Kauv Submerged Arc Welded Pipes Rau Kev Lag Luam Niaj Hnub No
Qhov zoo ntawm kauv submerged arc welded yeeb nkab:
1. Kev tsim kho kom zoo:
SSAW cov kav dej muaj cov khoom siv sib txuas uas tso cai rau kev tsim khoom thiab txo lub sijhawm tsim khoom.Cov yam ntxwv tshwj xeeb no ua rau nws xaiv thawj zaug rau kev tsim kho loj xws li roj thiabcev gas, dej xa hluav taws xob, thiab offshore drilling platforms.Cov txheej txheem txuas txuas txuas ntxiv ua kom muaj kev ntseeg siab ntawm cov txheej txheem, ua kom cov kav ntev thiab kev pab cuam lub neej ntawm cov yeeb nkab.
| Txuj | Qib hlau | Tshuaj muaj pes tsawg leeg | Tensile zog | Charpy Impact Test thiab Drop Weight Tear Test | ||||||||||||||
| C | Si | Mn | P | S | V | Nb | Ti | CEV 4 (%) | Rt0.5 Mpa Yield zog | Rm Mpa Tensile zog | Rt 0.5 / Ib | （L0 = 5.65 √ S0 ） Ntev A% | ||||||
| max | max | max | max | max | max | max | max | Lwm yam | max | min | max | min | max | max | min | |||
| L245 MB | 0.22 | 0.45 ib | 1.2 | 0.025 ib | 0.15 | 0.05 Nws | 0.05 Nws | 0.04 ib | 1) | 0.4 | 245 | 450 | 415 | 760 ib | 0.93 ua | 22 | Charpy impact test: Impact absorbing zog ntawm cov yeeb nkab lub cev thiab weld seam yuav tsum tau sim raws li qhov yuav tsum tau ua nyob rau hauv thawj tus qauv.Yog xav paub ntxiv, saib tus qauv qub.Tee hnyav kua muag kuaj: xaiv qhov chaw shearing | |
| GB/T9711-2011 (PSL2) | L290 MB | 0.22 | 0.45 ib | 1.3 | 0.025 ib | 0.015 ib | 0.05 Nws | 0.05 Nws | 0.04 ib | 1) | 0.4 | 290 | 495 ib | 415 | 21 | |||
| L320 MB | 0.22 | 0.45 ib | 1.3 | 0.025 ib | 0.015 ib | 0.05 Nws | 0.05 Nws | 0.04 ib | 1) | 0.41 ib | 320 | 500 | 430 | 21 | ||||
| L360 MB | 0.22 | 0.45 ib | 1.4 | 0.025 ib | 0.015 ib | 1) | 0.41 ib | 360 | 530 | 460 | 20 | |||||||
| L390 MB | 0.22 | 0.45 ib | 1.4 | 0.025 ib | 0.15 | 1) | 0.41 ib | 390 | 545 ib | 490 ib | 20 | |||||||
| L415 MB | 0.12 | 0.45 ib | 1.6 | 0.025 ib | 0.015 ib | 1) 2) 3 | 0.42 ib | 415 | 565 ib | 520 | 18 | |||||||
| L450 MB | 0.12 | 0.45 ib | 1.6 | 0.025 ib | 0.015 ib | 1) 2) 3 | 0.43 ib | 450 | 600 | 535 ib | 18 | |||||||
| L485 MB | 0.12 | 0.45 ib | 1.7 | 0.025 ib | 0.015 ib | 1) 2) 3 | 0.43 ib | 485 ib | 6 35 | 570 ib | 18 | |||||||
| L555 MB | 0.12 | 0.45 ib | 1.85 ib | 0.025 ib | 0.015 ib | 1) 2) 3 | Kev sib tham | 555 | 705 ib | 625 | 825 ib | 0.95 ib | 18 | |||||
2. Zoo heev lub zog thiab yooj:
Lub kauv qauv ntawm SSAW yeeb nkab nce nws lub zog, tso cai rau nws los tiv thaiv sab nraud thiab sab hauv.Cov kav dej no muaj peev xwm tiv taus huab cua huab cua, ua rau lawv haum rau saum toj thiab hauv qab daim ntaub ntawv.Tsis tas li ntawd, qhov yooj yim ntawm SSAW kav dej tso cai rau lawv hloov tau yooj yim thiab nruab rau hauv ntau hom av, nrog rau cov av ntxhib thiab cov av tsis ruaj khov.
3. Kev daws teeb meem raug nqi:
Cov txheej txheem welding tsis tu ncua ua kom cov khoom tsim tau zoo thaum txo cov vuam tsis xws thiab cov nqi.Tsis tas li ntawd, spiral submerged arc welded kav muaj lub zog zoo dua thiab ua haujlwm ntev, txo cov nqi kho thiab kho lawv lub neej, ua rau lawv xaiv kev lag luam.
Cov kev sib tw ntsib los ntawm kauv submerged arc welded kav:
1. Kev tswj kom zoo:
Vim hais tias ntawm cov txheej txheem vuam txoj kev koom tes hauv kev tsim cov kauv submerged arc welded kav, kom ntseeg tau zoo ib yam yog qhov nyuaj.Yog tias qhov ntsuas vuam tsis raug tswj xyuas kom raug, vuam tsis xws li kev txiav, qhov pores, thiab tsis muaj fusion yuav tshwm sim.Txhawm rau kov yeej qhov kev sib tw no, kev tswj xyuas nruj nruj thiab kev soj ntsuam zoo siab thaum lub sijhawm tsim khoom yog qhov tseem ceeb.
2. Txoj kab uas hla kev txwv ntau yam:
Thaum muab kauv submerged arc welded kav yog qhov zoo tagnrho rau kev siv txoj kab uas hla loj, lawv yuav tsis haum rau kev lag luam uas xav tau cov yeeb nkab me me.Cov txheej txheem tsim khoom siv tau zoo dua rau cov kav dej loj dua, ua rau muaj kev txwv tsis pub muaj rau cov haujlwm me xws li cov kav dej hauv tsev thiab kev siv me me.Rau cov kev xav tau zoo li no, lwm txoj kev tsim cov yeeb nkab yuav tsum tau xav txog.
3. Txheej txheej:
Lwm qhov kev sib tw ntsib SSAW yeeb nkab kev lag luam yog kom ntseeg tau tias tsim nyog thiab ruaj khov txheej txheej los tiv thaiv corrosion thiab hnav.Daim ntawv thov txheej rau ntawm qhov chaw muab kauv yuav tsum muaj cov cuab yeej siv siab heev thiab kev txawj ntse los xyuas kom meej tias kev npog thiab adhesion.Cov txheej txheej zoo yog qhov tseem ceeb rau kev txuas ntxiv lub neej kev pabcuam ntawm kauv submerged arc welded yeeb nkab, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig hnyav.
Hauv kev xaus:
Kauv submerged arc welded kav cov kav dej tau ua pov thawj tias yog cov cuab yeej siv tau zoo hauv kev lag luam niaj hnub, muab kev ua tau zoo, lub zog thiab kev ua haujlwm zoo.Nws qhov tshwj xeeb kauv weld seam tso cai rau kev tsim khoom thiab ua kom muaj zog, ua rau nws tsim nyog rau kev tsim kho loj.Txawm li cas los xij, kom muaj kev vam meej txuas ntxiv thiab nthuav dav ntawm kev tsim cov thev naus laus zis no, cov kev cov nyom xws li kev tswj xyuas kom zoo, kev txwv txoj kab uas hla, thiab cov txheej txheej saum npoo yuav tsum tau hais.Los ntawm kev kov yeej cov kev cov nyom no los ntawm kev txhim kho thev naus laus zis thiab kev sib koom tes hauv kev lag luam, kauv submerged arc welded yeeb nkab muaj kev cog lus yav tom ntej hauv kev hloov pauv thiab txhawb nqa cov txheej txheem tseem ceeb thoob ntiaj teb.
