Inconel 625 Seamless Yeeb Nkab: ASTM B444 Specification, Teem Sijhawm Ntau Yam, thiab Kev Pabcuam Muaj

Dab tsi yog ASTM B444 Tiag Cover rau Inconel 625 Pipe?

ASTM B444 yog tus qauv specification rau txias- ua haujlwm seamless yeeb nkab thiab raj hauv UNS N06625 (Inconel 625), UNS N06852, thiab UNS N06219 - thiab thuam, nws npog cov khoom seamless nkaus xwb; welded Inconel 625 yeeb nkab ntog nyob rau hauv qhov cais ASTM B705 specification, ib qho kev sib txawv uas nquag plooj hauv cov npe lag luam tab sis tseem ceeb rau kev yuav khoom raug.

Cov lus qhia tag nrho lub npe, "Standard Specification rau Nickel-Chromium-Molybdenum-Columbium Alloys (UNS N06625 thiab UNS N06852) thiab Nickel-Chromium-Molybdenum-}Silicon Piav Qhia thiab Tube (UNS) N. ASTM Pawg B02 ntawm Nonferrous Hlau thiab Alloys, Subcommittee B02.07. Cov kev cai dav dav rau cov khoom siv hauv qab B444 ua raws li ASTM B829 (Cov Lus Qhia Dav Dav rau Nickel thiab Nickel Alloy Seamless Yeeb Nkab thiab Tube) tshwj tsis yog cov khoom tshwj xeeb hais txog lwm yam.

Ntawm peb cov alloys them, UNS N06625 (Inconel 625) yog nyob deb ntawm qhov feem ntau xaj; UNS N06219 thiab UNS N06852 tsuas yog teev nyob rau hauv kev daws teeb meem -annealed mob thiab pom deb npaum li cas coj mus muag ntim.

Tau qhov twg los: ASTM B444 muaj pes tsawg leeg txwv rau UNS N06625, raws li luam tawm nyob rau hauv pej xeem muaj peev xwm excerpts ntawm tus qauv.

Ob Qhov Kub Kub yog dab tsi -Qeb Kho Mob Hauv qab ASTM B444, thiab Koj Yuav Qhia Li Cas?

ASTM B444 lees paub ob qhov sib txawv ntawm cov cua sov-kev kho mob rau UNS N06625: Qib 1 (annealed ntawm qhov tsawg kawg nkaus ntawm 1,600℃F / 871 degree), npaj rau kev pabcuam txog 1,100℃F (593 degree), thiab Qib 2 (kev daws teeb meem annealed, 2 / 10 degree, qhov tsawg kawg nkaus ntawm 3. siab dua - qhov kev pabcuam kub qhov twg nkag thiab tawg tsis kam tswj tus tsim.

Qib 1 yog lub neej ntawd, feem ntau raug txiav txim rau Inconel 625 yeeb nkab thiab raj, txij li feem ntau ntawm cov tshuaj -kev ua, marine, thiab roj- thiab- roj daim ntawv thov ua haujlwm zoo hauv qab 1,100℃F. Qib 2 qhov siab dua -kub tshuaj impurities anneal 's dissolves ntau dua theem ntawm alloys. siab -kub creep thiab rupture zog ntawm tus nqi ntawm chav tsev qis dua-kub lub zog - uas yog vim li cas Qib 2 qhia qis qis tensile thiab yield tus nqi qis dua Qib 1 nyob rau hauv cov cuab yeej cuab tam cov lus hauv qab no, txawm tias nws yog qhov kev xaiv raug rau qhov xav tau ntau dua thermal service.

ASTM B444 kuj tso cai rau Qib 2 cov khoom kom tau txais kev xaiv tom qab kev ruaj ntseg anneal ntawm qhov tsawg kawg nkaus ntawm 1,800℃F (982 degree) tshwj xeeb los ua kom muaj zog tiv thaiv kev hnov ​​​​qab, ib qho kev xaiv tsim nyog qhia meej meej ntawm kev yuav khoom yog tias daim ntawv thov cuam tshuam nrog kev sib txuas tom qab los yog aggressive aqueous.

Dab tsi yog cov cuab yeej siv tshuab ua ASTM B444 xav tau?

Qib 1 yuav tsum muaj qhov tsawg kawg nkaus tensile thiab yield zog ntau dua Qib 2 - 120 ksi (827 MPa) tensile thiab 60 ksi (414 MPa) tawm los piv rau 100 ksi (690 MPa) tensile thiab 40 ksi (276 MPa) } feem ntau sib npaug {{ qib 9} kev xav tau.

Tau qhov twg los: ASTM B444, Table 2 (Room-Tsub Tensile Properties thiab Thaum tshav kub kub kho), raws li luam tawm nyob rau hauv pej xeem muaj peev xwm excerpts ntawm tus qauv.

Rau cov kav dej- qauv tsim, tso cai fiber ntau (tsim) qhov kev ntxhov siab tau los ntawm qhov tsawg kawg nkaus no kuj tau teev nyob rau hauv cov lus qhia: 30 ksi (207 MPa) rau Qib 1 thiab 25 ksi (172 MPa) rau Qib 2. Cov no tso cai rau - kev nyuaj siab qhov tseem ceeb 31.3 tsis yog qhov tsawg kawg nkaus rau SME B31.3 txheej txheem piping phab ntsa-thickness xam, yog li qhia qhov tseeb qib pem hauv ntej muaj qhov ncaj, muaj nuj nqis ntawm phab ntsa thickness (thiab yog li qhov hnyav thiab nqi) ntawm cov yeeb nkab tiav lawm.

ASTM B444 tseem sau tseg tias qhov tsawg kawg nkaus lub zog qhov tseem ceeb tsuas yog siv rau cov khoom siv hauv qhov ntev, thiab qhov kub ntawm - tsim - cov yeeb nkab zoo thiab cov tubing (ib qho kev xaiv raws li qhov tshwj xeeb) yog muab rau cov tshuaj muaj pes tsawg leeg thiab qhov chaw- kev tshuaj ntsuam xyuas nkaus xwb, tsis muaj cov cuab yeej tensile lav - qhov sib txawv tsim nyog rau kev txiav txim siab {5} ua ntej kev txiav txim. siab- tuav daim ntawv thov.

Inconel 625 Seamless Pipe Loj npaum li cas - NPS/Schedule vs. Tube OD/Wall?

ASTM B444 npog ob lub yeeb nkab thiab raj raws li ib qho kev qhia tshwj xeeb, tab sis ob daim ntawv khoom yog qhov sib txawv: cov yeeb nkab yog qhov loj los ntawm cov yeeb nkab loj (NPS) thiab tus lej teem sijhawm ib ASME B36.19M (tus qauv stainless thiab npib tsib xee alloy yeeb nkab), hos raj yog qhov loj me ncaj qha los ntawm qhov tseeb sab nraud thiab phab ntsa thickness - qhov sib txawv uas txiav txim siab seb qhov loj npaum li cas.

Qhov no yog ib qho kev tsis sib haum xeeb rau cov neeg yuav khoom txav ntawm cov pa roj carbon- hlau thiab npib tsib xee- cov kav dej hlau.

Cov yeeb nkab xaj raws li "NPS 4, Teem sijhawm 40S" muaj qhov ruaj khov, txheej txheem sab nraud txoj kab uas hla (4.500 in.) thiab phab ntsa tuab los ntawm lub sijhawm teem caij, tsis hais cov hlau twg yog tsim los ntawm - lub sijhawm teem sijhawm muaj tseeb kom cov yeeb nkab ntawm cov khoom sib txawv tab sis tib lub NPS thiab lub sijhawm yuav haum rau tib lub fittings thiab flanges. Tube, los ntawm qhov sib txawv, tau teev tseg raws li qhov tseeb OD thiab phab ntsa tuab khub (piv txwv li, 1.000 hauv. OD x 0.065 hauv. phab ntsa) tsis muaj lub sijhawm teem sijhawm txhua, thiab feem ntau yog cov khoom tsim nyog rau cov cua sov-exchanger tubing, instrumentation kab, thiab lwm yam kev siv uas lub raj nws tus kheej - siv tsis yog bolted.

Lub Sijhawm Teem Sijhawm Dab Tsi Yog Muaj Rau Inconel 625 Seamless Pipe?

Inconel 625 seamless yeeb nkab yog feem ntau tsim nyob rau hauv tib lub sij hawm siv rau stainless hlau yeeb nkab nyob rau hauv ASME B36.19M - feem ntau Teem caij 5S, 10S, 40S, 80S, thiab hnyav XS / XXS phab ntsa designations - nyob rau hauv qhov ntau thiab tsawg los ntawm roughly NPS 1/812 ntau npaum li cas los ntawm NPS { nrog loj thiab hnyav-phab ntsa qhov ntau thiab tsawg tau tab sis raug rau cov kev txwv kev tsim khoom tiag tiag tau tham hauv ntu tom ntej.

Vim tias ASTM B444 yeeb nkab ua raws li tus qauv ASME B36.19M qhov loj me, tib NPS - thiab - cov sij hawm sib txuas ua ke paub los ntawm cov kav hlau stainless siv ncaj qha rau Inconel 625: Teem caij 40S yeeb nkab nyob rau hauv ib qho muab NPS muaj tib lub cheeb sab nraud thiab phab ntsa tuab txawm tias nws yog tsim los ntawm 316L stainless hlau 625 los yog ib qho khoom siv uas twb muaj lawm. stainless hlau piping tsim rau ib tug npib tsib xee alloy rau ib tug ntau corrosive kev pab cuam, txij li thaum haum thiab flange compatibility (dimensionally, tab sis tsis tas nyob rau hauv bolting los yog gasket khoom) yog khaws cia.

Cov txheej txheem tsim khoom dab tsi ASTM B444 Yuav Tsum Tau, thiab Vim Li Cas Nws Tseem Ceeb?

ASTM B444 xav kom txhua yam khoom txias- ua haujlwm - tshwj xeeb txias- rub lossis txias -pilgered - thiab tom qab ntawd kho cua sov rau Qib 1 lossis Qib 2; nws tsis lees txais qhov kub kub- cov khoom tiav tiav raws li tus qauv, mechanically-ua haujlwm tau lees paub, txawm tias tsis muaj kev lees paub kub- tsim- qhov kev xaiv zoo muaj rau tsis yog - tseem ceeb, chemistry- tsuas yog daim ntawv thov.

Kev ua haujlwm txias ua raws li kev tswj xyuas annealing ua rau cov qauv zoo dua, cov qauv zoo dua qub thiab nruj dua qhov ntev ntev dua li qhov kub ua tiav ib leeg, uas yog ib feem ntawm vim li cas B444 cov ntaub ntawv hais kom cov cuab yeej cuab yeej lav tau qhia saum toj no. Qhov kev xav tau no tseem txuas ncaj qha rau cov khoom siv- muaj kev sib tham hauv qab no: txias-pilgering loj- txoj kab uas hla, hnyav-phab ntsa npib tsib xee alloy yeeb nkab yuav tsum muaj ntau lub tshuab tonnage thiab cov cuab yeej tshwj xeeb, thiab cov khoom siv thoob ntiaj teb tau nruab rau txias- ua haujlwm Inconel 625} hauv cov yeeb nkab loj tshaj plaws, tsis muaj qhov loj tshaj plaws, tsis muaj qhov loj tshaj plaws, tsuas yog kev txiav txim siab txog nqi.

ASTM B444 Yuav Tsum Tau Li Cas?

ASTM B444 yuav tsum muaj tshuaj ntsuam xyuas (ib qho kev sim rau ib qho), chav- ntsuas qhov kub thiab txias, ntsuas qhov tawv, ntsuas qhov ntev thiab qhov pom, thiab ib qho kev sim hydrostatic lossis kev ntsuas hluav taws xob tsis zoo (ultrasonic lossis eddy tam sim no kuaj) - muab cov neeg yuav khoom xaiv txoj kev tshuaj ntsuam xyuas uas yuav tsum tau teev meej meej tshaj li qhov kev txiav txim.

• Txheem ASTM B444 xeem suav nrog:Tshuaj muaj pes tsawg leeg - ib qho kev xeem rau ib qho cua sov / ntau, txheeb xyuas cov ntsiab lus txwv hauv cov lus sau saum toj no.
• Txheem ASTM B444 xeem suav nrog:Kev ntsuas nruj (raws li ASTM E8) - lees paub lub zog tensile, yield zog, thiab elongation yam tsawg kawg nkaus rau qib teev.
• Txheem ASTM B444 xeem suav nrog:Kev ntsuas hardness (raws li ASTM E18).
• Txheem ASTM B444 xeem suav nrog:Dimensional soj ntsuam thiab kuaj pom - sab nraud txoj kab uas hla, phab ntsa thickness, sab hauv kab, ntev, ncaj, kawg mob, thiab nto tiav.
• Txheem ASTM B444 xeem suav nrog:Ib lossis ntau qhov kev ntsuam xyuas tsis muaj kev puas tsuaj raws li tau teev tseg - kev ntsuas hydrostatic, kuaj ultrasonic (ASTM E213), lossis kev kuaj tam sim no (ASTM E426/E571).

Rau corrosion-tseem ceeb lossis qaub- daim ntawv thov kev pab cuam, cov neeg yuav khoom feem ntau ntxiv cov kev ntsuas ntxiv uas tsis tau tso cai los ntawm B444 nws tus kheej - intergranular corrosion susceptibility per ASTM G28, pitting thiab crevice corrosion resistance per ASTM G48, los yog nplej-qhov loj pov thawj ntawm ASTM E{7} kev txiav txim yuav tsum tau hu ua ASTM E{7} thiab xeem txoj kev npaj, txij li lawv yog xaiv tau ntxiv rau lub hauv paus specification es tsis yog raws li txoj cai.

Yuav Ua Li Cas Muaj Kev Muaj Peev Xwm Sib Txawv Ntawm Qhov Loj?

Cov me me - thiab nruab nrab -inch Inconel 625 seamless yeeb nkab (kwv yees NPS 1/8 txog NPS 8-12) nyob rau hauv cov sij hawm sib xws yog ntu feem ntau yuav muaj los ntawm cov zeb los yog cov khoom xa tawm nrog cov sij hawm sib piv luv luv, thaum loj dua -}} txoj kab uas hla , qhov hnyav ntawm seam tsis muaj ntau tshaj ntawm tho thiab txias -pilgering mills thoob ntiaj teb nrog lub tonnage thiab tooling los tsim nws - uas yog precisely vim li cas loj-bore Inconel 625 piping tej yaam num nquag tig mus rau ASTM B705 welded yeeb nkab es tsis txhob thawb rau seamless.

Qhov no tsis yog qhov teeb meem ntawm tus nqi ib leeg; nws qhia txog cov txheej txheem tsim khoom ntawm lub cev. Ua loj- txoj kab uas hla seamless yeeb nkab nyob rau hauv lub siab - lub zog, ua hauj lwm- hardening npib tsib xee-chromium- molybdenum alloy yuav tsum tau tho los yog extrusion peev uas tsuas yog ib tug me me ntawm tshwj xeeb mills ntiaj teb no tswj, thiab phiaj los nqis tes teem sij hawm ntawm cov mills quoteless lub hli loj los yog txawv txawv seam txiav txim. cov hnub lossis lub limtiam uas muaj cov khoom me me - tho qhov loj.

Vim Inconel 625 welds zoo heev li -welded corrosion kuj thiab yuav tsum tsis muaj ncej-weld kev kho cua sov los kho nws, ASTM B705 welded yeeb nkab (ze li ib txwm teev nrog 100% radiographic tshuaj xyuas ntawm weld seam) yog ib tug technically suab thiab nyob deb npaum li cas yooj yim kev xaiv rau qhov loj - thiab seam txoj kab uas hla. piercing peev yuav tsawg.

• Cov lus qhia txog kev siv khoom siv:Paub meej tias lub sijhawm ua haujlwm zeb tiag tiag thiab qhov tsawg kawg nkaus xaj kom muaj nuj nqis ua ntej cog lus rau lub sijhawm ua haujlwm - luam tawm "hauv- Tshuag" cov lus thov los ntawm cov neeg xa khoom feem ntau tsuas yog siv rau feem ntau me me - tho qhov ntau thiab tsawg thiab sijhawm.
• Cov lus qhia txog kev siv khoom siv:Rau qhov loj - txoj kab uas hla lossis hnyav hnyav - cov kev cai ntawm phab ntsa, thov cov lus hais rau ob qho tib si ASTM B444 seamless thiab ASTM B705 welded khoom ib sab, vim qhov kev sib txuas welded tej zaum yuav sai dua kom tau txais thiab, rau ntau cov kev pab cuam, mechanically thiab metallurgically sib npaug hauv kev xyaum.
• Cov lus qhia txog kev siv khoom siv:Thov daim ntawv pov thawj zeb kuaj tam sim no (MTC) qauv thiab lees paub daim ntawv pov thawj rau EN 10204 3.1 (lossis 3.2, yog tias tus neeg sab nraud thib peb- yuav tsum ua pov thawj) ua ntej ua tiav qhov kev txiav txim, vim tias cov ntaub ntawv xav tau tuaj yeem cuam tshuam rau tus nqi thiab lub sijhawm ua haujlwm.

Yuav Ua Li Cas Koj Yuav Qhia Tau Inconel 625 Seamless Yeeb Nkab ntawm Kev Yuav Khoom?

Daim ntawv xaj kom tiav, tsis paub meej yuav tsum tau hais txog UNS tus qauv, qhov tseeb ASTM specification thiab qib, qhov loj me (NPS thiab lub sijhawm rau cov yeeb nkab, lossis OD thiab phab ntsa tuab rau raj), ntev, qhov kawg, yuav tsum tau ntawv pov thawj, thiab lwm yam NDT lossis kev kuaj corrosion - tshem tawm ib qho ntawm cov no feem ntau ntawm cov khoom tsis raug tuaj txog ntawm qhov chaw.

• Muab tso rau hauv txhua qhov kev txiav txim yuav khoom:UNS N06625 (los yog lwm yam UNS rau N06852/N06219).
• Muab tso rau hauv txhua qhov kev txiav txim yuav khoom:ASTM B444, thiab qib tshwj xeeb - Qib 1 (annealed) lossis Qib 2 (kev daws teeb meem annealed) - tsis yog "Inconel 625 yeeb nkab."
• Muab tso rau hauv txhua qhov kev txiav txim yuav khoom:Yeeb Nkab: NPS thiab lub sijhawm (piv txwv li, NPS 4, Teem sijhawm 40S). Tube: raws nraim OD thiab phab ntsa thickness (xws li, 1.000 in. OD x 0.065 in. wall).
• Muab tso rau hauv txhua qhov kev txiav txim yuav khoom:Length thiab kam rau ua, thiab seb qhov random lossis txiav - mus rau -ntev ntev yog qhov ua tau.
• Muab tso rau hauv txhua qhov kev txiav txim yuav khoom:Xaus tag (plain kawg, beveled rau vuam, thiab lwm yam).
• Muab tso rau hauv txhua qhov kev txiav txim yuav khoom:Yuav tsum muaj daim ntawv pov thawj zeb xeem (EN 10204 3.1) lossis 3.2) thiab lwm yam NDT ntxiv (ultrasonic, eddy tam sim no, radiographic rau cov khoom welded) lossis kuaj corrosion (ASTM G28, G48).

Ib qho kev qhia meej meej tiv thaiv ob sab ntawm kev lag luam: nws muab cov zeb lossis tus xa khoom txhua yam xav tau los hais txog lub sijhawm thiab tus nqi raug, thiab nws muab cov neeg yuav khoom kom paub meej, tshawb xyuas lub hauv paus rau kev tsis lees paub cov khoom tsis raug ntawm daim ntawv txais nyiaj.

Cov lus nug nquag

Q: Puas yog ASTM B444 npog welded Inconel 625 yeeb nkab?

A: Tsis yog. ASTM B444 npog txias - ua haujlwm seamless yeeb nkab thiab raj nkaus xwb. Welded Inconel 625 yeeb nkab yog them los ntawm cais ASTM B705 specification. Yog tias tus neeg muag khoom sau "ASTM B444 welded yeeb nkab," qhia meej qhov tseeb ua ntej xaj.

Q: Dab tsi yog qhov txawv ntawm Qib 1 thiab Qib 2 raws li ASTM B444?

A: Qib 1 yog annealed ntawm qhov tsawg kawg nkaus ntawm 1,600℃F (871 degree) thiab yog npaj rau kev pab mus txog 1,100℃F (593 degree), nrog rau yam tsawg kawg nkaus tensile/yield zog ntawm 120 ksi (827 MPa) / 60 ksi (414 MPa). Qib 2 yog cov tshuaj annealed ntawm qhov tsawg kawg nkaus ntawm 2,000℃F (1,093 degree) rau siab dua -kub, creep- kev pabcuam, nrog qis qis zog ntawm 100 ksi (690 MPa) / 40 ksi (276 MPa).

Q: Qhov ntau thiab tsawg ntawm Inconel 625 seamless yeeb nkab tau nkag tau?

A: Kwv yees li ntawm NPS 1/8 txog NPS 8-12 nyob rau hauv ntau ASME B36.19M cov sij hawm (5S, 10S, 40S, 80S) yog ntau yam uas yuav muaj los ntawm cov zeb lossis cov khoom xa tawm. Cov kab loj dua thiab cov phab ntsa hnyav dua yog qhov tsim tau tab sis ntsib qhov tsis sib haum xeeb ntawm kev sib tw-muaj peev xwm thiab feem ntau yuav tsum tau siv sij hawm ntev dua zeb.

Q: Kuv puas yuav xaj Inconel 625 ua yeeb nkab lossis raj?

A: Kev txiav txim yeeb nkab (sized los ntawm NPS thiab teem caij rau ASME B36.19M) thaum cov khoom txuas mus rau cov qauv flanges thiab fittings. Kev txiav txim tube (qhov loj me me los ntawm qhov tseeb sab nraud thiab phab ntsa tuab) rau cov cua sov- cov khoom sib pauv, cov khoom siv, lossis lwm yam kev siv uas lub raj nws tus kheej, tsis yog flanged kev sib txuas, yog qhov kawg siv.

Q: Yuav tsum kuaj dab tsi rau ASTM B444 yeeb nkab, thiab dab tsi yog xaiv tau?

A: Kev tshuaj xyuas tshuaj, kev ntsuas nruj, ntsuas qhov tawv, qhov ntsuas qhov pom / pom, thiab ib qho kev sim hydrostatic lossis kev ntsuas hluav taws xob tsis muaj kev puas tsuaj (ultrasonic lossis eddy tam sim no) yog cov kev cai hauv paus. Intergranular corrosion testing (ASTM G28), pitting/crevice testing (ASTM G48), and grain -size verification (ASTM E112) is common adding adds for corrosion-cov kev pabcuam tseem ceeb, tsis yog qhov qub.

Q: Vim li cas loj - txoj kab uas hla Inconel 625 seamless yeeb nkab nyuaj rau qhov chaw tshaj qhov me me?

A: ASTM B444 xav kom tag nrho cov khoom ua kom txias- ua haujlwm (txias- rub lossis txias-pilgered), thiab tsuas yog qee cov mills thoob ntiaj teb muaj cov tonnage thiab cov cuab yeej ua kom txias- ua haujlwm loj - txoj kab uas hla, hnyav - phab ntsa nickel alloy yeeb nkab. Qhov no yog vim li cas loj -dhau Inconel 625 piping tej yaam num nquag qhia ASTM B705 welded yeeb nkab es tsis txhob insisting seamless.