Na mmepe nke mba aku na uba, oké mgbidi LSAW ígwè ọkpọkọ na offshore ikpo okwu, dị ka elu okpomọkụ na elu mgbali nke nrụgide arịa, ifufe pipe ikpo ka etinyere n'ọtụtụ ebe.Imepụta ụdị ọkpọkọ ígwè a n'ozuzu na-eji D36 ígwè, S355 ígwè na bụ Z ka arụmọrụ nke ígwè efere Ọdịdị, efere ọkpụrụkpụ, ibu carbon ọdịnaya bụ elu, na elu carbon Ẹkot, ogbenye weldability, hardening ọchịchọ, belata ịgbado ọkụ arụmọrụ. nke ịgbado ọkụ nkwonkwo, mfe na-emepụta oyi mgbape, karịsịa na transverse cracks egosi ihe gbasara nke puru omume bụ ibu.Mgbe ịgbado ọkụ cracking, na mgbakwunye na nke dị mkpa akara jikoro, ma ntị na workpiece ịrụkwa na oge.S355 ígwè, ihe atụ na-egosi mgbe ịgbado ọkụ transverse mgbape mmezi jikoro.Concrete bụ:

1, kwado ntụpọ ahụ

100% nke weld niile na nyocha UT, kaa akara ebe mgbape, ogologo, omimi na ntụzịaka.Ọ bụrụ na ịgbado ọkụ akara bụ flawed, na-atụ aro tearing dum isiokwu submerged arc ịgbado ọkụ onuete, na-atụ aro mpaghara mmezi ịgbado ọkụ mkpanaka aak ịgbado ọkụ.

2, tupu ụgbọ elu preheating

Preheat okpomọkụ bụ 110-170 ℃, preheat okpomọkụ ịchọpụta ọnọdụ nke weld n'akụkụ abụọ nke ọ bụghị ihe na-erughị 150 mm, kpo oku n'ime nso maka anya ntụpọ gburugburu 500 mm.

3, ikuku ikuku

Oke ikuku gouging mgbape ntụpọ ma na-ejedebe n'èzí, ezi weld oku ikuku gouging n'etiti bụghị ihe na-erughị 50 mm, planer oghere na ma nsọtụ maka ire ụtọ mgbanwe, ezigbo mgbanwe elu na vetikal akara dịkarịa ala karịa 45 Celsius.Ikuku ikuku carbon mkpanaka kwesịrị ịdị n'okpuru 60 Celsius Angle, ga-abata na mgbape, karịsịa na Angle dị obere ka o kwere mee.

4, na-egweri

Ka enweghị oji, polishing mgbe elu kwesịrị ịbụ ezigbo mgbanwe, ekwesịghị inwe olulu miri emi dị nkọ.

5, PT

Mgbe mma ka ọ dị mma maka ule penetrant (PT).

6, na-egweri

Na ndabere nke PT ule results, egweri, polishing ruo mgbe ọ dịghị red akara.

7, MT

Mechaa nyocha ihe ndọta magnetik (MT), jide n'aka na ọ nweghị mgbape fọdụrụnụ, ma ọ bụghị ya ga-aga n'ihu na-egbuke egbuke, ruo mgbe (MT) iji chọpụta mgbape ahụ.

8, preheating tupu ịgbado ọkụ

Na-atụ aro preheating okpomọkụ bụ 110-170 ℃, preheat okpomọkụ ịchọpụta ọnọdụ nke weld n'akụkụ abụọ nke ọ bụghị ihe na-erughị 150 mm, weld kpo oku nso n'ihi na anya na-erughị 500 mm.

9, ịgbado ọkụ

E mere dị ka ọrụ ntụziaka nke mmezi ịgbado ọkụ, na weld obosara bụ ihe karịrị 15 mm, nwere ike wend ha megidere.Ma ọ bụ enwere ike iji ya, ịgbado ọkụ akpaka submerged arc ịgbado ọkụ usoro.

10, okpomọkụ nchekwa, nwayọọ jụrụ mgbe ịgbado ọkụ

11, okpomọkụ ọgwụgwọ mgbe ịgbado ọkụ

Okpomọkụ ọgwụgwọ mgbe ịgbado ọkụ bụ tumadi diffusion hydrogen, iji belata fọdụrụ nchegbu mgbe ịgbado ọkụ, n'ihi na ibu stiffness weldment nwere pụrụ iche "hydrogen mkpochapụ nhazi", "iwepụ nchegbu nke okpomọkụ ọgwụgwọ.A na-atụ aro usoro ọgwụgwọ okpomọkụ: ozugbo emechara ịgbado ọkụ na blanketị eletrik na-ekpo ọkụ na 200 ℃, nchekwa ọkụ na-emechi ọkụ eletrik nwayọ nwayọ mgbe awa 2 gachara.

12, mgbe ule ịgbado ọkụ

48h mgbe ịgbado ọkụ zuru ezu, NDT ule, dị ka chọrọ iji gosi ruru eru mmezi.