1. Litšobotsi tsa ts'ebetso, ts'ebeliso le maemo a sebetsang
SA302GrB ke poleiti ea tšepe ea motsoako oa manganese-molybdenum-nickel e nang le motsoako o tlase e leng ea maemo a ASTM A302 'me e etselitsoe lisebelisoa tsa mocheso o phahameng le khatello e phahameng tse kang lijana tsa khatello le liboiler. Litšobotsi tsa eona tsa mantlha tsa ts'ebetso li kenyelletsa:
Litšobotsi tse ntle tsa mechini: matla a ho thapolla ≥550 MPa, matla a ho ntsha ≥345 MPa, ho lelefatsa ≥18%, le ho tiea ha tshusumetso ho fihlela maemo a ASTM A20.
Tshebetso e ntle ea ho tjheseletsa: e tšehetsa ho tjheseletsa ha arc ka letsoho, ho tjheseletsa ha arc ka metsing, ho tjheseletsa ka khase le lits'ebetso tse ling, 'me ho futhumatsa pele le kalafo ea mocheso lia hlokahala kamora ho tjheseletsa ho thibela mapetso.
Ho hanyetsa mocheso o phahameng le ho hanyetsa ho bola: E lula e tsitsitse ka har'a mocheso o sebetsang ho tloha ho -20℃ ho isa ho 450℃, e loketse libaka tsa media tse senyang tse kang li-acid le li-alkali.
E bobebe le matla a phahameng: Ka moralo o tlase oa ho kopanya, ha o ntse o fokotsa boima ba sebopeho, bokhoni ba ho jara khatello boa ntlafala 'me litšenyehelo tsa tlhahiso ea lisebelisoa lia fokotseha.
Maemo a sebetsang: lisebelisoa tsa bohlokoa masimong a lik'hemik'hale tsa petrochemicals, liboiler tsa lifeme tsa motlakase, lifeme tsa matla a nyutlelie, tlhahiso ea motlakase oa metsi, jj., joalo ka li-reactor, li-heat exchanger, litanka tse chitja, likepe tsa khatello ea li-reactor tsa nyutlelie, meropa ea liboiler, jj.
2. Likarolo tse ka sehloohong, liparamente tsa ts'ebetso le thepa ea mechini
Sebopeho sa lik'hemik'hale (tlhahlobo ea ho qhibiliha):
C (khabone): ≤0.25% (≤0.20% ha botenya bo le ≤25mm)
Mn (manganese): 1.07%-1.62% (1.15%-1.50% ha botenya bo le ≤25mm)
P (phosphorus): ≤0.035% (maemo a mang a hloka ≤0.025%)
S (sebabole): ≤0.035% (maemo a mang a hloka ≤0.025%)
Si (silicone): 0.13%-0.45%
Mo (molybdenum): 0.41%-0.64% (litekanyetso tse ling li hloka 0.45%-0.60%)
Ni (nikele): 0.40%-0.70% (botenya bo itseng)
Liparamente tsa tshebetso:
Matla a ho thapolla: 550-690 MPa (80-100 ksi)
Matla a tlhahiso: ≥345 MPa (50 ksi)
Ho lelefatsa: ≥15% ha bolelele ba gauge e le 200mm, ≥18% ha bolelele ba gauge e le 50mm
Boemo ba kalafo ea mocheso: Ho tlisoa boemong ba ho normalizing, normalizing + tempering kapa ho pitikisa ho laoloang, phekolo ea normalizing ea hlokahala ha botenya bo le >50mm.
Melemo ea ts'ebetso ea mechini:
Tekanyo ea matla a phahameng le ho tiea: Ka matla a ho thapolla a 550-690 MPa, e ntse e boloka bolelele ba ≥18%, e netefatsa bokhoni ba lisebelisoa ba ho hanela ho robeha ho robehang.
Sebopeho sa koro e ntle: E fihlela litlhoko tsa boholo ba koro e ntle ea tekanyetso ea A20/A20M mme e ntlafatsa ho tiea ha tšusumetso mochesong o tlase.
3. Linyeoe tsa kopo le melemo
Indasteri ea Petrochemical:
Nyeoe ea ts'ebeliso: Khamphani ea peterole e sebelisa lipoleiti tsa tšepe tsa SA302GrB ho etsa li-reactor tse nang le khatello e phahameng, tse 'nileng tsa sebetsa ka ho tsoelang pele ka lilemo tse 5 ho 400℃ le 30 MPa ntle le mapetso kapa ho fetoha.
Melemo: Ho hanyetsa ka mokhoa o babatsehang ho ts'enyeho ea haeterojene, le ho lemoha liphoso tsa ultrasonic ka 100% ho netefatsa polokeho ea lisebelisoa.
Tšimo ea feme ea matla a nyutlelie:
Nyeoe ea ts'ebeliso: Sejana sa khatello sa reactor sa feme ea matla a nyutlelie se sebelisa poleiti ea tšepe ea SA302GrB e nang le botenya ba 120mm. Ka kalafo ea normalizing + tempering, khanyetso ea mahlaseli e ntlafala ka 30%.
Molemo: Sekhahla sa molybdenum sa 0.45%-0.60% se thibela ho qhibiliha ha mahlaseli a neutron mme se fihlella ditlhoko tsa ditlhaloso tsa ASME.
Tšimo ea boiler ea seteishene sa motlakase:
Nyeoe ea ts'ebeliso: Moqomo oa boiler o nang le boiler bo bohlokoa haholo o sebelisa poleiti ea tšepe ea SA302GrB, e sebetsang ka 540℃ le 25 MPa, 'me bophelo ba eona ba ts'ebeletso bo atolosoa ho fihlela lilemo tse 30.
Molemo: Matla a nako e khuts'oane a mocheso o phahameng a fihla ho 690 MPa, e leng bobebe ka 15% ho feta tšepe ea carbon mme e fokotsa tšebeliso ea matla.
Tšimo ea tlhahiso ea motlakase oa metsi:
Nyeoe ea ts'ebeliso: Phaephe ea metsi e nang le khatello e phahameng ea seteishene sa motlakase oa metsi e sebelisa poleiti ea tšepe ea SA302GrB 'me e feta liteko tse 200,000 tsa mokhathala tikolohong ea -20℃ ho isa ho 50℃.
Molemo: Ho tiea ha tšusumetso mochesong o tlase (≥27 J ho -20℃) ho fihlela litlhoko tse feteletseng tsa boemo ba leholimo ba libaka tse lithaba.
4. Polokeho, tshireletso ya tikoloho le bohlokwa ba indasteri
Polokeho:
Teko ea tšusumetso ea ASTM A20 e fetile (matla a tšusumetso ea V-notch ≥34 J ho -20℃), ho netefatsa hore kotsi ea ho robeha ha brittle mochesong o tlase e ka tlase ho 0.1%.
Bothata ba sebaka se amehileng ke mocheso sa weld ke ≤350 HV ho thibela ho petsoha ho bakoang ke haeterojene.
Tšireletso ea tikoloho:
Sekhahla sa molybdenum sa 0.41%-0.64% se fokotsa tshebediso ya nickel mme se fokotsa mosi o tswang tshepeng e boima.
E latela taelo ea EU RoHS 'me e thibela tšebeliso ea lintho tse kotsi tse kang loto le mercury.
Bohlokoa ba indasteri:
E ikarabella bakeng sa 25% ea 'maraka oa lefats'e oa tšepe ea likepe tsa khatello 'me ke thepa ea bohlokoa bakeng sa ho fumana sebaka sa lisebelisoa tsa matla a nyutlelie le tsa petrochemical.
E tšehetsa lits'ebetso tse fapaneng tsa mocheso ho tloha ho -20℃ ho isa ho 450℃, 'me e ntlafatsa katleho ea ts'ebetso ea lisebelisoa ka 15%-20% ha e bapisoa le tšepe ea khabone ea setso.
Qetello
Poleiti ea tšepe ea SA302GrB e fetohile thepa ea mantlha ea lisebelisoa tsa sejoale-joale tsa indasteri tse nang le mocheso o phahameng le khatello e phahameng ka lebaka la matla a eona a phahameng, ho hanyetsa mafome le ho tjheseletsa habonolo. Tekanyo ea eona ea polokeho, tšireletso ea tikoloho le ho boloka litšenyehelo e etsa hore e se ke ea nkeloa sebaka masimong a matla a nyutlelie, lik'hemik'hale tsa peterole, matla, jj., 'me e khanna nts'etsopele ea lisebelisoa tsa indasteri ho ea tseleng e sebetsang hantle le e sireletsehileng haholoanyane.
Nako ea poso: Phuptjane-04-2025