1. Tus qauv thiab nws cov uas: Dab tsi yog ASME SB348 xaiv, thiab ua li cas Gr1, Gr2, thiab CP4 haum rau hauv?
ASME SB348 yog Asmeskas haiv neeg ntawm cov neeg kho tshuab engineers '(ASME) kev tsim qauv rau "Titanium thiab titanium alloy tuav thiab billets." Nws yog ua haujlwm zoo ib yam rau ASTM B348 tab sis yog saws tshwj xeeb tau siv nyob rau hauv lub asme boiler thiab siab lub siab code (bpvc). Qhov kev saws me nyuam no yog qhov tseem ceeb vim tias nws txhais tau tias nws tau pom zoo rau kev siv hauv cov khoom siv thiab kev tsim kho cov khoom siv, kev hloov pauv cua sov, thiab cov twj tso cua sov.
Cov qib hauv nqe lus nug yog txhua qhov kev lag luam ntshiab (CP) titanium, sib txawv los ntawm lawv lub zog, uas yog tswj los ntawm lawv cov pa oxygen thiab hlau cov ntsiab lus.
GR1 (qib 1): Feem ntau cov cp qib. Muab qhov muaj txiaj ntsig zoo tshaj plaws thiab kev cuam tshuam tawv tab sis lub zog qis tshaj plaws.
Gr2 (Qib 2): Tus qauv thiab feem ntau cov CP qib. Nws muab kev sib npaug ntawm lub zog, ductility, thiab corrosion tsis kam. Nws yog cov haujlwm ua haujlwm ntawm cov txheej txheem tshuaj lom neeg.
CP2: Qhov no yog cov laus dua, cov qauv sau keeb kwm uas tseem ceeb sib npaug rau niaj hnub gr2. Koj feem ntau pom "gr2" ntawm cov ntawv ceeb toom zeb zeb zeb zeb.
CP4 / Gr4 (Qeb 4): Qhov muaj zog tshaj ntawm cov qib CP tsis muaj tseeb. Nws yog siv thaum lub corrosion tsis kam ntawm cov ntshiab titanium, tab sis tus qauv xav tau siab dua muaj zog dua gr2 tuaj yeem muab tau.
Lub "Round Bar" Daim Ntawv yog ib qho tseem ceeb ntawm cov khoom lag luam zoo li cov khoom siv flanges, cov khoom siv hluav taws xob ua tiav, thiab tshuab ntxhua khaub ncaws rau cov khoom siab.
2. Lub siab siab tsimRee tus qauv xaiv: Tus qauv tsim qauv Gr1, Gr2, thiab GR4 rau ib lub nkoj ASME?
Qhov kev xaiv yog qhov kev ua lag luam engineering corrovic engentic engineering
Xaiv ASME SB348 GR1 THAUM:
Qhov siab tshaj plaws corrosion yog qhov tseem ceeb: nws cov xim zoo dua feem ntau txhais cov xov xwm zoo dua thiab muaj ntau dua cov npoo rau kev sib sau ua haujlwm.
Kev muaj muaj muaj mob hnyav: rau cov sib txuas uas yuav tsum tau ua kom txias heev, xws li kev ua kom muaj zog hnyav lossis ua kom muaj zog ntxiv thiab elongation siab yog qhov zoo tagnrho.
Daim ntawv thov tsis yog kev ntxhov siab heev: nws haum rau hauv ob sab hauv, baffles, los yog tubing hauv qis {{0} qhov siab} kev pabcuam siab.
Xaiv ASME SB348 Gr2 Thaum:
Koj xav tau tus qauv "zoo tshaj plaws txhua - Nyob ib ncig ntawm" acter: qhov no yog qhov kev xaiv tsis muaj feem xyuam rau cov ntawv thov. Nws muaj kev sib txuam zoo heev ntawm:
Txaus dag zog rau feem ntau siab -}} khaws cov qauv tsim.
Zoo heev corrosion.
Zoo weldability thiab formability.
Cov ntawv thov raug: Tshuaj Pauv Piping, Cua Sov Hluav Taws Xob Zoo Li, thiab cov hlab ntsha hauv cov kev pabcuam uas muaj feem nrog Chordwater, thiab oxidizing cov kua qaub.
Xaiv ASME SB348 GR4 thaum:
Xav tau lub zog siab dua tab sis ib qho tsis meej: yog tias muaj kev tsim nyog hauv Gr2 tso cai, hloov mus rau kev txo qis hauv phab ntsa tuab, hloov mus rau qhov zoo tshaj plaws corrosion ntawm cov ntshiab titanium.
Txhawm rau kom tsis txhob siv qhov siab dua - tus nqi alloy: nws tau txais txiaj ntsig zoo rau Choj ntawm Alloys zoo li Gr5Oys zoo li Gr5 (TI-6AL-4V).
Cov ntawv thov: Siab -} {{{{}} fasteners qhov chaw gr2 muaj zog tsis txaus.
Tus qauv tsim kawg yog tswj hwm Tshooj II (cov khoom siv tshiab) thiab ntu VIII (cov kev cai tsim muaj rau txhua qib kawm ntawm ntau qhov kub.
3. Corrosion tsis kam nyob rau hauv kev lag luam hauj lwm: yog cov corrosion thaj chaw ntawm cov qib CP sib txawv, thiab ua li cas uas ua rau xaiv xaiv?
Txhua qhov kev lag luam ntshiab titanium qib (GR1, Gr2) tau txais los ntawm tib lub corrosion: ib qho ruaj khov, thiab tus kheej kho cov oxide). Yog li ntawd, lawv qhov dav dav corrosion tsis nyob rau hauv feem ntau ib puag ncig yog qhov zoo heev.
Qhov kev sib txawv tseem ceeb tshwm sim los ntawm kev hloov pauv ntawm Oxide txheej uas tau txais kev ruaj khov, tab sis los ntawm cov khoom siv rau cov neeg siv khoom thiab cov ntaub thaiv cov khoom siv ntawm nws lub zog thiab kev sib luag.
Kuj zoo li erosion - corrosion: inlet impellers (piv txwv li corrosion), Inlet} corrosion), inter} corrosion),
Kuj: hauv kev kaw hluav taws xob nruj (hauv cov gaskets, tso nyiaj) hauv cov kev daws teeb meem kub, txhua cov qib CP tuaj yeem muaj kev phom sij. Txawm li cas los xij, qhov zoo tshaj plaws ntawm gr1 qee zaum muab qhov zoo me ntsis los ntawm kev cia cov khoom siv los deform thiab txo cov nrawm ntawm crevice. Rau kev siv corrosion loj, ib qho palladium - txhim kho qib zoo li Gr7 feem ntau tsim nyog.
Foomrication -} Tsis muaj qhov tsis muaj zog: thaum lub sij hawm vuam thiab sib sau, muaj kev nyuaj siab uas tuaj yeem qhia tau. Nyob rau hauv ib lub xeev ntxhov siab heev, cov khoom siv tuaj yeem raug rau qee cov ntaub ntawv ntawm corrosion, zoo li kev nyuaj siab corrosion (SCC), txawm tias titanium yog qhov muaj zog heev. Lub zog siab dua ntawm Gr4 tau tshwm sim hauv cov kev ntxhov siab ntau dua rau tib lub hom, uas yog qhov kev txiav txim siab hauv kev sib cav sib ceg.
Kev Xaiv Kev Pom Zoo: Rau feem ntau cov kev pab tshuaj tiv thaiv (chlorates, nitrates, nitrates, kev ua haujlwm corrosion), Gr2, thiab Gr4 yog zoo tib yam. Qhov kev xaiv yog li ntawd tsav los ntawm cov neeg siv tshuab tsim khoom dua li qhov sib txawv tseem ceeb hauv cov tshuaj tiv thaiv.
4.
Fabrication ntawm CP Titanium rau Asme Stamp Project yuav tsum nruj dua cov txheej txheem los tswj cov khoom siv cov khoom siv xeb thiab cov khoom siv tshuab.
Vuam (GTaw / TIG yog Txuj Ci):
Zoo heev Weldability: txhua CP qib (GR1, Gr2, Gr4) tau txiav txim siab zoo rau vuam. Lawv tsis yog tus tshaj tawm rau hauv tshaj tawm - Weld cracking.
Qhov uas yuav tsum tau: Kev Tiv Thaiv. Ib qho tseem ceeb tshaj plaws yog tiv thaiv cov mold weld puddle thiab kub} be}} kev sib kis tau los ntawm huab cua (oxygen thiab nitrogen). Qhov no yuav tsum muaj:
Thawj daim thaiv thaiv: siab {{{0} }č}} Kev Purity Argon lossis Helium los ntawm TIG tsau.
Cov ntaub thaiv shield: ib qho cuab yeej txuas nrog rau lub teeb rau dej nyab lub cua sov weld hlaws dai roj.
Rov qab ntxuav kom huv: Lub hauv paus ntawm lub weld yuav tsum tau ntxuav nrog argon kom tiv thaiv oxidation ntawm cov underside.
Muab cov hlau ua tub lim hlau: tus muab tub lim hlau feem ntau phim rau qib pib (piv txwv li, erti-2 rau vuam gr2). Txawm li cas los xij, nws yog ib txwm muaj thiab siv tau los siv cov tub lim hlau ib qib qis hauv lub zog (piv txwv li erti-2 rau vuam gr4) kom ua tiav weld ductility. Qhov no yuav tsum tau teev rau hauv cov txheej txheem vuam tshwj xeeb (WPS).
Txoj Kev thiab Dabtsi Yog Khoov:
Kev tsim cov khaub thuas: Txhua qib CP tiav lawm - tsim. Gr1, nrog nws qhov siab tshaj plaws, yog qhov zoo tshaj plaws rau kev ua haujlwm loj. Gr2 yog haum rau feem ntau khoov thiab sib sau. Gr4, yuav tsum muaj zog tshaj, yuav tsum muaj kev sib zog ntau dua thiab muaj ntau lub nkoj sov.
Kev tsim cov duab kub: rau cov duab kub ntxiv, cov kev sib tw kub yog ua ntawm 425℃- 650℃(800}℃f). Qhov no yuav tsum tau ua nyob rau hauv lub cub tawg nrog ib tug me ntsis oxidizing lossis inert emosphere los tiv thaiv hydrogen tos, uas tuaj yeem yog paj rau lub titanium.
Txhua yam kev ua ub ua no, tshwj xeeb yog vuam, yuav tsum ua raws li qhov tsim nyog WPS rau ib asme Ntu IX.
5. Cov ntaub ntawv pov thawj thiab ntawv pov thawj: Cov ntaub ntawv thiab kev sim ua dab tsi rau ib asme sb348 titanium bar rau siv nyob rau hauv ib tug code- stamped hlab ntsha?
Siv cov khoom siv hauv ib qho kev cai Asme Fress - Stamped vessel yuav tsum ua kom pom tseeb rau cov qauv txheej txheem. Qhov no yog muab los ntawm cov khoom lag luam tsim khoom / cov khoom xa tawm hauv cov ntaub ntawv tshwj xeeb.
1. Daim ntawv pov thawj ntawm kev ua raws cai (C Qhov no yog qib tsawg kawg ntawm kev muaj ntawv pov thawj.
2. Mill Xeem Ntawv Tshaj Tawm (Mtr) / Daim Ntawv Pov Thawj Ntawm Kev Ua Raws: Qhov no yog qhov tseem ceeb thiab feem ntau yog daim ntawv. Ib qho MTTR tsis yog daim ntawv pov thawj yooj yim; Nws yog cov ncauj lus kom ntxaws ntxaws muaj cov kev ntsuas tiag tiag los ntawm cov khoom siv (cua sov) los ntawm qhov bar tau tsim tawm. Nws yuav tsum muaj:
Thaum tshav kub naj npawb: tus cim tshwj xeeb muab tag nrho cov kev sib tw tau txais cov thawj yaj.
Tshuaj Ntsuam Xyuas Tshuaj: Cov txiaj ntsig tiag tiag rau txhua cov ntsiab lus tau teev nyob rau hauv SB348 rau qib (piv txwv li ti, o, F, C, H).
Cov cuab yeej kho tshuab: Qhov tseeb tiag tiag los ntawm cov kev xeem nro, kom muaj zog, elongation lub zog, elongation lub zog) ua rau cov qauv ntawm tib qho kub thiab mob.
Cov kev ntsuam xyuas ntxiv: yog hais tias nyob rau hauv kev txiav txim kev yuav khoom, ua rau kev ntsuam xyuas ntxiv xws li mob ntsws (rau tubing) lossis kev sim tawv) lossis cov khoom siv tawv.
3. Cov lus qhia txog tus kheej: Lub cev ntawm lub cev nws tus kheej yuav tsum tau cim nrog cov ntaub ntawv muaj feem cuam tshuam, feem ntau yog siv qhov tsis txaus ntseeg lossis cov cim npe, suav nrog:
Chaw tsim tshuaj paus lub npe lossis logo
Cov lus qhia tshwj xeeb (piv txwv li, ASME SB348)
Qib (piv txwv li, Gr2)
Thaum Tshav Kub Kub
Qhov loj
Lub nkoj tsim cov nkoj yog lub luag haujlwm rau kev tshuaj xyuas MTR los kuaj xyuas ua ntej cov khoom siv tau siv hauv kev tsim kho. Tus kws kuaj xyuas sawv cev rau "U" lossis "um" Stamp nrog yuav raug tshuaj xyuas cov ntaub ntawv no yog ib feem ntawm lawv cov kev saib xyuas. Qhov uas nruj cov ntaub ntawv ntawm cov ntaub ntawv thiab teeb meem yog qhov tseem ceeb yog rau kev nyab xeeb thiab kev ntseeg tau ntawm asme siab cov khoom siv.
