Ha makala a disebediswa tsa maemo a hodimo, boiler ya motlakase, le disebediswa tsa dikhemikhale a ntse a ntlafala ka 2026, ditlhoko tsa tshebetso bakeng sa diphaephe—haholoholo mabapi le bokgoni ba mocheso o phahameng, kgatello e phahameng, le ho hanela mafome—di eketsehile haholo. Jwalo ka sehlopha sa diphaephe tse sebetsang hantle, diphaephe tsa tshepe tse se nang motswako di bapala karolo ya bohlokwa haholo masimong a kang dikhemikhale tsa peterole, tlhahiso ya motlakase le tlhahiso ya diphaephe. Har'a tsena,ASTM A335Liphaephe tsa tšepe tsa motsoako oa chromium-molybdenum tse latellanang li fetohile thepa e khethiloeng bakeng sa libaka tse hlokang tlhokomelo e ngata tsa indasteri, ka lebaka la ho hanyetsa ha tsona mocheso o phahameng haholo, ho hanyetsa ho hasana le ho hanyetsa ho bola. Sengoloa sena se hlalosa ka mokhoa o hlophisehileng litšobotsi le ts'ebeliso ea limaraka tse tloaelehileng—tse kangA335 P5, P9, P11, P22, leP91—mme e fana ka temohisiso ea botsebi ho tataisa liqeto tsa theko.
I. Kakaretso e qaqileng le Litšebeliso tsa Bohlokoa tsa Lisebelisoa tsa Letoto la ASTM A335
TheTekanyetso ea ASTM A335e akaretsa mefuta e fapaneng ea liphaephe tse se nang moedi tsa tšepe ea ferritic alloy; ka lebaka la phapang ea metsoako ea lik'hemik'hale le thepa ea mechini, mofuta ka mong o loketse mocheso o itseng, khatello le libaka tse senyang.
1. A335 P5(E lekana le limaraka tsa lapeng12Cr5Mo/1Cr5Mo)
P5 ke e 'ngoe ea lihlopha tse emelang ka ho fetisisa tekanyetsong ea ASTM A335, e nang le chromium ea 4.00–6.00% le molybdenum ea 0.45–0.65%. Thepa ena e latela maemo a ASTM A335/A335M le ASME SA335/SA335M, e fanang ka matla a ho thaepa a ≥415 MPa le matla a tlhahiso a ≥205 MPa.
Liphaephe tsa tšepe tsa P5 li bontša mocheso o ikhethang le khanyetso ea ho thekesela libakeng tse nang le mocheso o phahameng ho fihlela ho 540°C. Litšebeliso tsa bohlokoa li kenyelletsa:
Indasteri ea Matla: Li-superheater tsa boiler, li-reheater, le liphaephe tse kholo tsa mouoane; li loketse likarolo tsa boiler tse nang le khatello e phahameng tse sebetsang ka khatello ea ≥9.8 MPa le mocheso o pakeng tsa 450°C le 650°C.
Indasteri ea Petrochemical: Likarolo tsa bohlokoa tse kang liphaephe tsa phetisetso bakeng sa li-reactor tsa hydroprocessing, mela ea phetisetso bakeng sa li-unit tsa ho petsoha, le li-unit tsa ho lokisa li-catalytic. Mecheng ea oli le khase e nang le sebabole, sekhahla sa ho bola ha tšepe ea P5 se tlase ka 40% ho feta sa tšepe e sa hloekang ea 304. Tlhahiso ea likarolo tsa sebopeho: Likarolo tsa mechini tse kang liphaephe tsa ho phunya oli, li-shaft tsa ho khanna likoloi, le masale a ho bearing a rolling.
2. A335 P9
P9 ke ea letoto la li-chromium tse phahameng, tse nang le chromium ea 8-10% le molybdenum ea 0.9-1.1%; e fana ka khanyetso e ntle ea oxidation mochesong o phahameng le matla a phahameng. Liphaephe tsena li sebelisoa haholo indastering ea petrochemical le lisebelisoa tsa boiler, tse loketseng libaka tsa ts'ebetso tse nang le khatello e phahameng, mocheso o phahameng (khatello e phahameng ea ts'ebetso >9.8 MPa; mocheso o fihlang ho 650°C). P9 e sebelisoa hangata ho etsa likarolo tse jereng khatello tse kang li-superheater tsa boiler le li-reheater, 'me e sebelisoa haholo li-unit tsa ho petsoha ha li-catalytic tsa refinery le liphaephe tse nang le sebabole mochesong o phahameng.
3. A335 P11
P11 ke tšepe ea chromium-molybdenum e nang le motsoako o tlase e nang le chromium ea 1.0–1.5% le molybdenum ea 0.44–0.65%, e fanang ka ho tjheseletsa hantle le matla a mocheso o mahareng. Tshebetso ea eona e feta ea liphaephe tse tloaelehileng tsa tšepe tse se nang sekoli; e bobebe ka boima ha e ntse e fana ka matla a lekanang a ho kobeha le a ho phethoha.
P11 e sebelisoa haholo-holo ho:
Liphaephe tsa phetiso ea mouoane tse nang le mocheso o mahareng lefapheng la petrochemical
Mekhoa ea liphaephe tse nang le mocheso o phahameng liindastering tse kang ho ntša oli, phetiso ea khase ea tlhaho le tlhahiso ea motlakase o chesang
Mocheso o sebetsang: ≤550°C
P11 ke thepa e kgethwang ya ntlafatso ha dithempereichara tsa tshebetso di feta moedi o ka hodimo bakeng sa diphaephe tsa tshepe ya khabone (ASTM A106).
4. A335 P22(e lekanang le sehlopha sa lapeng12Cr2MoG)
P22 e na le 2.25% chromium le 1% molybdenum mme e etselitsoe ka ho khetheha libaka tse nang le mocheso o phahameng, tse nang le khatello e phahameng, tse nang le mocheso o sebetsang oa ho fihlela ho 580°C le khatello ea ≥9.8 MPa. Thepa ena e kopanya matla a phahameng a ho qhaqha le ho thiba ha nako e telele.
P22 e sebelisoa haholo bakeng sa liphaephe tse kholo tsa mouoane le lihlooho tsa li-boiler tsa lifeme tsa motlakase, li-superheater le liphaephe tsa mouoane indastering ea petrochemical, le litsamaiso tsa liphaephe tse nang le khatello e phahameng lisebelisoa tsa matla a nyutlelie. Mocheso o sebetsang: ≤600°C. E bapala karolo ea bohlokoa lits'ebetsong tse fapaneng tsa liphaephe tse futhumatsang holim'a matla a mocheso, matla a nyutlelie le makala a petrochemical. 5. A335 P91 (e lekanang le sehlopha sa lapeng sa 10Cr9Mo1VNb)
P91 ke sehlopha se sebetsang hantle ka har'a letoto la A335, se nang le chromium ea 8–9.5% le molybdenum ea 0.85–1.05%, ka ho eketsoa ha likarolo tse nyane tse kang vanadium (V) le niobium (Nb). E fana ka matla a tlhahiso ea ≥415 MPa le matla a ho thaepa a ≥585 MPa, 'me e loketse mocheso o sebetsang ho fihlela ho 625°C.
Melemo ea mantlha ea P91 e kenyelletsa:
Kgatelelo ya yona e dumeletsweng maemong a 550–650°C e imenne habeli ho feta ditshipi tsa setso, e leng se dumellang phokotso ya 40% botenya ba lebota la phaephe tlasa maemo a tshwanang.
E na le matla a matle a mocheso o phahameng, ho hanyetsa oxidation le ho hanyetsa ho thekesela.
Matla a ho phatloha ha eona ho 600°C a phahame ka makhetlo a 3-4 ho feta a thepa e tšoanang.
P91 e sebediswa haholoholo bakeng sa ho kenya diphaephe tse kgolo tsa mouoane diyuniti tsa motlakase tse bohlokwa haholo le tse bohlokwa haholo, ho kenya diphaephe tse nang le kgatello e phahameng dipolanteng tsa motlakase wa nyutlelie, le di-superheater diboiler tse kgolo tsa seteishene sa motlakase. Lilemong tsa morao tjena, e se e amohetswe haholo bakeng sa ho kenya diphaephe tse kgolo tsa mouoane dipolanteng tse kgolo tsa motlakase naheng ya heso.
II. Lintlha tsa Bohlokoa tsa ho Reka Liphaephe tsa Tšepe ea Motsoako
1. Khetho e Nepahetseng ea Thepa e Thehiloeng ho latela Maemo a Ts'ebetso
Khetho ea thepa e tlameha ho ipapisa le ho tšoaneleha bakeng sa maemo a itseng a ts'ebetso. Bakeng sa lisebelisoa tsa boiler tsa mocheso o phahameng, tse nang le khatello e phahameng, limaraka tse khethehileng tsa motsoako oa boiler tse kang12Cr1MoVGle15CrMoGli loketse; Mekhahlelo ea P5 le P9 e khethoa bakeng sa li-unit tsa ho petsoha ha li-catalytic tsa ho hloekisa le liphaephe tse nang le sebabole; 'me thepa ea boemo bo holimo joalo ka P91 ea hlokahala bakeng sa liphaephe tse kholo tsa mouoane tsa li-unit tsa bohlokoa haholo. Bakeng sa mocheso o sebetsang o fetang 600°C, esita le thepa ea boemo bo holimo joalo ka P92 e lokela ho nahanoa. Qoba ho etsa liqeto tse thehiloeng feela thekong - liphaephe tsa alloy li bitsa 30-50% ho feta tšepe e tloaelehileng ea carbon, 'me litheko tse tlase haholo li ka bontša sebopeho sa lik'hemik'hale se sa lokelang kapa liphoso tsa tlhahiso.
2. Netefatso e Tiileng ea Sebopeho le Maemo a Thepa
Nakong ea theko, ho bohlokoa ho netefatsa hore motsoako oa lik'hemik'hale oa thepa o fihlela litlhoko tse tloaelehileng (mohlala, P5 e hloka chromium ea 4.0–6.0% le molybdenum ea 0.45–0.65%). Bafepedi ba tlameha ho fana ka litlaleho tsa tlhahlobo ea spectral le Litifikeiti tse felletseng tsa Teko ea Thepa (MTC). Hlokomela ka ho khetheha hore 12% ea lisampole tse potolohang 'marakeng li na le chromium le molybdenum tse ka tlase ho meeli e tloaelehileng e fokolang. Bakeng sa merero ea bohlokoa, ho khothaletsoa ho nka sampole le ho hlahloba batho ba bang (mohlala, ke SGS). 3. Tsepamisa maikutlo ho Litšoaneleho tsa Bafepedi le Bokhoni ba Teko
Bafepedi ba boleng bo hodimo ba lokela ho ba le setifikeiti sa sistimi ya boleng ba ISO9001 mme ba be le mela ya tlhahiso ya ho tjhesa le ho hula/ho tjhesa e batang, hammoho le dilaesense tsa tlhahiso tse latelang melao. Ba lokela ho hlomellwa ka dibaka tsa tlhahlobo tsa profeshenale tse kgonang ho etsa tlhahlobo ya sebopeho sa dikhemikhale, teko ya thepa ya mechini, le teko e sa senyeheng (MT/UT), mme ba fane ka ditlaleho tse felletseng tsa tlhahlobo ha ba fihla. Bahlahisi ba nang le Laesense e Ikgethang ya Tlhahiso ya Disebediswa ba lokela ho fuwa bohlokwa.
4. Beha Pele Kalafo ea Mocheso le Taolo ea Ts'ebetso
Mokhoa oa ho phekola mocheso (ho normalizing + ho temperature) bakeng sa liphaephe tsa tšepe ea alloy o ama ka ho toba litšobotsi tsa thepa. Ho bohlokoa ho netefatsa hore mokhoa oa tlhahiso o sebelisa ho hloekisa ladle (ho fokotsa litšila tsa sebabole le phosphorus) le kalafo ea mocheso e habeli ea ho normalizing le ho temperature (ho thibela ho korotla ha lijo-thollo). Bakeng sa litšepe tse nang le motsoako o mongata joalo ka P91, tse kotsing ea ho petsoha ho liehang ho bakoang ke haeterojene nakong ea ho tjheseletsa, ts'ebetso e kopaneng ea argon-arc le ea ho tjheseletsa ea motlakase e tlameha ho sebelisoa, 'me mocheso oa pele o laoloe ka thata.
5. Netefatsa ho nepahala ha litekanyo le maemo a tlhahlobo
Mamello ea bophara ba kantle e lokela ho laoloa ka hare ho ±0.75%, 'me ho kheloha ha botenya ba lebota ha hoa lokela ho feta ±10%. Liteko tsa Ultrasonic li tlameha ho fihlela maemo a Boemo ba L2 (GB/T 5777), 'me boholo ba lijo-thollo e lokela ho ba Kereiti ea 5 kapa e be ntle ho feta. Likonteraka tsa theko li lokela ho hlalosa ka ho hlaka mekhoa ea ho sebetsana le liqabang tsa boleng, ho kenyeletsoa le litlhaloso tsa mokhoa oa ho tjheseletsa le mekhoa ea ho khutlisa kapa ho nkela thepa sebaka ka lebaka la mathata a boleng.
III. Matla a 'Maraka le Mekhoa ea Indasteri
Ho tloha ka 2026, 'maraka oa liphaephe tsa tšepe ea motsoako o ntse o tsoela pele ho nyoloha ka mokhoa o tsitsitseng. Lintlha tsa indasteri li bontša hore ka 2024, palo ea bafepedi ba liphaephe tsa tšepe ea motsoako o tšoanelehang naheng ea heso e fihlile ho 27, ka bokhoni ba tlhahiso ea selemo le selemo bo fetang lithane tse 500,000. Mabapi le litheko, lifeme tse kholo tsa tšepe li sa tsoa boloka litheko tse tsitsitseng, ha liodara tsa limaraka tsa tšepe ea motsoako o nang le tungsten le molybdenum li ka "buisanoa motheong oa odara ka 'ngoe."
Ha disebediswa tse kgolo tsa tlhahiso ya motlakase di ntse di fetoha ho ya bokgoning le diparamenteng tse hodimo, tlhoko ya disebediswa tse sebetsang hantle jwalo ka P91/T91 e ntse e hola. Boqapi ba theknoloji hajwale bo shebane le dibaka tse kang theknoloji ya ho kopanya di-micro-alloying le ntlafatso ya ditshebetso tsa kalafo ya mocheso.
IV. Hobaneng re lokela ho sebelisana le rona?
Tšehetso ea Khetho ea Litsebi: Re na le boiphihlelo bo boholo ba ho fana ka mefuta eohle ea thepa ea ASTM A335 'me re ka bapisa hantle thepa le litlhaloso tse loketseng ka ho fetisisa le maemo a hau a ts'ebetso (mocheso, khatello le litšobotsi tse mahareng). Netefatso ea Boleng: Taolo e tiileng ho pholletsa le ts'ebetso eohle—ho tloha khethong ea thepa e tala ho isa tlhahlobong ea sehlahisoa se felileng. Lihlahisoa tsohle li feta litekong tse ngata tsa boleng bo nepahetseng, li feta maemo a indasteri bakeng sa ho nepahala ha boholo le thepa ea mechini.
Tšebeletso e Tenyetsehang: Re tšehetsa ho etsa li-prototyping tse nyane le ho iketsetsa litlhaloso tse sa tloaelehang, re fana ka mefuta e felletseng ea lihlahisoa le ho fumaneha ho lekaneng ha setoko.
Ho Latela ka Botlalo: Re fana ka setifikeiti se felletseng sa thepa, litlaleho tsa liteko tsa motho oa boraro, le litifikeiti tsa boleng ba MTC ho netefatsa hore sehlahisoa se latela ka botlalo.
Tšehetso ea Litsebi Kamora Thekiso: Re fana ka lits'ebeletso tse felletseng tsa kamora thekiso, ho kenyeletsoa tataiso ea ts'ebetso ea ho tjheseletsa le lipuisano tsa tekheniki.
Ikopanye le rona kajeno ho fumana moralo oa khetho ea phaephe ea tšepe ea alloy e entsoeng ka mokhoa o ikhethileng le khotheishene ea morao-rao ea theko!
Nako ea poso: Phato-07-2026
