Sebopeho sa lik'hemik'hale

Gr.3: Likahare tsa carbon ≤0.19%, silicon content 0.18% -0.37%, manganese content 0.31% -0.64%, phosphorus le sulfur content ≤0.025%, hape e na le 3.18% -3.82% nickel.

Gr.6: Likahare tsa carbon ≤0.30%, silicon content ≥0.10%, manganese content 0.29% -1.06%, phosphorus le sulfur content All ≤0.025%.

Thepa ea mechine

Gr.3: tensile matla ≥450MPa, chai e ngata ≥240MPa, elongation ≥30% longitudinally, ≥20% transversely, le tšusumetso e tlase mocheso mocheso ke -150 ° F (-100 ° C).

Gr.6: tensile strength ≥415MPa, chaie strength ≥240MPa, elongation ≥30% longitudinally, ≥16.5% transversely, mocheso o tlase oa phello ea teko ke -50 ° F (-45 ° C).

Mokhoa oa tlhahiso

Smelting: Sebelisa sebōpi sa motlakase kapa converter le lisebelisoa tse ling ho tlosa oxidize, ho tlosa slag le alloy tšepe e qhibilihisitsoeng ho fumana tšepe e hloekileng e qhibilihisitsoeng.

Rolling: Kenya tšepe e qhibilihisitsoeng ka har'a leloala le bilikang, butle-butle fokotsa bophara ba tšupu 'me u fumane botenya ba lebota bo hlokahalang, ka nako e ts'oanang, boreleli holim'a tšupu ea tšepe.

Ts'ebetso e batang: Ka ts'ebetso e batang joalo ka ho taka ho batang kapa ho roala ho batang, ho nepahala le boleng ba bokaholimo ba tube ea tšepe bo ka ntlafatsoa le ho feta.

Phekolo ea mocheso: Ka kakaretso, e fanoa ka mokhoa o tloaelehileng kapa o tloaelehileng le o tsitsitseng ho felisa khatello e setseng ka har'a tube ea tšepe le ho ntlafatsa tshebetso ea eona e feletseng.

Sebaka sa kopo

Petrochemical: E sebelisoa ho etsa liphaephe tsa likepe tse nang le khatello e tlase ea mocheso le liphaephe tse futhumatsang mocheso o tlase masimong a peterole, indasteri ea lik'hemik'hale, joalo-joalo, e ka fihlelang litlhoko tsa ts'ebeliso libakeng tse nang le mocheso o tlase, joalo ka gase ea tlhaho e entsoeng ka mokelikeli, litanka tsa polokelo ea khase ea tlhaho, liphaephe tse tsamaisang mocheso o tlase, jj.

Khase ea tlhaho: E loketse lipeipi tsa phetisetso ea khase ea tlhaho le litanka tsa polokelo ea khase le lisebelisoa tse ling ho netefatsa ts'ebetso e bolokehileng maemong a mocheso o tlase.

Makala a mang: E ​​boetse e sebelisoa ho matla, sefofane le kaho ea likepe, joalo ka lisebelisoa tsa mantlha tsa meralo ea li-condensers, li-boilers le lisebelisoa tse ling tsa lisebelisoa tsa motlakase, le lisebelisoa tsa mantlha tsa meralo ea li-hydraulic system, litsamaiso tsa mafura le lisebelisoa tse ling lebaleng la sefofane.

Litlhaloso le litekanyo

Litlhaloso tse tloaelehileng le litekanyo li na le mefuta e mengata e fapaneng, joalo ka bophara ba ka ntle 21.3-711mm, botenya ba lebota 2-120mm, joalo-joalo.
Gr.6 seamless tšepe peipi, haholo-holo ASTM A333/A333M GR.6 kapa SA-333/SA333M GR.6pipe ea tšepe e se nang mocheso e tlaase, ke thepa ea bohlokoa ea indasteri, e sebelisoang haholo liketsahalong tse sa tšoaneng e hlokang ho tiea ha mocheso o tlaase le matla a phahameng. Lintlha tse latelang ke kenyelletso e qaqileng ea pipe ea tšepe ea Gr.6 seamless steel:

1. Maemo a ts'ebetsong le lisebelisoa

Maemo a ts'ebetsong: Gr.6 seamless steel pipe lisebelisoa ASTM A333/A333M kapa ASME SA-333/SA333M litekanyetso, tse fanoeng ke American Society for Testing and Materials (ASTM) le American Society of Mechanical Engineers (ASME) 'me li sebelisoa ka ho khetheha ho hlakisa litlhoko tsa tekheniki bakeng sa liphaephe tsa tšepe tse tlaase le mocheso o tlaase.

Material: Phaephe ea tšepe e se nang seamless ea Gr.6 ke peipi ea tšepe e se nang nickel ea mocheso o tlase, e sebelisang tšepe ea aluminium-deoxidized fine-grained low-themperature toughness steel, e tsejoang hape e le tšepe e bolailoeng ke aluminium. Sebopeho sa eona sa metallographic se bohareng ba 'mele oa cubic ferrite.

2. Sebopeho sa lik'hemik'hale

Motsoako oa lik'hemik'hale oa pipe ea tšepe e se nang seamless ea Gr.6 haholo-holo e kenyelletsa:

Carbon (C): Likahare li tlase, ka kakaretso ha li fete 0.30%, e leng ho thusang ho fokotsa brittleness ea tšepe.

Manganese (Mn): Likahare li pakeng tsa 0.29% le 1.06%, tse ka ntlafatsang matla le ho tiea ha tšepe.

Silicon (Si): Likahare li pakeng tsa 0.10% le 0.37%, e thusang ts'ebetso ea deoxidation ea tšepe 'me e ka matlafatsa matla a tšepe ho isa tekanyong e itseng.

Phosphorus (P) le sebabole (S): Joaloka likarolo tse sa hloekang, litaba tsa tsona li fokotsehile, ka kakaretso ha li fete 0.025%, hobane litaba tse phahameng tsa phosphorus le sebabole li tla fokotsa ho tiea le ho cheseha ha tšepe.

Lintho tse ling tsa alloying: tse kang chromium (Cr), nickel (Ni), molybdenum (Mo), joalo-joalo, litaba tsa tsona li boetse li laoloa ka tekanyo e tlaase ho netefatsa ts'ebetso e tlaase ea mocheso le ts'ebetso e feletseng ea tšepe.

3. Thepa ea mechine

Pipe ea tšepe ea Gr.6 e se nang seamless e na le lisebelisoa tse ntle haholo tsa mochini, haholo-holo ho kenyelletsa:

Matla a matla: Ka kakaretso pakeng tsa 415 le 655 MPa, e tiisang hore pipe ea tšepe e ka boloka botšepehi ba sebopeho le ho thibela ho phatloha ha khatello.

Matla a lihlahisoa: Bonyane boleng bo ka bang 240 MPa (e ka boela ea fihla ho feta 200 MPa), e le hore e se ke ea hlahisa deformation e feteletseng tlas'a matla a itseng a ka ntle.

Elongation: eseng ka tlase ho 30%, e bolelang hore phala ea tšepe e na le bokhoni bo botle ba ho fetola polasetiki 'me e ka hlahisa deformation e itseng ntle le ho senya ha e otlolloa ke matla a ka ntle. Sena ke sa bohlokoa ka ho khetheha bakeng sa ho sebelisoa libakeng tse tlaase tsa mocheso, hobane mocheso o tlaase o ka etsa hore thepa e be brittle, 'me polasetiki e ntle e ka fokotsa kotsi ea embrittlement e joalo.

Matla a tšusumetso: Ka mocheso o tlase o boletsoeng (joalo ka -45 ° C), matla a ts'usumetso a tlameha ho fihlela litlhoko tse itseng tsa linomoro ka netefatso ea tlhahlobo ea Charpy ho netefatsa hore phala ea tšepe e ke ke ea robeha tlas'a tšusumetso e tlase ea mocheso.