Ngophuhliso loqoqosho lwesizwe, eludongeni olungqingqwa umbhobho wentsimbi LSAW kwiqonga offshore, ezifana lobushushu eliphezulu kunye noxinzelelo oluphezulu inqanawa yoxinzelelo, imfumba yombhobho womoya iye yasetyenziswa ngokubanzi.Ukuvelisa olu hlobo lombhobho wentsimbi ngokuqhelekileyo kusetyenziswa intsimbi ye-D36, intsimbi ye-S355 kwaye i-Z ekusebenzeni kwesakhiwo sepleyiti yentsimbi, ubukhulu bepleyiti, umxholo wekhabhoni omkhulu uphezulu, kunye nekhabhoni ephezulu elinganayo, i-weldability embi, ukuthambekela kokuqina, ukunciphisa ukusebenza kwe-welding. we welding joint, kulula ukuvelisa crack ebandayo, ingakumbi kwiintanda ezinqamlezayo kubonakala linokuba mkhulu.Emva kokuqhekeka kwe-welding, ngaphezu kwamanyathelo okulawula ayimfuneko, kodwa kwakhona ingqalelo kwi-workpiece ukulungisa ngexesha.Intsimbi ye-S355, umzekelo ovela emva kwe-welding transverse yokulungisa amanyathelo okulungisa ukuqhekeka.Ikhonkrithi yile:

1, qinisekisa isiphene

I-100% yazo zonke i-weld ekuhlolweni kwe-UT, phawula indawo yokuqhekeka, ubude, ubunzulu kunye nolwalathiso.Ukuba umgca wokuwelda uneziphene, kwaye ucebise ukukrazula yonke into entywilayo ye-arc welding seam, ecetyiswayo yendawo yokulungisa intonga ye-arc welding.

2, phambi kokuba inqwelomoya ifudumale

Ubushushu be-Preheat yi-110-170 ℃, ubushushu be-preheat bubona indawo ye-weld kumacala omabini angekho ngaphantsi kwe-150 mm, ukufudumeza ngaphakathi koluhlu lweziphene ezimalunga ne-500 mm.

3, ukukhupha umoya

Ububanzi be-air gouging crack iziphene zozibini iziphelo ukuya ngaphandle, i-weld elungileyo ephumayo yomoya i-gouging phakathi kwe-50 mm, i-planer slot kuzo zombini iziphelo zenguqu egudileyo, inguqu egudileyo kunye nomgca othe nkqo ubuncinane ngaphezu kwe-45 °.I-air gouging carbon rod kufuneka ibe phantsi kwe-60 ° Angle, iya kufika ngokuqhekeka, ngakumbi kwi-Angle encinci kangangoko kunokwenzeka.

4, ukusila

Ukungabi namnyama, ukugulisa emva komphezulu kufuneka kube yinguqu egudileyo, akufanele kube nomngxuma onzulu obukhali.

5, PT

Emva kokuba ipholile ukuya kwiqondo lobushushu elifanelekileyo lovavanyo lwe-penetrant (PT).

6, ukusila

Ngokwesiseko seziphumo zovavanyo lwe-PT, ukugaya, ukupolisha kuze kube kungabikho umgca obomvu.

7, MT

Yenza emva kokusila ukuvavanya i-particle magnetic (MT), qinisekisa ukuba akukho nkunkuma eseleyo, ngaphandle koko kufuneka iqhubeke igudiswa, de kube (MT) ukufumanisa ukuqhekeka.

8, ukufudumeza kwangaphambili ngaphambi kwe-welding

Ubushushu obucetyiswayo bangaphambi kobushushu yi-110-170 ℃, ubushushu be-preheat bubona indawo ye-weld kumacala omabini angekho ngaphantsi kwe-150 mm, uluhlu lokufudumeza kwe-weld kumgama ongaphantsi kwe-500 mm.

9, ukuwelda

Ukwenziwa ngokuhambelana nomyalelo wokusebenza wokulungisa i-welding, ububanzi be-weld abukho ngaphezu kwe-15 mm, banokudibanisa izichasi zabo.Okanye ingasetyenziswa, ukuwelda inkqubo yokuwelda i-arc ngokuzenzekelayo.

I-10, ukugcinwa kobushushu, ukupholisa okucothayo emva kwe-welding

I-11, unyango lobushushu emva kwe-welding

Unyango lobushushu emva kwe-welding ikakhulu i-diffusion hydrogen, ukunciphisa uxinzelelo olushiyekileyo emva kwe-welding, kuba ukuqina kokuqina kwe-weldment kukhethekileyo "i-hydrogen elimination processing", "ukuphelisa uxinzelelo lonyango lobushushu.Inkqubo yonyango lobushushu iyacetyiswa: kwangoko emva kokugqitywa kwe-welding nge-ceramic ingubo yombane ifudunyezwe kwi-200 ℃, ukugcinwa kobushushu kuvaliwe ukupholisa okucothayo kombane emva kweeyure ezi-2.

I-12, emva kovavanyo lwe-welding

I-48 h emva kokuba i-welding igqityiwe, uvavanyo lwe-NDT, ngokuhambelana neemfuno zokuqinisekisa ukulungiswa okufanelekileyo.