Fahamka Muhiimadda Tayada Beebka Gaaska Dabiiciga ah: X42 SSAW Pipe, ASTM A139 iyo EN10219
X42SSAWtuubowaa nooc ka mid ah tuubooyinka gaaska dabiiciga ah ee sida caadiga ah loo isticmaalo warshadaha saliidda iyo gaaska.Waxa lagu soo saaray iyada oo la adeegsanayo habka alxanka arc hoostiisa oo soo saara tuubooyin tayo sare leh oo waara.Tuubada X42 SSAW waxay leedahay awood sare iyo sifooyin kiimiko oo aad u wanaagsan, taasoo ka dhigaysa mid ku habboon shuruudaha baahida gaadiidka gaaska dabiiciga ah.Iska caabbinta aadka u fiican ee daxalka iyo dildilaaca ayaa ka dhigaya doorashada koowaad ee mashaariicda dhismaha dhuumaha.
ASTM A139waa halbeeg kale oo muhiim u ah dhuumaha gaaska dabiiciga ah.Qeexitaanku wuxuu daboolayaa koronto-fudud (arc) welded toosan ama tollayn bir ah oo loo isticmaalo gudbinta gaasaska, uumiga, biyaha iyo dareerayaasha kale.Dhuumaha ASTM A139 waxaa lagu yaqaanaa isku halaynta iyo waxqabadka muddada dheer ee xaaladaha ugu adag ee hawlgalka.Tuubooyinkan waxaa loogu talagalay in ay u adkeystaan cadaadiska sare iyo isbedbeddelka heerkulka, iyaga oo ka dhigaya kuwo ku habboon gudbinta gaaska dabiiciga ah iyo codsiyada qaybinta.
Heerka | Heerka birta | Halabuurka kiimikada | Guryaha xamaasada | Tijaabada Saamaynta Charpy iyo Hoos u Dhigista Imtixaanka Ilmada | |||||||||||
C | Mn | P | S | Ti | Mid kale | CEV4) (%) | Rt0.5 Mpa Xoog dhalid | Xoog Tensile Rm Mpa | A% L0=5.65 √ S0 Kordhinta | ||||||
max | max | max | max | max | max | max | min | max | min | max | |||||
API Spec 5L (PSL2) | B | 0.22 | 1.20 | 0.025 | 0.015 | 0.04 | Dhammaan darajooyinka birta: Ikhtiyaarka ku darida Nb ama V ama isku darka kasta iyaga ka mid ah, laakiin Nb+V+Ti ≤ 0.15%, iyo Nb+V ≤ 0.06% ee fasalka B | 0.25 | 0.43 | 241 | 448 | 414 | 758 | In la xisaabiyo sida uu qabo formula soo socota: e=1944·A0.2/U0.9 J: Iskutallaab bedka muunad ee mm2 U: xoogga ugu yar ee la cayimay Mpa | Waxaa jira imtixaano loo baahan yahay iyo imtixaano ikhtiyaari ah.Faahfaahinta, eeg heerka asalka ah. |
X42 | 0.22 | 1.30 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 290 | 496 | 414 | 758 | ||||
X46 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 317 | 524 | 434 | 758 | ||||
X52 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 359 | 531 | 455 | 758 | ||||
X56 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 386 | 544 | 490 | 758 | ||||
X60 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 414 | 565 | 517 | 758 | ||||
X65 | 0.22 | 1.45 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 448 | 600 | 531 | 758 | ||||
X70 | 0.22 | 1.65 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 483 | 621 | 565 | 758 | ||||
X80 | 0.22 | 1.65 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 552 | 690 | 621 | 827 | ||||
Si Mn+Cu+Cr Ni Maya V 1)CE(Pcm)=C+30+20+60+15+10+58 | |||||||||||||||
Mn Cr+Mo+V Ni+Cu 2)CE(LLW)= C + 6 + 5 + 15 |
EN10219waa halbeeg Yurub ah oo qeexaya shuruudaha gaarsiinta farsamada ee qaybaha qaab dhismeedka alxanka ee qabow-sameeyay ee birta aan daawaha ahayn iyo birta-cagaaran.In kasta oo EN10219 aan si gaar ah loogu tafatirin tuubooyinka gaaska dabiiciga ah, shuruudaheeda adag ee adkeysiga, saxnaanta cabbirka iyo guryaha farsamada ayaa ka dhigaya doorasho ku habboon mashaariicda dhuumaha gaaska qaarkood.Isticmaalka tuubooyinka u hoggaansamaya heerarka EN10219 waxay hagaajin karaan guud ahaan daacadnimada iyo nolosha adeegga nidaamka qaybinta gaaska dabiiciga ah.
Muhiimadda doorashada tuubooyinka gaaska dabiiciga ah ee tayada leh lama soo koobi karo.Tuubooyinka tayadoodu liidato ama tayadoodu liidato waxay keeni karaan khataro laxaad leh deegaanka, badbaadada dadweynaha iyo isku halaynta guud ee saadka gaaska.Sidaa darteed, tamarta gaaska dabiiciga ah, hawl wadeenada dhuumaha iyo maareeyayaasha mashruucu waa inay mudnaanta siiyaan isticmaalka agabka dhuumaha ee la xaqiijiyay oo si wanaagsan loo dhisay sida tuubada X42 SSAW, ASTM A139 iyo EN10219.
Marka la soo koobo,dhuumaha gaaska dabiiciga ahxulashada waa arrin muhiim ah oo ah naqshadeynta iyo dhismaha dhuumaha.Tixgelinta tayada, sida xoogga walxaha, iska caabinta daxalka, iyo u hoggaansanaanta heerarka warshadaha, waa inay dhaqaajiyaan habka go'aan-qaadashada.Iyagoo dooranaya dhuumaha la isku halayn karo iyo kuwa sumcadda leh, sida dhuumaha X42 SSAW, ASTM A139, iyo EN10219, daneeyayaasha waxay hubin karaan jiritaanka iyo badbaadada mustaqbalka fog ee kaabayaasha gaadiidka gaaska dabiiciga ah.
Ugu dambeyntii, waxaa muhiim ah in mudnaanta la siiyo isticmaalka dhuumaha gaaska dabiiciga ah oo tayo sare leh oo buuxiya heerarka warshadaha oo leh qalabka farsamada iyo kiimikada lagama maarmaanka ah.Iyaga oo dooranaya xulashooyin la isku halayn karo sida dhuumaha X42 SSAW, ASTM A139 iyo EN10219, hawl-wadeennada dhuumaha waxay hubin karaan daacadnimada iyo badbaadada muddada dheer ee habab qaybinta gaaska dabiiciga ah.