Mtundu E chitsulo chitoliroamapangidwa molingana ndiChithunzi cha ASTM A53ndipo amapangidwa pogwiritsa ntchito Electric-Resistance-Welding (ERW) ndondomeko.
Chitolirochi chimagwiritsidwa ntchito makamaka pamakina ndi kukakamiza koma ndi yoyenera kugwiritsidwa ntchito ngati mapaipi wamba potengera nthunzi, madzi, gasi, ndi mpweya.
Mitundu ya Chitoliro cha ASTM A53
Pali mitundu itatu:Type F, Type E, ndi Type S.
Pakati pawo, chitoliro chachitsulo cha Type E chimapangidwa ndi njira ya ERW.
Ngati mukufuna kudziwa zambiri zaChithunzi cha ASTM A53, mukhoza dinani apa.
Gulu la Maphunziro
Mtundu E uli ndi magiredi awiri: Gulu A ndiGulu B.
Size Range
Kukula kwake kwaASYM A53 ndi DN 6-650.
Kupanga osiyanasiyanaMtundu E ndi DN 20-650 DN.
Miyezo ya mapaipi pansi pa DN 20 ndi yaying'ono kwambiri kwa Mtundu wa E. Pazifukwa zaukadaulo palibe njira yopangira, motero Mtundu wa S, womwe ndinjira zopangira zopanda msoko, amagwiritsidwa ntchito kwambiri.
Njira Yopangira ASTM A53 Type E
Kapangidwe kake kakuphatikiza kupanga ma coils achitsulo kudzera mu mipukutu, kuwotcherera m'mphepete mwa kutenthetsa kukana, kutulutsa ma welds, ndi kukula ndi kuwongola kuti apange machubu.
Makhalidwe a ASTM A53 Type E Steel Pipe
Ali ndi ma welds awiri aatali atali mkati ndi kunja.Mphepete mwazitsulo zazitsulo zimapangidwira mkati ndi kunja kwa chitoliro panthawi yopangira kuti zitsimikizire mphamvu ndi kusindikiza.
Zowotcherera mkati ndi kunja sizikuwoneka.Ma welds amkati ndi akunja amatsukidwa mpaka kutalika kofanana ndi chitoliro pakupanga, zomwe zimapangitsa kuti chitoliro chiwonekere komanso zotheka hydrodynamic katundu.
ASTM A53 Mtundu wa E Chemical Components
Pakuchepetsa kulikonse kwa 0.01% pansi pa mpweya wotchulidwawo, kuwonjezeka kwa 0.06% ya manganese pamwamba pa mlingo womwe watchulidwa kudzaloledwa kufika pa 1.65%.
Cu, Ni, Cr, Mo, ndi V, ndi zinthu zisanu pamodzi zosapitirira 1.00%.
ASTM A53 Mtundu E Mechanical Properties
Tension Test
Kukana welded mapaipi DN ≥ 200 adzayesedwa pogwiritsa ntchito zitsanzo ziwiri zopingasa, wina kudutsa weld ndi wina moyang'anizana ndi weld.
| Mndandanda | gulu | Gulu A | Gulu B |
| Mphamvu zolimba, min | MPa [psi] | 330 [48,000] | 415 [60,000] |
| Mphamvu zokolola, min | MPa [psi] | 205 [30,000] | 240 [35,000] |
| Elongation mu 50 mm (2 mu) | Zindikirani | A, B | A, B |
Onani A: Kutalika kocheperako mu 2 mu[50 mm] kudzakhala komwe kutsimikiziridwa ndi equation iyi:
e = 625000 [1940] A0.2/U0.9
e = kutalika kochepa mu 2 mu kapena 50 mm mu peresenti, yozungulira mpaka peresenti yapafupi
A = kuchepera kwa 0.75 in2[500 mm2] ndi gawo lagawo lachitsanzo choyezetsa kupanikizika, kuwerengeredwa pogwiritsa ntchito mawonekedwe akunja a chitoliro, kapena m'lifupi mwadzina lachitsanzo choyezera kukanikizako ndi makulidwe ake a khoma la chitoliro, ndi mtengo wowerengeka wozungulira pafupi ndi 0.01 mu2 [1 mm2].
U=yodziwika mphamvu yocheperako, psi [MPa].
Zindikirani B: Onani Table X4.1 kapena Table X4.2, zilizonse zomwe zingagwiritsidwe ntchito, pamiyezo yocheperako yomwe imafunikira kuti muphatikizire mitundu yosiyanasiyana yachitsanzo cha tension test ndi mphamvu yocheperako.
Bend Test
Kwa chitoliro, DN ≤50, kutalika kokwanira kwa chitoliro kumatha kuzizira mpaka 90 ° kuzungulira cylindrical mandrel, yomwe m'mimba mwake ndi nthawi khumi ndi ziwiri kuposa momwe idatchulidwira kunja kwa chitoliro, popanda kupanga ming'alu pagawo lililonse komanso popanda kutsegula weld.
Chitoliro chowirikiza kawiri pa DN 32 sichiyenera kuyesedwa.
"Double-extra-strong", yomwe nthawi zambiri imatchedwa XXSndi chitoliro chokhala ndi makulidwe olimba mwapadera, omwe amagwiritsidwa ntchito kwambiri m'mafakitale kuti athe kupirira zovuta komanso malo ovuta.Makulidwe a khoma la chitoliro ichi ndi chokulirapo kuposa chitoliro wamba, motero amapereka mphamvu zambiri komanso kukhazikika bwino.
Mayeso a Flattening
Mayeso a flatten apangidwa pa chitoliro chowotcherera pamwamba pa DN 50 mu kulemera kwamphamvu (XS) kapena kupepuka.
Njira yoyeserera yotsatirayi ikugwira ntchito ku Type E, Magiredi A ndi B.
Pa kukanikiza mopanda phokoso, weld iyenera kuyikidwa pa 0 ° kapena 90 ° mpaka pamzere wowongolera mphamvu, kutengera zofunikira.
Gawo 1: Yesani ductility wa weld.Pasakhale ming'alu kapena kusweka mkati kapena kunja kwa weld mpaka mtunda pakati pa mbale zathyathyathya ndi zosakwana magawo awiri pa atatu a kunja kwake kwa chitoliro.
Gawo 2: Pitirizani kukanikiza lathyathyathya ndi kuyesa ductility m'dera kunja weld.Sipayenera kukhala ming'alu kapena kusweka mkati kapena kunja kwa chitoliro kupitirira weld mpaka mtunda pakati pa mbale lathyathyathya ndi osachepera gawo limodzi mwa magawo atatu a m'mimba mwake kunja kwa chitoliro, koma osachepera kasanu makulidwe a chitoliro. khoma la bomba.
Gawo 3: Yesani kukhulupirika kwa zinthuzo popitiliza kukanikiza mopanda phokoso mpaka choyeserera chithyoke kapena makoma a chitoliro akumana.Izi zimagwiritsidwa ntchito poyesa zinthuzo pamavuto monga zigawo zosweka, kusamveka bwino, kapena ma welds osakwanira.
Kuyesedwa kwa Hydrostatic
Mayeso a hydrostatic adzagwiritsidwa ntchito, popanda kutayikira kudzera mumsoko wowotcherera kapena thupi la chitoliro.
Chitoliro chopanda mapeto chidzayesedwa ndi hydrostatically ku mphamvu yomwe ikuperekedwa mu Table X2.2,
chitoliro cha ulusi-ndi-wophatikizana chidzayesedwa mwa hydrostatically kukakamiza komwe kuli mu Table X2.3.
Kwa mapaipi achitsulo omwe ali ndi DN ≤ 80, kuthamanga kwa mayeso sikudutsa 17.2MPa;
Kwa mapaipi achitsulo okhala ndi DN ~80, kuthamanga kwa mayeso sikudutsa 19.3MPa;
Nondestructive Electric Test
Kwa mtundu wa E ndi mtundu wa F Class B mapaipi DN ≥ 50, ma welds ayenera kuyesedwa osawononga magetsi.
Kuyesa kwamagetsi kosawononga kudzachitidwa molingana ndi Mafotokozedwe a E213, E273, E309 kapena E570.
Ngati kuyezetsa kwamagetsi kosawononga kwachitika, chitolirocho chiyenera kulembedwa "NDI".
ASTM A53 Dimensional Tolerances
Ma chart a Kulemera kwa Chitoliro ndi Madongosolo a Mapaipi
Ubwino wa ASTM A53 Type E Pipe
Resistance welding ndi njira yotsika mtengo yowotcherera, zomwe zimapangitsa machubu a Type E kukhala otsika mtengo kupanga komanso oyenera kupanga zambiri.
Kukaniza kuwotcherera kumathamanga ndipo kumatha kupangidwa mosalekeza, komwe kumawonjezera zokolola ndikuchepetsa nthawi zotsogolera.
Chifukwa cha makina ake abwino komanso kukana dzimbiri, chitoliro chamtunduwu chimagwiritsidwa ntchito kwambiri potengera zinthu zamadzimadzi, monga madzi, gasi ndi nthunzi.
Ma welds amatha kukhala osawoneka bwino pochiza ma welds, omwe samangowonjezera mawonekedwe a chitoliro komanso amachepetsa kukana kwamadzimadzi omwe amayamba chifukwa cha ma welds..
Kugwiritsa ntchito kwa ASTM A53 Type E Steel Pipe
Kugwiritsa ntchito mwamapangidwe: Pomanga, chitoliro chachitsulo cha A53 Type E chimagwiritsidwa ntchito ngati zigawo zamapangidwe monga zomangira zomangira ndi makina a truss.
Kupopera madzi: Amagwiritsidwa ntchito m'makina operekera madzi m'nyumba, kuphatikiza makina opopera moto.
Steam systems: M'mafakitale, chitoliro chachitsulo ichi chimagwiritsidwa ntchito kwambiri pamayendedwe operekera nthunzi, makamaka pamagetsi otsika.
Kutumiza kwa gasi: Amagwiritsidwa ntchito ponyamula mpweya wachilengedwe kapena mpweya wina, makamaka m'matauni ndi machitidwe operekera gasi.
Zomera za mankhwala: potumiza nthunzi yocheperako, madzi, ndi mankhwala ena.
Mapepala ndi mphero za shuga: kutengera zinthu zopangira ndi zomalizidwa, komanso kutaya zinyalala zamachitidwe.
Kutentha ndi kuziziritsa machitidwe: Amagwiritsidwa ntchito kwambiri popangira mapaipi potenthetsa, mpweya wabwino, ndi ma air conditioning (HVAC).
Kuchiza madzi oipa: Pakutumiza madzi oipa kapena oyeretsedwa.
Njira zothirira: Mapaipi amadzi omwe amagwiritsidwa ntchito pa ulimi wothirira.
Migodi: Amagwiritsidwa ntchito poyendetsa madzi ndi gasi m'migodi.
Zathu Zogwirizana
Chiyambireni kukhazikitsidwa mu 2014, Botop Steel yakhala ikugulitsa chitoliro chachitsulo cha carbon ku Northern China, chomwe chimadziwika ndi ntchito zabwino kwambiri, zinthu zamtengo wapatali, komanso zothetsera mavuto.
Kampaniyo imapereka mapaipi osiyanasiyana azitsulo za kaboni ndi zinthu zina,
kuphatikizapo zitsulo zopanda msoko, ERW, LSAW, ndi SSAW chitoliro chachitsulo, komanso mzere wathunthu wazitsulo ndi ma flanges.
Zopangira zake zapadera zimaphatikizanso ma aloyi apamwamba kwambiri ndi zitsulo zosapanga dzimbiri za austenitic, zopangidwa kuti zikwaniritse zofunikira zama projekiti osiyanasiyana amapaipi.
Tags: ASTM a53, mtundu e, kalasi a, kalasi b, erw.
Nthawi yotumiza: May-12-2024