Nug ob tus neeg muag khoom sib txawv rau "passivate ib tus qauv ASTM" thiab koj tuaj yeem tau txais ob qhov txiaj ntsig sib txawv - vim tias "ASTM cov qauv" rau kev kho qhov chaw stainless hlau txhais tau tias yog ob daim ntawv sib cais uas ua haujlwm rau ob txoj haujlwm. ASTM A380 thiab ASTM A967 yog ob qho tib si luam tawm los ntawm ASTM Pawg A01 thiab ob qho tib si niaj hnub hais txog cov hlau tsis muaj hlau kos duab thiab xaj xaj, tab sis tsis meej pem rau lwm tus yog ib qho ntawm ntau tshaj - thiab feem ntau tshwm sim - specification yuam kev hauv stainless hlau fabrication.
Phau ntawv qhia no piav qhia meej tias txhua tus qauv npog li cas, lawv cuam tshuam li cas rau ib leeg, thiab yuav ua li cas hais lawv thiaj li yuav tsum tau ua raws li qhov yuav tsum tau ua.
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ASTM A380 yog Cov Qauv Txuj Ci - cov txheej txheem dav dav qhia txog kev ntxuav, tshem tawm, tshem tawm, thiab cov lus pom zoo rau austenitic, ferritic, martensitic, thiab duplex stainless hlau. ASTM A967 yog tus qauv Specification - cov ntaub ntawv nqaim, siv tau uas txhais tau kaum qhov kev kho mob tshwj xeeb (tsib txoj kev nitric acid thiab tsib txoj kev citric acid) ntxiv rau cov kev ntsuam xyuas uas siv los ua pov thawj tias qhov chaw tau dhau los. Hauv kev xyaum: suav ASTM A380 los coj cov txheej txheem ntxuav thiab ntxuav, thiab suav ASTM A967 kom qhia thiab txheeb xyuas qhov tshwm sim passivation. Ob qho qauv sib xyaw ua ke, tsis sib tw, thiab ob qho tib si tau kho dua tshiab hauv 2025 los qhia ib leeg, kev sib haum xeeb kev txhais lus ntawm kev ua haujlwm. |
Dab tsi yog qhov txawv ntawm ASTM A380 thiab ASTM A967?
Qhov sib txawv tseem ceeb yog ib yam ntawm cov ntaub ntawv: ASTM A380 yog Cov Qauv Txuj Ci, txhais tau tias nws muab cov lus pom zoo, cov txheej txheem, thiab kev ceev faj rau kev taw qhia, thaum ASTM A967 yog Cov Qauv Txheej Txheem, lub ntsiab lus nws txhais tau tias yuav tsum tau ua, ntsuas qhov yuav tsum tau ua - thiab qhov sib txawv ntawm cov ntaub ntawv hom yog preciseted vim li cas ob qho tib si ntau dua.
Ib qho "Standard Practice" nyob rau hauv ASTM terminology yog ib txheej ntawm cov lus qhia rau kev ua haujlwm - xav tias nws yog phau ntawv qhia. Nws qhia tus neeg tsim khoom yuav ua li cas ntxuav, descaling, thiab pickling feem ntau ua tiav, thiab muab cov txheej txheem qhia tus neeg muag khoom thiab tus neeg yuav khoom tuaj yeem pom zoo thov. A "Standard Specification," los ntawm qhov sib piv, teeb tsa cov txiaj ntsig tau hais tseg, txwv, thiab dhau / tsis ua tiav cov txheej txheem xeem - nws yog cov ntaub ntawv uas tus neeg soj ntsuam zoo siv los txiav txim seb ib feem puas ua raws.
Qhov no yog vim li cas txoj cai kev lag luam ntawm tus ntiv tes xoo tau tshwm sim ntawm kev yuav khoom thiab cov kws ua haujlwm zoo: A380 piav qhia koj li cas ntxuav thiab pickle; A967 txhais thiab ua pov thawj tias koj passivated raug. Kev kho ob qho tib si sib hloov tau yog ib qho kev qhia tshwj xeeb tshaj plaws hauv qhov no ntawm stainless hlau fabrication.
Dab tsi yog ASTM A380 tiag tiag npog?
ASTM A380, lub npe "Txoj Cai Ua Haujlwm rau Kev Tu, Descaling, Pickling, thiab Passivation ntawm Stainless Steel Parts, Cov Khoom Siv, thiab Cov Txheej Txheem" raws li nws cov kev hloov kho 2025, suav nrog tag nrho ua ntej -passivation workflow - tu, descaling, thiab pickling - daim ntawv tso cai, nrog rau kev ua haujlwm dav dav ferritic, martensitic, thiab duplex stainless hlau qib.
Scope: cov lus pom zoo thiab kev ceev faj rau kev tu, descaling, pickling, thiab passivating tshiab stainless hlau qhov chaw, sib dhos, khoom siv, thiab cov tshuab nruab - thiab ntau yam ntawm nws cov txheej txheem kuj tseem siv tau rau cov tshuab uas twb tau ua haujlwm lawm.
Cov ntsiab lus: txhais cov ntsiab lus (suav nrog peb lub ntsiab lus sib txawv ntawm "passivation" kom tsis txhob muaj qhov tsis meej), piav qhia txog degreasing thiab hnyav ntxuav txoj kev, tshuab descaling, tshuaj pickling tsis, thiab passivation chemistry.
Cov ntaub ntawv ntxiv: Annex A1 (Table A1.1) qhia cov txheej txheem pickling los ntawm qib, concentration, thiab lub sijhawm / kub; Annex A2 (Table A2.1) qhia txog cov txheej txheem passivation, txawm hais tias A380 qhia meej meej rau A967 rau ntau daim ntawv teev npe ntawm passivation chemistry.
Qib kev pab: feem ntau yog siv rau austenitic, ferritic, martensitic, thiab duplex stainless hlau, thiab sau tseg nws cov txheej txheem kuj tseem yuav pab tau rau lwm cov hlau nrog kev xav txog tsim nyog.
Vim A380 yog ib qho kev xyaum es tsis yog ib tug specification, nws passivation - hais txog cov ntsiab lus tau nthuav tawm raws li kev taw qhia kom pom zoo ntawm tus neeg muag khoom thiab cov neeg yuav khoom - uas yog vim li cas cov neeg ua haujlwm zoo thiab kev yuav khoom ceev faj tiv thaiv kev hais txog A380 ib leeg raws li kev lees paub lees paub tshwj xeeb ntawm daim duab.
ASTM A967 Puas Yog Dab Tsi?
ASTM A967, lub npe "Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts," txhais kaum qhov tshwj xeeb, tsis muaj tshuaj lom neeg kev kho mob - tsib txoj hauv kev nitric acid thiab tsib txoj kev citric acid - nrog rau cov kev kuaj xyuas uas yuav tsum tau siv los ua pov thawj tias qhov chaw passivated tau ua tau raws li cov qauv kev lees paub.
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Tsev Neeg Kho Mob |
Cov txheej txheem |
Cov yam ntxwv dav dav |
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Nitric acid passivation |
Nitric 1 txog Nitric 5 |
Concentrations feem ntau 20-50% los ntawm ntim; Cov kev ntsuas sib txawv raws qib thiab cov qauv ntawm A967 cov txheej txheem cov lus |
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Citric acid passivation |
Citric 1 txog Citric 5 |
Concentrations feem ntau 4-10% los ntawm qhov hnyav; tus neeg ua haujlwm me me-kev nyab xeeb thiab ib puag ncig tawm profile dua li cov txheej txheem nitric |
Raws li ASTM A967 / A967M qib -cov lus tshwj xeeb txheej txheem. Concentration, kub, thiab immersion lub sij hawm sib txawv los ntawm stainless qib - ib txwm paub meej txog cov txheej txheem tshwj xeeb tsis tiv thaiv tam sim no - tsab qauv ua ntej qhia.
A967 lub ntsiab lus tseem ceeb - ib qho uas ua rau nws "zoo rooj vag" ntawm ob tus qauv - yog nws cov suite ntawm yuav tsum tau kuaj xyuas: dej immersion, high humidity, ntsev tsuag, tooj liab sulfate, poov tshuaj ferricyanide-nitric acid (ferroxyl), thiab ib tug dav dav dawb hlau kuaj. Cov lus qhia tshwj xeeb xws li "Passivate per ASTM A967, Nitric 2, txheeb xyuas los ntawm Practice D" muab tus neeg tsim khoom thiab tus neeg soj ntsuam xyuas qhov tseeb, kuaj tau; lub callout uas yooj yim hais tias "passivate" tsis.
Tus qauv twg yuav tsum tshwm sim ntawm kev yuav khoom lossis kos duab engineering?
Ob qho qauv feem ntau yog nyob rau hauv ib lub qhov dej- sau ntawv los yog yuav daim ntawv xaj, tab sis lawv teb cov lus nug sib txawv: ASTM A380 tswj hwm qhov welded los yog cua sov li cas -tinted qhov chaw yuav tsum tau ntxuav thiab khaws cia ua ntej, thaum ASTM A967 tswj xyuas qhov kev kho mob passivation siv thiab yuav ua li cas nws txoj kev vam meej yuav raug txheeb xyuas - thiab ib qho kev qhia tshwj xeeb, tsuas yog ob lub cites, thiab tsuas yog ib lub cites txaus chav rau tus neeg muag khoom siv txhua yam txheej txheem uas lawv xav tias tsim nyog.
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Hu rau |
Dab tsi Nws Tiag Guarantees |
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"Passivate rau ASTM tus qauv" |
Tsis muaj dab tsi ua tau - tsis muaj tus qauv qhia tau tseeb, thiab tus neeg xa khoom tuaj yeem siv cov txheej txheem uas lawv xav tias tsim nyog |
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Passivate rau ASTM A380 |
Tsis muaj zog - A380 yog ib qho kev xyaum, tsis yog ib qho kev qhia tshwj xeeb, thiab tsuas yog muab cov kev taw qhia dav dav es tsis yog ib qho kev txiav txim siab, kuaj tau |
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Passivate rau ASTM A967, Nitric 2 |
Muaj zog - ib qho tshwj xeeb, txhais tau hais tias kev kho tshuaj lom neeg nrog qhov ntsuas qhov ntsuas, ntsuas kub, thiab lub sijhawm |
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"Pickle rau ASTM A380; Passivate rau ASTM A967, Citric 4; Txheeb xyuas los ntawm Xyaum D" |
Cov txheej txheem ua tau tiav - kev taw qhia, kev kho mob uas tau hais tseg, thiab cov txheej txheem pov thawj yuav tsum tau teev tseg |
Hom ntawv raws li kev pom zoo kos duab thiab RFQ callout xyaum rau stainless hlau fabrication procurement. Cov lus hais tsis muaj zog lossis tsis meej pem yog qhov ua rau tau txais cov khoom uas tau ua raws li txheej txheem tab sis ua haujlwm raws li -passivated.
Yuav Ua Li Cas Ob Qhov Kev Ntsuas 'Kev Ntsuas Kev Ntsuas Sib Piv?
ASTM A967 muaj cov thawj, yuav tsum suite ntawm passivation verification xeem, thiab ASTM A380 meej meej hla -references A967 rau cov ntsiab lus no es tsis yog duplicating ib tug cais kev xeem system - txhais tau tias ib tug neeg muag khoom ua hauj lwm los ntawm ib tug txheej txheem yuav tsum tau thaum kawg yuav tsum tau ua tib yam nyob rau hauv cov ntaub ntawv kev lees paub.
Dej raus dej: submerges qhov chaw hauv dej thiab tshuaj xyuas rau xeb staining qhia tias tsis muaj hlau seem.
Cov av noo siab: nthuav tawm qhov chaw mus rau qhov tswj tau siab - ib puag ncig cov av noo thiab tshuaj xyuas kev xeb.
Cov tshuaj tsuag ntsev: nthuav tawm qhov chaw mus rau cov dej ntsev hauv cov huab cua kom nrawm thiab nthuav tawm latent corrosion susceptibility.
Copper sulfate: siv cov tshuaj acidified tooj liab sulfate; coppery deposit qhia tias tsis muaj hlau seem (tsis siv tau ntawm 400-series qib qis dua 16% chromium).
Potassium ferricyanide-nitric acid (ferroxyl): feem ntau siv rau welds; xiav me ntsis qhia tias dawb hlau tsis muaj paug uas passivation tsis tshem tawm.
Kev kuaj hlau dawb: ib txoj hauv kev tshuaj ntsuam xyuas dav dav kom kuaj tau cov hlau tsis muaj paug.
A380 tus kheej cov ntawv taw qhia rau tus nyeem ntawv rau A967 rau cov npe dav dav ntawm cov khoom siv hluav taws xob tau txais txiaj ntsig thiab lawv cov kev xeem sib raug zoo, tsis yog tswj hwm txoj cai tswj hwm kev ywj pheej tag nrho - uas yog qhov ua piv txwv muaj zog ntawm qhov ob tus qauv tsim los ua haujlwm ua ke es tsis yog kev sib tw.
Dab tsi hloov pauv hauv 2025 Kev Hloov Kho ntawm A380 thiab A967?
Kev hloov kho 2025 ntawm ob tus qauv sib haum xeeb rau lawv cov kev txhais lus ntawm passivation thiab nthuav dav A380 lub npe thiab cov peev txheej kom meej meej suav nrog kev xaiv - kev hloov pauv uas txo, tab sis tsis tshem tawm, lub peev xwm rau ob daim ntawv nyeem tsis sib haum nrog ib leeg.
Unified passivation txhais: ob qho tib si qauv tam sim no siv tib seem 3.2.4 lub ntsiab lus ntawm passivation, tshem tawm qhov ntev ntawm qhov tsis meej ntawm ob cov ntaub ntawv.
A380 hloov lub npe: tus qauv lub npe tau nthuav dav mus rau "Txoj Cai Kev Tu, Descaling, Pickling, thiab Passivation ntawm Stainless Steel Parts, Equipment, thiab Systems," qhia meej naming pickling raws li lub ntsiab lus them es tsis tso nws implicit hauv "descaling."
Nthuav cov ntsiab lus nthuav dav: A380's Tshooj 3 (Terminology) tam sim no muab peb lub ntsiab lus sib txawv uas cuam tshuam nrog lo lus "passivation" hauv kev siv ib txwm, pab cov neeg yuav khoom hauv lub xeev meej uas lub ntsiab lus lawv xav tau thaum qhov yuav tsum tau teev tseg.
Vim tias cov qauv ASTM tau hloov kho nyob rau lub voj voog tsis tu ncua, xyoo ib tsab ntawv yuav tsum nco ntsoov suav nrog hauv daim duab lossis daim ntawv xaj xaj xaj - piv txwv li, "ASTM A967-23" es tsis yog qhov tsis tsim nyog siv rau "ASTM A967" - kom tsis txhob muaj kev tsis sib haum xeeb txog qhov tsab ntawv yuav tsum tau tswj hwm ib qho kev txiav txim.
Koj Puas Xav Tau Ob Tus Qauv rau Ib Txoj Haujlwm Fabrication?
Yog lawm, rau feem ntau welded stainless steel fabrications - vim A380 hais txog ua ntej -passivation tu thiab pickling cov kauj ruam uas tshem tawm cov cua sov thiab nplai, thaum A967 hais txog kev kho mob thiab kev pov thawj uas ua raws li, thiab hla ib nrab ntawm cov kab ke no feem ntau tawm ntawm cov ntaub ntawv sib txawv hauv cov ntaub ntawv corrosion-protection
Ib qho welded fabrication nrog pom thaum tshav kub kub tint xav tau cov pickling kev taw qhia nyob rau hauv A380 kom tshem tawm cov cua sov tint thiab lub hauv paus chromium -depleted txheej ua ntej passivation yuav ua tau zoo - passivating tshaj unremoved tshav kub tint tsis rov qab tag nrho corrosion kuj nyob rau hauv lub tshav kub - cuam tshuam cheeb tsam. Thaum pickling tiav, A967 tswj hwm kev kho mob nws tus kheej thiab muab cov kev lees paub uas ua pov thawj qhov tshwm sim.
Peb tus khub kab lus, Pickling thiab Passivation ntawm Stainless Steel Fabrications: Ua tiav Kev Ua Haujlwm, taug kev los ntawm tag nrho rau - theem ua ntu zus - degreasing, pickling, rinsing, passivating, rinsing thiab drying, thiab pov thawj - hauv kauj ruam -los ntawm - kauj ruam nthuav dav.
Yuav ua li cas yog tias koj qhia tsuas yog "Passivate rau ASTM Standards"?
Ib qho tsis tsim nyog hu xov tooj xws li "passivate per ASTM cov qauv" yog qhov ua tau zoo, vim tias nws tsis muaj npe tshwj xeeb, tsis muaj kev kho mob, thiab tsis muaj kev kuaj xyuas - tawm hauv tus neeg muag khoom pub dawb los siv cov txheej txheem uas lawv xav tias tsim nyog, thiab tawm hauv tus neeg yuav khoom tsis muaj kev cog lus tsis lees txais ib feem uas tom qab ntawd qhia txog corrosion hauv kev pabcuam.
Tsis muaj chemistry txhais tau tias: tsis muaj ib txoj hauv kev hais (piv txwv li, Nitric 2 lossis Citric 4), tus neeg muag khoom tuaj yeem xaiv qhov concentration, kub, thiab lub sijhawm raus dej ntawm lawv tus kheej txiav txim siab.
Tsis muaj kev txheeb xyuas qhov tseeb: yam tsis muaj qhov ntsuas ntsuas, tsis muaj ntaub ntawv pov thawj tias kev kho mob passivation tau lees paub tias ua haujlwm.
Tsis muaj lub hauv paus rau kev tsis lees paub: yog tias ib feem cuam tshuam rau hauv kev pabcuam, qhov tsis meej meej tshwj xeeb muab rau tus neeg yuav khoom me me kev cog lus, txij li tus neeg muag khoom tuaj yeem thov kom lawv ua raws li "ib" txheej txheem lees paub.
Tsis muaj traceable Certificate of Conformance: ib daim ntawv teev npe kom raug muab rau tus neeg muag khoom ib yam dab tsi tshwj xeeb los lees paub; ib tug ambiguous tsis.
Kev kho yog ncaj nraim thiab tsis raug nqi ntau dua li ob peb lo lus ntxiv ntawm daim duab: npe tus qauv tseeb, tus qauv tseeb hauv tus qauv ntawd, thiab kev ua pov thawj tseeb yuav tsum tau - qib ntawm qhov tshwj xeeb tau tham hauv Tshooj 4 saum toj no.
Cov lus nug nquag
Q: Puas yog ASTM A380 passivation specification?
A: Tsis yog ntawm nws tus kheej. ASTM A380 yog Cov Qauv Txuj Ci uas muab kev ntxuav dav dav, tshem tawm, tshem tawm, thiab kev taw qhia passivation. Kev taw qhia kev lag luam los ntawm cov kws tshaj lij thiab cov kws tshaj lij kev muag khoom pom zoo hais txog ASTM A967 - Cov Qauv Qhia Tshwj Xeeb - rau qhov yuav tsum tau ua dhau los thiab nws cov ntawv pov thawj.
Q: ASTM A967 puas tuaj yeem siv yam tsis muaj ASTM A380?
A: Yog lawm, rau qhov chaw uas tsis tas yuav pickling - piv txwv li, machined Cheebtsam uas tsis muaj cua sov los yog nplai. A967 ib leeg tuaj yeem tswj hwm kev kho mob passivation thiab nws cov ntawv pov thawj. Rau welded fabrications nrog pom thaum tshav kub kub tint, A380's pickling kev taw qhia feem ntau xav tau ua ntej.
Q: 'Nitric 2' lossis 'Citric 4' txhais li cas hauv ASTM A967 callout?
A: Cov no xa mus rau cov txheej txheem kev kho mob tshwj xeeb uas tau teev tseg hauv ASTM A 967 - tsib txoj kev nitric acid (Nitric 1–5) thiab tsib txoj kev citric acid (Citric 1–5), txhua qhov nws muaj nws tus kheej concentration, kub, thiab lub sij hawm immersion. Kev hais txog txoj kev tshwj xeeb tshem tawm qhov tsis meej meej txog qhov kev kho mob twg siv.
Q: Puas yog ASTM A380 thiab A967 tau siv los txhais cov passivation txawv?
A: Ua ntej lawv qhov kev hloov kho xyoo 2025, ob tus qauv 'passivation- hais txog hom lus tau tsim kho me ntsis ntawm nws tus kheej. Cov kev hloov kho xyoo 2025 tau sib haum xeeb ntawm ob cov ntaub ntawv nyob ib ncig ntawm ib qho kev txhais, pom nyob rau hauv Tshooj 3.2.4 ntawm txhua tus qauv, txo cov peev xwm rau kev tsis sib haum xeeb.
Q: Tus txheej txheem twg tswj xyuas cov kev xeem uas siv los ua pov thawj passivation ua haujlwm?
A: ASTM A967 muaj cov txheej txheem tseem ceeb ntawm kev ntsuas pov thawj - dej raus dej, cov av noo siab, tshuaj tsuag ntsev, tooj liab sulfate, potassium ferricyanide-nitric acid, thiab kuaj dawb hlau. ASTM A380 hais txog tib cov ntsiab lus ntsuas no ntau dua li kev tswj hwm cov txheej txheem kev lees paub.
