Mapaipi Ozungulira Ozungulira Kwa Mipope Yaikulu Yamadzi
Pomanga zomangamanga, zipangizo zomwe zimagwiritsidwa ntchito zimagwira ntchito yofunika kwambiri pa moyo wautali komanso kugwira ntchito kwa polojekitiyi.Chinthu chimodzi chomwe chili chofunikira kwambiri pamakampani opanga zomangamanga ndi chitoliro chozungulira chozungulira.Mapaipiwa amagwiritsidwa ntchito mosiyanasiyana m'njira zosiyanasiyana monga mapaipi amadzi ndi mapaipi a gasi, ndipo mafotokozedwe ake, kuphatikiza mapaipi otchingidwa ndi ma spiral seam, ndi ofunikira kuti awonetsetse kuti akugwira ntchito.Mu blog iyi, tiwona mozama zaspiral welded pipe specificationndi kufunika kwawo pantchito yomanga.
Schitoliro cha piralsamamangidwa pogwiritsa ntchito njira yotchedwa spiral welding process.Njirayi imaphatikizapo kugwiritsa ntchito zitsulo zopindika zotentha kuti zipangidwe kukhala cylindrical, kenako kumangiriza mozungulira msoko.Chotsatira chake ndi chitoliro chokhala ndi mphamvu zambiri komanso kukhazikika, zomwe zimapangitsa kuti zikhale zoyenera pa ntchito zosiyanasiyana.Mapaipi awa amagwiritsa ntchitowelded chubuteknoloji panthawi yomanga, kuonetsetsa kuti ikugonjetsedwa ndi zinthu zosiyanasiyana zachilengedwe ndi zovuta, zomwe zimapangitsa kuti zikhale zoyenera kuti zigwiritsidwe ntchito pansi pa nthaka ndi pansi pa madzi.
Katundu Wakuthupi ndi Wamankhwala Wamapaipi Achitsulo (GB/T3091-2008, GB/T9711-2011 ndi API Spec 5L) | ||||||||||||||
Standard | Kalasi yachitsulo | Zamankhwala (%) | Tensile Property | Charpy (V notch) Impact Test | ||||||||||
c | Mn | p | s | Si | Zina | Yield Strength (Mpa) | Mphamvu Yamphamvu (Mpa) | (L0 = 5.65 √ S0 (mphindi Wotambasula) (%) | ||||||
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 | Kuwonjezera Nb\V\Ti molingana ndi 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 | Posankha kuwonjezera chimodzi mwazinthu za Nb\V\Ti kapena kuphatikiza kulikonse | 175 | 310 | 27 | Chimodzi kapena ziwiri mwazowonetsa mphamvu zamphamvu ndi malo ometa zitha kusankhidwa.Kwa L555, onani muyezo. | ||||
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 | Kwa kalasi B chitsulo, Nb+V ≤ 0.03%; zitsulo ≥ kalasi B, kusankha kuwonjezera Nb kapena V kapena kuphatikiza kwawo, ndi Nb+V+Ti ≤ 0.15% | 172 | 310 | (L0 = 50.8mm) kuti iwerengedwe motsatira ndondomeko iyi: e=1944·A0 .2/U0 .0 A: Dera lachitsanzo mu mm2 U: Mphamvu zochepa zotchulidwa mu Mpa | Palibe kapena chilichonse kapena zonse ziwiri zomwe zimakhudzidwa ndi gawo lometa zomwe zimafunikira ngati muyeso wolimba. | ||||
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 |
Poganizira zofunikira za chitoliro cha spiral seam, ndikofunikira kuyang'ana pazinthu zazikulu monga mainchesi, makulidwe a khoma ndi kalasi yazinthu.Kutalika kwa chitoliro kumatsimikizira kuthekera kwake kunyamula madzi kapena gasi, pomwe makulidwe a khoma amatenga gawo lofunikira pakukhazikika kwake komanso kukana kupanikizika.Kuonjezera apo, kalasi yazinthu imayimira ubwino ndi mawonekedwe a zitsulo zomwe zimagwiritsidwa ntchito ndipo ndizofunikira kwambiri poonetsetsa kuti moyo wautali ndi ntchito ya chitoliro mu ntchito yoperekedwa.
Pakumanga kwamapaipi akuluakulu amadzi, mapaipi ozungulira ozungulira ali ndi maubwino ambiri.Mphamvu zawo zolimba kwambiri komanso kukana kwa dzimbiri zimawapangitsa kukhala abwino kunyamula madzi mtunda wautali, pomwe kusinthasintha kwawo kumalola kukhazikitsa kosavuta kuzungulira zopinga komanso malo ovuta.Kuphatikiza apo, kugwiritsa ntchito mapaipi ozungulira ozungulira m'mapaipi a gasi achilengedwe kumapangitsa kuti gasi aziyenda bwino komanso motetezeka, ndikupereka chithandizo chofunikira kwa magawo okhala, malonda ndi mafakitale.
Kumbali ya zomangamanga, mawonekedwe a chitoliro cha spiral seam amayendetsedwa ndi miyezo ndi malamulo amakampani kuti awonetsetse kuti ntchito yawo ndi yabwino.Mwachitsanzo, American Petroleum Institute (API) yakhazikitsa miyezo yopangira ndi kugwiritsa ntchito chitoliro cha spiral-seam chomwe chimafotokoza zofunikira pakukula, mphamvu, ndi njira zoyesera.Kuphatikiza apo, American Society for Testing and Equipment (ASTM) imapereka mawonekedwe azinthu komanso mawonekedwe amtundu wamakina a mapaipi ozungulira kuti awonetsetse kudalirika kwawo komanso kutsatira miyezo yamakampani.
Mwachidule, mawonekedwe a spiral welded pipe ndi ofunika kwambiri pa ntchito yawo yomanga zomangamanga.Kaya amagwiritsidwa ntchito popangira madzi kapenamizere ya gasi, mapaipiwa amapereka mphamvu zosayerekezeka, kulimba komanso kusinthasintha, zomwe zimapangitsa kuti zikhale zofunikira kwambiri masiku ano.Potsatira miyezo ndi malamulo amakampani, kugwiritsa ntchito mapaipi ozungulira ozungulira kumatsimikizira chitetezo ndi mphamvu zamakina ofunikira, ndikutsegulira njira yachitukuko chokhazikika komanso kupita patsogolo kwa anthu.