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ASTM A312 TP304N Welded Stainless Steel Pipe: Kugona Kugadzira & Magadzirirwo Echigadzirwa Mufananidzo Wakaratidzwa
  • ASTM A312 TP304N Welded Stainless Steel Pipe: Kugona Kugadzira & Magadzirirwo Echigadzirwa

ASTM A312 TP304N Welded Stainless Steel Pipe: Kugona Kugadzira & Magadzirirwo Echigadzirwa

Tsananguro pfupi:

 

Womic Steel inopa pombi yesimbi isina tsvina yakasungirirwa yeASTM A312 TP304N, simbi isina tsvina yakasimbiswa ye304 ine nitrogen ine simba guru rekugadzira (275 MPa) kupfuura standard 304 uku ichiramba ichidzivirira ngura, ductility, uye weldability. Kuwedzera nitrogen kunovandudza simba uye kuramba makomba pasina kuvandudza kuita duplex stainless steel.

Yakagadzirwa neERW neEFW processes ine solution annealing uye pickled finish. Inowanikwa muOD 6.35mm–1219mm (1/4″–48″), ukobvu hwemadziro 0.5mm–50mm, uye hurefu hunosvika 24m. Inopihwa zvitupa zvemill, hydrostatic testing, UT inspection, uye ma end finishes akagadziriswa.

Mashandisirwo:
Midziyo yekumanikidza, kugadzira makemikari, mapuratifomu ari kunze kwegungwa, zvinochinja-chinja kupisa, masisitimu ehydraulic, kurapwa kwemvura, zvigayo zvemapepa, uye mapaipi eindasitiri ane simba guru.

Standard & Giredhi:
ASTM A312 TP304N / ASME SA312 / EN 10217-7 1.4315 (AISI 304N)


Zvimiro zveChigadzirwa

Ruzivo rweChigadzirwa

Matagi eChigadzirwa

1. Simbi yeWomic: Kugona Kugadzira & Simba reKambani

Womic Steel Group ikambani inogadzira zvinhu zvikuru uye inotumira kunze kwenyika pasi rose ine ruzivo rwemakore anopfuura makumi maviri mukugadzira zvigadzirwa zvesimbi isingatsvi. Nzvimbo yedu yekugadzira mapaipi eTP304N welded inoshandisa matekinoroji akasiyana-siyana epamusoro ekubatanidza zvinhu nekupisa kunodzorwa kuti ichengetedze nitrogen musimbi yeweld:

  • Mutsetse weERW (wekushongedza magetsi unodzivirira magetsi):Kune dhayamita kubva pa6.35mm kusvika 610mm (1/4″ – 24″), ukobvu hwemadziro kubva pa0.5mm kusvika 12.7mm. Kushongedza kwemhepo kwakakwirira nematanho akagadziridzwa kuchengetedza nitrogen. Yakanakira mapaipi madiki kusvika pakati nepakati eTP304N ekumanikidza uye mashandisirwo ekuvaka.
  • Mutsetse weEFW (Electric Fusion Welding):Kune dhayamita kubva pa219mm kusvika 1219mm (8″ – 48″), ukobvu hwemadziro kubva pa4.0mm kusvika 50mm. TIG (GTAW) root pass ine SAW fill pass, uchishandisa filler metal yakafanana (ER304N kana ER308 ine nitrogen).
  • Mutsetse weLSAW / SAWL weStainless:Kune dhayamita kubva pa406mm kusvika 1524mm (16″ – 60″), ukobvu hwemadziro hunosvika 50mm. Kubatanidza arc yakanyudzwa mumapuleti eTP304N akamonererwa.

Mapaipi ese eTP304N akasungirirwa anogadziriswa ne solution annealing (kupisa) pa 1040-1120°C zvichiteverwa nekudzima mvura kuti nitrogen irambe iri mu solution yakasimba uye kudzoreredza ngura, zvichiteverwa nekunyungudika uye kupfapfaidzwa.

Zvitupa zveHunhu & Kutevedzera Mutemo:

  • Chitupa cheISO 9001:2015
  • PED 2014/68/EU (CE Marking) yemidziyo yekumanikidza
  • EN 10204 3.2 Chitupa chine kusimbiswa kwebato rechitatu (TÜV, BV, SGS, LR)
  • Kuongorora kweVatatu (TPI) kwakatenderwa neSGS, BV, ABS, DNV, TÜV
  • Kodhi yeASME Boiler nePressure Vessel (Chikamu VIII, Chikamu 1) kana zvakumbirwa

Womic Steel inopa mapaipi eTP304N akasungirirwa kunyika dzinopfuura makumi mana muindasitiri yemidziyo inomanikidza, yezvivakwa, uye yemakemikari.

Kuchinjika Kwekugadzira:

  • ERW: 6.35–610mm OD × 0.5–12.7mm Uzito × ≤ 12m
  • EFW: 219–1219mm OD × 4.0–50mm WIT × ≤ 12m (yakareba kana yakumbirwa)
  • LSAW: 406–1524mm OD × 6.0–50mm Uzito × ≤ 18m
  • Sarudzo dzekupedzisa: Yakanamirwa uye yakasvinwa, yakanyoroveswa, yakakweshwa (180# kusvika 320#)

2. ASTM A312 TP304N: Kuumbwa kwechinhu uye hunhu hwekushanda

ASTM A312 TP304N imhando yesimbi isingatsvi yakasimbiswa nenitrogen yakajairika ye304. Nitrogen (0.10-0.16%) inosimbisa mhinduro yakasimba, ichiwedzera simba rekugadzira neanenge 35% uku ichichengetedza ductility yakanaka, kuomarara, uye kuramba ngura. Izvi zvinobvumira zvikamu zvakatetepa zvemadziro kuti zvive nechiyero chimwe chete chekumanikidzwa, zvichideredza huremu nemutengo.

Kuumbwa kweMakemikoro (Kuongororwa kweChirongo, % nehuremu):

Chinhu TP304N (ASTM A312) TP304 (yekuenzanisa)
C ≤ 0.08 ≤ 0.08
Mn ≤ 2.00 ≤ 2.00
P ≤ 0.045 ≤ 0.045
S ≤ 0.030 ≤ 0.030
Si ≤ 1.00 ≤ 1.00
Cr 18.0 – 20.0 18.0 – 20.0
Ni 8.0 – 11.0 8.0 – 11.0
N 0.10 – 0.16 ≤ 0.10
Fe Kuenzana Kuenzana

Zvimiro zveMichina (Kupisa Kwemukamuri, Mhinduro Yakanyungudutswa):

Pfuma TP304N TP304
Simba reGoho (min, 0.2% offset) 275 MPa (39,900 psi) 205 MPa (30,000 psi)
Simba reKusimba (miniti) 550 MPa (79,800 psi) 515 MPa (74,700 psi)
Kureba (min, 50mm geji) 35% 40%
Kuoma (kwakanyanya) 90 HRB 90 HRB

Zvimiro zvemuviri:

  • Kuwanda: 7.93 g/cm³
  • Modulus yeElasticity: 200 GPa (29 × 10⁶ psi)
  • Kufambisa kwekupisa: 16.2 W/m·K pa100°C
  • Kuwedzerwa kweThermal Coefficient: 17.2 × 10⁻⁶/°C (20-100°C)

Kuramba Kuora:

  • Zvakafanana ne304 munzvimbo zhinji (kuramba zvakanaka kune oxidizing acids, organic acids)
  • Kusakwanisa kunyura mumakomba kwavandudzika zvishoma nekuda kwenitrogen (PREN ≈ 19-20 vs 18 ye304)
  • Kudzivirira kwakanaka ngura yepakati pegranular mushure mekusonera (kana mvura yacho yaiswa zvakanaka)
  • Hazvina kukodzera kushandiswa kwechloride pamusoro pekupisa kwekunze (shandisa 316N kana duplex yechloride)

Mabhenefiti Akakosha Anopfuura 304:

  • Simba rekuwedzera regoho rinoita kuti madziro atetepe ne35% (kuderedza huremu ne20-25%)
  • Kushushikana kwakanyanya kunobvumirwa pachikamu cheASME VIII chemidziyo inodzvinyirira
  • Kugona kuchinjika uye kuumbwa kwakafanana
  • Kudzivirira makomba kuri nani zvishoma

3. Kutevedzera Dimensional Range & Standards

Chinhu Tsanangudzo
Zvakajairika ASTM A312 / ASME SA312 (zvakare A358, A249)
Maitiro Ekugadzira ERW, EFW, LSAW
Dhayamita Yekunze ERW: 6.35 - 610mm; EFW/LSAW: 219 - 1524mm
Ruvara rweMadziro ERW: 0.5 - 12.7mm; EFW/LSAW: 4.0 – 50mm
Range yeRonga 5S, 10S, 40S, 80S (yeNPS 1/8″ – 48″)
Hurefu hwehurefu Yakajairwa: 6m; Yakatambanudzwa: 12m, 18m, kusvika 24m
Kupedzisa Kupedzisa Mugumo Wakajeka (PE), Mugumo Wakatsemurwa (BE)
Kupedzisa Kwepamusoro Yakanamirwa & Yakabikwa, Yakanamirwa Yakajeka, Yakakweshwa
Kushivirira OD: ±0.5% kana ±3.2mm; Huremu: ±12.5% ​​(pa ASTM A999); Kureba: +50mm / -0mm

 

4. Zviyero & Magadzirirwo Anowanikwa - ASTM A312 TP304N Welded Stainless Steel Pipe

NPS OD (mm) Purogiramu Huremu (mm) Kurema (kg/m2) Kureba Kwakajairwa Kushandiswa Kwakajairika
1/2″ 21.3 10S 2.11 1.00 6m Mutsetse wehydraulic
3/4″ 26.7 10S 2.11 1.28 6m Kuyerwa kwemakemikari
1″ 33.4 10S 2.77 2.09 6m Mvura ine simba guru
1-1/2″ 48.3 10S 2.77 3.11 6m Mutsetse wekuita
2″ 60.3 10S 2.77 3.93 6m / 12m Ngarava yekumanikidza
3″ 88.9 10S 3.05 6.46 6m / 12m Koramu yechivako
4″ 114.3 10S 3.05 8.37 6m / 12m Chinochinja kupisa
6″ 168.3 10S 3.40 13.8 6m / 12m Chigayo chepepa
8″ 219.1 10S 3.76 20.0 12m Pamusoro pegungwa
10″ 273.0 10S 4.19 27.8 12m Rutsigiro rwechivakwa
12″ 323.9 10S 4.57 36.0 12m Musoro mukuru
16″ 406.4 10S 4.78 47.4 12m Goko remudziyo wekumanikidza
20″ 508.0 10S 5.54 68.6 12m Dhayamita hombe
24″ 609.6 10S 6.35 94.4 12m Tangi rekuchengetera zvinhu

Zviyero zvakagadzirwa kunze kwemhando idzi zviripo. TP304N inobvumira madziro akatetepa kupfuura 304 kuti akwanise kumanikidzwa zvakafanana.

5. Mitemo & Magiredhi eSimbi Isingasvibi Yakajairika Yakagadzirwa neWomic Steel

Zvakajairika Magiredhi eSimbi Kushandiswa Kwakajairika Maitiro ekushongedza
ASTM A312 TP304N, TP304, TP304L, TP316N, TP316 Basa rinoparadza, kumanikidzwa ERW/EFW/LSAW
ASTM A358 TP304N, TP304, TP316 Kubatanidzwa kwemagetsi kwakasungirirwa EFW
ASTM A249 TP304N Boiler, superheater, chinoshandiswa pakuchinja kupisa ERW/EFW
ASTM A312 TP304L, TP316L Basa rekugadzirisa ngura ERW/EFW/LSAW
EN 10217-7 1.4315 (304N) Zvinangwa zvekumanikidzwa SAW/ERW

Mashandisirwo:Midziyo yekumanikidza, zvikamu zvechivakwa, mapaipi ekunze kwegungwa, kugadzirisa makemikari, zvinochinja-chinja kupisa, michina yekugadzira mapepa.

6. Maitiro Ekugadzira - Pombi Yesimbi Isina Kugayiwa Yakasungirirwa (ERW, EFW, LSAW)

Maitiro eERW (Electric Resistance Welding) - Diki kusvika Pakati nepakati pedhayamita (6.35–610mm OD):

1. Kuongorora Zvinhu Zvisina Kugadzirwa (Strip/Coil):Chidzitiro cheTP304N chakasimbiswa kuti chakagadzirwa sei (Cr 18-20%, Ni 8-11%, N 0.10-0.16%). Coil yega yega ine nhamba yekupisa yakasiyana.

2. Kusunungura & Kuenzanisa

3. Kucheka Mipendero Yezvidimbu

4. Kugadzira:Kuumbwa kwemupumburu nguva dzose.

5. Kukwesha Kwemagetsi Kwakawanda:Kupisa kwakagadziriswa (≤ 1.5 kJ/mm) kuti nitrogen irambe iripo. Kumhanya kwakanyanya kungadiwa.

6. Kubatanidza Musono:Kupinza kweinduction kunoteverwa nekudzima mvura.

7. Kukura & Kururamisa

8. Kucheka kusvika pakureba

9. NDT:Kuongororwa kweEddy current (100%) + UT yekusarudza.

10.Kunyungudutsa kwemhinduro (Paipi Yakazara):1040-1120°C, chidzimiso chemvura. Zvakakosha pakunyungudutsa ma nitride uye kugadzirisa hunhu hwawo.

11.Kuedzwa kweHydrostatic

12.Kusvina & Kunzwa Kunyara

13.Kusimbiswa kwePMI (XRF) & Nitrogen (kana zvataurwa)

14.Kuongorora Kwekupedzisira & Kumaka

Maitiro eEFW (Electric Fusion Welding) - Dhayamita Yakakura (219–1219mm OD, 4.0–50mm WT):

1. Kugadzirira Ndiro:Ndiro yeTP304N, mipendero yakatambanudzwa (X bevel).

2. Kugadzira Roll

3. Kukwevera Tack

4. TIG (GTAW) Root Pass:Chinozadza chinoenderana (ER308 kana ER304N), gasi rinotsigira argon.

5. Mapasi eSAW Fill & Cap:Kuona kwemuchina wekupisa uchishandisa nzira yekupisa inodzorwa (≤ 1.8 kJ/mm), kupenya kwepakati (interpass) ≤ 150°C.

6. Welding yemukati

7. Kuongororwa kweX-ray kwe100%(pamwe chete neASTM A358)

8. Kugadziriswa kweMhinduro:Kurapa kwepombi yese nekupisa (1040-1120°C), chidzimiso chemvura.

9. Kusvina & Kunzwa Kunyara

10.Kuedzwa kweHydrostatic

11.Kuongorora & Kumaka kweDimensional

Maitiro eLSAW eStainless - Dhayamita Yakakura Zvikuru (406–1524mm OD, 6.0–50mm WIT):

  • UOE kana JCOE inoumbwa kubva paTP304N plate
  • Kushongedza SAW kwemativi maviri
  • Kugadziriswa kwemhinduro yakazara mushure mekushongedza

Zvinhu Zvakakosha Kufunga Nezve TP304N:

  • Kuwanda kwenitrogen kunofanirwa kudzorwa kudzivirira kunaya kwe nitride
  • Tembiricha yekupisa inonyungudutsa mvura (1080-1120°C) kuti inyungudise ma nitride
  • Kudzima mvura kunosungirwa kuchengetedza nitrogen mumhinduro yakasimba
  • Zvinoshandiswa pakuwedera zvinofanirwa kunge zvine nitrogen yakaenzana (ER308L pamwe neN yakawedzerwa)
b35784dc-660f-46c6-a1a9-dca3f174f62f

7. Maitiro Ekuongorora Hunhu uye Kudzora Mapaipi Esimbi Isina Kugayiwa eASTM A312 TP304N

Danho Nzira yekuongorora Chinangwa
Zvinhu Zvisina Kugadzirwa Kuongorora Makemikari (OES + Kupisa kweN) Simbisa TP304N (N 0.10-0.16%, Cr 18-20%, Ni 8-11%)
Zvinhu Zvisina Kugadzirwa Kuedzwa kweTensile Simbisa goho ≥ 275 MPa, kudhonza ≥ 550 MPa
Zvinhu Zvisina Kugadzirwa Kuoma ≤ 90 HRB
Zviri Mukati Kutarisa Kupinda Kwekupisa ≤ 1.8 kJ/mm
Kusundira (ERW) Eddy Current (100%) Kuvimbika kweWeld
Weld (EFW/LSAW) 100% UT (kana PAUT) Tarisa zvikanganiso zve weld
Weld (EFW/LSAW) RT (nzvimbo kana 100% pa spec) Hunhu hwekunamira
Welding Kudhaya Kunopinda Mukati (PT) Matsemuka epamusoro
Mushure meKugadziriswa kweMhinduro Kuedza Kuoma ≤ 90 HRB
Mushure meKugadziriswa kweMhinduro Kusimbiswa kweNitrogen (kana zvataurwa) Simbisa huwandu hweN mupombi yapera
Pombi Yapera Kuedzwa kweHydrostatic Kutendeseka kwekumanikidzwa
Pombi Yapera Kukotama / Kutungamirirwa Kukotama Kugona kuita zvinhu
Pombi Yapera PMI (XRF) Simbisa giredhi (Cr, Ni)
Pombi Yapera Kuonekwa & Kumaka Kutevedzana

Miedzo yeSarudzo:

  • Kuyedzwa kwekumanikidzwa kwekupisa kwakakwira (kana zvichidikanwa pakugadzira)
  • Kuedzwa kwekuora kwegomba (ASTM G48) kuti basa riitwe rakakosha
  • Kuedzwa kwe corrosion pakati pe granular (ASTM A262 Practice E)

8. Mashandisirwo Ekutanga - ASTM A312 TP304N Welded Stainless Steel Pipe

1. Midziyo yekumanikidza nematangi ekuchengetera zvinhu:Kushushikana kwakanyanya kunobvumirwa paASME Chikamu VIII kunobvumira madziro akatetepa (20-25% yehuremu) zvichienzaniswa ne304.

2. Zvikamu zvechivako munzvimbo dzinopisa:Zvitsigiro zvepadenga rekunze kwegungwa, magadzirirwo emiti yemakemikari, makoramu emiti yekugadzira chikafu. Simba guru rinoderedza saizi yechikamu.

3. Mapombi eparutivi rwegungwa:Kugadzira mapaipi uko kunodiwa kumanikidzwa kwakanyanya asi duplex isingadiwi. TP304N inopa simba repakati.

4. Kugadziriswa kwemakemikari (masisitimu ekumanikidzwa kwakanyanya):Mapombi ekupinda/kubuditsa reactor, mitsetse yekufambisa ine simba guru apo 304 haikwani asi 316L yakawedzerwa.

5. Magoko nemachubhu ekupisa zvinochinja-chinja:Kumanikidzwa kwemativi egoko kunogona kuwedzerwa pasina goko guru. Machubhu anogona kuva nemadziro akatetepa kuti kupisa kupfuure zviri nani.

6. Midziyo yekugadzira mapepa:Mitsetse yekupwanya mvura, mapaipi ekugadzirira chikafu uko simba rayo guru rinodzivirira kukurwa kwevhu nengura.

7. Nzvimbo yekubika doro uye mapaipi emukaka:Masisitimu eCIP (Clean-In-Place) ane simba guru uye mitsetse yezvigadzirwa zvinoshanda pamabhawa 10-15.

8. Mitsetse yehydraulic:Mitsetse yezvishandiso uye yekudzora inoda kumanikidzwa kwakanyanya kupfuura 304.

9. Pombi nemidziyo yevharuvhu:Zvikamu zvakagadzirwa kana zvakagadzirwa (zvinotsiva 304 nesimba rakawanda).

10.Masisitimu ekurapa mvura ine simba guru:Mitsetse yekudyisa ye reverse osmosis (kumanikidzwa kwakanyanya).

11.Zvivakwa zvekuvaka:Apo simba rakakwirira rinobvumira ma profiles akatetepa (handrails, supports).

9. Kurongedza & Kutumira - ASTM A312 TP304N Welded Stainless Steel Pipe

Kurongedza:

  • Dziviriro yekudzivirira ngura:Mapaipi akazorwa mafuta kana mapepa eVCI. Pakubika chikafu/kubika, hapana mafuta akasara (purasitiki yakaputirwa).
  • Zvivharo zvekupedzisira:Zvivharo zvepurasitiki zvemativi akachekwa.
  • Kubatanidza (Madhayamita madiki):Mapaketi ane tambo dzesimbi uye bepa rinobatana.
  • Kurongedza kwega kwega (Madhayamita makuru):Kuputira firimu repurasitiki.
  • Mabhokisi emapurangazvekushandisa zvakakosha.

Kutumira:

  • Matangi e ≤ 610mm, akapatsanurwa kuti akwanise dhayamita yakakura.
  • Magwaro:MTC 3.1/3.2, mushumo wekuyedza mvura, mishumo ye eddy current/UT, mushumo wePMI, mushumo wedimensional, runyorwa rwekurongedza, COO.

10. Mabhenefiti eSimbi yeWomic & Mibvunzo Inowanzo bvunzwa - ASTM A312 TP304N Welded Stainless Steel Pipe

Sei Uchifanira Kushanda Nesimbi yeWomic Steel paTP304N Welded Pipe?

  • Saizi Yakazara: ERW 1/4″ – 24″, EFW/LSAW 8″ – 60″.
  • Kunyungudutsa kwemvura mushure mekuwedera (1040-1120°C, kudzima mvura).
  • Kuchengetwa kwenitrogen kunosimbiswa kuburikidza nekuongorora kupisa.
  • Simba rakakwirira rinobvumira madziro akatetepa - kuderedza huremu hwe20-25% kupfuura 304.
  • Nguva dzekutungamira dzinokwikwidzana: mazuva 25-35 eERW, mazuva 35-50 eEFW/LSAW.
  • Global Certification: ISO 9001, PED (CE), EN 10204 Rudzi 3.2.

Mibvunzo Inowanzo bvunzwa (Mibvunzo Inowanzo bvunzwa) - ASTM A312 TP304N Welded Pipe

Mubvunzo: Ndeipi mukana weTP304N pane standard 304?
A: TP304N ine simba rekuwedzera goho ne35% (275 MPa vs 205 MPa) uku ichiramba iine simba rekudzivirira ngura, ductility, uye weldability yakafanana. Izvi zvinobvumira vagadziri kushandisa madziro akatetepa emidziyo yekumanikidza nemapombi, kuderedza huremu ne20-25% uye kuderedza mutengo wezvinhu kuti ive nechiyero chimwe chete chekumanikidzwa. Pamashandisirwo ekuvaka, saizi diki dzezvikamu dzinogona kushandiswa.

Mubvunzo: Ko TP304N inodhura kupfuura 304 here?
A: Zvishoma, nekuda kwekubatanidza nitrogen uye kudzora kwakasimba kwekuumbwa kwayo. Zvisinei, kuchengetedza huremu (20-25% madziro akatetepa) kunowanzo kukonzera kudzikira kwemutengo wezvinhu zvinoshandiswa zvine simba. Pamashandisirwo ekuvaka uko kusimba kwakakosha, kudzikiswa kwehuremu kunogona kuderedza mutengo weyuniti wakakwira.

Mubvunzo: Ko TP304N inogona kusungirirwa pasina kurasikirwa nenitrogen here?
A: Ehe, nematanho ekuwelda akakodzera (kupisa kushoma, ≤ 1.8 kJ/mm) uye simbi yakakodzera yekuzadza (ER308 kana ER304N). Nitrogen inochengetwa musimbi yeweld inowanzova 80-90% yesimbi yekutanga. Maitiro eWomic's ERW anoshandisa welding yakagadziriswa yepamusoro-soro inoderedza kurasikirwa nenitrogen. Pakushandisa kwakakosha, solution annealing mushure mekuwelda inodzoreredza kugoverwa kwenitrogen.

Mubvunzo: Ko TP304N inoda kugadziriswa kwemvura mushure mekunamira here?
A: ASTM A312 inoda kunyungudutsa kwemvura papombi dzakasungirirwa. Kune TP304N, kunyungudutsa kwemvura pa1040-1120°C kunoteverwa nekudzima mvura kunodiwa kuti kunyungudutse chero nitrides dzingave dzakaumbwa panguva yekunyungudutsa uye kudzoreredza kuramba kwengura uye hunhu hwemakanika. Womic inoita kunyungudutsa kwemvura papombi dzese dzakasungirirwa paTP304N.

Mubvunzo: TP304N yakakodzera here kushandiswa mumvura yegungwa?
A: Hazvikurudzirwi. TP304N ine simba rakafanana rekudzivirira makomba emvura ne304 (PREN ≈ 19-20). Kune mvura yegungwa kana nzvimbo dzine chloride yakawanda, shandisa 316N (ine Mo) kana simbi isina tsvina mbiri. TP304N ndeyekushandisa zvinoda simba rakawanda munzvimbo dzisina chloride kana nzvimbo dzine chloride shoma.

Mubvunzo: Ndeipi stress inobvumirwa yeTP304N muASME Section VIII?
A: Pakupisa kwemumba, kushushikana kunobvumirwa kweTP304N kunenge 137 MPa (20,000 psi) zvichienzaniswa ne115 MPa (16,700 psi) ye304 - inenge 19% yakakwira. Kukosha chaiko kunoenderana nekupisa; tarisa ASME Chikamu II, Chikamu D. Vagadziri vanofanirwa kushandisa kukosha kwakakodzera kwekushushikana kunobvumidzwa kwegiredhi rakatarwa.

Q: Ndeipi nguva yakajairika yekutumira pombi yesimbi isina ngura yeTP304N yakasungirirwa?
A: Mazuva 25-35 eERW (dhayamita diki kusvika pakati), mazuva 35-50 eEFW/LSAW (dhayamita hombe). TP304N igiredhi rakajairika rezvigayo zvakawanda, saka nguva dzekutungamira dzakafanana ne304.

Mubvunzo: TP304N inogona kushandiswa here pakupisa kwakanyanya (kupfuura 500°C)?
A: Simba reTP304N rinopisa zvakanyanya riri nani pane 304 nekuda kwekusimbaradzwa kwenitrogen solid solution. Zvisinei, kuti ishande kwenguva refu pamusoro pe550°C, magiredhi ane carbon yakakwira (304H) kana magiredhi asingapindi mvura (321H, 347H) ndiwo anonyanya kufarirwa. TP304N inonyanya kukodzera tembiricha dziri pakati nepakati (<425°C) panodiwa simba.

11. Chirevo cheProjekti - Offshore Platform Topside Piping & Structural Supports (Brazil)

Nyika:Brazil (Campos Basin, offshore Rio de Janeiro)
Standard & Giredhi:ASTM A312 TP304N (yakasungirirwa)
Zviyero & Huwandu:

  • OD 219.1mm (8″) × Purogiramu 10S (3.76mm WIT) – 1,200 metres (anenge matani 28) – Maitiro eEFW
  • OD 168.3mm (6″) × Purogiramu 10S (3.40mm WIT) – 1,800 metres (anenge matani 22) – Maitiro eERW
  • OD 114.3mm (4″) × Purogiramu 10S (3.05mm WIT) – 2,500 metres (anenge matani makumi maviri) – Maitiro eERW
  • OD 60.3mm (2″) × Purogiramu 10S (2.77mm WIT) – 3,000 metres (anenge matani gumi nemaviri) – Maitiro eERW
  • OD 406.4mm (16″) × Purogiramu 10S (4.78mm WIT) – 300 metres (anenge matani 12) – Maitiro eEFW (makoramu ekuvaka)

Huwandu:Mamita 8,800 (8.8 km), matani angangoita 94

Magadzirirwo:Mhinduro yeASTM A312 TP304N yakanyungudutswa uye yakakangwa, yakachekwa mativi. Kuyedzwa kwemvura. 100% UT yemapombi eEFW, eddy current yeERW. PMI papombi yega yega. Kuyedzwa kwesimba (kubereka ≥ 275 MPa, kwakawanikwa 310-340 MPa; kudhonza ≥ 550 MPa, kwakawanikwa 580-620 MPa). Charpy impact pa -20°C (min 27J, kwakawanikwa 100-150J). Intergranular corrosion test paASTM A262 Practice E (pass). Ongororo yechitatu neDNV Brazil.

Kushandiswa:Mapombi ekugadzirisa pamusoro penzvimbo uye zvinotsigira chimiro chepuratifomu yekugadzira kunze kwegungwa muCampos Basin. Zvibato zvemapombi ekugadzirisa zvakaburitsa mvura negasi rine simba shoma pa50-80°C ine chloride shoma (mvura yakagadzirwa). Zvinotsigira chimiro ndezvema skid emidziyo nema racks emapombi. Puratifomu iyi yaida kudzikiswa kwehuremu kuti iwedzere hupenyu hwayo hwekushanda (kuneta). TP304N yakasarudzwa nekuda kwesimba rayo re35% rekuwedzera goho, zvichibvumira madziro akatetepa (Schedule 10S pachinzvimbo cheSchedule 40S) kune ese ari maviri mapaipi uye nhengo dzechimiro.

Mamiriro Einjiniya:Puratifomu iyi yakatanga kugadzirwa kuti ishandiswe pakuisa mapaipi e304. Nekuvandudza kuenda kuTP304N nekuderedza ukobvu hwemadziro kubva paSchedule 40S (4.55-8.18mm) kuenda kuSchedule 10S (2.77-4.78mm), timu yeinjiniya yakawana kudzikiswa kwehuremu ne45% pamapaipi uye kudzikiswa kwehuremu ne30% pamatsigiro echivakwa - kuchengetedza huremu hwese hwematani makumi matatu nemashanu (27% yehuremu hwepakutanga). Izvi zvakabvumira kuti puratifomu irambe iri mukati mebhajeti rayo rehuremu repamusoro.

Matambudziko ehunyanzvi nemhinduro:

  • Kuderedza huremu pasina kukanganisa kumanikidzwa– Simba guru reTP304N rakabvumira madziro akatetepa paASME B31.3. Pamapaipi e8″, Schedule 10S (3.76mm) yakatsiva Schedule 40S (8.18mm), zvichideredza huremu ne54%. Womic yakapa dhigirii retifiketi uye mishumo yekuyedza kumanikidzwa. Kuyedza kweHydrostatic pa3.0 MPa kwapasa (dhizaini yekumanikidza 1.8 MPa, bvunzo yekumanikidza 2.7 MPa).
  • Kuenzanisa simba resimbi yesimbi ye weld– Simbi yeERW neEFW weld inofanira kunge yakasimba zvakaenzana nesimbi yebase. Maparameter eERW akagadziriswa eWomic kuti awane kushanda zvakanaka kwejoini yeweld ye95% (simba rekudhonza 560 MPa vs base 590 MPa). Majoini eEFW achishandisa ER308 filler akawana kushanda zvakanaka kwejoini ye100%. Miedzo yese yekudhonza weld yakapasa.
  • Kuramba ngura pamadziro akaderedzwa ukobvu– Madziro matete haana ngura yakawanda. Mvura inogadzirwa ine chloride shoma (< 50 ppm) ine pH 6.5-7.5, saka mwero wekuora wakaderera. TP304N ine resistance iri nani pane 304 nekuda kwenitrogen. Womic yakaita ASTM G48 pitting test (24h pa22°C) – hapana pitting. Mutengi anogamuchirwa.
  • Dhizaini yekutsigira chivakwa uchishandisa TP304N– Makoramu e16″ akashandisa Schedule 10S (4.78mm) pachinzvimbo cheSchedule 40S (9.53mm). Finite element analysis (FEA) yakasimbisa kuti rusvingo rwakatetepa rune simba guru reTP304N rwakapa mutoro wakaenzana. Womic yakapa kushivirira kwakatwasuka ≤ 0.15% kuti koramu igadzikane.
  • Maitiro ekushongedza munda weTP304N– Chikwata chekugadzirisa puratifomu chaifanira kugadzirisa mapaipi panguva yekuisa. Womic yakapa WPS ichishandisa GTAW ine ER308 filler, heat input ≤ 1.8 kJ/mm, interpass ≤ 150°C. Makuponi makumi maviri eweld akapfuura RT, PT, uye tensile testing.
  • Kutakura zvinhu kuenda kuCampos Basin– Mapaipi akatumirwa kubva kuShanghai kuenda kuRio de Janeiro, ndokuzoendeswa kupuratifomu iri kunze kwenyika kuburikidza nengarava yekugovera. DNV yakaongorora mapaipi paaitakurwa. Matani ese makumi mapfumbamwe nemana akatumirwa muzvikamu zviviri mukati memavhiki mashanu.

Mhedzisiro:Mapombi epamusoro pepuratifomu uye zvinotsigira zvivakwa zvakaiswa mukota yechipiri ya2024. Kuremerwa kwehuremu hwematani makumi matatu nemashanu kwakaita kuti puratifomu isvike pakurema kwayo kwepamusoro pasina kuda kusimbiswa kwechivako. Mushure memwedzi gumi nemiviri yekushanda, ongororo yakaratidza kuti hapana kukuvara kana kutadza kweweld. Mushandi anoronga kushandisa TP304N pakuvandudza puratifomu mune ramangwana kuderedza huremu uye kuwedzera hupenyu hwezvinhu. Womic Steel ikozvino mutengesi akakodzera wezvinodiwa nemushandi uyu zvemapaipi esimbi isina ngura.

Bata nesu:
Webhusaiti: www.womicsteel.com
E-mail: sales@womicsteel.com

Nhare / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568

Womic Steel – Mubatsiri wako wakavimbika weASTM A312 TP304N mapaipi esimbi isina ngura akasungirirwa emidziyo inomanikidzwa, mapuratifomu ekunze, mashandisirwo ekuvaka, uye masisitimu emakemikari ane simba guru pasi rese.

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