Maemo a ho phethahala ha tšepe ea tšepe ea nodular ntle le riser

1 Litšobotsi tsa ho tiisa tšepe ea ductile
Mekhoa e fapaneng ea ho tiisa tšepe ea tšepe e entsoeng ka tšepe le ea tšepe e bakiloe ke mekhoa e fapaneng ea kholo ea graphite ea nodular le flake graphite.

Ka tšepe e putsoa ea hypoeutectic, graphite e qala ho oela moeling oa austenite ea mantlha. Mahlakore a mabeli a lakane ea graphite a pota-potiloe ke austenite mme a monya graphite ho tloha austenite ho tiisa. Ntlha ea lakane ea graphite e ka mokelikeli. E hola ka ho monya graphite.

Ka tšepe ea nodular cast, hobane graphite e chitja, libolo tsa graphite li qala ho monya graphite ho potoloha kamora pula. Mokelikeli o potolohileng o fetoha austenite e tiileng mme e teetse libolo tsa graphite ka lebaka la ho fokotseha ha w (C); E pota-potiloe ke austenite, carbon e le 'ngoe feela e ka kenngoang ho tsoa ho austenite e batla e lekantsoe, ha carbon e mokelikeli e fapana butle butle ho kena ho graphite ball ka har'a se tiileng, mme ho pota-potiloe ke austenite ho fokotsa kholo ea eona; Leha e le hore khabone e lekanang le tšepe ea nodular e phahame haholo ho feta ea tšepe e bohlooho, graphitization ea tšepe ea nodular e thata haholo, ka hona ha ho na katoloso e lekaneng ea graphitization ho koala solidification shrinkage; ka hona, tšepe ea nodular e tloaetse ho fokotseha.

Ho phaella moo, botenya ba lera la austenite le thatelang bolo ea graphite hangata bo feta makhetlo a 1.4 bophara ba bolo ea graphite. Ka mantsoe a mang, ha bolo ea graphite e le kholoanyane, botenya ba lera la austenite, ho ba thata le ho feta hore carbon e ka mokelikeli e fetele ho graphite ball ka austenite. E kholo [1].

Lebaka la mantlha le etsang hore tšepe e nang le silicon e tlase e sekamela molomong o mosoeu hape ke mokhoa oa ho tiisa tšepe ea ductile. Joalokaha ho boletsoe kaholimo, ka lebaka la bothata ba graphitization ea tšepe ea ductile, ha ho na mocheso o lekaneng oa sekristale o hlahisoang ke graphitization o lokelang ho lokolloa ka hlobo, e leng ho eketsang boemo ba supercooling, mme graphite ha e na nako ea ho its'oara samente. Ho phaella moo, spheroidal graphite cast iron e na le kholo le ho fokotseha ka potlako, e leng e 'ngoe ea lisosa tse atisang ho hlaseloa haholo [1].

2 Maemo a tšepe e entsoeng ka maqhubu ntle le ho lahla riser

Ha ho thata ho bona ho tsoa litšobotsing tsa ho tiisa tšepe ea ductile hore ho thata haholo ho fihlela likarolo tsa tšepe tsa ductile ntle le riser. Ho ipapisitsoe le boiphihlelo ba ka ba lilemo tse ngata tlhahisong, sengoli se entse li-generalizations le kakaretso ka maemo a hlokehang bakeng sa tšepe ea nodular ho tseba ts'ebetso ea ho lahla ntle le ho e arolelana le basebetsi-'moho mona.

2.1 Khetho ea tšepe e qhibilihisitsoeng

2.1.1 E lekanang le Carbon (CE)

Tlas'a maemo a tšoanang, graphite e nyane e bonolo ho qhibiliha ka tšepe e qhibilihisitsoeng mme ha ho bonolo ho e hola; ha graphite e ntse e hola, sekhahla sa kholo ea graphite le sona se ba kapele, ka hona graphite ea mantlha e hlahisoa pele ho eutectic ka tšepe e qhibilihisitsoeng ho ts'ehetsa ho tiea ha eutectic Graphitization ho molemo haholo. Tšepe e entsoeng ka ho qhibilihisoa e nang le sebopeho sa hypereutectic e ka kopana le maemo a joalo, empa boleng bo phahameng haholo ba CE bo etsa hore graphite e hōle pele eutectic e tiisa, 'me ha e hola ho fihlela boholo bo itseng, graphite e qala ho phaphamala, e baka likoli tse phaphameng tsa graphite. Ka nako ena, kholo ea bophahamo ba modumo e bakoang ke graphitization e tla etsa hore tšepe e qhibilihe e nyolohe, e seng feela e se nang thuso ho fepeng, empa hape hobane graphite e monya khabone e ngata ha e le mokelikeli , e tla etsa hore tšepe e qhibilihisitsoeng e tiee ha eutectic e tiile. Palo e tlase ea w (C) e bohareng e ke ke ea hlahisa eutectic graphite e lekaneng, hape e ke ke ea felisa shrinkage e bakoang ke ho tiisa hoa eutectic. Tloaelo e pakile hore ho loketse ho khona ho laola boleng ba CE lipakeng tsa 4.30% le 4.50%.

2.1.2 Silicone (Si)

Ka kakaretso ho lumeloa hore ho li-alloys tsa Fe-C-Si, Si ke setšoantšo sa graphitizing, 'me palo e phahameng ea w (Si) e na le thuso ho katoloso ea graphitization mme e ka fokotsa ho hlaha ha likheo tsa shrinkage. Ke batho ba fokolang feela ba tsebang hore Si e sitisa eitectic solidification graphitization. Ka hona, ho sa tsotelehe ho latela pono ea ho fepa kapa ho thibela tlhahiso ea graphite e arohaneng, ha feela molomo o mosoeu o ka thibeloa ka mehato e kang ho matlafatsa inoculation, palo ea w (Si) e tlameha ho fokotsoa ka hohle kamoo ho ka khonehang.

2.1.3 K'habone (C)

Tlas'a maemo a boleng bo loketseng ba CE, eketsa palo ea w (C) ka hohle kamoo ho ka khonehang. Lintlha li pakile hore litaba tsa w (C) tsa ductile iron li laoloa ho 3.60% ~ 3.70%, mme ho lahla ho na le sekhahla se nyane haholo sa shrinkage.

2.1.4 Sebabole (S)

S ke eona ntho e ka sehloohong e sitisang spheroidization ea graphite. Morero oa mantlha oa spheroidization ke ho tlosa S. Leha ho le joalo, kholo e potlakileng le ho theoha ha tšepe ea nodular cast ho amana ka kotloloho le palo e tlase ea w (S); ka hona, palo e nepahetseng ea w (S) ea hlokahala. Palo ea w (S) e ka laoloa hoo e ka bang 0.015%, mme phello ea nucleation ea MgS e ka sebelisoa ho eketsa likaroloana tsa graphite ho eketsa palo ea likarolo tsa graphite le ho fokotsa ho theoha [2].

2.1.5 Magnesiamo (Mg)

Mg le eona ke karolo e sitisang graphitization, kahoo tlasa motheo oa hore sekhahla sa spheroidization se ka fihla ho feta 90%, Mg e lokela ho ba tlase ka moo ho ka khonehang. Tlas'a boemo ba hore tšepe ea pele e qhibilihisitsoeng (O) le w (S) ha e phahame, masalla a w (Mg) a ka laoloa kahare ho 0.03% ~ 0.04% ke eona e loketseng ka ho fetisisa.

2.1.6 Lintlha tse ling

Mn, P, Cr le likarolo tse ling tse sitisang graphitization li tlase kamoo ho ka khonehang.

Ela hloko tšusumetso ea likarolo tsa mohlala, joalo ka Ti. Ha palo ea w (Ti) e le tlase, ke ntho e khothalletsang graphitization ka matla. Ka nako e ts'oanang, Ti ke ntho e etsang li-carbide le ntho e amang spheroidization mme e khothaletsa tlhahiso ea vermicular graphite. Ka hona, ho theola palo ea w (Ti), ho ba betere. Khamphani ea sengoli e kile ea ba le ts'ebetso ea ho lahla e seng e holile haholo. Ka lebaka la khaello ea nakoana ea lisebelisoa tse tala, tšepe ea kolobe e nang le aw (Ti) ea 0.1% e sebelisitsoe. Hase feela hore li-castings tse hlahisitsoeng li na le shrinkage ea bokaholimo, empa le mefuta e tsepamisitsoeng e hlahile kahare kamora ho sebetsoa. Ho fokotsa.

Ka bokhutšoanyane, lisebelisoa tse hloekileng li thusa ho ntlafatsa bokhoni ba ho iphepa ba tšepe ea ductile.

2.2 Ho tšela mocheso

Liteko li bonts'itse hore mocheso o tšollang oa tšepe ea ductile ho tloha ho 1 350 ho isa ho 1500 ℃ ha o na phello e totobetseng holima bophahamo ba sesebelisoa, empa morpholoji ea sekhahla sa shrinkage e fetoha butle-butle ho tloha mofuteng o kenelletseng ho mofuta o qhalakaneng. Boholo ba libolo tsa graphite bo eketseha butle-butle ka keketseho ea mocheso o tšollang, mme palo ea libolo tsa graphite e fokotseha butle-butle. Ka hona, ha ho na tlhoko ea ho batla mocheso o tlase haholo. Hafeela hlobo e le matla ka ho lekana ho hanela khatello ea tuli ea tšepe e qhibilihisitsoeng, mocheso o tšolohang o ka ba holimo. Ts'epe e entsoeng ka ho qhibilihisoa e sebelisetsoa ho futhumatsa hlobo ho fokotsa sekhahla sa pompo e tlase nakong ea tiiso ea eutectic, e le hore graphitization e be le nako e lekaneng ea ho tsoela pele. Leha ho le joalo, lebelo le tšolohang le lokela ho ba kapele kamoo ho ka khonehang ho fokotsa phapang ea mocheso oa tšepe e qhibilihisitsoeng ka hlobo [3].

2.3 Tšepe e batang

Ho ipapisitsoe le boiphihlelo ba mongoli ba ho sebelisa tšepe e batang le tlhahlobo ea thuto e boletsoeng kaholimo, taba ea hore tšepe e batang e ka felisa liphoso tsa shrinkage ha e nepahale. Ka lehlakoreng le leng, ts'ebeliso ea lehae ea tšepe e batang (joalo ka likarolo tse phunyeletsoeng) e ka fetisa feela sekoti sa shrinkage ho fapana le ho e felisa; ka lehlakoreng le leng, ts'ebeliso ea tšepe e batang sebakeng se seholo e ka fihlela katleho ea ho fokotsa ho fepa kapa ho se na riser. Ho eketsa matla a hlobo ka mokhoa o sa tsebeng ho e-na le tšepe e batang ho fokotsa mokelikeli o tiileng oa mokelikeli kapa oa eutectic. Ebile, haeba tšepe e batang e sebelisoa haholo, e tla ama kholo ea bolo ea graphite le boemo ba graphitization, ho fapana le hoo e tla mpefatsa shrinkage.

2.4 Matla a hlobo le ho satalla

Kaha tšepe ea ductile hangata e khetha sebopeho sa eutectic kapa hypereutectic, ho nka nako e teletsana hore tšepe e qhibilihisitsoeng e pholile ho mocheso oa eutectic ka hlobo, ke hore, khatello ea hydrostatic ea hlobo e telele ho feta ea sebopeho sa eutectic. Haeba tšepe e putsoa e le telele, hlobo e tloaetse ho fetoha habonolo. Ha keketseho ea bophahamo ba modumo e bakoang ke katoloso ea graphitization e ke ke ea koala sekhahla sa mokelikeli + sa solidification shrinkage + bophahamo ba hlobo, likhahla tsa shrinkage li ke ke tsa qojoa. Ka hona, ho tenyetseha ha hlobo e lekaneng le matla a khatello ke maemo a bohlokoa bakeng sa ho tseba ho betsa ntle le riser. Ho na le mekhoa e mengata ea ho betla tšepe e koahetsoeng ka lehlabathe ho hlokomela ho lahla ntle le bopaki ke bopaki ba khopolo ena.

2.5 Kalafo ea ente

Ts'ebetso e matla ea ente e kenang ka potlako le ho lieha ho kenella hang ha e fe tšepe e qhibilihisitsoeng palo e kholo ea likaroloana tsa mantlha, empa hape e thibela ho entoa hore e fokotsehe, hape e ka netefatsa hore tšepe ea ductile e na le libolo tsa graphite tse lekaneng nakong ea ho tiisa ha eutectic; libolo tse kholo le tse nyane tsa graphite lia fokotsa Ho fetisoa ha sebaka sa C ka mokelikeli ho ea mokokotlong oa graphite ho potlakisa lebelo la graphitization. Ka nako e khuts'oane, palo e kholo ea ho tiea ha eutectic e ka ntša mocheso o ipatileng oa crystallization, ea fokotsa sekhahla sa supercooling, mme ea thibela moloko oa melomo e mosoeu, empa hape E ka matlafatsa katoloso ea graphitization. ka hona. Ho entoa ka matla ho bohlokoa ho ntlafatsa bokhoni ba ho iphepa ba tšepe ea ductile.

2.6 Metsi mokelikeli karaoke set

Ka mor'a hore tšepe e entsoeng ka ho qhibilihisoa e tlhotloe, ho khuoa li-inclusions tse ling, e le hore phofshoana e nyane ea tšepe e entsoeng ka ho qhibilihisoa e ntlafatsoe, 'me monyetla oa ho fokotseha ho honyenyane o ka fokotsoa.

2.7 Ho lahla modulus

Kaha as-cast pearlitic ductile iron e hloka ho eketsa likarolo tse sitisang graphitization, sena se tla ama boemo ba graphitization mme se be le phello e itseng ho phethahatseng ho iphepa ha castings. Ka hona, ho na le likenyelletso tsa data. Ho lahla ntle le Riser ho loketse ductile graphites e ka tlase ho QT500. tšepe ea tšepe. Ntle le moo, modulus e khethiloeng ke sebopeho le boholo ba ho betsa e lokela ho ba bonyane 3.1 cm.

Ke habohlokoa ho hlokomela hore ho ke ke ho le thata ho finyella riser ntle foromeletsoeng ho castings poleiti le botenya ba ka tlase ho 50 limilimithara.

Ho boetse ho na le tlhaiso-leseling ea hore boemo ba ho tseba ts'ebetso ea ho lahla ntle le tšepe bakeng sa tšepe ea nodular kaholimo ho QT500 ke hore modulus ea eona e lokela ho ba kholo ho feta 3.6 cm.

Ka kopo boloka mohloli le aterese ea sengoloa sena hore se hatisoe hape: Maemo a ho phethahala ha tšepe ea tšepe ea nodular ntle le riser

Minghe Khamphani ea Die Casting li inehetse ho etsa le ho fana ka boleng bo phahameng le likarolo tse phahameng tsa ho lahla likarolo Thining-Wall Die Casting,Hot Chamber Die lahla,Cold Chamber shoa lahla), Tšebeletso e chitja (Die Casting Service,Cnc Machining,Ho Etsa Mofuta, Bokaholimo Phekolo) .Na tloaelo efe kapa efe ea Aluminium die die cast, magnesium kapa Zamak / zinc die casting le litlhoko tse ling tsa castings lia amoheleha ho ikopanya le rona

Tlas'a taolo ea ISO9001 le TS 16949, lits'ebetso tsohle li etsoa ka mechini e makholo ea li-die casting, mechini e 5-axis le lits'ebeletso tse ling, ho tloha ho li-blasters ho isa mechini ea ho hlatsoa ea Ultra Sonic. sehlopha sa baenjiniere ba nang le boiphihlelo, lisebelisoa le bahlahlobi ho etsa moralo oa moreki o phethahala.

Moetsi oa konteraka oa li-cast cast. Bokhoni bo kenyelletsa likarolo tse batang tsa aluminium die die likarolo tsa 0.15 lbs. ho isa ho li-6 lbs., Ho theha phetoho e potlakileng, le machining. Litšebeletso tse kenyellelitsoeng boleng li kenyelletsa ho bentsa, ho thothomela, ho qhekella, ho phatloha ha lithunya, ho penta, ho roala, ho roala, kopano le lisebelisoa. Lisebelisoa tse sebelisitsoeng le tsona li kenyelletsa lits'epe tse kopantsoeng tse kang 360, 380, 383 le 413.

Zinc e shoa ho lahla thuso ea moralo / lits'ebeletso tsa boenjineri tse tšoanang. Moetsi oa moetlo oa li-castings tsa zinc tse nepahetseng. Li-castings tse nyane, li-castings tse phahameng tsa khatello, li-cast cast tsa hlobo, li-castings tse tloaelehileng tsa hlobo, li-unit tsa die le li-cast cast tse ikemetseng le li-cast cast tse tiisitsoeng li ka etsoa. Li-castings li ka etsoa ka bolelele le bophara ho fihlela 24 ho. Ho +/- 0.0005 ho. Mamello.  

ISO 9001: Moetsi ea netefalitsoeng oa 2015 oa magnesium ea die die, Bokhoni bo kenyelletsa khatello e phahameng ea khatello ea magnesium die cast to 200 ton room & 3000 kamoreng e batang, moralo oa lithulusi, polishing, molding, machining, powder & liquid paint, QA e felletseng e nang le bokhoni ba CMM , kopano, ho paka le ho tsamaisa.

ITAF16949 e netefalitsoe. Ts'ebeletso e 'ngoe ea ho lahla e kenyeletsa ho lahla lichelete,ho lahla lehlabathe,Matla a khoheli, Lahlehileng bubble lahla,Ho ts'oaroa ha Centrifugal,lephaka lahla,Sa Feleng hlobo lahlaBokhoni bo kenyelletsa EDI, thuso ea boenjiniere, ho etsa mohlala o tiileng le ho sebetsoa ka bobeli.

Lahla Liindasteri Liphuputso tsa likarolo tsa likarolo tsa: Likoloi, libaesekele, lifofane, liletsa tsa 'mino, sesepa sa metsi, lisebelisoa tsa Optical, li-sensor, mehlala, lisebelisoa tsa elektroniki, masaka, lioache, mechini, lienjine, thepa ea ka tlung, mabenyane, mabenyane, telecom, mabone, lisebelisoa tsa bongaka, lisebelisoa tsa litšoantšo, Liroboto, Litšoantšo tse betliloeng, Lisebelisoa tsa molumo, Lisebelisoa tsa lipapali, Lithulusi, Lipapali le tse ling. 

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