Lisebelisoa tsa Welding Duplex Butt Weld: Malebela a ho Qoba ho hloleha ho Tloaelehileng

Lisebelisoa tsa welding duplex butt weld li hloka boiphihlelo bo hlokolosi ba tekheniki le litekanyetso tse thata tsa tsamaiso tse khethollang lits'ebetso tse atlehileng ho tsoa lits'ebetsong tse nang le mathata. Lisebelisoa tsa lipeipi tsa tšepe tsa Duplex emela litharollo tse rarahaneng tse kopanyang matla le khanyetso ea kutu, leha ho le joalo ts'ebetso e ipapisitse le ts'ebetso e nepahetseng ea welding. Ho hloleha ho tloaelehileng ho bakoa ke taolo e sa lekaneng ea ho kenya mocheso, taolo e sa lokelang ea khase e sirelletsang, kapa tlhahlobo e sa lekaneng ea mocheso oa lipakeng. Ho utloisisa mekhoa ena ea ho hloleha le ho kenya ts'ebetsong mehato ea thibelo ho netefatsa hore lisebelisoa tsa lipeipi tsa tšepe tse duplex li fana ka ts'ebeletso e tšepahalang ka lilemo tse ngata ho pholletsa le maemo a boima a indasteri. Tataiso ena e shebana le liphephetso tsa bohlokoa tsa ho tjheseletsa tse amanang le lipeipi tsa tšepe tsa duplex mme e fana ka maano a sebetsang ao lihlopha tsa ho kenya li ka li sebelisang hanghang ho felisa litšenyehelo tse theko e boima le ho se atlehe pele ho nako.

Tokisetso ea Pele ho Welding le Litšoaneleho tsa Material

Bohloeki bo Bokaholimong le Thibelo ea Tšilafalo

Ho fumana boleng ba tjheseletsa ba tjheseletsa ka diphaepheng tsa dipeipi tsa duplex ho qala ka ho lokisa ka botlalo bokahodimo bo tlosang ditshila tse ka senyang botshepehi ba manonyeletso. Oli, mafura, pente le mongobo li ka ts'oaroa ka har'a letamo le qhibilihisitsoeng nakong ea ho chesetsoa ha lipeipi tsa tšepe tse peli, ho theha porosity le ho fokotsa matla a mochini. Ho hloekisa ka mechine ho sebelisa borashe ba terata ea tšepe e sa hloekang e etselitsoeng feela lipeipi tsa tšepe tse duplex ho netefatsa hore lisebelisoa tsa kantle li lula li le sieo libakeng tse kopaneng. Ho hloekisa ka acetone ho tlosa lifilimi tse sa bonahaleng tsa oxide le masalla a organic a fokolisang tšepe ea weld peipi ea duplex. Esita le tšilafalo e nyenyane haholo e ka qala mekhoa ea ho hlōleha tlas'a cyclic loading kapa ho pepeseha ho senyang. Lisebelisoa tsa lipeipi tsa tšepe tse hloekisitsoeng tse omisitsoeng li fihla ka ho feletseng pele li cheselletsa, li thibela ho kenngoa ha mongobo ho bakang ho phatloha ho bakoang ke haedrojene linthong tse matla haholo.

Tšebeliso e nepahetseng e Kopanetsoeng le Taolo ea Lekhalo

Tekanyo e nepahetseng ea geometri e theha motheo oa katleho lisebelisoa tsa peipi ea tšepe ea duplex liphetho tsa welding. Lekhalo la metso le lokela ho lula pakeng tsa limilimithara tse 1.5 ho isa ho tse 3.0, ho latela botenya ba lebota le litlhoko tsa ts'ebetso. Likheo tse feteletseng li qobella li-welders ho sebelisa nako e telele ea arc le ho kenya mocheso o phahameng, ho theha libaka tse anngoeng ke mocheso haholo tse kotsing ea ho ba le pula ea intermetallic ho lipeipi tse peli tsa tšepe. Likheo tse sa lekaneng li tšoara khase e sireletsang 'me li thibela ho kena ka ho feletseng ha metso, ho siea likheo tse ka hare tse jalang mapetsong. Liphaephe li tlameha ho khaoloa ka ho lekana ho sebelisa lisebelisoa tsa mochini ho fapana le mekhoa ea matsoho. Sireletsa lipeipi tsa tšepe tsa duplex ka li-clamp tse khethehileng, ho boloka boemo bo sa fetoheng nakong eohle ea tjheseletsa le ho thibela ho khopama ho behang jiometry kotsing.

Litšoaneleho tsa Welder le Tsamaiso ea Ts'ebetso

Ho hlahisa li-welds tse nang le molumo ka har'a lipeipi tsa tšepe tse duplex ho hloka maemo a phahameng haholo ho feta mefuta e meng e tloaelehileng ea tšepe ea carbon. Li-welders li tlameha ho bonts'a mangolo a thuto ka tlhahlobo e matla ea lipeipi tsa tšepe tsa duplex tlasa maemo a sebele a tlhahiso. Theha lintlha tse qaqileng tsa mekhoa ea ho tjheseletsa e khethehileng bakeng sa lipeipi tsa tšepe tsa duplex tse hlalosang litekanyetso tsa lisebelisoa, mekhahlelo ea ho kenya mocheso le liprothokholo tsa ho pholisa. Litekanyetso tsa ASME B31.3 le B31.1 li fana ka tataiso bakeng sa ho theha mekhoa e felletseng e sebetsang ho kenngoeng ha lipeipi tsa tšepe tse habeli. E hloka hore li-welders li boloke lirekoto tse qaqileng tsa ts'ebetso tse ngolang boleng ba ho kenya mocheso, mocheso oa interpass, le maemo a tikoloho bakeng sa kopano e 'ngoe le e 'ngoe ea lipeipi tsa tšepe tsa duplex, e leng se nolofalletsang lipatlisiso tse potlakileng haeba mathata a hlaha.

Taolo ea Mocheso le Taolo ea Microstructural

Ntlafatso ea ho Kena ha Mocheso le Thibelo ea Mocheso

Taolo e hlokolosi ea ho kenya mocheso nakong ea lipeipi tsa tšepe tsa duplex e thibela ho thehoa ha mekhahlelo ea intermetallic e senyang thepa. Boloka mocheso o pakeng tsa 0.5 le 2.5 kilojoules ka millimeter bakeng sa limaraka tse tloaelehileng tsa lipeipi tsa tšepe tse duplex. Mocheso o feteletseng o khothalletsa lipula tsa sigma le chi mokhahlelong oa likhato tse 700 ho isa ho tse 900 tsa Celsius. Thepa ea sejoale-joale ea tjheseletsa e thusa ho beha leihlo ka nako ea 'nete le ho lokisa amperage le voltage ho boloka mocheso o kenang ka har'a lifensetere tse moqotetsane. Fokotsa lebelo la ho tjheseletsa ka nepo ha o sebetsa ka diphaepe tsa tshepe tse duplex; ho tsamaea ka potlako ho fokotsa ho kenya mocheso ka mokhoa o feteletseng, ho baka mefokolo e sa fellang ea ho kena. Theha litsela tse mahareng tse fokotsang matla a futhumetseng a bokelletsoeng lipakeng tsa mekhahlelo e latellanang, ho thibela ho eketseha ha mocheso o feteletseng, ho sokela lipeipi tsa tšepe tse peli.

Interpass Mocheso Control le Cooling Protocols

Thempereichara eo ho eona ho kenngoa lipallo tse latelang e susumetsa haholo nts'etsopele ea microstructural le ts'ebetso ea lipeipi tse peli tsa tšepe. Lumella ho phola lipakeng tsa likhato tse ka tlase ho likhato tse 250 tsa Fahrenheit pele u qala ho tjheseletsa lipeipi tsa tšepe tse peli ho thibela ho bokellana ho feteletseng ha mocheso. Lekanya mocheso o kenang lipakeng o sebelisa likrayone tse lekantsoeng kapa li-thermometer tsa infrared tse etselitsoeng tlhahlobo ea lipeipi tsa tšepe tse peli, ho ngola boleng bakeng sa ho lateloa. Lipina tsa li-duplex tsa boemo bo holimo li bonts'a kutlo e eketsehang ea ho pepeseha ha mocheso, ho hloka taolo e matla bakeng sa super lisebelisoa tsa peipi ea tšepe ea duplex. Sefafatsi sa metsi kapa pholileng ea moea lipakeng tsa lipalangoang li thusa taolo ea mocheso ntle le ho kenya haedrojene ka har'a tšepe e chesehang ea lipeipi tsa duplex. Qala bocha lipallo tse latelang feela ka mor'a ho netefatsa hore mocheso o lula ka har'a mefuta e boletsoeng.

Tšebeliso ea Khase ea Tšehetso le Botšepehi ba Root Bead

Motso oa pasa o theha motheo oa lipeipi tsa tšepe tsa multipass duplex, 'me o hloka tlhokomelo e khethehileng ho sireletsa khase. Tšela khase e tšehetsang lehlakoreng la metso ea lipeipi tsa tšepe tse duplex ho thibela oksijene ea sepakapaka ho kena ka letamong la weld. Khase e sireletsang e nang le naetrojene e nang le hoo e ka bang karolo ea 2 lekholong ea naetrojene e thibela tahlehelo ea naetrojene nakong ea ho chesetsoa ha lipeipi tsa tšepe tse duplex ha li ntse li tsoela pele ho hanyetsa. Lifaha tsa metso ka har'a lipeipi tsa tšepe tse duplex li hloka tlhahlobo e hlokolosi pele li kenya li-pass tse latelang; sila ditlolo tse hodimo. Beha lifaha tsa metso ka mocheso o phahameng hanyane ho feta o khothaletsoang bakeng sa lipasa tse latelang ha u tjheseletsa lipeipi tsa tšepe tsa duplex, ho netefatsa hore ho kenoa ho lekaneng ho kopanyang ka botlalo ka botenya ba manonyeletso.

Melao-motheo ea Tiiso ea Boleng le Thibelo ea Mefokolo

Katleho ea ho Kena le ho Hloka Pheliso ea Fusion

Ho kenella ka mokhoa o sa fellang oa weld ho emela mokhoa oa tlokotsi oa ho hloleha ho kenngoeng ha lipeipi tsa tšepe tse duplex, e leng ho theha li-discontinuity tse ka hare tse lebisang khatello ea maikutlo. Fumana ho kenella ka botlalo ka botebo bohle bo kopaneng ka ho boloka boemo bo lekaneng le lebelo le nepahetseng la ho tsamaea ha o tjheseletsa lipeipi tsa tšepe tse duplex. Netefatsa ho kenella ha metso ka ho etsa tlhahlobo ea radiographic kapa ea ultrasonic ho lisampole tse emelang ho tsoa ho lipeipi tsa tšepe tsa duplex. Ho haella ha motsoako pakeng tsa li-weld layers ho bonts'a ho kenya mocheso o sa lekaneng kapa angle e sa nepahalang ea toche holim'a lipeipi tsa tšepe tse duplex. Theha mekhoa e tlamang ea ho hloekisa lipakeng tsa lipalangoang u sebelisa borashe ba terata e sa hloekang ho tlosa slag. Hana lipeipi life kapa life tsa tšepe tse duplex tse nang le litšepe tse bontšang bofokoli ba lifaha tse tlase; li-discontinuities tsena tsa ka hare li senya botšepehi ba sebopeho ho sa tsotellehe ponahalo ea ka ntle.

Taolo ea Porosity le Taolo ea Tšireletso ea Khase

Li-bubble tsa khase tse kenngoeng nakong ea ho tiisa li baka bofokoli ba porosity, ho fokotsa matla a mochini le ho qala mapetsong a mokhathala liphaepheng tsa tšepe tse duplex. Thibela porosity ka lisebelisoa tsa peipi ea tšepe ea duplex ka ho boloka litekanyetso tse tsitsitseng tsa ho sireletsa khase le ho netefatsa bohloeki ba khase pele o qala ts'ebetso. Hlahloba li-cylinders tsa khase bakeng sa tšenyo e lumellang mongobo ho kena; tšilafalo e hlahisa porosity e nang le hydrogen ka har'a lipeipi tsa tšepe tse duplex. Hloekisa malebela a ho hokahana le li-nozzle khafetsa ho etsa bonnete ba hore ho tsamaisoa ha khase e se nang tšitiso. Fokotsa lebelo la ho tsamaea 'me u boloke li-angles tsa torch tsa perpendicular mabapi le bokaholimo ba lipeipi tsa tšepe tse duplex, e leng ho lumellang nako e lekaneng ea hore lipulumo tsa khase li tsoe. Surface porosity e bonts'a mathata a tsamaiso a hlokang khato ea ho lokisa pele e tsoela pele.

Litlhoko tsa Tlhahlobo le Maemo a Litokomane

Theha liprothokholo tse felletseng tsa tlhahlobo tse sebetsang ho lipeipi tsa tšepe tsa duplex tse netefatsang boleng ba weld bo fihlela maemo a indasteri. Etsa tlhahlobo ea pono nakong ea lihora tsa ho qetela, ho ngola ponahalo ea lifaha le mefokolo e hlokomelehang. Etsa tlhahlobo ea matla a khoheli holim'a lipeipi tsa tšepe tse duplex ho bona li-discontinuity tse ka tlas'a lefatše, tse bohlokoa haholo bakeng sa ho tseba ho phatloha ho bakoang ke haedrojene. Etsa tlhahlobo ea khatello ea hydrostatic likopanong tse phethiloeng tsa lipeipi tsa tšepe tse peli ka likhatello tse fetang litlhoko tsa ts'ebeletso. Boloka lirekoto tse qaqileng tsa liphetho tsa liteko, boitsebahatso ba li-welder, le ts'ebetso ea ts'ebetso bakeng sa ts'ebetso e 'ngoe le e 'ngoe ea lipeipi tsa tšepe tsa duplex, e leng ho nolofalletsang lipatlisiso tse potlakileng haeba ho hlaha liphoso.

fihlela qeto e

Ho tseba hantle lipeipi tsa tšepe tsa duplex ho hloka kutloisiso e felletseng ea taolo ea mocheso le taeo e matla ea ts'ebetso, ho felisa mekhoa e tloaelehileng ea ho hloleha. Tokiso e nepahetseng ea bokaholimo, taolo ea ho kenya mocheso, le netefatso ea boleng li fetola lipeipi tsa tšepe tse duplex hore e be litharollo tse tšepahalang tse fanang ka ts'ebetso e ikhethang. Ho HEBEI RAYOUNG PIPELINE TECHNOLOGY CO., LTD., re fana ka liphaephe tsa tšepe tse duplex tsa boleng bo holimo tse entsoeng ho latela maemo a ASME, GOST-R, le ISO 9001:2015, ho netefatsa boleng bo tsitsitseng lits'ebetsong tsohle tsa bohlokoa.

LBH

1. Ke liphoso life tse atileng haholo tsa welding ho lipeipi tsa tšepe tsa duplex?

Porosity, ho kenella ho sa fellang, le ho haella ha motsoako li emela bofokoli ba mantlha ba lipeipi tsa tšepe tsa duplex, hangata ka lebaka la ho kenya mocheso o sa lekaneng kapa tšilafalo ea khase. Pula ea karolo ea Intermetallic e theola ho hanyetsa kutu le ho tiea, ho hlalosa lipeipi tsa tšepe tse duplex. Thibelo e hloka ts'ebetso e tiileng ea ts'ebetso e ntlafalitsoeng ka ho khetheha bakeng sa lisebelisoa tsa ho kenya lipeipi tsa tšepe tse duplex. Tlhahlobo e felletseng, ho kenyeletsoa tlhahlobo ea radiografia le tlhahlobo ea matla a khoheli, e bona liphoso pele lipeipi tsa tšepe tse duplex li kena ts'ebetsong, ho netefatsa ts'epo ea ts'ebetso.

2. Ke hobane'ng ha taolo ea ho kenya mocheso e le ea bohlokoa bakeng sa lisebelisoa tsa lipeipi tsa tšepe tse duplex?

Mocheso o feteletseng nakong ea lipeipi tsa tšepe tsa duplex o khothalletsa sebopeho sa sigma le chi, ho fokotsa ho tiea le ho hanyetsa kutu haholo. Kenyelletso ea mocheso e laoloang pakeng tsa 0.5 le 2.5 kilojoules ka millimeter e boloka microstructure e molemo ka har'a lipeipi tsa tšepe tse duplex. Mocheso o sa lekaneng o baka ho kenella ho sa fellang, ho senya matla a manonyeletso. Tlhokomelo ea sejoale-joale e thusa ho boloka mocheso oa lipeipi tsa tšepe tse duplex ka har'a litlhaloso tse moqotetsane, ho ntlafatsa boleng le ts'epahalo haholo.

3. Tsamaiso ea mocheso oa interpass e ama ts'epahalo ea lipeipi tsa tšepe tsa duplex joang?

Ho pholisa lipakeng tsa likhato tse ka tlase ho likhato tse 250 tsa Fahrenheit ho thibela ho bokellana ha mocheso, ho potlakisa sebopeho sa mekhahlelo ea li-intermetallic ho lipeipi tsa tšepe tse habeli. Lisebelisoa tsa duplex tsa boemo bo holimo li bonts'a kutlo e eketsehileng ea mocheso, li batla taolo e matla bakeng sa lisebelisoa tsa lipeipi tsa tšepe tsa super duplex. Pholiso e sa lekaneng e khothalletsa li-microstructures tse brittle ka lipeipi tsa tšepe tse duplex, ho qala ho phunyeha ho sa lebelloang. Tlhokomelo e tiileng ea mocheso e tiisa hore thepa ea microstructural e tsitsitse nakong eohle ea tšebeletso.

4. Ke mekhoa efe ea tlhahlobo e netefatsang boleng ba weld ea lipeipi tsa tšepe tsa duplex?

Tlhahlobo ea pono, tlhahlobo ea radiographic, tlhahlobo ea matla a khoheli, le tlhahlobo ea khatello ea hydrostatic e fana ka tlhahlobo e felletseng ea lipeipi tsa tšepe tse habeli. Radiography e lemoha porosity e ka hare e senyang lipeipi tsa tšepe tse duplex. Teko ea likaroloana tsa Magnetic e senola li-discontinuity tse ka tlas'a lefatše tse khethehileng ho lisebelisoa tse kentsoeng tsa lipeipi tsa tšepe tse duplex tse matla haholo. Teko ea Hydrostatic e tiisa hore likopano tse phethiloeng tsa lipeipi tsa tšepe tsa duplex li boloka botšepehi tlas'a maemo a feteletseng.

HEBEI RAYOUNG PIPELINE: Baetsi le Bafani ba Lipeipi tsa tšepe tse ka sehloohong tsa Duplex

Ho khetha mofani oa thepa ea ka tšeptjoang bakeng sa lipeipi tsa tšepe tsa duplex ho etsa qeto ka kotloloho hore na merero ea litšebeletso tsa motheo e finyella ts'ebetso e phahameng kapa e kopana le ho hlōleha ho bitsang chelete e ngata. HEBEI RAYOUNG PIPELINE TECHNOLOGY CO., LTD. e eme e le moetsi ea ka tšeptjoang oa lipeipi tsa tšepe tsa duplex, tse lulang li fana ka lihlahisoa tse entsoeng ho GOST-R, SGS, le ISO 9001: litekanyetso tsa 2015. Bohlale ba rona bo netefatsa hore karolo e 'ngoe le e 'ngoe ea lipeipi tsa tšepe tse duplex e kopana le litlhaloso tse thata tse batloang ke lisebelisoa tsa bohlokoa.

Rea hlokomela hore litšebeletso tsa motheo tse babatsehang li hloka thepa e ka tšeptjoang e kopantsoeng le bokhabane ba tlhahiso. Joalo ka baetsi ba lipeipi le li-fittings tse etellang pele, re fana ka litharollo tse felletseng tsa lipeipi tsa tšepe tsa duplex, ho kenyeletsoa litsoele tsa tšepe tsa buttweld, li-tee, li-reducers le li-flange, ho netefatsa hore ho na le libaka tse sireletsehileng tsa khokahano. Potefolio ea rona e fapaneng ea lipeipi tsa liphaephe tsa indasteri e sebetsana le litlhoko tsohle tsa moralo ho tloha meleng e otlolohileng ho isa likhutlong tse rarahaneng. Emong le emong ho kenya peipi ea tšepe ea duplex melemo ea kopano ho tsoa ho tlhahiso e tsoetseng pele, netefatso e tiileng, le ponaletso ea phepelo ea phepelo, e khethollang RAYOUNG ka tlholisano.

Ebang re laola litsamaiso tsa metsi, lithapo tsa khase, kapa lits'ebetso tsa bohlokoa, lipeipi tsa rona tsa tšepe tse duplex li fana ka ts'ebetso e sa thekeseleng le ho tšoarella ha nako e telele. Fumana hore na ke hobane'ng ha lifeme tse etellang pele tsa boenjiniere lefatšeng ka bophara li tšepa RAYOUNG bakeng sa ho kenya lipeipi tsa tšepe tsa duplex. Ikopanye le sehlopha sa rona sa tekheniki kajeno ho buisana ka litlhoko tsa hau le ho fumana hore na boitseanape ba rona bo fetola pono ea litšebeletso tsa motheo joang hore e be 'nete. Finyella ho info@hb-steel.com ho fumana tharollo ea lipeipi tsa tšepe tsa duplex bakeng sa lits'ebetso tsa hau.

References

1. Mokhatlo oa Amerika oa Baenjiniere ba Mechini. (2023). "ASME B31.3 Process Piping: Karolo e mabapi le Litlhokahalo tsa Welding ea Duplex Stainless Steel." ASME Standards Publications, New York, NY.

2. Mokhatlo oa Amerika oa Welding. (2022). "AWS D1.1/D1.1M: Structural Welding Code - Tšepe e nang le Likopo tsa ho Fittings Pipe ea Duplex Steel." Miami, FL.

3. Outokumpu Stainless Oy. (2023). "Mokhoa oa ho Weld Type 2205 Duplex Stainless Steel: Tataiso ea Tekheniki bakeng sa Lisebelisoa tsa Butt Weld." Espoo, Finland.

4. ASTM International. (2023). "Tlhaloso e Tloaelehileng ea ASTM A815/A815M bakeng sa Lisebelisoa tsa Lipeipi tsa Lipeipi tsa tšepe tse sa hloekang tsa Duplex le Likarolo Tse Amanang." West Conshohocken, PA.

5. Ward Vessel and Exchanger Corporation. (2022). "Ts'ebetso e Molemohali ea ho Welding Duplex Stainless Steels: Mekhoa ea ho Fokotsa ho Hlōleha ho Tloaelehileng." Technical Publication Series, United States.

6. Mokhatlo oa Machaba oa Boemo. (2023). "ISO 9001: Litsamaiso tsa Tsamaiso ea Boleng ba 2015: Litlhoko bakeng sa Baetsi ba Lisebelisoa tsa Duplex Steel Pipe Fittings le Mekhoa ea ho Welding." Geneva, Switzerland.