ASTM A335 P22 Ibisobanuro byerekana imiyoboro (Chrome Moly Umuyoboro) - BLOG

Amavu n'amavuko

Muri Cr - Mo alloy ibyuma,ASTM A335 Icyiciro P22ihagarariye kimwe mubisubizo byinshi kurihejuru - umuvuduko nuburebure - imiyoboro yubushyuhe.
IhuzaChromium 2.25%na1% molybdenum, gukora matrix ivanze ishoboye kurwanya ibimera, okiside, na karburizasi mugihe kinini kimara ubushyuhe bugera kuriImpamyabumenyi 620 (dogere 1150 F).

Ibikoresho bimaze igihe kininiakazi ko gukora amashanyarazi, gutunganya, hamwe na sisitemu yo kuvoma peteroli, gukemura icyuho cyimikorere hagati yamanota yo hasi nka P11 hamwe na ferritic yateye imbere - martensitike alloys nka P91.
Iringaniza ryubukanishi bwokwizerwa, guhimbwa, hamwe nigihe kirekire - ituze rihamye bituma iba nziza kuriimitwe ya parike, reheater tubes, hamwe nimirongo yo hejuru -.

Igishushanyo mbonera hamwe na Metallurgical Shingiro

Icyiciro cya P22 ni iicyiciro cya ferriticy'ibyuma. Imikorere yacyo ikomoka kuri microstructure yakozwe nezaubushyuhe bwa ferrite na chromium ihamye - molybdenum karbide (M₂₃C₆, M₆C).

Alloy Element	Ibirimo (%)	Uruhare mu mikorere
Cr (Chromium)	1.90 – 2.60	Ikora urwego rukingira oxyde kandi ikanonosora ibipimo
Mo (Molybdenum)	0.87 – 1.13	Itanga igisubizo - igisubizo gikomeza kandi kirwanya kunyerera
C (Carbone)	0.05 – 0.15	Igenzura ubukana no kuringaniza
Mn (Manganese)	0.30 – 0.60	Itezimbere gusudira no gukomera
Si (Silicon)	0.50 – 1.00	Yongera okiside hamwe no kurwanya ruswa
P / S	Ntabwo ari munsi cyangwa bingana na 0.025	Ikomeza guhindagurika kandi ikarinda imipaka ingano

Iboneza ryibyuma byemeza:

Ferrite ihamye - karbide microstructureirwanya gukomera munsi yumutwaro wubushyuhe.
Kurema - guturika gushikamyeamasaha arenga 100.000 kumurimo kuri dogere 540–600.
Ubudakemwa buhebujeiyo post - gusudira ubushyuhe - bivurwa (PWHT).
Kugenzura ibipimo bya okiside, kugabanya imiyoboro yubusa hamwe no guta ibyuma.

Ubusugire bwa Mikoranike no Kurwanya Ubushyuhe

Umutungo	Ibisabwa	Intego yubuhanga
Imbaraga	Biruta cyangwa bingana na 415 MPa (60 ksi)	Ihangane birebire - ijambo axial stress
Gutanga Imbaraga	Kurenza cyangwa bingana na 205 MPa (30 ksi)	Irinda guhindagurika kwa plastiki
Kurambura	Kurenza cyangwa bingana na 30%	Itanga impimbano
Gukomera	Ntabwo ari munsi cyangwa bingana na 163 HBW	Iremeza gukomera no kurwanya umunaniro

Ubushyuhe bwo hejuru, P22 ikomeza acreep - imbaraga zo guturika hejuru ya MPa 60 kuri dogere 600, kugumana imiterere nubunyangamugayo no munsi yumuvuduko wikizunguruka no kunyeganyega.

Gukora Ikoranabuhanga no Kuvura Ubushyuhe

Bitandukanye nicyuma cyo hasi cya karubone, P22 isaba nezakugenzura ubushyuhemu nganda zose.
Umuyoboro wa Octal ukoresha tekinoroji yo gushiraho idafite ubuhanga hamwebyinshi - kuvura ubushyuhekwemeza uburinganire bwa metallurgical hamwe nuburinganire bwuzuye.

Inzira yo gukora:

Gutobora bilet & Gushushanya- Cr - Mo bilet yatobowe kuri dogere 1100–1150 ukoresheje kuzunguruka.
Igishushanyo gikonje / Kuzunguruka- Itunganya ingano nubunini bwurukuta.
Ubusanzwe (dogere 940–980)- Gutunganya ibinyampeke bya ferritic kandi bigashonga karbide zitandukanye.
Ubushyuhe (dogere 675–760)- Kugabanya imihangayiko y'imbere, kugarura ihindagurika, no guhagarika karbide.
Ikizamini cya Hydrostatike / Ultrasonic- Yemeza ubushobozi bwumuvuduko nuburyo bwiza.

Uwitekakabiri - kuvura ubushyuhe(usanzwe + umujinya) ni ngombwa. Itanga ihazabu - ingano, yuzuye ferrite matrix irwanya kwinjirira, ikomeza guhindagurika, kandi itanga imikorere iteganijwe mu myaka myinshi ishize.

Ingano

Parameter	Urwego
Diameter yo hanze	½ ″ - 24 ″ (12.7 - 610 mm)
Uburebure bw'urukuta	1,2 - 100 mm
Uburebure	Kugera kuri m 12 (SRL / DRL / gakondo)
Kugororoka	Ntibiri cyangwa bingana na 0.8 mm / m
Ubwoko bwanyuma	Beveled / Ikibaya / Urudodo

Ibihimbano byihariye nkaU - yunamye, ibisebe, hamwe n'umutwezirahari bisabwe ingufu zumuriro na sisitemu yo gutunganya.

Imikorere munsi yubushyuhe bwo hejuru

Mugihe cyakazi kiri hejuru ya dogere 550, P22 ikora aUbucucike bwa Cr₂O₃yizirika ku cyuma fatizo, ikarinda guta no gutakaza ibyuma.
Iyi firime ikora nka awenyine - inzitizi yo gukiza, kubungabunga ubushyuhe bwogukoresha neza hamwe nubuso bwubuso mugihe kirekire.

Ibikorwa by'ingenzi biranga:

Imbaraga Zikomeye:Ihamye munsi yumutwaro uhoraho hamwe nigitutu cyamagare.
Kurwanya Umunaniro Ukabije:Matrisa nziza - ingano irinda gucika munsi yizunguruka.
Ingero zingana:Kwiyongera k'ubushyuhe buke byerekana guhuza gusudira.
Imikorere ya Weld:PWHT igarura ihindagurika kandi ikuraho imihangayiko isigaye.
Kurwanya Oxidation:Kurinda kwizewe kugera kuri dogere 620, kwagura intera yo kugenzura.

Gushyira mu bikorwa inganda

ASTM A335 P22 imiyoboro ikoreshwa cyanekubyara ingufu, peteroli, nagutunganyaimirenge, cyane cyane murisuperheater, reheater, hamwe na - umuvuduko w'amazi y'ibiryo.

Gusaba abahagarariye:

Guteka & Reheater Tubingkubice bisobanutse kandi birenze urugero.
Gutunganya Imitwenaubukungumu mashanyarazi.
Uruganda rutunganya amavuta na peteroliaho carburizing na okiside imyuka ibana.
Gushyushya ibicuruzwanaivugurura ryinshibisaba uburebure - ijambo metallurgical stabilite.

Ibikorwa byayo mubikorwa remezo byingufu byemeza ko bikwiyeimikorere ikomeza nigihe gito cyo hasi, gukora P22 ibikoresho byingenzi murwego rwo hejuru - ibihingwa bikora neza.

Kwipimisha & Ubwishingizi Bwiza

Ibicuruzwa byose bihuyeASTM A335 / A999naASME SA335ibipimo, byagenzuwe binyuze:

Kwipimisha Hydrostatike cyangwa ultrasonic
Kwipimisha no gutwika ibizamini
Kwemeza umutungo wa mashini (tensile, hardness)
Igenzura rinini kandi rigaragara
Ingaruka zidasanzwe hamwe no gupima radiografiya

Buri cyiciro gitangwa hamweEN 10204 3.1 / 3.2 Icyemezo, ibisobanuro byuzuye, hamwe nisuzuma ryibizamini.

Ubwubatsi Bwizewe hamwe na Octal Umuyoboro

Umuyoboro wa Octal utanga imiyoboro ya ASTM A335 P22 muriibintu bisanzwe kandi bituje, kwemeza guhanura hejuru - imikorere yubushyuhe no guhuza weld.
Hamwe na {inganda, inganda, ninganda zitunganya isi yose.

Menyesha nonaha

Ibibazo

Q1: Umuyoboro wa ASTM A335 P22 (ASME SA335 P22) ni iki?

A1:Ubushyuhe bwo hejuru -, hejuru - imiyoboro ya serivisi itanga ingufu mu mashanyarazi, mu nganda, no muri peteroli.

Q2: Nubuhe buryo busanzwe bwo kuvanga imiyoboro ya P22?

A2:2.25Cr - 1Mo (chrome-moly) ferritic alloy ibyuma bigenewe kunyerera no kurwanya okiside.

Q3: Ni ubuhe buryo bwo kuvura ubushyuhe bukenewe mu miyoboro ya P22?

A3:Ubusanzwe hamwe nubushyuhe (N + T) hamwe nubushyuhe bwanditse - inyandiko zivura.

Q4: Ni ryari nahitamo P22 aho guhitamo P11 cyangwa P91?

A4:Hitamo P22 nkurwego ruringaniye - urwego rwubushyuhe bwo hejuru / ibisabwa hejuru ya P11, ariko udafite ikiguzi kinini / kugenzura akenshi bifitanye isano na P91.

Q5: Niki nasaba kugenzura ubuziranenge bwa P22 mbere yo kugura?

A5:EN 10204 3.1 / 3.2 MTC hamwe nubushyuhe bwo gukurikiranwa, ibisubizo bya mashini / chimie, gukomera, hamwe na hydrostatike cyangwa UT nkuko byagaragajwe.