Weld Overlay Flange a wɔde kata so

A weld a wɔde kata so flangeyɛ forged flange a corrosion-resistant alloy layer a wɔde ahyɛ nsu-contact soro denam welding so. Base flange no soa nhyɛso adesoa ne bolting tumi, bere a CRA overlay layer no bɔ bore, sealing face, RTJ groove, kɔn mu nsakrae, anaa mmeae afoforo a ɛyɛ nsu ho ban fi corrosive media ho.

Wɔde saa nhyehyɛe yi di dwuma bere a standard carbon dade anaa low alloy dade flange wɔ mfiri ahoɔden a ɛdɔɔso, nanso adeyɛ fã no hwehwɛ sɛ ahoɔden a ɛko tia nsɛe. Ɔsom tebea a ɛtaa ba ne gas a ɛyɛ akisikuru, mframa a CO2-fra mu, ɛpo mu nsuo a wɔde gu mu, nsuo a wɔayɛ, nsuo a ɛwɔ chloride-a, nsuo a wɔde yɛ nneɛma a wɔde yɛ adwuma, nhama a wɔde yɛ petrochemical process lines, ne nsuo afiri a ɛwɔ mpoano.

Sɛ wɔde toto solid alloy flange ho a, weld overlay ma adwuma no kwan ma wɔde corrosion-resistant alloy di dwuma wɔ contact surface a wɔhwehwɛ no nkutoo so. Eyi boa ma wɔhwɛ nneɛma bo so bere a ɛma flange nipadua no yɛ den sɛnea ɛsɛ ma nhyɛso kuw a wɔhwehwɛ no. Octal Steel nneɛma a wɔde maweld kata forged flanges sowɔ weld kɔn, anifuraefo, RTJ, slip-on, ne amanne mfonini-gyina ahorow, aAlloy 625 / Inconel 625 Weld a wɔde kata so Flange, Alloy 825, 316L, 904L, duplex dade a ɛnyɛ den, ne super duplex dade a ɛnyɛ den overlay options.

Wɔde nneɛma nhyehyɛe abien na ɛyɛ weld overlay flange. Base forging no ma mfiri ahoɔden, nhyɛso rating, flange geometry, ne bolting gyina pintinn. Nneɛma a wɔde kata so no ma ɛko tia nsɛe wɔ ɔfã a ɛyɛ nsu no.

Nneɛma a wɔtaa de gyina nnyinaso so no bi ne ASTM A105 ma standard carbon dade forged flanges, A350 LF2 ma low-temperature service, A694 F52 / F60 / F65 / F70 ma high-pressure transmission nhyehyɛe, ne A182 grades ma alloy dade, stainless dade, duplex, anaa super duplex forged flange ahwehwɛde.

Ɛsɛ sɛ wɔpaw CRA overlay alloy no sɛnea ankasa process medium no te. Bo nkutoo nyɛ ade a ahobammɔ wom a wogyina so paw nneɛma. H2S, CO2, chloride dodow, adwumayɛ mu hyew, nhyɛso, nsu a ɛwɔ mu, pH, oxygen a ɛkɔ mu, ne nneɛma a wɔde fa nsu mu a ɛka bom no nyinaa betumi aka nneɛma a etwa to a wɔpaw no.

Maflange cladding weld a wɔde kata soprojects, ɛsɛ sɛ overlay alloy no nso ne nea ɛka bom no hyia. Sɛ wɔde flange no ne clad pipe, CRA-lined pipe, overlay pipe, corrosion-resistant valve, spool, anaa manifold abɔ mu a, ɛsɛ sɛ wɔsan hwɛ overlay hye no mu sɛnea ɛbɛyɛ a carbon dade a wɔmmɔ ho ban no renkɔ nsuo kwan no so.

Beae a wɔde kata so no nyɛ ade ketewaa bi. Ɛsi ɛka, mfiri a wɔde bɛma, baabi a wɔbɛhwɛ, ne sɛ ebia flange no betumi abɔ ɔfasu a ɛyɛ nsu no ho ban ankasa ho gyinae. Adetɔ krataa a ɛka sɛ "CRA overlay required" taa nnɔɔso. Ɛsɛ sɛ mfonini no kyerɛ baabi pɔtee a wɔhwehwɛ sɛ wɔde weld overlay layer no di dwuma.

RTJ weld overlay flanges hwehwɛ sɛ wɔde adwene si so kɛse. Ring groove no yɛ ade a wɔde kata so, ɛnyɛ profile a wɔde mfiri ayɛ nko. Afei overlay ne machining a etwa to, ɛsɛ sɛ wɔhwɛ groove no kɛse, ɔfasu tebea, PT aba, ne aka overlay thickness.

Wɔ anim flanges a wɔama so no, ɛsɛ sɛ wɔhwɛ gasket contact area no so bere a wɔahwɛ anim awiei koraa no. CRA layer a ɛyɛ mmerɛw a wotumi hu no nnɔɔso sɛ nsɔano anim a ɛyɛ tratraa, wie, anaa ne kɛse wɔ mfiri akyi no ntumi nni mfonini a wɔhwehwɛ no ho dwuma a.

Nneɛma a wɔyɛ noweld kata forged flanges soyɛ soronko wɔ flange mfiri a wɔde di dwuma daa ho. Ɛsɛ sɛ adeyɛ no susuw welding dilution, machining allowance, final chemistry, ne sealing surface geometry bere koro mu.

Mpɛn pii no, ɔkwan a mfaso wɔ so a wɔfa so yɛ nneɛma no ka anammɔn a edidi so yi ho:

1. Base forging nhwehwɛmu
Wɔhwɛ flange nipadua nneɛma, ɔhyew nɔma, forging gyinapɛn, nhyɛso adesuakuw, anim type, ne MTC ansa na overlay adwuma afi ase. Saa anammɔn yi si so dua sɛ base flange no ankasa ne adetɔ order ne project drawing no hyia.

2. Overlay-zone ne mfiri a wɔde ma ho kwan a wɔde si so dua
Wɔasan ahwɛ bore, anim a wɔama so, RTJ groove, anifuraefo mu anim, kɔn mu nsakrae, anaa mmeae afoforo a nsu wɔ wɔ mfonini no so. Ɛsɛ sɛ wɔyɛ nhyehyɛe ma mfiri a wɔde ma a ɛdɔɔso sɛnea ɛbɛyɛ a mfiri a etwa to no da so ara kura CRA layer a wɔhwehwɛ no mu.

3. WPS / PQR ne filler dade ahosiesie
Ɛsɛ sɛ wosiesie weld overlay nhyehyɛe, filler dade, welding nhyehyɛe, ɔhyew input range, layer sequence, ne welder qualification ansa na wɔayɛ. Eyi ho hia titiriw ma Alloy 625, Alloy 825, duplex, ne super duplex overlay adwuma.

4. CRA weld kata so deposition
CRA layer no yɛ nea welders anaa welding adwumayɛfo a wɔfata na wɔde gu hɔ. Wɔtaa de multi-layer overlay di dwuma efisɛ layer a edi kan no betumi ayɛ diluted denam base metal no so. Ɛsɛ sɛ wogyina nea etwa to a wogye tom no gyina ɔfasu a wɔawie no so bere a wɔayɛ mfiri awie no.

5. Mfinimfini ahotew ne aniwa sohwɛ
Sɛ wohohoro mmeae a ɛtwam no ntam a, ɛboa ma wɔkwati slag, efĩ, fusion a enni hɔ, ne sintɔ ahorow a ɛwɔ soro. Saa anammɔn yi nyɛ adwuma a wɔde siesie fie; ɛtaa si gyinae sɛ ebia akyiri yi PT nhwehwɛmu no bɛtwam yiye anaa.

6. PWHT nhwehwɛmu bere a ɛho hia
Ebia nneɛma bi a wɔde gyina so anaa adwuma no ho nkyerɛkyerɛmu bɛhwehwɛ sɛ wɔde ɔhyew a wɔde yɛ adwuma wɔ weld akyi. Ɛsɛ sɛ wɔsan hwɛ PWHT mu ansa na wɔayɛ efisɛ ebetumi aka sɛnea ɛyɛ den, sɛnea wɔhwɛ ne kɛse so, ne nhyehyɛe a etwa to a wɔde hwehwɛ nneɛma mu.

7. Mfiri a wɔde yɛ adwuma a ɛyɛ den ne mfiri a wɔde yɛ adwuma a etwa to
Afei overlay welding, flange no machined to final bore, anim, RTJ groove, bolt tokuru, ne sealing nsusuwii. Eyi ne baabi a nneɛma a wɔyɛ a wɔmfa ahwɛyiye nyɛ no betumi ayi CRA nneɛma pii afi hɔ. Ɛsɛ sɛ wɔda so ara kura overlay thickness a ɛba fam koraa a wɔawie no mu wɔ saa fã yi akyi.

8. Nhwehwɛmu a etwa to ne nkrataa mu nhwehwɛmu
Wɔyɛ PT, PMI, hardness, ferrite, dimensional inspection, ne surface finish checks sɛnea adwuma no ahwehwɛde te. Ɛsɛ sɛ wɔde amanneɛbɔ ahorow no ne flange agyiraehyɛde, ɔhyew nɔma, ne nneɛma a wɔde ahyɛ mu no hyia ansa na wɔde amena.

Sɛ wopɛ mfiridwuma mu nkyerɛkyerɛmu a ɛtrɛw a ɛfa weld overlay nhyehyɛe no ho wɔ pipe, flange ne plate nneɛma so a, hwɛ yɛnweld overlay akwankyerɛ.

Wɔ weld overlay flanges ho no, ɛsɛ sɛ nhwehwɛmu di nneɛma abien ho adanse: base flange no di mfiridwuma ne dimensional ahwehwɛde ahorow ho dwuma, na CRA overlay no di corrosion-service ahwehwɛde ahorow ho dwuma. Sɛ ɔfã biara yɛ mmerɛw a, ebia flange no rentumi nnye project no ntom.

PMI bere a wɔde mfiri ayɛ akyiho hia titiriw. Sɛ wɔyɛ PMI ansa na wɔayɛ mfiri a etwa to nkutoo a, ebia ɛnyɛ nea egyina hɔ ma ɔfasu a ɛbɛkɔ akɔfa ɔkwan a wɔfa so yɛ adwuma no koraa. Wɔ sour anaa chloride-bearing service ho no, CRA soro a wɔde mfiri ayɛ a etwa to no ne beae a ɛho hia kɛse.

Wɔ nneɛma a wɔde kɔ amannɔne ho no, nkrataa a ɛne ne ho hyia no yɛ nea wɔde hwɛ sɛnea nneɛma te yiye no fã. Ɛsɛ sɛ ɔhyew nɔma, nnyinaso ade adansedi krataa, overlay alloy, PMI amanneɛbɔ, PT amanneɛbɔ, packing list, ne flange agyiraehyɛde no di nkitaho pefee. Eyi ma asiane a ɛwɔ hɔ sɛ wobenya nhwehwɛmu a wɔbɛkyɛ esiane kyerɛwtohɔ ahorow a ɛyera anaasɛ enhyia nti no so tew.

Wɔde weld overlay flanges di dwuma wɔ baabi a flange nipadua no hia nhyɛsoɔ ahoɔden a wɔahyɛ da ayɛ, nanso ɛsɛ sɛ nsuo{0}}nkitahodiɛ no ani gyina nsɛeɛ a ɛfiri sour gas, chloride-a ɛwɔ nsuo, ɛpo mu nsuo, acidic media anaa aggressive process fluids mu. Nea ɛnte sɛ obi a ɔte aseweld wɔ flange sowɔapaw titiriw ama paipu nkitahodi ne nhyɛso kuw, ɛsɛ sɛ weld overlay flange nso di CRA soro a ɛda adi wɔ medium no so.

• Sour gas a wɔyɛ ne nea wɔboaboa ano nhyehyɛe

Wɔ H2S-a ɛwɔ ɔsom mu no, flange nipadua no betumi ahwehwɛ carbon dade anaasɛ alloy dade ahoɔden a ɛba fam, bere a wetted surface hia CRA ahobammɔ. Alloy 625 overlay no taa hwɛ mu ma saa ɔsom adwuma yi. Ɛsɛ sɛ wɔhwɛ hardness control, HAZ tebea, ne NACE MR0175 / ISO 15156 ahwehwɛde ahorow ansa na wɔayɛ.

• Po mu nsu a wɔde guu mu na ɛmaa nsu nhama

Po mu nsu ne nsu a wɔyɛ no betumi ayɛ nea chloride, mframa a apete, anhwea, nsenia ne nneɛma afoforo a ɛma ɛyɛ hyew. Bore overlay, raised face overlay ne neck transition overlay boa ma asiane a ɛwɔ carbon dade a ɛda adi wɔ beae a nsu-di nkitaho no so tew.

• Po so ne po ase ntam nkitahodi

Mpɛn pii no, nnwuma a wɔyɛ wɔ mpoano no hwehwɛ sɛ wɔhwɛ mu yiye na wɔkyerɛw nkrataa. RTJ grooves, gasket anim, manifold nkitahodi, valve interfaces ne compact spool nkitahodi betumi ahia PMI, PT, hardness sɔhwɛ, ferrite sɔhwɛ, dimensional nhwehwɛmu ne third-party adansedi nsɛntitiriw.

• Refinery ne petrochemical nhyehyɛe nhama

Acid process media, chloride-nsuo a ɛwɔ mu, nsuo a ɛyɛ hyew a ɛkorɔn-ne mmeaeɛ a afrafra a ɛyɛ nsɛeɛ no betumi ahia CRA ahobanbɔ wɔ flange wetted surface no so. Weld overlay ma adwuma no kwan ma wɔde standard pressure-bearing flange nipadua di dwuma bere a ɛma corrosion resistance tu mpɔn wɔ baabi a medium no di nkitaho ankasa wɔ component no.

• Clad pipe, CRA-lined paipu ne manifold nkitahodi

Wɔtaa de weld overlay flanges di dwuma ne clad pipe, CRA-lined pipe, weld overlay pipe, valves, spools ne manifolds. Ɛsɛ sɛ beae a wɔde kata so no ne ade a ɛka bom no hyia sɛnea ɛbɛyɛ a ɔkwan a ɛko tia nsɛe-kwan no bɛkɔ so ayɛ nea ɛkɔ so.

Octal Dade a Wɔde Yɛ Nneɛmafoa saa nhyehyɛe yi so fi nneɛma a wɔsan hwɛ mu kosi nneɛma a wɔde mena a wɔayi no adi so. Yɛboa ma align base flange grade, overlay alloy, wie overlay thickness, anim type, RTJ groove ahwehwɛde, ne inspection scope ansa na production afi ase, enti delivered flange yɛ mmerɛw sɛ wobɛdi mu wɔ receiving inspection.

Yɛn mfasoɔ nyɛ supply range nko, na mmomadwuma no ho nhyehyɛe a wɔyɛ: forged flange sourcing, CRA overlay control, final machining, PMI / PT / hardness nhwehwɛmu, third-party nhwehwɛmu mmoa, ne export krataa ahosiesie betumi adi ho dwuma wɔ supply chain biako mu. Wei brɛ asiane a ɛwɔ nneɛma a ɛnhyia, nkatasoɔ a ɛnyɛ pefee, amanneɛbɔ a ɛyera, anaa nsɔano-anim asɛe ansa na wɔde amena no ase.

Wɔ nneɛma a wɔde kɔ amannɔne a wɔkra ho no, Octal Steel nso hwɛ yiye wɔ packing ahobammɔ a wɔde ma mfiri a wɔde ayɛ nneɛma, RTJ grooves, anim a wɔama so, bolt ntokuru, ne flange agyiraehyɛde ahorow so, na ɛboa flange no ma ɛba a ade no tebea ne nkrataa a wɔde ahyɛ mu no nyinaa ayɛ krado ama adwuma no mu nhwehwɛmu.

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FAQ

 

01.Dɛn na ɛsɛ sɛ wɔkyerɛ bere a wɔkra weld overlay flanges?

Ɛsɛ sɛ adetɔfo kyerɛ flange su, ne kɛse, nhyɛso kuw, anim su, nnyinaso ade, overlay alloy, overlay area, ne minimum finished overlay thickness wɔ machining akyi. Sɛ wopɛ ɔsom a ɛho hia a, ɛsɛ sɛ wɔkyerɛw PMI, PT, hardness, ferrite test, WPS/PQR, ne third-party inspection requirements nso wɔ adetɔ krataa no mu.

02.Mmeae bɛn na weld overlay flange hia CRA overlay?

Mmeae a wɔtaa kata so ne bore, anim a wɔama so, RTJ groove, kɔn mu nsakrae, blind flange inner face, ne nneɛma afoforo a ɛyɛ nsu a wɔakyerɛ wɔ mfonini no so. Ɛsɛ sɛ wɔhyɛ beae a wɔde kata so no agyirae pefee efisɛ carbon dade biara a ɛda adi wɔ ɔkwan a ɛsen no mu no betumi abɛyɛ asiane a ɛbɛma asɛe.

03.Dɛn nti na wɔde Inconel 625 di dwuma ma weld overlay flanges?

Wɔtaa paw Inconel 625 / Alloy 625 ma gas a ɛyɛ akisikuru, ɛpo mu nsuo a wɔde gu mu, nsuo a wɔayɛ, mpoano nsuo afiri, ne chloride-bearing service. Sɛnea ɛbɛyɛ a wobegye atom no, ɛsɛ sɛ wɔde PMI anaa nnuru nhwehwɛmu di nea etwa to a wɔde mfiri ayɛ a wɔde kata so no ho adanse, efisɛ dilution a efi dade a ɛwɔ ase no mu no betumi aka ɔfasu no so nnuru.

04.Dɛn ne nea wɔtaa yɛ awie overlay thickness ma weld overlay flanges?

Nnwuma pii kyerɛ CRA overlay thickness a ɛba fam koraa a wɔawie, mpɛn pii no atwa ho ahyia3.0 mm wɔ mfiri a etwa to akyi, nanso ɛsɛ sɛ bo pɔtee no di adwuma no mfonini anaa nkyerɛkyerɛmu no akyi. Adeɛ titire ne sɛ wobɛhwɛ sɛ overlay thickness a aka wɔ wetted surface a wɔawie no so, ɛnyɛ as-welded deposit no nko ara.

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