Ka nts'etsopele ea moruo oa naha, lerako le teteaneng la LSAW phala ea tšepe sethaleng sa offshore, joalo ka mocheso o phahameng le khatello e phahameng ea sekepe sa khatello, qubu ea phala ea moea e sebelisitsoe haholo.Ho hlahisa mofuta ona oa phala ea tšepe hangata ho sebelisoa tšepe ea D36, tšepe ea S355 mme ke Z ho ts'ebetso ea sebopeho sa poleiti ea tšepe, botenya ba poleiti, likahare tse kholo tsa khabone li phahame, 'me k'habone e lekanang le eona, ho se sebetse hantle, ho thatafala, ho theola ts'ebetso ea welding. ea tjheseletsa kopanetsweng, ho le bonolo ho hlahisa batang lepetsong, haholo-holo ka mapetsong a pota-potileng hlaha kgonego ke kholoanyane.Ka mor'a ho cheselletsa ho phunyeha, ho phaella ho mehato e hlokahalang ea ho laola, empa hape u ele hloko workpiece ho lokisa ka nako.S355 tšepe, mohlala, tse hlahang ka mor'a hore ho chesehele mehato ea ho lokisa crack.Konkreite ke:

1, netefatsa sekoli

100% ea li-weld tsohle ha ho hlahlojoa UT, tšoaea sebaka sa ho phatloha, bolelele, botebo le tataiso.Haeba mohala oa tjheseletsa o na le phoso, 'me o fana ka maikutlo a ho tabola sengoloa kaofela se ka tlas'a metsi arc tjheseletsa seam, kgothaletswa sebakeng seo ho lokisoang tjheseletsa molamu arc tjheseletsa.

2, pele sefofane se futhumatsa

Mocheso oa preheat ke 110-170 ℃, mocheso oa preheat o lemoha boemo ba weld mahlakoreng ka bobeli a seng ka tlase ho 150 mm, ho futhumala ka har'a sebaka bakeng sa liphoso tsa sebaka se ka bang 500 mm.

3, ho phunya moea

Bophahamo ba moea gouging Crack bofokoli ka bobeli ho ea kantle, moea o motle oa weld o tsoang pakeng tsa limilimithara tse seng ka tlase ho 50, sekotjana sa planer lipheletsong tse peli bakeng sa phetoho e boreleli, sebaka sa phetoho e boreleli le mohala o otlolohileng bonyane ho feta 45 °.Air gouging carbon rod e lokela ho ba tlas'a 60 ° Angle, e tla fihla e petsohile, haholo-holo ka Angle e nyenyane kamoo ho ka khonehang.

4, ho sila

Ho se be le botšo, ho bentša ka mor'a holim'a metsi ho lokela ho ba phetoho e boreleli, ha hoa lokela ho ba le sekoti se tebileng se bohale.

5, PT

Ka mor'a hore u pholisoe mocheso o loketseng bakeng sa tlhahlobo ea penetrant (PT).

6, ho sila

Motheong oa liphetho tsa tlhahlobo ea PT, ho sila, ho bentša ho fihlela ho se na mohala o mofubelu.

7, MT

Etsa ka mor'a ho grind magnetic particle testing (MT), etsa bonnete ba hore ha ho na lepetso le setseng, ho seng joalo le lokela ho tsoela pele ho belisoa, ho fihlela (MT) ho lemoha ho phatloha.

8, preheating pele tjheseletsa

Mocheso o khothalletsoang oa ho futhumatsa ke 110-170 ℃, boemo ba mocheso oa preheat oa weld mahlakoreng ka bobeli a seng ka tlase ho 150 mm, sebaka sa ho futhumatsa sa weld sebaka se ka tlase ho 500 mm.

9, ho cheselletsa

E etsoa ho ea ka taelo ea ts'ebetso ea ho lokisa tjheseletsa, bophara ba weld ha bo fete 15 mm, bo ka senya bahanyetsi ba bona.Kapa e ka sebelisoa, ts'ebetso ea welding ea arc e kenelletseng ka metsing.

10, ho boloka mocheso, ho pholile butle ka mor'a ho cheselletsa

11, kalafo mocheso ka mor'a hore tjheseletsa

Phekolo ea mocheso ka mor'a ho cheselletsa haholo-holo ke ho hasana ha haedrojene, ho fokotsa khatello ea kelello e setseng ka mor'a ho tjheseletsa, bakeng sa ho tiea ho hoholo ho na le "hydrogen elimination processing", "ho felisa khatello ea kelello ea mocheso."Mokhoa oa ho phekola mocheso o khothaletsoa: hang ka mor'a ho qeta ho tjheseletsa ka kobo ea motlakase ea ceramic e futhumatsoa ho 200 ℃, ho boloka mocheso ho koala mocheso o liehang oa motlakase ka mor'a lihora tse 2.

12, kamora tlhahlobo ea welding

Lihora tse 48 ka mor'a hore welding e phethe, tlhahlobo ea NDT, ho latela litlhoko tsa ho netefatsa tokiso e tšoanelehang.