Dab tsi yog sib luag hloov rau 945 incoloy -} kev paub

1. Dab tsi yog qhov sib npaug hloov rau Incoloy 945?

Sib npaug hloov chaw rau Incoloy 945 yog cov alloys uas phim nws cov khoom tseem ceeb-High tensile lub zog, Kev tiv thaiv zoo heev rau sulfide kev ntxhov siab tawg (SSC) thiab pitting corrosion, thiab sib xyaw nrog qaub (h₂s - nplua nuj) thiab chloride - kev nplua nuj ib puag ncig. Cov hloov pauv no feem ntau ua qauv los ntawm tsis ua, en, lossis tus qauv ntawm tus "} ib qho" {4 4}}} haj} Hardening mechanism.

Txheem / Hom	Alloy Tsim	Cov ntsiab lus tseem ceeb rau Incoloy 945	Txwv (vs. incoloy 945)
Tsis Yog (USA)	UN tsis yog N08925 (Alloy 925)	-} -}} roj chromium puag nrog tooj liab (cu) thiab molybdenum (mo) ntxiv {{0- {- hationening hom (muaj zog los ntawm kev ua haujlwm laus) -} ssc tsis kam thiab corrosion kev ua haujlwm hauv cov roj qaub, roj zoo	Cov chav qis - kub tensile zog (alloy 945: ~ {} {}
En (EU)	En 1.4529 (Alloy 25-6Mo)	- cov chromium siab (20-22%) thiab Molybdenum (6-7%) cov ntsiab lus rau muaj zog pitting / Crevice Corrosion Kuj -}} haum rau chloride -} cov khoom siv nplua nuj thiab tshuaj lom neeg ib puag ncig	Tsis yog nag lossis daus - Hardening Alloy; Yuav tsum tau ua haujlwm txias kom ua tiav lub zog (es tsis txhob muaj kev laus), ua rau qis dua qhov chaw ruaj khov hauv cov nplooj tuab.
Cov txheej txheem tsim	Hastelloy C276	{{0 {}}} Tshwj kev tshwj xeeb corrosion tsis zoo nyob rau hauv kev tawm tswv yim (piv txwv li, cov tshuaj sib xyaw, chloride daws) {{0-} siv nyob rau hauv cov tshuaj hnyav thiab cov ntawv thov pov haum xeeb	Austenitic (tsis- {} {}}}}}}}}}} mpa) thiab tus nqi ntau dua li incoloy 945; Tsis zoo rau cov roj qaub / roj SCSC.
Tsis Yog (USA)	UN tsis yog N07718 (inconel 718)	-} nag lossis daus - hatening alloy nrog siab zog thiab nkees tsis kam -} Tsim nyog rau qhov siab- kub (txog 650℃f) thiab siab-} qhov kev siv siab	Poor resistance to SSC in sour environments; not recommended for oil/gas wells with H₂S concentrations >5% {{{- Ib qho tseem ceeb txwv thiab txwv. Incoloy 945.

info-445-447 info-445-443

2. Dab tsi yog tus qauv tua rau Incoloy 945?

Cov txheej txheem ua tiav rau Incoloy 945 txhais tau kev tsim khoom, kev kho cua sov, kev kuaj xyuas, thiab cov khoom siv ua kom zoo, thiab cov khoom tsis quav ntsej, cov kav dej, phiaj hlau). Cov qauv no kom ua raws li cov qauv kev nyab xeeb, tshwj xeeb tshaj yog rau cov ntawv thov tseem ceeb xws li roj / roj av thiab cov tub rog.

A. Cov Qauv Txheej Txheem Thoob Ntiaj Teb (ASTM / ASME)

ASTM International thiab ASME yog thawj lub cev ua thawj lub cev tswj hwm Incoloy 945, nrog cov qauv ua rau cov khoom lag luam tshwj xeeb:

ASTM B983: Specification tshwj xeeb rauCeg thiab xaimntawm incoloy 945.

Qhov tseem ceeb yuav tsum muaj xws li:

Tshuaj lom neeg muaj kev txwv tshuaj lom neeg txwv (piv txwv li, NI: 42-46%, CR: 19-21%, MO: 4.5-2.5%).

Yuav tsum tau kho cov cua sov: Kev daws annealing (980-1040℃f, laus (620-650℃f, tuav rau 8 teev).

Cov Cuab Yeej Cuab Yeej Cuab Yeej Cuab Yeej Siv: Tensile lub zog (tsawg kawg 1000 MPa), tawm los lub zog (yam tsawg kawg nkaus} MPongation (tsawg kawg 12%) ntawm chav tsev kub.

ASTM B984: Specification tshwj xeeb rauZam tximntawm incoloy 945 (piv txwv li, flanges, lub cev valve, cov khoom siv downhanole).

Qhov tseem ceeb yuav tsum muaj xws li:

Forging ntau (1040-1150℃/ 1904-2102℃f) kom tsis txhob graining grainening.

Tsis - Kev sim tshuaj (NDT): Ultrasonic kuaj (it) rau kev sim sab hauv thiab sib nqus particle.

ASTM B985: Specification tshwj xeeb rauSeamless kav thiab yasntawm incoloy 945.

Qhov tseem ceeb yuav tsum muaj xws li:

Qhov ntev ntev pab tau (piv txwv li, phab ntsa thickness variation tsawg dua los yog sib npaug rau 10% ntawm nominal).

Siab kev sim (hydrostatic xeem ntawm 1.5 × tsim siab) kom paub tseeb tias muaj qhov tseeb.

Corrosion Kuaj: Sulfide Kev Nyuaj Siab Cracking (SSC) Kev sim Per Nace TM0177 (tus qauv kev ntsuas rau Sulfide kev ntxhov siab tawg ntawm cov khoom siv hlau hauv cov kab mob h₂s).

ASME BPVC Ntu Ii, Ntu A: Adyts Astm B983, B984, thiab B985 rau Incoloy 945 siv nyob rau hauvsiab -} Kev siv ceev ceev(piv txwv li, roj / roj ua kom zoo rau cov nkoj).

Cov kev cai ntxiv muaj:

100% traceazebility ntawm cov ntaub ntawv raw (los ntawm melting rau cov khoom kawg).

Thib peb {- tog ntawv pov thawj ntawm kev kho cua sov thiab cov khoom siv tshuab.

B. Cov Qauv Ntxiv Hauv Cheeb Tsam

NACE thoob ntiaj teb (cov roj hauv ntiaj teb / roj tsom):

Thaum tsis yog "cov qauv khoom lag luam," NACE MR0175 / ISO 15156 YUAV TSUM TAU RAU INCOLOY 945 nyob rau hauv cov roj qaub / roj app. Nws qhia:

Qhov siab tshaj plaws h₂s concentration (txog 20%) thiab phua (ntau dua los yog sib npaug rau 4.0) rau kev siv nyab xeeb.

Yuav tsum tau SSC thiab kev nyuaj siab corrosion cracking (SCC) kuaj ua ntej xa tawm.

En (EU): Tsis muaj qhov qauv ncaj qha rau Incoloy 945, tab sis en 10204 (Metallic cov khoom lag luam - Kev kuaj mob) siv. Tus neeg muab khoom yuav tsum muabHom 3.2 daim ntawv pov thawj(ywj siab thib peb -}}}}}}}} {{1} raws cov phiaj xwm.

API (American Petroleum Lub Koom Haum): API 5CT (Cov lus qhia tshwj xeeb rau casing thiab tubing) Cov ntaub ntawv tsim tawm) Nws yuav tsum tau ua raws li Astm B985 Ntxiv Ntxiv Kev Ntsuam Xyuas Kev Xov Kev Xov Xwm (piv txwv li xov gauging thiab torneque kev sim).

C. Yuav tsum tau COLDOSION SCRAMIONING

Muab rau incoloy 945 siv nyob rau hauv cov qauv muaj ib puag ncig, txhua tus qauv ua tiav cov qauv tsim nyog tshwj xeeb kev sim tshuaj tiv thaiv corrosion:

Sulfide kev ntxhov siab tawg (SSC) kuaj: Ib Nace TM0177, Qauv A (Bent - Beam Testion) hauv h}}} {degrutated brine ntawm 25℃/ 77℃F.

Pitt Corrosion: Per ASTM G48, txoj kev a (raug rau ferric chloride tov) kom paub tseeb qhov sib npaug ntawm tus lej (pren ntau dua lossis sib npaug rau cov chloride-nplua nuj tub rog ib puag ncig).

Nruab nrab corrosion (icc) xeem: Per astm A262, Xyaum E (oxidizing acid xeem) kom ntseeg tau tsis muaj nplej - ciam corrosion tom qab kev kho cua sov.

Hauv cov ntsiab lus, Incoloy 945 qhov ze tshaj plaws tsis yog N08925 (Alloy 925) rau cov qauv roj av, nrog rau cov khoom siv nplua nuj, nrog rau cov khoom noj khoom haus kom muaj kev ua haujlwm tseem ceeb.