Pressure pombi weld chitarisiko zvakakosha zvinodiwa

Pamberi pekumanikidzapipelineita iyo nondestructive bvunzo, yekuona yekutarisa weld inspection mutongi inofanirwa kusangana nezvinodiwa.General zvinodiwa kuti pressure pombi weld chitarisiko uye pamusoro kunaka pamusoro welded majoini sezvinotevera: welding inofanira kutarisa chimiro chakanaka, upamhi hwedivi rimwe nerimwe bevel rakaputirwa 2mm zvakakodzera.Fillet weld gumbo kureba kunofanirwa kusangana nezvinodiwa zvekugadzira, iyo nhanho yekutonga yediki fomu chinhu chinofanira kuve chakatsetseka shanduko.

Welded joint surface haibvumiri kuputika, kushaya fusion, porosity, slag, spatter iripo.Pipeline dhizaini tembiricha iri pazasi -29 madhigirii, fan mutongi weakaomeswa simbi isina tsvina uye alloy simbi mapaipi anowanzo kuve akakura weld pamusoro, asina undercut.Pipe weld undercut zvimwe zvinhu zvinofanirwa kunge zvakakura kudarika kudzika kwe 0.5mm, kuenderera mberi undercut kureba hakufanirwe kudarika 100mm, uye mativi ese e weld undercut anokura pagumi muzana yehurefu hwese weld.Weld pamusoro kwete zvishoma pane pombi pamusoro.Weld kusimbisa, Uye kwete kupfuura 3mm, (kusvika pahupamhi hwemajoini e weld pane groove).Welded majoini zvakaipa divi rusvingo ukobvu haafaniri kudarika 10% uye kwete kupfuura 2mm.

Pamusoro pekuedza kusina kuparadza

Pamusoro pekumanikidza pombi NDT nzira yekusarudza musimboti: magineti iron pombi inofanirwa kushandiswa mukuyedzwa kwemagineti;isiri-ferromagnetic simbi inofanirwa kushandiswa mukuyedzwa kwekupinda.Pane tsika yekunonoka kutsemuka kwemajoini akasungwa, iyo yepamusoro inofanirwa kunge isiri-inoparadza bvunzo yekutonhodza mushure mekugadzira imwe nguva;reheat cracking maitiro emajoini akaiswa, iyo yepamusoro inofanirwa kunge iri mukuyedza isingaparadzi uye post-weld kupisa kurapwa kamwe chete.

Ray yekuongorora uye ultrasonic bvunzo

Ray yekuongorora uye ultrasonic bvunzo ndiyo inonyanya kunangwa yebutt joint pressure pombi uye pombi fittings yemabutt joints.NDT nzira dzakasarudzwa nemagwaro ekugadzira.Titanium, aruminiyamu nealuminium alloy, mhangura nemhangura alloys, majoini akasungwa kuona nickel uye nickel alloys, uye anofanirwa kushandiswa munzira dzekuona mwaranzi.Pane tsika yekunonoka kutsemuka kweweld, kuongororwa kwayo kwemwaranzi uye kuongororwa kwe ultrasonic kunofanirwa kunge kuri pane imwe nguva yekutonhodza mushure mekugadzira.Kana musoro wefolda mukati mecasing uine girth weld, iyo weld inofanirwa kunge ichishanda 100% ray yekuona, mashandiro epachivande anogona kuitwa mushure mekupfuura nemuyedzo wekumanikidza.Kusimbisa zvindori kana kutakura ndiro yakafukidzwa ne welded majoini achava 100% pombi-ray kuongorora, pashure kupfuura ipapo akavharwa.Kuongororwa kwezvipikirwa zvepakati seam welding, kusingaparadze kuyedzwa kunofanirwa kuitwa mushure mekupfuura ongororo yekuona, radiography uye ultrasonic kuongororwa kunofanirwa kuitwa mushure meiyo yepamusoro yekusaparadza bvunzo, bvunzo weld seam inogona kuenderera mushure mekuongorora kukodzera.