Chinese Professional 6 Stainless Steel Pipe - 904L yopanda chitsulo chitoliro - Huaxin

1. Kufotokozera Kwapafupi:

904L wapamwamba austenitic chitsulo chosapanga dzimbiri ndi otsika mpweya, faifi tambala, molybdenum austenitic zosapanga dzimbiri asidi kugonjetsedwa zitsulo.

GB giredi: 00Cr20Ni25Mo4.5Cu

Gulu Lapadziko Lonse: 904L

Mulingo wamba waku America: UNS:N08904

Gulu la EN: 1.4539

Kukula kwake: 10*2mm mpaka 219*15mm kapena makonda malinga ndi pempho la kasitomala

Utali Range: 300mm kuti 20000mm

2. Mapangidwe a Chemical:

3. Katundu Wamakina:

4.904L Kufotokozera:

1) Super austenitic chitsulo chosapanga dzimbiri 904L (00Cr20Ni25Mo4.5Cu; UNS: N08904; EN: 1.4539) ndi

mkulu aloyi austenitic zosapanga dzimbirizitsulo zokhala ndi carbon yochepa.

Ili ndi kukana bwino kwa dzimbiri mu dilute sulfuric acid ndipo idapangidwa mwapadera kuti ikhale ndi chilengedwe

okhala ndi dzimbiri kwambiri. Ili ndi chromium yambiri komanso nickel yokwanira. Kuwonjezera kwa mkuwa kumapangitsa kukhala nacho

kukana kwambiri kwa asidi, makamaka kukana kwa chloride interstitial dzimbiri ndi kupsinjika kwa dzimbiri. Sizophweka kuwonekera

zimbiri mawanga ndi ming'alu. Kukaniza kwake kwa dzimbiri ndikwabwinoko pang'ono kuposa zitsulo zina. Ili ndi processability wabwino komanso

weldability, ndipo angagwiritsidwe ntchito zotengera kuthamanga.

2) Metallographic kapangidwe ka 904L chitsulo chosapanga dzimbiri:

904L ndi mawonekedwe austenitic kwathunthu. Poyerekeza ndi chitsulo chosapanga dzimbiri cha austenitic chokhala ndi molybdenum wambiri,

904L imakhudza kwambiri ferrite ndipo α Kutentha kwa gawo sikovuta.

a. Zakuthupi ndi zamakina:

Kachulukidwe: 8.0g/cm3. Kukhazikika kwamphamvu: σ b≥520Mpa. Elongation: δ ≥35%

Chifukwa mpweya wa 904L ndiwotsika kwambiri (pazipita 0.020%), sipadzakhala mvula ya carbide pansi pazambiri.

kutentha mankhwala ndi kuwotcherera zinthu. Izi kumatha chiopsezo intergranular dzimbiri pambuyo ambiri kutentha mankhwala ndi kuwotcherera.

Chifukwa cha kuchuluka kwa chromium, nickel ndi molybdenum komanso kuwonjezera mkuwa, 904L imatha kupitsidwanso ngakhale pakuchepetsa.

zachilengedwe, monga sulfuric acid ndi formic acid.

Kuchuluka kwa nickel kumapangitsa kuti ikhale ndi chiwopsezo chochepa cha dzimbiri muzochitika zogwira ntchito. M'magulu a 0 ~ 98% a sulfuric acid,

kutentha ntchito 904L kungakhale mkulu monga 40 ℃. Kukana dzimbiri kwa koyera phosphoric acid mu ndende ya 0 ~ 85% ndi

zabwino kwambiri.

Mu mafakitale a phosphoric acid opangidwa ndi njira yonyowa, zonyansa zimakhudza kwambiri kukana kwa dzimbiri. Mwa mitundu yonse

ya asidi phosphoric, 904L ali bwino dzimbiri kukana kuposa wamba zosapanga dzimbiri zitsulo. Mu amphamvu oxidizing asidi nitric, kukana dzimbiri 904L

ndi otsika kuposa zitsulo alloyed mkulu popanda molybdenum. Mu hydrochloric acid, kugwiritsa ntchito 904L kumangokhala 1-2% ya otsika ndende.

Izi ndende osiyanasiyana. Kukana kwa dzimbiri kwa 904L kuli bwino kuposa chitsulo chosapanga dzimbiri wamba. Chitsulo cha 904L chimakhala ndi kukana kwakukulu

malo dzimbiri.

Mu njira ya chloride, kukana kwake kwa dzimbiri ndikwabwino kwambiri. Nickel wochuluka wa 904L amachepetsa kuwononga kwa dzimbiri m'maenje ndi m'ming'alu.

Pamene kutentha wamba austenitic zosapanga dzimbiri zitsulo ndi apamwamba kuposa 60 ℃, kungakhale tcheru kupsinjika dzimbiri mu chloride wolemera.

chilengedwe.

Kutengeka kumeneku kungathe kuchepetsedwa powonjezera nickel zomwe zili muzitsulo zosapanga dzimbiri. Chifukwa cha kuchuluka kwa nickel, 904L ili ndi kukana kwakukulu

stress corrosion cracking in chloride solution, concentrated hydroxide solution ndi hydrogen sulfide rich environment.

Zothandizira kuwotcherera: ndodo yowotcherera (E385-16/17), waya wowotcherera (ER385).

b. Njira zopewera kugwiritsa ntchito 904L:

1. Kukhazikika

1.1 Kuchita kwa kuwotcherera

Monga chitsulo chosapanga dzimbiri, 904L imatha kuwotcherera ndi njira zosiyanasiyana zowotcherera. Njira yowotcherera yodziwika kwambiri ndi kuwotcherera kwa arc kapena

kuwotcherera kwa inert gasi wotetezedwa.

Elekitirodi kapena waya zitsulo zachokera zikuchokera zitsulo m'munsi ndipo ali apamwamba chiyero. Zomwe zili molybdenum ziyenera kukhala

apamwamba kuposa zitsulo zoyambira.

Kutenthetsa nthawi zambiri sikufunikira musanayambe kuwotcherera, koma pozizira panja, kuti mupewe kukhazikika kwa nthunzi yamadzi, mfundo kapena moyandikana.

madera akhoza kutenthedwa mofanana.

Kutentha kwapafupi ndi 100 ℃ kupewa kaboni kudzikundikira ndi intergranular dzimbiri. Mphamvu zazing'ono zofananira, zopitilira

komanso kuwotcherera mwachangu kuyenera kutsatiridwa panthawi yowotcherera.

Nthawi zambiri, kutentha mankhwala sikufunika pambuyo kuwotcherera. Ngati chithandizo cha kutentha chikufunika, chiyenera kutenthedwa mpaka 11000 ~ 1150 ℃ ndiyeno utakhazikika mwamsanga.

1.2 Kuchita kwa Machining

Makhalidwe a makina a 904L ndi ofanana ndi azitsulo zina zosapanga dzimbiri za austenitic. Pali chizolowezi chomata chida ndikuwumitsa ntchito panthawi yokonza.

Zida za carbide zokhala ndi ma angle owoneka bwino ziyenera kugwiritsidwa ntchito, ndipo mafuta a sulfure ndi chlorine azigwiritsidwa ntchito ngati chodulira chozizirira. Zida ndi ndondomeko zidzakhala pa malo a

kuchepetsa kuuma kwa ntchito. Kuthamanga kwapang'onopang'ono ndi kuchuluka kwa chakudya ziyenera kupewedwa panthawi yodula.

5. Zopanga zogwirizana:

6. Chithandizo china

1) Chipolishi

2) Chizindikiro:

7 . Kupakira ndi Kuyika:

8. Ntchito:

904L imagwiritsidwa ntchito m'magawo otsatirawa:

* Zida zamafuta ndi petrochemical, monga ma reactors mu zida za petrochemical.

* Zida zosungira ndi zoyendera za sulfuric acid, monga chosinthira kutentha.

*Chida cha flue gas desulfurization cha chomera chamagetsi chimagwiritsidwa ntchito kwambiri m'thupi lamadzi, flue, shutter, internals, spraying system, etc.

* Scrubber ndi fan mu organic acid treatment system.

* Malo opangira madzi am'nyanja, chosinthira kutentha kwamadzi am'nyanja, zida zamafakitale zamapepala, sulfuric acid ndi zida za nitric acid, kupanga asidi,

makampani opanga mankhwala ndi zida zina zamankhwala, zotengera zokakamiza, zida za chakudya.

*Fakitale yamankhwala: centrifuge, reactor, etc.

*Chakudya chamasamba: mphika wa soya, vinyo wophikira, mphika wamchere, zida ndi zobvala.

*904L ndi chitsulo chofananira chochepetsera sulfuric acid wamphamvu zowononga sing'anga.