1.Zofunikira zofunika pakuwoneka kwa LSAW welds

Asanayambe kuyezetsa kosawononga kwaLSAW mapaipi achitsulo, kuyang'anira maonekedwe a weld kudzakwaniritsa zofunikira. Zomwe zimafunikira pakuwoneka kwa ma welds a LSAW ndi mawonekedwe apamwamba a zolumikizira zowotcherera ndi izi: mawonekedwe a weld ayenera kupangidwa bwino, ndipo m'lifupi mwake kuyenera kukhala 2 mm mbali iliyonse pamphepete mwa poyambira. Kutalika kwa fillet ya fillet weld kudzatsatira malamulo apangidwe ndipo mawonekedwe ake azikhala osalala. Pamwamba pa olowa welded ayenera kukhala:

(1) Ming'alu, osaphatikizidwa, pores, slag inclusions, ndi splashes siziloledwa.

(2) Mipope, zitsulo zosapanga dzimbiri ndi aloyi zitsulo chitoliro weld pamwamba ndi kapangidwe kutentha otsika kuposa -29 madigiri sadzakhala undercuts. Zina zakuthupi chitoliro kuwotcherera msoko pansi kuzama ayenera kukhala wamkulu kuposa 0.5mm, mosalekeza undercut kutalika sayenera kupitirira 100mm, ndipo okwana kutalika kwa undercut mbali zonse za kuwotcherera si oposa 10% ya kutalika kwa kuwotcherera. .

(3) Pamwamba pa weld sidzakhala pansi kuposa pamwamba pa chitoliro. Kutalika kwa mkanda wowotcherera sikupitirira 3mm (kutalika kwakukulu kwa gulu lolumikizirana lolumikizira ku bevel lakumbuyo).

(4) Mbali yolakwika ya cholumikizira cholumikizira sichidzapitilira 10% ya makulidwe a khoma ndipo sichidzapitilira 2 mm.

2.Kuyesa kwapamwamba kosawononga

Mfundo ya njira yosawononga yoyesera pamwamba pa chitoliro chachitsulo cha LSAW: kuyezetsa maginito ufa kuyenera kugwiritsidwa ntchito pa chitoliro chachitsulo cha ferromagnetic; Kuyesa kolowera kuyenera kugwiritsidwa ntchito ngati chitoliro chachitsulo chosakhala ferromagnetic. Kwa zolumikizira zowotcherera zomwe zimakhala ndi chizolowezi chochedwa kusweka, kuyang'ana kopanda kuwonongeka kudzachitika pambuyo poti kuwotcherera kwakhazikika kwa nthawi inayake; kwa zolumikizira zowotcherera zomwe zimakhala ndi chizolowezi chotenthetsanso kung'ung'udza, kuyang'ana kopanda zowononga kudzachitika kamodzi mutatha kuwotcherera komanso mutatha kutentha. Kugwiritsa ntchito kuyezetsa kosawononga padziko lapansi kumachitika molingana ndi zofunikira. Zinthu zozindikiridwa ndi kugwiritsa ntchito nthawi zambiri zimakhala motere:

(1) Kuyang'ana kwapamwamba kwa kunja kwa chitoliro.

(2) Kuzindikira zolakwika zapamtunda za ma welds ofunikira.

(3) Kuyang'ana zolakwika zapamtunda za ma welds ofunika kwambiri.

(4) Kuzindikira kwapang'onopang'ono kwa zolumikizira zowotcherera za socket wofunikira ndi mipope ya nthambi ya jumper tee.

(5) Kuzindikira cholakwika chapamtunda pambuyo popindika chitoliro.

(6) Zinthuzo zimazimitsidwa ndipo poyambira amazindikiridwa ndi cholumikizira chowotcherera.

(7) Kuzindikirika kwa mabelu achitsulo osapanga dzimbiri osapanga austenitic omwe kutentha kwake kumakhala kotsika kapena kofanana ndi madigiri 29 Celsius.

(8) Kuwotcherera mbali ziwiri kumatsimikizira kuwunika kwa mizu mizu ikatsukidwa.

(9) Pamene chowotcherera pa chitoliro cha aloyi chokhala ndi chizolowezi chowumitsa chimadulidwa ndi lawi la oxyacetylene, chilema cha gawo logaya chimadziwika.

3.Kuzindikira kwa radiation ndi kuyesa kwa ultrasonic

Zinthu zazikuluzikulu zozindikiridwa ndi ma radiation ndi kuyezetsa kwa akupanga ndi malo olumikizirana matako a mapaipi achitsulo owongoka komanso olumikizira matako a zida zomata. Njira zoyesera zosawononga zimasankhidwa molingana ndi zolemba zapangidwe. Kuti azindikire zolumikizira zowotcherera za titaniyamu, aluminium ndi ma aloyi a aluminiyamu, ma aloyi amkuwa ndi amkuwa, ma faifi tambala ndi ma nickel alloys, njira yodziwira ma radiation iyenera kugwiritsidwa ntchito. Kwa ma weld omwe amakonda kuchedwetsa kusweka, kuyezetsa kwa ray ndi kuyezetsa akupanga kudzachitika pambuyo poti kuwotcherera kwazirala kwa nthawi inayake. Pamene chitoliro chachikulu mu casing ali ndi girth weld, weld adzakhala opareshoni ndi 100% ray anayendera, ndi ntchito zobisika akhoza kuchitidwa pambuyo kuthamanga mayeso wadutsa. Malumikizidwe otenthetsera papaipi omwe amaphimbidwa ndi mphete yolimbikitsira kapena pad yothandizira ayenera kuyesedwa ndi 100% ndipo adzaphimbidwa atapambana mayeso. Kwa ma welds omwe amaperekedwa kuti ayang'anire zapakatikati pakuwotcherera, kuyezetsa kosawonongeka kudzachitika pambuyo poyang'anitsitsa. Kuyesa kwa radiographic ndi akupanga kudzachitika pambuyo poyesa kosawononga padziko.

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