Ductile iron cast for track roller end cover

Kenyelletso e Khutšoanyane:

DUctile iron, eo hape e tsejoang e le ductile cast iron, nodular cast iron, spherical graphite iron, spherical graphite cast iron and SG iron, ke mofuta oa tšepe e entsoeng ka graphite e ngata e fumanoeng ka 1943 ke Keith Millis.Le hoja mefuta e mengata ea tšepe ea tšepe e fokola ka tsitsipano le brittle, tšepe ea ductile e na le tšusumetso e ngata le ho hanyetsa mokhathala, ka lebaka la ho kenngoa ha eona ka nodular graphite.Tšepe ea ductile hase ntho e le 'ngoe empa ke karolo ea sehlopha sa lisebelisoa tse ka hlahisoang ka mefuta e mengata ea thepa ka ho laola microstructure ea bona.Tšobotsi e tloaelehileng e hlalosang sehlopha sena sa lisebelisoa ke sebōpeho sa graphite.Liaeneng tsa ductile, graphite e ka sebopeho sa maqhutsu ho fapana le li-flakes joalo ka tšepe e putsoa.Le hoja li-graphite flakes li etsa hore ho be le khatello ea kelello ka har'a matrix ea tšepe, li-nodule tse chitja li thibela ho thehoa ha mapetsong, kahoo li fana ka ductility e ntlafetseng e fanang ka lebitso la alloy.

Austempered ductile iron (ADI; ke hore, austenite tempered[7]) e ile ea sibolloa ka bo-1950 empa e ile ea rekisoa 'me ea atleha lilemo tse seng kae hamorao.Ka ADI, mohaho oa metallurgical o sebelisoa ka mokhoa o rarahaneng oa ho phekola mocheso.

Sebopeho

Karolo ea boima (%) bakeng sa litšepe tse entsoeng ka tšepe ea ferritic ductile[8]

Mefuta e meng ea tšepe ea ductile hangata e na le sebabole se senyenyane.

Khabone, 3.2–3.60%

silicon, 2.2–2.8%

Manganese, 0.1–0.2%

Magnesium, 0.03–0.04%

Phosphorus, 0.005–0.04%

Sebabole, 0.005–0.02%

Koporo, <0.40%

Tšepe, ho leka-lekana

Lintho tse kang koporo kapa thini li ka eketsoa ho eketsa tsitsipano le ho fana ka matla ha ka nako e le 'ngoe ho fokotsa ductility.Ho hanyetsa kutu ho ntlafetseng ho ka finyelloa ka ho nkela 15-30% ea tšepe sebakeng sa motsoako ka mefuta e sa tšoaneng ea nickel, koporo kapa chromium.

Silicon e le karolo ea sebopeho sa graphite e ka nkeloa sebaka ke aluminium ho fana ka tšireletso e ntle ea oxidation.[9]

HONGDASekepe sa tšepelintlha:

Mathoasong a 2021, HONGDA e ile ea haha ​​​​fektheri e ncha ho hlahisa lisebelisoa le mohala oa tlhahiso bakeng sa Ductile Iron casting.
1. Boitsebiso: QT450#-10 le sekhahla sa Spheroidization se feta boemo ba III ho fumana boleng bo botle ba ho bapala ho tšehetsa kopo ea hau.
2. Mohala oa tlhahiso o ikemetseng ho fihlela katleho e phahameng le tlhahiso e kholo ea bokhoni, 550T / Khoeli, ho khutlisetsa tlhoko ea hau e potlakileng.
3.Applications: ductile iron castings for roller collar, idler bracket and so like parts castings ka hare ho 70KGS.