Weld Overlay Flange

A weld overlay flangeyog forged flange nrog corrosion-resistant alloy txheej tso rau ntawm cov kua- sib chwv los ntawm vuam. Lub hauv paus flange nqa siab load thiab bolting quab yuam, thaum lub CRA overlay txheej tiv thaiv lub bore, sealing lub ntsej muag, RTJ zawj, caj dab hloov, los yog lwm yam wetted qhov chaw los ntawm corrosive media.

Cov qauv no yog siv thaum tus qauv carbon steel los yog cov hlau tsis tshua muaj hlau flange muaj lub zog txhua yam, tab sis cov txheej txheem sab yuav tsum muaj zog corrosion kuj. Cov kev pabcuam ib txwm muaj xws li cov pa roj qaub, CO₂- muaj cov pa roj, kev txhaj tshuaj hauv dej hiav txwv, cov dej tsim tawm, chloride- cov kua dej, cov khoom siv hluav taws xob, cov txheej txheem petrochemical, thiab kev sib txuas ntawm ntug dej hiav txwv.

Piv nrog rau cov khoom flange, weld overlay tso cai rau peb tes num siv corrosion-resistant alloy tsuas yog nyob rau qhov yuav tsum tau kev sib cuag. Qhov no pab tswj cov khoom siv nqi thaum ua kom lub cev flange muaj zog txaus rau chav kawm siab. Cov khoom siv Octal Steelweld overlay forged flangeshauv weld caj dab, qhov muag tsis pom kev, RTJ, plam-ntawm, thiab kev cai kos duab- raws li hom, suav nrogAlloy 625 / Inconel 625 Weld Overlay Flange, Alloy 825, 316L, 904L, duplex stainless hlau, thiab super duplex stainless hlau overlay xaiv.

Lub weld overlay flange yog tsim los ntawm ob lub tshuab khoom. Lub hauv paus forging muab txhua yam muaj zog, siab ntsuas, flange geometry, thiab bolting stability. Cov khoom siv overlay muab kev tiv thaiv corrosion ntawm sab wetted.

Cov ntaub ntawv hauv paus muaj xws li ASTM A105 rau cov qauv carbon steel forged flanges, A350 LF2 rau qis- kev pabcuam kub, A694 F52 / F60 / F65 / F70 rau siab - cov tshuab xa hluav taws xob, thiab A182 qib rau alloy steel, stainless hlau, duplex, lossis super duplex forged flanges.

CRA overlay alloy yuav tsum raug xaiv raws li qhov tseeb txheej txheem nruab nrab. Nqe ib leeg tsis yog qhov kev xaiv nyab xeeb. H₂S, CO₂, chloride concentration, kev khiav hauj lwm kub, siab, dej cov ntsiab lus, pH, oxygen ingress, thiab txuas piping khoom yuav cuam tshuam rau qhov kawg khoom xaiv.

Rauflange cladding weld overlaytej yaam num, lub overlay alloy yuav tsum tau raws li qhov txuas txuas. Yog hais tias lub flange txuas nrog clad yeeb nkab, CRA-kab yeeb nkab, yeeb nkab overlay, corrosion-resistant valve, spool, los yog manifold, lub overlay ciam teb yuav tsum tau tshuaj xyuas kom tsis txhob muaj cov pa roj carbon steel tsis raug rau txoj kev ntws.

Qhov chaw overlay tsis yog ib qho me me. Nws txiav txim siab tus nqi, machining nyiaj pub dawb, tshuaj ntsuam xyuas, thiab seb lub flange puas tuaj yeem tiv thaiv qhov ntub dej. Daim ntawv yuav khoom hais tias "CRA overlay xav tau" feem ntau tsis txaus. Daim duab kos yuav tsum qhia raws nraim qhov twg yuav tsum tau weld overlay txheej.

RTJ weld overlay flanges xav tau kev saib xyuas ntxiv. Lub nplhaib zawj yog qhov chaw sib khi, tsis yog lub tshuab ua haujlwm nkaus xwb. Tom qab overlay thiab zaum kawg machining, qhov zawj yuav tsum tau kuaj xyuas qhov loj me, qhov chaw saum npoo, PT tshwm sim, thiab qhov seem ntawm cov thickness.

Rau tsa lub ntsej muag flanges, qhov chaw sib cuag gasket yuav tsum tau tswj xyuas tom qab kev sib ntsib zaum kawg. Lub ntsej muag du CRA txheej tsis txaus yog tias lub ntsej muag sealing flatness, tiav, lossis tuab tom qab machining tsis tau raws li qhov yuav tsum tau ua.

Kev tsim khoom ntawmweld overlay forged flangesyog txawv ntawm qhov zoo tib yam flange machining. Cov txheej txheem yuav tsum xav txog kev siv vuam dilution, machining pub nyiaj, qhov kawg chemistry, thiab sealing nto geometry tib lub sijhawm.

Txoj kev tsim khoom siv tau ib txwm suav nrog cov kauj ruam hauv qab no:

1. Lub hauv paus forging tshuaj xyuas
Cov khoom siv lub cev flange, tus lej xov tooj cua sov, tus qauv forging, chav kawm siab, hom ntsej muag, thiab MTC raug tshuaj xyuas ua ntej pib ua haujlwm overlay. Cov kauj ruam no tau lees paub tias lub hauv paus flange nws tus kheej sib phim qhov kev txiav txim yuav khoom thiab qhov project kos duab.

2. Overlay-zone thiab machining tso cai pom zoo
Lub ntsej muag, tsa ntsej muag, RTJ zawj, qhov muag tsis pom lub ntsej muag, lub caj dab hloov, lossis lwm qhov chaw ntub dej raug tshuaj xyuas ntawm daim duab. Kev them nyiaj txaus machining yuav tsum tau npaj kom qhov kawg machined nto tseem khaws cov txheej txheem CRA.

3. WPS / PQR thiab muab tub lim hlau npaj
Cov txheej txheem weld overlay, muab tub lim hlau, vuam txheej txheem, cov khoom siv hluav taws xob ntau, txheej txheej txheej, thiab cov txheej txheem vuam yuav tsum tau npaj ua ntej ntau lawm. Qhov no tseem ceeb tshwj xeeb tshaj yog rau Alloy 625, Alloy 825, duplex, thiab super duplex overlay ua haujlwm.

4. CRA weld overlay deposition
CRA txheej yog tso los ntawm cov kws tsim nyog welding lossis cov neeg ua haujlwm vuam. Multi- txheej txheej yog feem ntau siv vim tias thawj txheej tuaj yeem diluted los ntawm lub hauv paus hlau. Qhov kev lees txais zaum kawg yuav tsum yog nyob ntawm qhov chaw tiav tom qab machining.

5. Kev tu nruab nrab thiab kev tswj qhov muag pom
Kev ntxuav ntawm kev hla yuav pab kom tsis txhob muaj slag, paug, tsis muaj fusion, thiab qhov chaw tsis xws luag. Cov kauj ruam no tsis yog kev kho kom zoo nkauj; nws feem ntau txiav txim siab seb tom qab PT kev tshuaj ntsuam xyuas yuav dhau mus kom huv.

6. PWHT tshuaj xyuas thaum xav tau
Qee cov ntaub ntawv hauv paus lossis qhov project specifications yuav xav tau tom qab-weld heat treatment. PWHT yuav tsum tau tshuaj xyuas ua ntej kev tsim khoom vim tias nws tuaj yeem cuam tshuam qhov hardness, kev tswj qhov ntev, thiab kev tshuaj xyuas zaum kawg.

7. Rough machining thiab zaum kawg machining
Tom qab overlay welding, lub flange yog machined rau qhov kawg bore, tig, RTJ zawj, ntsia liaj qhov rooj qhov, thiab sealing qhov ntev. Qhov no yog qhov chaw tsim khoom tsis tu ncua tuaj yeem tshem tawm cov khoom siv CRA ntau dhau. Qhov tsawg kawg nkaus ua tiav overlay thickness tseem yuav tsum tau khaws cia tom qab theem no.

8. Kev tshuaj xyuas zaum kawg thiab tshuaj xyuas cov ntaub ntawv
PT, PMI, hardness, ferrite, kev tshuaj xyuas qhov ntev, thiab kev kuaj xyuas saum npoo yog ua raws li qhov yuav tsum tau ua. Cov ntawv ceeb toom yuav tsum tau sib phim nrog flange marking, cua sov tooj, thiab cov ntawv ntim khoom ua ntej xa khoom.

Rau kev piav qhia dav dav ntawm cov txheej txheem weld overlay hla cov yeeb nkab, flange thiab phaj khoom, saib pebweld overlay phau ntawv qhia.

Rau weld overlay flanges, kev tshuaj xyuas yuav tsum ua pov thawj ob yam: lub hauv paus flange ua tau raws li cov kev xav tau ntawm txhua yam thiab qhov ntev, thiab CRA overlay ua tau raws li kev tiv thaiv corrosion - kev pabcuam. Yog tias ob sab tsis muaj zog, lub flange yuav ua tsis tiav qhov kev lees txais.

PMI tom qab machiningtshwj xeeb yog qhov tseem ceeb. Yog tias PMI tsuas yog ua tiav ua ntej machining kawg, nws yuav tsis tuaj yeem sawv cev rau qhov chaw uas yuav hu rau cov txheej txheem nruab nrab. Rau qaub lossis chloride- kev pabcuam kabmob, qhov kawg machined CRA nto yog qhov tseem ceeb tshaj plaws.

Rau kev xa khoom xa tuaj, cov ntaub ntawv sib piv yog ib feem ntawm kev tswj xyuas zoo. Cov xov tooj cua sov, daim ntawv pov thawj cov ntaub ntawv pov thawj, cov hlau nplaum sib tshooj, PMI daim ntawv qhia, PT daim ntawv qhia, cov ntawv ntim khoom, thiab cov cim flange yuav tsum txuas kom meej. Qhov no txo ​​qhov kev pheej hmoo ntawm kev tau txais kev tshuaj xyuas ncua los ntawm cov ntaub ntawv ploj lossis tsis sib xws.

Weld overlay flanges yog siv nyob rau hauv qhov chaw flange lub cev xav tau lub zog siab, tab sis cov kua dej -sab saum npoo yuav tsum tiv thaiv corrosion los ntawm qaub roj, chloride- bearing dej, seawater, acidic media los yog aggressive txheej txheem kua. Tsis zoo li ib txwmweld ntawm flangexaiv tsuas yog rau cov yeeb nkab kev sib txuas thiab cov chav kawm siab, lub weld overlay flange yuav tsum tau tswj lub CRA nto raug rau nruab nrab.

• Qos roj ntau lawm thiab sib sau ua ke systems

Hauv H₂S- muaj cov kev pabcuam, lub cev flange yuav xav tau cov pa roj carbon steel lossis cov hlau tsis tshua muaj zog, thaum lub qhov ntub dej xav tau kev tiv thaiv CRA. Alloy 625 overlay feem ntau tshuaj xyuas rau hom kev pabcuam no. Kev tswj hwm hardness, HAZ mob, thiab NACE MR0175 / ISO 15156 yuav tsum tau kuaj xyuas ua ntej ntau lawm.

• Seawater txhaj tshuaj thiab tsim cov kab dej

Cov dej hiav txwv thiab cov dej uas tsim tawm tuaj yeem muaj cov tshuaj chlorides, cov roj yaj, cov xuab zeb, nplai thiab lwm yam kev tsav tsheb corrosion. Npog overlay, tsa lub ntsej muag thiab lub caj dab hloov pauv kev sib tshooj pab txo qis kev pheej hmoo ntawm cov pa roj carbon steel ntawm cov kua dej -qhov chaw sib cuag.

• Offshore thiab subsea interfaces

Offshore tej yaam num feem ntau xav tau kev soj ntsuam nruj dua thiab cov ntaub ntawv. RTJ grooves, gasket ntsej muag, manifold kev sib txuas, valve interfaces thiab compact spool kev sib txuas yuav xav tau PMI, PT, hardness test, ferrite test, seem soj ntsuam thiab thib peb - tog neeg tim khawv cov ntsiab lus.

• Refinery thiab petrochemical txheej txheem kab

Acid txheej txheem xov xwm, chloride- muaj cov kua dej, siab - cov kwj dej kub thiab qhov chaw sib xyaw corrosion tej zaum yuav xav tau kev tiv thaiv CRA ntawm flange wetted nto. Weld overlay tso cai rau peb tes num siv tus txheej txheem siab- bearing flange lub cev thaum txhim kho corrosion kuj qhov nruab nrab tau hu rau cov khoom.

• Clad yeeb nkab, CRA-kab yeeb nkab thiab manifold txuas

Weld overlay flanges feem ntau yog siv nrog clad yeeb nkab, CRA-kab yeeb nkab, weld overlay yeeb nkab, li qub, spools thiab manifolds. Cov cheeb tsam overlay yuav tsum ua raws li cov khoom sib txuas kom cov corrosion-tiv taus txoj kev tseem nyob tas mus li.

Octal Hlautxhawb cov txheej txheem no los ntawm kev tshuaj xyuas cov ntaub ntawv mus rau kev tso tawm khoom xa tuaj. Peb pab ua kom lub hauv paus flange qib, overlay alloy, tiav overlay thickness, tig hom, RTJ groove yuav tsum tau, thiab tshuaj ntsuam xyuas ua ntej pib ntau lawm, yog li cov flange xa ​​tau yooj yim dua los xyuas thaum tau txais kev tshuaj xyuas.

Peb qhov txiaj ntsig tsis yog tsuas yog khoom siv ntau, tab siskev sib koom tes ua haujlwm: forged flange sourcecing, CRA overlay tswj, zaum kawg machining, PMI / PT / hardness tshuaj xyuas, thib peb- pab pawg neeg soj ntsuam, thiab xa cov ntaub ntawv npaj tuaj yeem tswj hwm hauv ib qho khoom siv. Qhov no txo ​​qhov kev pheej hmoo ntawm cov ntaub ntawv tsis sib xws, tsis paub meej txog qhov sib tshooj, cov ntawv ceeb toom ploj lawm, lossis kev sib khi - ntsej muag puas tsuaj ua ntej xa khoom.

Rau kev txiav txim xa tawm, Octal Steel tseem them nyiaj rau kev ntim khoom tiv thaiv rau cov khoom siv, RTJ grooves, tsa ntsej muag, ntsia liaj qhov rooj qhov, thiab flange cov cim, pab cov flange tuaj txog nrog ob qho tib si cov khoom thiab cov ntaub ntawv pob npaj rau kev tshuaj xyuas qhov project.

Hu rau tam sim no

FAQ

 

01.Dab tsi yuav tsum tau teev thaum xaj weld overlay flanges?

Cov neeg yuav khoom yuav tsum qhia meej txog hom flange, qhov loj me, chav kawm siab, hom ntsej muag, cov khoom siv hauv paus, cov khoom siv sib tshooj, cov cheeb tsam overlay, thiab qhov tsawg kawg nkaus ua tiav overlay thickness tom qab machining. Rau cov kev pabcuam tseem ceeb, PMI, PT, hardness, ferrite test, WPS/PQR, thiab thib peb- cov kev cai tshuaj xyuas tog yuav tsum tau teev nyob rau hauv daim ntawv xaj yuav khoom.

02.Qhov twg ntawm qhov chaw weld overlay flange xav tau CRA overlay?

Cov cheeb tsam uas muaj ntau tshaj yog cov tho, tsa lub ntsej muag, RTJ zawj, caj dab hloov pauv, qhov muag tsis pom flange sab hauv lub ntsej muag, thiab lwm qhov chaw ntub dej uas pom ntawm daim duab. Qhov chaw overlay yuav tsum tau cim kom meej meej vim tias cov pa roj carbon steel nyob rau hauv txoj kev ntws tuaj yeem ua rau muaj kev pheej hmoo corrosion.

03.Vim li cas Inconel 625 siv rau weld overlay flanges?

Inconel 625 / Alloy 625 feem ntau yog xaiv rau cov roj qaub, dej hiav txwv txhaj tshuaj, tsim cov dej, cov kav dej tawm sab nraud, thiab cov tshuaj chloride -cov kev pabcuam. Rau kev lees paub, qhov kawg ntawm lub tshuab overlay yuav tsum tau kuaj xyuas los ntawm PMI lossis tshuaj xyuas tshuaj, vim tias cov khoom siv los ntawm cov hlau tuaj yeem cuam tshuam rau qhov chaw chemistry.

04.Dab tsi yog cov txheej txheem tiav overlay thickness rau weld overlay flanges?

Ntau qhov project qhia qhov tsawg kawg nkaus CRA overlay thickness, feem ntau nyob ib ncig ntawm3.0 hli tom qab machining kawg, tab sis tus nqi tseeb yuav tsum ua raws li qhov project kos duab lossis specification. Lub ntsiab lus tseem ceeb yog txhawm rau txheeb xyuas qhov seem ntawm qhov sib tshooj ntawm qhov ua tiav ntub dej, tsis yog raws li -welded deposit.

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