Kauv welded kav rau Underground Natural Gas Kab
Kauv welded kavyog qhov tseem ceeb hauv kev lag luam, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov roj thiab cov kav xa hluav taws xob.Lawv cov lus qhia tshwj xeeb tau nthuav tawm nyob rau hauv txoj kab uas hla thiab phab ntsa tuab, ua kom pom tias lawv muaj peev xwm thiab hloov tau mus rau ntau yam kev xav tau ntawm cov kav dej.
| 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 | |||||
| Nco tseg: | ||||||||||||||||||
| 1) 0.015 ≤ Altot ＜ 0.060；N ≤ 0.012； AI—N ≥ 2—1；Cu ≤ 0.25； Ni ≤ 0.30； Cr ≤ 0.30； Mo ≤ 0.10 | ||||||||||||||||||
| 2) V+Nb+Ti ≤ 0.015% | ||||||||||||||||||
| 3) Rau txhua qib steel, Mo yuav ≤ 0.35%, raws li daim ntawv cog lus. | ||||||||||||||||||
| 4) CEV=C+ Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/5 | ||||||||||||||||||
Cov txheej txheem tsim khoom ntawm kauv welded yeeb nkab suav nrog kev siv cov yeeb nkab vuam thev naus laus zis, tsim cov kav ib leeg lossis ob sab welded kav.Cov txheej txheem vuam no ua kom muaj qhov siab tshaj plaws thiab kev ntseeg siab ntawm cov kav dej, muaj peev xwm tiv taus qhov nruj ntawmunderground natural gas kabkis tau tus mob.
Ntawm peb qhov chaw tsim khoom, peb lav tias peb cov kav dej kauv welded tau txais kev soj ntsuam nruj nruj kom ntseeg tau tias lawv cov qauv kev ua tau zoo.Nws yog ib qho tseem ceeb uas welded yeeb nkab ua tau raws li cov kev cai rau kev sim hydraulic, tensile zog thiab txias dabtsi yog khoov zog.
Peb cov kav welded kauv yog tsim los kom dhau cov qauv kev lag luam thiab ua tau raws li cov kev cai nruj tshaj plaws ntawm cov kab hluav taws xob hauv av hauv av.Lawv tau tsim los tiv thaiv ntau yam ntawm ib puag ncig, kom ntseeg tau lub sijhawm ntev thiab kev nyab xeeb hauv txhua daim ntawv thov.
Daim ntawv thov ntawm kauv welded kav nyob rau hauv underground natural gas kab tsheb thauj mus los muab ib tug zoo thiab npaum txoj kev ntawm natural gas tsheb thauj mus los.Lub hauv paus ruaj khov ntawm kauv-welded kev tsim kho kom ntseeg tau tias cov roj xa tuaj thiab txo qhov kev pheej hmoo ntawm kev xau lossis xeb thaum lub sijhawm, muab kev thaj yeeb nyab xeeb rau cov neeg siv khoom thiab cov neeg siv kawg.
Peb tau cog lus los muab peb cov neeg siv khoom nrog cov khoom zoo tshaj plaws, thiab peb cov kav dej welded yog ib qho pov thawj rau peb txoj kev cog lus rau kev lag luam zoo.Peb ua qhov tseem ceeb ntawm kev ua haujlwm ntev, kev ua tau zoo thiab kev nyab xeeb ntawm peb cov khoom, kom ntseeg tau tias lawv ua tau raws thiab dhau qhov kev xav tau nruj ntawm cov kab hluav taws xob hauv av hauv av.
Hauv cov ntsiab lus, peb cov kav welded kauv yog ib qho tseem ceeb hauv kev tsim kho thiab kev saib xyuas cov kab hluav taws xob hauv av hauv av.Nrog nws cov kev tsim kho zoo tshaj plaws, ua raws li cov qauv kev lag luam, thiab kev cog lus tsis sib haum xeeb rau qhov zoo, peb cov kav dej welded yog qhov zoo tagnrho rau txhua qhov project kis tau tus mob.Koom tes nrog peb los muab cov zoo tshaj plaws kauv welded yeeb nkab rau koj underground natural gas pipeline xa mus xav tau.
