150 mm, Kutenthetsa mkati mwaotalikirana ndi zolakwika zozungulira 500 mm.

3, kuwotcha mpweya

Kuchuluka kwa mpweya gouging mng'alu zopindika malekezero onse kunja, wabwino weld wotuluka mpweya gouging pakati osachepera 50 mm, planer kagawo pa malekezero onse kwa kusintha yosalala, yosalala kusintha pamwamba ndi ofukula mzere osachepera 45 °.Air gouging carbon ndodo iyenera kukhala pansi pa 60 ° Engle, idzafika mosweka, makamaka mu Angle yaying'ono momwe mungathere.

4, kugaya

Kukhala wopanda wakuda, kupukuta pambuyo pamwamba ayenera kukhala yosalala kusintha, sayenera lakuthwa dzenje lakuya.

5, PT

Pambuyo utakhazikika kutentha kwabwino kwa penetrant kuyezetsa (PT).

6, kugwa

Pamaziko a PT kuyezetsa zotsatira, akupera, kupukuta mpaka palibe wofiira mzere.

7, mt

Kodi pambuyo pogaya maginito tinthu kuyezetsa (MT), onetsetsani kuti palibe mng'alu yotsalira, mwinamwake ayenera kupitiriza opukutidwa, mpaka (MT) kuti azindikire mng'alu.

8, preheating pamaso kuwotcherera

Analimbikitsa preheating kutentha ndi 110-170 ℃, kutentha preheat kudziwa malo a weld mbali zonse zosachepera 150 mm, kuwotcherera Kutentha osiyanasiyana mtunda wosakwana 500 mm.

9, kuwotcherera

Ikuchitika motsatira malangizo ntchito kukonza kuwotcherera, kuwotcherera m'lifupi zosaposa 15 mm, akhoza wend zotsutsana zawo.Kapena angagwiritsidwe ntchito, kuwotcherera basi kumizidwa arc kuwotcherera ndondomeko.

10, kuteteza kutentha, kuzizira pang'onopang'ono pambuyo kuwotcherera

11, kutentha mankhwala pambuyo kuwotcherera

Kutentha mankhwala pambuyo kuwotcherera makamaka kufalitsa wa hydrogen, kuchepetsa nkhawa yotsalira pambuyo kuwotcherera, chifukwa chachikulu stiffness weldment ndi wapadera "hydrogen kuchotsa processing", "kuthetsa nkhawa mankhwala kutentha.Njira yochizira kutentha ikulimbikitsidwa: mukangomaliza kuwotcherera ndi bulangeti yamagetsi ya ceramic imatenthedwa mpaka 200 ℃, kuteteza kutentha kumatseka kuzirala kwapang'onopang'ono pambuyo pa 2 h.

12, pambuyo kuwotcherera mayeso

48h pambuyo kuwotcherera watha, NDT mayeso, malinga ndi zofunika kutsimikizira kukonza oyenerera.