ASTM A335 P9 Alloy Steel Pipe

ASTM A335 Gr. P9 isimbi isina musono ferritic alloy simbi pombi yakagadzirirwakuenderera mberi sevhisi pane yakakwirira tembiricha uye kumanikidza. With about9% chromium uye 1% molybdenum, inogara mumhuri ye9Cr-1Mo iyo inoshandiswa zvakanyanya mukugadzira magetsi, petrochemical heaters, reformers, uye mitsara inopisa.

AtOctal Pipe, P9 mapaipi anopihwa mukatinormalized and tempered condition, yakaedzwa zvizere, uye inocherechedzwa pakudziya/kwebatch, inokodzera maboiler, mahedhiyo, mahedhiyo makuru, tambo dzechitsinga uye tembiricha yakakwira-pombi apo simbi isina kabhoni uye yakaderera{1}}Cr alloys haikwanise kuchengetedza oxidation kana kutsika.

Kusiyana neyakajairwa kabhoni simbi, P9 inogadzirwa kuchengetedza simba uye kuvimbika kwepamusoro mushurezviuru zvemaawapakupisa kwesimbi yakakwirira.

• Chromium (~9%)inoumba compact, inonamatiraCr₂O₃ firimupamusoro, kunonoka kuyera uye oxidation mumhepo inopisa kana-gasi rakasanganiswa.
• Molybdenum (~1%)inosimbisa iyo ferritic matrix uye inononoka creep deformation nekutadzisa dislocation kufamba.
• Mushurenormalizing + tempering, simbi inoratidza ayakadzikama ferrite-carbide chimiroine miganhu yezviyo yakagadzikana uye yakadzorwa carbides (kunyanya M₂₃C₆ / M₆C) ichitevedza miganhu - izvi ndizvo zvinoramba zvichikambaira -kutsemuka simba uye zvinodzivirira muganhu wezviyo embrittlement panguva yakareba.

Saka, musevhisi-yekushisa yepamusoro (superheater coils, reformer transfer lines), P9 inogara yakagadzikana kwenguva yakareba kudarika P5/P11-mhando alloys.

Kemikari Inoumbwa (yakajairika zera)

Mechanical Properties (ASTM A335 P9)

• Tensile simba:Yakakura kupfuura kana yakaenzana ne415 MPa
• Goho simba:Yakakura kupfuura kana yakaenzana ne205 MPa
• Elongation:Yakakura kupfuura kana kuenzana ne30%
• Kuoma:Zvisingasviki kana kuenzana ne163 HBW

Uwandu uhwu ndehwezvakajairwa-uye{1}}pamhepo yekutumira mamiriro uye anoitirwa kupa alloy inokwana muganho wekumanikidza uye tembiricha kugadzira.

Kuita chokwadi chekuti 9Cr-1Mo chemistry yanyatsochinja kuita inodiwa yepamusoro-microstructure yetembiricha, Octal Pipe inoshandisa nzira inodzorwa isina musono:

• Billet & kuboora

Clean Cr-Mo billets anodziiswa kusvika pakuboorwa kwakafanira (kusvika 1100–1150 degrees ), ozoboorwa/kurebeswa kuita makomba anoyerera zviyo zvakafanana.

• Kupisa kutenderedza / kutonhora kudhirowa

Ukobvu hwemadziro hunounzwa kune yakarongerwa hurongwa (SCH 10 - SCH 160). Yepakati normalizing inogona kushandiswa kana kuderedzwa kwakanyanya kana kushivirira kwepedyo kuchibatanidzwa.

• Kujaira (approx. 900–950 degree)

Inonatsa ferrite, inonyungudutsa-uniform carbides, inobvisa kushushikana kwemukati kubva pakuumbwa.

• Kupisa (approx. 675–760℃)

Inodzoreredza ductility uye kukiya mune inodiwa carbide kugovera kuitira kuti zvinokambaira kuputika zvivakwa zvienderane neASTM zvinodiwa.

• Kudzora kwehutano

1. Ultrasonic / eddy -yazvino NDT pamutumbi wepombi nemagumo
2. Hydrostatic test
3. Kuoma uye mechanical sampling pabatch
4. EN 10204 3.1/3.2 chitupa chekutevera

Mhedzisiro yacho ipombi ine carbides yakatsetseka, yakaenzana uye yakagadzikana yeferritic matrix - chimiro chaunoda kwenguva yakareba{1}}inopisa sevhisi.

Hurefu hwakakosha uye kushivirira kwakasimba kunogona kukurukurwa kune boiler / HRSG mapurojekiti.

Kana tembiricha yesimbi inokwira yakananga600-700 dhigirii, P9 inochengeta zvinhu zviviri izvo mamakisi akaderera anotanga kurasikirwa:

• Kutendeseka kwepamusoro- firimu reCr{{0}rich oxide rinononotsa kukura uye rinoderedza kupararira kweoxide, saka kusvibiswa kwechubhu uye kuonda madziro kunononoka.
• Creep kugadzikana- neMo mune mhinduro uye inodzorwa carbides, alloy inogona kusvika kune zvinokambaira kuputika simba pane inodiwa ye10⁴ h sevhisi kutenderedza 600 degree.

Ndosaka P9 inogara ichitsanangurwa ku:

• Zvigadzirwa zvemagetsi:superheater uye reheater machubhu, misoro yeutsi, inopisa mitsetse mikuru
• Refinery / petrochemical heaters:machubhu ekuvandudza, mitsara yekufambisa, kupisa-pombi dzegasi
• Yepamusoro-zvinomera zvinogadzira tembiricha:heat exchangers, manifolds, reactor feed mitsara
• Oiri & gasi thermal units:jekiseni rehutsi, hydrogen{0}}mitsetse yekugadziridza inoshanda pasi pekupisa uye kutenderera

Kuenzaniswa neP5/P11, P9 inopanani oxidation control uye inononoka microstructural coarsening, iyo inowanzoshandura kune nguva yakareba yekuongorora.

• Kugadzirwa kuASTM A335 / ASME SA-335uye zvinoenderana ISO/EN zvinodiwa
• Delivery innormalized and temperedmamiriro
• Mechanical, NDT, hydrostaticbvunzo mishumo yebatch yega yega
• 3.1 / 3.2 zvitupairipo
• Kurongedza kunokodzera kutengeswa kunze kwenyika uye{0}}kutakurwa kureba
• Chirongwa-level QA/QC rutsigiro rwemagetsi, kuchenesa nemakondirakiti echirimwa chemakemikari

FAQ

 

 

Q1: Chii chinonzi ASTM A335 P9 (ASME SA335 P9) pombi inoshandiswa?

A1:Seamless chrome-moly alloy pipe yepamusoro-tembiricha, yepamusoro-pressure service in power and petrochemical systems.

Q2: "9Cr-1Mo" inorevei kune P9 pombi?

A2:Zvinoreva dhizaini yealloy ine high chromium nemolybdenum yeoxidation resistance uye yakakwirira-simba rekupisa.

Q3: P9 yakasiyana sei neP22 kana P91?

A3:P9 igiredhi re9Cr-1Mo; P22 ndeye 2.25Cr-1Mo, nepo P91 iri yakagadziridzwa 9Cr-1Mo giredhi ine yakasimba metallurgical controls.

Q4: Ndeipi kupisa{1}}mamiriro ekurapa anowanzo kutsanangurwa paA335 P9 pombi isina musono?

A4:Kupisa kunodzorwa-mamiriro ekurapa (kazhinji akajairwa uye kudzikamiswa) ane marekodhi akanyorwa sezvinodiwa nehurongwa/spec.

Q5: Chii chandinofanira kukumbira kuti ndione P9 pombi mhando ndisati ndatenga?

A5:3.1 MTC ine kupisa traceability, chemistry/makanika mhedzisiro, uye inodiwa NDE/hydrotest maererano neprojekti yakatarwa.

Certifications

 

CE Certificate

ISO 9001 Chitupa

API Q1 Chitupa

ABS Chitupa

AP-5L Chitupa

API-5CT Chitupa