Weld Kɔn Flange a Ɛyɛ Fɛ

A weld kɔn mu flangewɔtaa paw bere a wɔhwɛ kwan sɛ nkitahodi no bɛsoa nea ɛsen nhyɛso ara kwa no. Wɔ nnwuma ankasa mu no, adetɔfo paw efisɛ...tapered hub + butt-wɔde kɔn a wɔde weld ayɛma adwennwen nsakrae a ɛyɛ mmerɛw fi flange so kɔ paipu so, a ɛboa wɔ nhyehyɛe ahorow a wɔde wɔn ho hyɛ mu no munhyɛso kyinhyia, ɔhyew a ɛsakrasakra, wosow, ɔfasu paipu a emu yɛ duru-, anaasɛ nhwehwɛmu ahwehwɛde a emu yɛ den.

Wɔ adetɔ ho no, eyi nyɛ flange style a wɔpaw ara kwa. Mpɛn pii no ɛyɛ gyinaesi a ɛfajoint ahotoso, bore alignment, weld mudi mu kura, ne bere tenten-bere som a ɛyɛ den. Weld kɔn flange a ɛne nea ɛteɛ no hyiagyinapɛn, anim, bore, nhyehyɛe, ne nsɛmbɛtaa de fit-up haw kakraa bi aba sen flange a wɔpaw denam ne kɛse ne adesuakuw a wɔfrɛ no nkutoo so.

Bere a adetɔfo hwehwɛweld kɔn flange nkyerɛkyerɛmuanaasɛweld kɔn flange gyinapɛn, mpɛn pii no ɛnyɛ sɛ wɔbɛhwɛ sɛ ebia ade no wɔ stock mu kɛkɛ. Nea ɛsɛ sɛ wosi so dua ankasa ne sɛ ebia flange no ne...project line class, pipe nhyehyeɛ, facing type, material grade, ne inspection scopewɔakyerɛkyerɛ mu dedaw wɔ mfonini anaa PO no mu. Wɔ adetɔ ankasa mu no, ɔhaw dodow no ara mfi "no supply" - efi nsɛm a wɔanto mu ntɛm, te sɛ bore a ɛnteɛ ma pipe fasu, anim a ɛnteɛ, anaa nkrataa ahwehwɛde a ɛyera a akyiri yi ɛma pene ne instɔlehyɛn brɛ ase.

Ɛsɛ sɛ adetɔ ho nkyerɛkyerɛmu a mfaso wɔ so kyerɛkyerɛ flange no mu fa saa mmeae a wɔhwɛ nneɛma so yi mu:

Wɔtaa kyerɛw RFQ line a ɛyɛ den saa:

ASME B16.5, weld kɔn flange, NPS 4, Class 600, RF, ASTM A105, bore kɔ Sch 80 paipu, MTR hia, Qty ___ .

Ɛno yɛ ahobammɔ kɛse sen sɛ wobɛkyerɛw "4 inch weld neck flange" kɛkɛ, efisɛ ɛhwɛ nsɛntitiriw a ɛtaa de akasakasa ba wɔ agyede mu no so:anim, bore match, nneɛma, .nekrataa no mu nsɛm a ɛkɔ akyiri.

A weld kɔn mu flangewɔtaa paw bere a wɔhwɛ kwan sɛ nhama no bedi ho dwuma nonhyɛso a ɛkɔ soro, ɔhyew a ɛkɔ soro, a wɔsan ka no biothermal cycling a wɔde tu kwan, wosow, anaaa emu yɛ duru-fasu paipubaabi a ahotoso a wɔde bom yɛ ho hia sen sɛnea ɛyɛ mmerɛw sɛ wɔbɛyɛ. Wɔ nnwuma ankasa mu no, wɔtaa de di dwuma wɔ petrol ne gas a wɔde fa nsuo mu, refinery ne petrochemical piping, offshore modules, boiler systems, pressure-vessel connections, steam service, ne process anaa utility nhama foforɔ a ɛho hia mu.

Wɔ saa nnwuma yi mu no, flange no nyɛ nkitahodi beae ara kwa. Ɛka:

• adesoa a wɔde kɔ baabi foforo
• weld mudi mu kura
• bere tenten-berensɔano a wɔde gyina pintinn

Sɛnea adetɔfo hwɛ no, bo a weld kɔn flange som no mu da hɔ kɛse bere a ɛka a wɔbɔ wɔ huammɔdi ho no yɛ kɛse no. Leak wɔ high-pressure branch, rework mpɛn pii a ɛnam alignment a enye so, anaasɛ extra weld correction bere a fit-up betumi ayɛ mmerɛw sɛ ɛbɛbɔ ka asen flange no ankasa.

Mfaso atitiriw a ɛwɔ so no fi...hub a ɛyɛ taperednebutt-welded kɔn mu, a ɛboa ma nsakrae ba flange ne paipu ntam yiye. Sɛ yɛbɛka no yiye a, eyi kyerɛ sɛ:

• ɛyɛbore a wɔde hyɛ mu
• ɔfã nsakrae a ɛnyɛ mpofirim kɛse wɔ weld beae no
• sɛnea ɛfata a ɛkɔ anim maɔsom a ɛyɛ kyinhyianevibration-ntrɛwmu a ɛyɛ nkate
• weld kwan a eye sen biara ma nhwehwɛmu
• nea wotumi de ho to so kɛseradiographic nhwehwɛmu a wɔyɛ
• a ɛyɛ den sen biarapipe-to-flange a ɛkɔ so

Ɛno nti na mfiridwumayɛfo taa pɛ weld kɔn flanges ma piping nhyehyɛe a ɛyɛ den kɛse wɔ baabi a bere tenten-som ahotoso ho hia sen ahoɔhare a ɛnyɛ den a wɔde besisi hɔ.

Ɛsɛ sɛ nneɛma a wɔpaw no di ɔsom tebea no akyi, na ɛnyɛ stock anaa ne bo nkutoo. Wɔ weld kɔn flanges ho no, ɛsɛ sɛ ade no ne pipe grade, design temperature, corrosion environment, ne project no inspection/document requirements hyia. Ebia flange bi ne dimensionally teɛ, nanso sɛ ade no ne line class no nhyia a, ɛda so ara yɛ ade a wɔapow.

Mpɛn pii no, .ASTM A105 na ɛwɔ hɔwɔde di dwuma ma standard carbon steel piping wɔ ɔsom tebea horow a ɛyɛ daa mu.ASTM A350 LF2 na ɛwɔ hɔno yɛ nea wɔpɛ ma low-ɔhyew som wɔ baabi a impact toughness ho hia. Sɛ wopɛ -temperature alloy piping a ɛkorɔn a, adetɔfo taa kyerɛF11, F22, anaa F91sɛnea ɛbɛyɛ a ɛbɛkɔ so ne paipu no mu nneɛma ne sɛnea ɛyɛ adwuma no ahyia. Wɔ ɔsom a ɛyɛ hu mu no, .F304 / F316yɛ nneɛma a wɔtaa paw a ɛnyɛ den, bere aduplex / duplex a ɛboro soabasobɔde ahorow no fata kɛse bere a ɛho hia sɛ ɛko tia chloride ne ahoɔden a ɛkorɔn nyinaa no. WɔOctal Pipe a Wɔde Yɛ Nneɛma, saa nneɛma a ɛne ne ho hyia yi yɛ mfitiaseɛ control points no mu baako wɔ flange quotation ne order review mu, ɛfiri sɛ nneɛma grade no nya pene, welding compatibility, ne final service ahotosoɔ so nkɛntɛnsoɔ tẽẽ.

Nhwɛsoɔ a ɛnyɛ den: ma steam line, flange selection nyɛ kɛseɛ ne class - nko ara na ɛsɛ sɛ adeɛ no nso kɔ so yɛ stable wɔ temperature, enti alloy grades te sɛF11anaasɛF22ebia ɛho behia sen sɛ wɔde carbon dade bedi dwuma. Sɛ wopɛ -ɔhyew line a ɛba fam a, faA105sɛ ankaLF2betumi de asiane aba sɛ ɛbɛyɛ den ɛwom mpo sɛ abien no nyinaa yɛ carbon dade a wɔayɛ no atoro de. Sɛ yɛhwɛ adetɔ gyinabea a, nneɛma a wɔde yɛ adwuma a ɛnteɛ no taa de ɔhaw akɛse ba sen flange a ɛnteɛ no, efisɛ ɛka pene a wɔpene so, welding a ɛne ne ho hyia, ne adwuma a etwa to a wogye tom.

Ne tiaatwa mu no, adetɔfo taa tu kɔ hɔweld kɔn flange vs slip-onpaw bere a nhyehyɛe no bɛyɛ nea ɛyɛ den kɛse na asiane a ɛwɔ hɔ sɛ ɛbɛtwetwe, abrɛ, anaasɛ wɔasiesie no mpɛn pii no bɛyɛ den sɛ wobebu wɔn ani agu so.

Noweld kɔn flange sɛnkyerɛnneho hia wɔ mfoniniyɛ, BOM, ne RFQ so efisɛ mfomso pii a ɛfa nsɛm a wɔafa aka ho fi ase wɔ flange nkyerɛwde a emu nna hɔ anaasɛ enni mũ so.

Wɔ adwuma no ho nkrataa mu no, nkyerɛwde ntiantiaa a wɔtaa de di dwuma ne:

• WN= Weld Kɔn
• WNRF na ɛyɛ= Weld Kɔn a Wɔama So Anim
• WNRTJ na ɔkyerɛwee= Weld Kɔn Ring Type Nkyekyɛm
• LWN= Weld kɔn tenten
• RWNanaasɛ wobetumi de nsɛmfua a ɛkyerɛkyerɛ mu adi dwuma de atew weld kɔn nhyehyɛe so a egyina mfoniniyɛ ho adesua so

Asɛm titiriw a ɛwɔ hɔ ma adetɔfo ne sɛ agyiraehyɛde no nkutoo nnɔɔso. "WN" kyerɛ flange type, nanso ɛnkyerɛkyerɛ muadesuakuw, anim, bore, ade, .anaasɛsusudua. Drawing note a ɛka sɛ "WN flange" nkutoo da so ara gyaw kwan pii ma quotation error. Ɛsɛ sɛ wɔkenkan agyiraehyɛde no ne ɔfrɛ a edi mũ no bom bere nyinaa.

Nhwɛso mfonini / BOM frɛ:
WN, 6", Adesuakuw 600, RF, ASTM A105, ASME B16.5, bore kosi Sch 80

Adetɔfo a wɔrehwehwɛ nneɛmaweld kɔn flange mu durumpɛn pii no wɔrebɔ mmɔden sɛ wobedi ɔhaw abiɛsa no mu biako ho dwuma:nneɛma a wɔde fa so ho akontaabu, nneɛma a wɔma so/wɔde nneɛma gu ho nhyehyɛe, .anaasɛmmoa-adesoa akontaabu. Ade a ɛho hia ne sɛ weld kɔn flange mu duru yɛɛnyɛ kɛse nkutoo na ɛhwɛ so. Ɛsakra kɛse wɔ:

• ne kɛse a wɔfrɛ no nominal size
• nhyɛso adesuakuw
• nneɛma a ɛyɛ den
• hub geometry a wɔde kyerɛw nsɛm
• anim type
• bore kɛse / nhyehyɛe a ɛne ne ho hyia

A Class 150 weld kɔn flangene aClass 1500 weld kɔn flangewɔ NPS koro no ara mu no ɛda adi sɛ ɛrenyɛ n’ade te sɛ ade koro no ara wɔ sɛnea wodi ho dwuma anaasɛ wɔde bɛmena no mu. Flange a ɛkorɔn-class no kura hub a emu yɛ duru, nipadua a ɛyɛ den, ne bolt circle geometry soronko, enti emu duru kɔ soro ntɛmntɛm ne class.
Ɛsɛ sɛ wosi weld kɔn flange mu duru so dua fi gyinapɛn pon anaa adeyɛ mfonini a ɛfata so, afei wɔsan hwɛ bio de toto nneɛma ankasa ne bore nhyehyɛe ho ansa na wɔawie nneɛma a wɔde fa anaasɛ mmoa ho gyinaesi ahorow.

Sɛnea ɛbɛyɛ a aweld kɔn mu flange, mpɛn pii no, wɔmfa abɔnten ntwemu na esi gyinae kɛse na sɛ ebia...hununokwarem no, ɛne paipu a wɔde weld bɛgu so no hyia. Asɛm a ɛwɔ weld kɔn nhyehyɛe mu nyinaa ne sɛ ɛbɛma nsakrae a ɛkɔ so yiye afi flange hub so akɔ pipe fasu so. Sɛ saa bore no sua, ne kɛse boro so, anaasɛ ɛne nhyehyɛe a ɛnteɛ no hyia kɛkɛ a, wɔpia welder no kɔ afuw mu nteɛso adwuma te sɛemu grinding, bore blending, hi-low nsakrae, anaa weld profile akatua. Ɛno nnyɛ brɛoo fit-up - nko na ebetumi nso aka weld consistency, radiographic gye a wogye tom, ne flow kwan a etwa to wɔ joint no so.

Eyi bɛyɛ nea ɛho hia kɛse wɔheavy-fasuo paipu, nnwuma a ɛnenhyehyɛe ahorow pii, nsakrae ahorow a wɔtew so, a ɛkorɔn-nhyɛso RTJ som, anaasɛweld kɔn flanges tentena wɔde abɔ anwenne anaa nnwinnade no mu nsuo mu. Wɔ saa nsɛm no mu no, bore a ɛne ne ho nhyia nyɛ adwumayɛbea ketewaa bi a ɛhaw adwene. Ebetumi ayɛ anammɔn bi a ɛwɔ mu wɔ weld no so, ama bere a wɔde teɛteɛ nneɛma a ɛne ne ho hyia no akɔ soro, na ahyɛ mfiri anaasɛ wɔde twitwiw nneɛma foforo a adetɔfo no anhyehyɛ da. Ɛno nti na ɛnsɛ sɛ RFQ a anibere wom gyaeNPS + Adesuakuw. Ɛsɛ sɛ ɛka nea wɔhwehwɛ nsobore to pipe nhyehyɛeanaasɛ fa botae no mamu ntwemu, enti flange no du hɔ a wasiesie ama paipu ankasa a ɛsɛ sɛ ɛne no hyia, na ɛnyɛ ne kɛse a wɔfrɛ no krataa so no nkutoo.

Sɛ wopɛ weld kɔn flange order a anibere wom a, adetɔfo taa dwen ho kɛsensɛntitiriw a wogye tom a wotumi susuwsen nsɛm a wɔka no nyinaa te sɛ "pɛpɛɛpɛ a ɛkorɔn" ho.

Mpɛn pii no, nea ɛka nhwehwɛmu a mfaso wɔ so a wɔde wɔn adwene si so no ho ne:

• flange gyinapɛn ne adesuakuw no si so dua
• anim type check ( .RF / RTJ / FF na ɛyɛ adwuma)
• bore ne hub nsusuwii ahorow
• bolt kurukuruwa ne bolt tokuru pɛpɛɛpɛ
• serration wie anaa RTJ groove nokwaredi
• agyiraehyɛde a wɔde si so dua
• ɔhyew dodow traceability to MTR
• PMI / UT / MT / PT baabi a ɛho hia

Weld kɔn flange a ɛte sɛ nea ɛyɛ fɛ wɔ aniwa so no da so ara betumi ama site no akyɛ sɛ...bore, facing, anaa nkrataamfa adwuma no ahwehwɛde nhyia.

Di nkitaho mprempren

FAQ

 

 

01.Ɔkwan bɛn so na ɛsɛ sɛ wɔkyerɛ weld kɔn flange wɔ RFQ anaa PO mu?

Fa ka hogyinapɛn, kɛse, adesuakuw, anim, nneɛma, bore to pipe nhyehyɛe, nhwehwɛmu/nkrataa, ne dodow. Eyi boa ma wɔkwati bore a ɛnteɛ, anim a ɛnteɛ, anaa nneɛma a ɛnhyia.

02.Bere bɛn na weld kɔn flange ye sen slip-on flange?

Mpɛn pii no, wɔpɛ manhyɛso a ɛkorɔn, ɔhyew a ɛkɔ soro, cyclic service, vibration, ne fasu paipu a emu yɛ duru-, baabi a ɛho hia sɛ wɔde stress transfer ne bore alignment a eye kyɛn so.

03.Dɛn nti na bore match ho hia ma weld kɔn flange?

Sɛ bore no ne pipe nhyehyɛe no nhyia a, fit-up betumi ahwehwɛgrinding, mismatch nteɛso, anaa weld nsakrae, a ɛma instɔlehyɛn brɛoo na ebetumi aka sɛnea wogye nhwehwɛmu no tom.

04.Ɔkwan bɛn so na ɛsɛ sɛ wɔpaw nneɛma ma weld kɔn flanges?

Ɛsɛ sɛ nsɛm no di akyiɔsom tebea mu. A105no abu so ma carbon dade a wɔde di dwuma daa, .LF2wɔ ɔhyew a ɛba fam ho no, .F11/F22/F91ama ɔhyew a ɛkɔ soro, naF304/F316 anaasɛ duplexma nneɛma a atwa yɛn ho ahyia a ɛporɔw.

05.What inspection points ho hia kɛse ansa na wɔde amena?

Adetɔfo taa hwɛadesuakuw, anim, bore, hub nsusuwii, agyiraehyɛde, ne ɔhyew a wotumi hwehwɛ, ne nea ɛka hoMTR, PMI, anaa NDEsɛ ɛho hia a.

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