Faa'iidooyinka A252 Fasalka 3 Tuubooyinka Birta ee Loo Isticmaalo Dhisidda Dhuumaha Biyaha iyo Tuubooyinka Shidaalka
Mid ka mid ah faa'iidooyinka muhiimka ah eeA252 Fasalka 3 tuubo bir ah waa xooggeeda gaarka ah iyo cimri dhererkeeda.Tuubooyinkani waxay ka samaysan yihiin bir tayo sare leh waxayna aad ugu adkaysanayaan daxalka, xidhashada iyo saamaynta.Tani waxay ka dhigeysaa mid ku habboon in loo isticmaalo tuubooyinka bulaacada halkaasoo laga yaabo inay la kulmaan walxaha daxalka ah iyo culeysyo culus.Intaa waxaa dheer, xooggooda iyo cimrigooda ayaa ka dhigaya kuwo ku habboon in loo isticmaalo dhismaha dhuumaha saliidda, maadaama ay tahay inay u adkeystaan cadaadiska sare iyo isbeddelka xaaladaha deegaanka.
Heerka | Heerka Birta | Qaybaha Kiimikada (%) | Hanti Jilicsan | Charpy(V darajo) Tijaabada Saamaynta | ||||||||||
c | Mn | p | s | Si | Mid kale | Xoogga Wax-soo-saarka(Mpa) | Xoogga Jilicsan(Mpa) | (L0=5.65 √ S0) Daqadda fiditaanka (%) | ||||||
max | max | max | max | max | min | max | min | max | D ≤ 168.33mm | D > 168.3mm | ||||
GB/T3091 -2008 | Q215A | ≤ 0.15 | 0.25 | 1.20 | 0.045 | 0.050 | 0.35 | Ku darida NbVTi si waafaqsan GB/T1591-94 | 215 | 335 | 15 | > 31 | |||
Q215B | ≤ 0.15 | 0.25-0.55 | 0.045 | 0.045 | 0.035 | 215 | 335 | 15 | > 31 | |||||
Q235A | ≤ 0.22 | 0.30 0.65 | 0.045 | 0.050 | 0.035 | 235 | 375 | 15 | >26 | |||||
Q235B | ≤ 0.20 | 0.30 ≤ 1.80 | 0.045 | 0.045 | 0.035 | 235 | 375 | 15 | >26 | |||||
Q295A | 0.16 | 0.80-1.50 | 0.045 | 0.045 | 0.55 | 295 | 390 | 13 | >23 | |||||
Q295B | 0.16 | 0.80-1.50 | 0.045 | 0.040 | 0.55 | 295 | 390 | 13 | >23 | |||||
Q345A | 0.20 | 1.00-1.60 | 0.045 | 0.045 | 0.55 | 345 | 510 | 13 | >21 | |||||
Q345B | 0.20 | 1.00-1.60 | 0.045 | 0.040 | 0.55 | 345 | 510 | 13 | >21 | |||||
GB/ T9711- 2011 (PSL1) | L175 | 0.21 | 0.60 | 0.030 | 0.030 |
Ikhtiyaar ku dara mid ka mid ah walxaha NbVTi ama isku darka kasta oo iyaga ka mid ah | 175 | 310 | 27 | Hal ama laba ka mid ah tusmada adkaanta Saamaynta tamarta iyo aagga dhogorta ayaa la dooran karaa.Waayo L555, eeg heerka. | ||||
L210 | 0.22 | 0.90 | 0.030 | 0.030 | 210 | 335 | 25 | |||||||
L245 | 0.26 | 1.20 | 0.030 | 0.030 | 245 | 415 | 21 | |||||||
L290 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 415 | 21 | |||||||
L320 | 0.26 | 1.40 | 0.030 | 0.030 | 320 | 435 | 20 | |||||||
L360 | 0.26 | 1.40 | 0.030 | 0.030 | 360 | 460 | 19 | |||||||
L390 | 0.26 | 1.40 | 0.030 | 0.030 | 390 | 390 | 18 | |||||||
L415 | 0.26 | 1.40 | 0.030 | 0.030 | 415 | 520 | 17 | |||||||
L450 | 0.26 | 1.45 | 0.030 | 0.030 | 450 | 535 | 17 | |||||||
L485 | 0.26 | 1.65 | 0.030 | 0.030 | 485 | 570 | 16 | |||||||
API 5L (PSL 1) | A25 | 0.21 | 0.60 | 0.030 | 0.030 | Sida birta darajada B, Nb+V ≤ 0.03%; birta ≥ fasalka B, ku darista ikhtiyaari Nb ama V ama kooda isku darka, iyo Nb+V+Ti ≤ 0.15% | 172 | 310 | (L0=50.8mm) inuu ahaado loo xisaabiyaa si waafaqsan qaacidada soo socota: e=1944·A0 .2/U0 .0 A: Aagga muunada ee mm2 U: Xoogga ugu yar ee la cayimay ee Mpa | Midna ama midna ama labadaba saamaynta tamarta iyo xiirid aagga ayaa loo baahan yahay sida heerka adag. | ||||
A | 0.22 | 0.90 | 0.030 | 0.030 | 207 | 331 | ||||||||
B | 0.26 | 1.20 | 0.030 | 0.030 | 241 | 414 | ||||||||
X42 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 414 | ||||||||
X46 | 0.26 | 1.40 | 0.030 | 0.030 | 317 | 434 | ||||||||
X52 | 0.26 | 1.40 | 0.030 | 0.030 | 359 | 455 | ||||||||
X56 | 0.26 | 1.40 | 0.030 | 0.030 | 386 | 490 | ||||||||
X60 | 0.26 | 1.40 | 0.030 | 0.030 | 414 | 517 | ||||||||
X65 | 0.26 | 1.45 | 0.030 | 0.030 | 448 | 531 | ||||||||
X70 | 0.26 | 1.65 | 0.030 | 0.030 | 483 | 565 |
Faa'iidada kale ee A252 Fasalka 3 dhuumaha birta ah waa kala duwanaanshaheeda.Tuubooyinkan ayaa lagu heli karaa cabbirro iyo dhumucyo kala duwan, taasoo ka dhigaysa inay ku habboon yihiin codsiyo kala duwan.Haddii wax yar la dhisokhadka bullaacadahaama xariiqda dhuumaha saliidda weyn, A252 Fasalka 3 tuubooyinka birta si fudud ayaa loo habeyn karaa si loo buuxiyo shuruudaha mashruuca ee gaarka ah.Intaa waxaa dheer, tuubooyinkan ayaa laga samayn karaatuubooyinka qaab-dhismeedka qayb-madhan, iyagoo sii ballaarinaya isticmaalkooda mashaariicda dhismaha.
Marka lagu daro xooggeeda iyo isku-dheellitirnaanteeda, A252 Fasalka 3 tuubooyinka birta ayaa sidoo kale caan ku ah waxtarkeeda.Tuubooyinkani waa sahlan yihiin in la rakibo waxayna u baahan yihiin dayactir yar, taas oo yaraynaysa kharashka guud ee mashruuca.Intaa waxaa dheer, adeeggooda dheer iyo iska caabbinta daxalka waxay xaqiijinayaan inay si xooggan u soo celinayaan maalgashiga bullaacadaha iyodhuumaha saliidda linemashaariicda dhismaha.
Faa'iidada kale ee muhiimka ah ee A252 Fasalka 3 birta birta ah waa waafaqsanaanta hababka dhismaha ee kala duwan.Tuubooyinkan waxaa lagu rakibi karaa iyadoo la adeegsanayo hababka qodista dhaqameed ama farsamooyin aan qodnayn sida qodista jihada toosan, tuubooyinka jeebka ama tunnel-yar yar.Dabacsanaantani waxay u oggolaanaysaa in si hufan oo kharash-ku-ool ah loo rakibo jawiyo adag oo kala duwan, oo ay ku jiraan meelaha magaalooyinka, marin-biyoodka iyo meelaha xasaasiga ah ee deegaanka.
Guud ahaan, A252 Fasalka 3 tuubooyinka birta waxay bixisaa faa'iidooyin kala duwan oo loogu talagalay dhismaha dhuumaha bulaacada iyo batroolka.Xooggooda, adkeysigooda, wax-ku-oolnimadooda iyo kharash-ku-oolnimadooda ayaa ka dhigaya kuwo ku habboon codsiyadan baahida badan.Haddii loo isticmaalo dhismaha tuubooyinka bulaacada ama saliidda, tuubooyinkani waxay bixiyaan waxqabad la isku halayn karo iyo qiimo wakhti dheer ah.Natiijo ahaan, waxay ahaanayaan xalka doorashada injineerada iyo qandaraaslayaasha raadinaya xalal waara oo la isku halayn karo.