ASTM A333 SMLS Yeeb Nkab

ASTM A333 yog tus qauv rau Seamless Steel kav tshwj xeeb tsim rau tsawg-}}}} pa tawm, tshuaj engineering, thiab lub zog. Hauv qab no yog nws cov ncauj lus qhia ntxaws ntxaws:

1.Applicable Kub Ntau Yam
ASTM A333 them cov qhab nia ntau (gr .1 - Gr.11), thiab cov qib sib txawv sib haum rau qhov chaw qis qis {} kub ceev:
• Gr.6: Feem ntau siv tau kawm qib, kev ua haujlwm tsawg kawg -45℃(kev cuam tshuam ntsuas kub -45 degree).

• Gr.3 (muaj 3.18%- 3.82}% npib tsib): Siv tau raws -100 degree.

• Gr.8 (muaj 8.4-9.6% npib tsib): Siv tau rau -195℃(ua kua nitrogen ib puag ncig).

2. Cov Khoom Siv Khoom Siv
• Tsawg {- kub todle: dhau ntawm txhuas deoxidation nplua (xws li cua txias), qhov tsawg-kub tsis kam rau nkig tawg yog ua kom muaj tseeb.

• Corrosion Kuj: Tsawg leej faj thiab phosphorus tsim (p tsawg dua los yog sib npaug los yog sib npaug (xws li mn, ni) txhim kho corrosion.

• Vuam kev ua yeeb yam: Cov ntsiab lus muaj txiaj ntsig ntawm cov pa roj carbon tsawg dua lossis sib npaug rau 0.30%) ua kom zoo rau Weldability.

1.Ttypical Cheebtsam tshuaj (noj gr.6 ua piv txwv):

2. Cov Kev Ua Kom Zoo Li Cas:

NCO TSEG: Kev ntsuas kev ntsuas hluav taws xob muaj zog ntawm Gr.6 feem ntau siab dua tus qauv (piv txwv li, qhov cuam tshuam tus nqi ntawm -46℃ntau dua lossis sib luag rau 27J).

1. Cov Txheej Txheem Ntau Lawm

• Kub Rolling / Txias Drawing / Kub Expansion: Tsim los ntawm cov txheej txheem xws li tho, dov, thiab sizing kom ntseeg tau qhov tseeb.
• Kev Kho Cua Sov: Normalizing (saum 815 degree) lossis normaling + tempering yog yuav tsum tau tshem tawm kev ntxhov siab ntau dua thiab ua kom tau nplej.

2. Muaj ntau yam

• Sab nraud inch:21.3mm - 762 hli (nthuav dav rau 8-1240mm).
• Phab Ntsa Thickness:2.0mm - 140 mm, nrog kev tiv thaiv ntawm phab ntsa tuab ntau dua lossis sib npaug ntawm cov nominal tus nqi.

1.Txoj kev tsim nyog thiab tshuaj rau engineering

• Lng Thauj:Kua roj roj pipelines (feem ntau gr.6 thiab gr.8).
• Cov Khoom Siv Petrochemical: Tsawg {- kub reactorors, xws li ua kua nitrogen txias tshuab).

2. Kev lag luam thiab infrastructure

• Cov tub yees txias (ultra - qhov kub tsis txias txias cia khoom), Thaum Tshav Kub Kub Pipelines ntawm Chaw Nres Tsheb Loj.
• Roj thiab cov pa roj kev sib kis tau pipelines nyob rau hauv high - huab cua thiab thaj chaw txias (xws li Arctic Vief Project).

1. Execution Cov Qauv
• Astm A333 / ASME SA333: Cov Qauv Tsim Tsim Kev Lag Luam.

• GB / T 18984-2003: Suav cov qauv sib npaug (xws li 16mndg sib raug rau Gr.6).

2. Cov khoom kuaj tseem ceeb
• Kev Cuam Tshuam: Charpy V - Cov Lus Cuam Tshuam Tsis Yooj Yim.

• Tsis - Kev Kuaj: Hydrostatic Kev Kuaj lossis EDDY Kev Ntsuas Tam Sim No Los Ua kom muaj tsis muaj qhov tsis xws luag.

• Kev xaiv lub tsev: Xaiv cov qib kawm raws qhov tsawg kawg nkaus tsim qauv hlau (MDMT) (piv txwv, Gr.6 ntawm -45℃thiab gr.300 degree).

• Ceev faj rau kev siv:

1. Zam kev cuam tshuam thaum thauj mus los tiv thaiv cov kab nrib pleb nto.
2. Vuam yuav tsum sib phim nrog tsawg - hydrogen hydrogen vuam cov ntaub ntawv (xws li J507RH) kom tsis txhob tawg.

ASTM A333 Seamless Tubes, los ntawm kev ua kom ua tau zoo thiab kev kho cua sov, muaj cov khoom siv kub thiab muaj zog rau cov khoom siv roj liquidied. Nws mult -} qib qib (feem ntau gr.35℃(Asme / GB) ua kom muaj kev ntseeg siab rau txoj kev ntseeg tau. Thaum xaiv hom, nws yog ib qho tsim nyog kom muaj kev nkag siab kub, siab thiab mob corrosiveness ntawm nruab nrab, thiab xyuam xim rau vuam thiab txij nkawm cov qauv.