Nekuvandudzwa kwehupfumi hwenyika, gobvu rusvingo LSAW simbi pombi ari offshore papuratifomu, akadai tembiricha uye yakakwirira kumanikidzwa mudziyo wokumanikidza, mhepo pombi murwi rave zvikuru kushandiswa.Kugadzira rudzi urwu rwepombi yesimbi kunowanzo shandisa D36 simbi, S355 simbi uye iri Z pakuita kwesimbi ndiro chimiro, kukora kweplate, hombe kabhoni yemukati yakakwira, uye iyo yakakwira kabhoni yakaenzana, kusasimba kwesimbi, kuomesa maitiro, kudzikisa kuita kwesimbi. ye welding joint, nyore kugadzira inotonhora mutswe, kunyanya mune mhiri makatsemuka kuoneka mukana mukuru.Mushure mekuputira kuputika, kuwedzera kune anodiwa ekudzora matanho, asi zvakare teerera kune workpiece kugadzirisa nenguva.S355 simbi, semuenzaniso inoonekwa mushure mewelding yakachinjika dhizaini kugadzirisa matanho.Concrete ndeye:

1, simbisa kukanganisa

100% yezvese weld paUT yekuongorora, maka nzvimbo yekutsemuka, kureba, kudzika uye kutungamira.Kana welding mutsara wakanganisa, uye kurudzira kubvarura chinyorwa chose chakadzika arc welding musono, inokurudzirwa yemunharaunda kugadzirisa welding tsvimbo arc welding.

2, ndege isati yatanga kupisa

Preheat tembiricha i110-170 ℃, preheat tembiricha inoona nzvimbo ye weld pamativi ese asiri asingasviki 150 mm, kudziyisa mukati mechikamu chehurema hurefu hwakatenderedza 500 mm.

3, kupisa mhepo

Kuwanda kwemhepo gouging crack defects kumagumo ese kune kunze, yakanaka weld inobuda mhepo inofamba pakati peisingasviki 50 mm, planer slot kumativi ese maviri ekuchinja kwakatsetseka, kutsetseka kwekuchinja kwepamusoro uye mutsara wakatwasuka unodarika 45 °.Air gouging kabhoni tsvimbo inofanirwa kunge iri pasi pe60 ° Angle, ichasvika mukutsemuka, kunyanya muAngle idiki sezvinobvira.

4, kugaya

Kuti pave pasina dema, kupenya mushure mepamusoro kunofanirwa kuve kwakatsetseka shanduko, hakufanirwe kuve negomba rakadzika rakapinza.

5, PT

Mushure mekutonhodzwa kune tembiricha yakakodzera yekupinda kuyedza (PT).

6, kugaya

Pahwaro hweP PT yekuongororwa mhinduro, kukuya, kupukuta kusvika pasina mutsara mutsvuku.

7, MT

Ita mushure mekugaya magineti particle test (MT), ita shuwa kuti hapana chasara kutsemuka, zvikasadaro inofanira kuramba ichikwenenzverwa, kusvika (MT) kuona pakatsemuka.

8, preheating before welding

Inokurudzirwa preheating tembiricha ndeye 110-170 ℃, preheat tembiricha yekuona nzvimbo ye weld pamativi ese asiri asingasviki 150 mm, weld kudziyisa huwandu hwechinhambwe chisingasviki 500 mm.

9, welding

Inoitwa maererano nemirairo yekushanda kwekugadzirisa welding, iyo weld hupamhi haisi kupfuura 15 mm, inogona kupesana nekupesana kwavo.Kana inogona kushandiswa, welding otomatiki yakanyura arc welding process.

10, kuchengetedza kupisa, kunonoka kutonhora mushure mekugadzira

11, kurapwa kwekupisa mushure mekuputika

Kupisa kurapwa mushure mekunama kunonyanya kupararira hydrogen, kuderedza kushushikana kwasara mushure mekuputika, kune yakakura kuomarara weldment ine yakakosha "hydrogen Elimination processing", "kubvisa kushushikana kwekupisa.Sisitimu yekurapa kupisa inokurudzirwa: pakarepo mushure mekupedzwa kwewelding ne ceramic gumbeze remagetsi rinopisa kusvika 200 ℃, kuchengetedza kupisa kunovhara magetsi kunonoka kutonhora mushure memaawa maviri.

12, mushure mekuyedza welding

48 h mushure mekunge welding yapera, NDT bvunzo, zvinoenderana nezvinodiwa kuti usimbise kugadzirisa kwakakodzera.