I-Cast Iron Esebenzisekayo

I-cast cast iron ethambile itholakala ngokuthela insimbi encibilikisiwe enekhemikhali ethile ezikhaleni ezimhlophe bese iphathwa ngokuhushulwa. I-graphite ku-cast cast iron ethambile ngokuyinhloko i-flocculent futhi ngezinye izikhathi inani elincane lamapellets. Isakhiwo se-matrix esiyinhloko se-cast cast iron ethambileyo i-ferrite ne-pearlite. Ngokuya ngezimo ezihlukene zokwelashwa kokushisa, insimbi esansimbi ethambile ingahlukaniswa ibe insimbi esakhiwe ethambile etholakala kalula kanye ne-decarburization annealing cast cast iron ethambileyo.

Izinga lokushisa elijwayelekile lensimbi yensimbi ethambile isondelene naleyo yensimbi eyi-nodular cast ene-matrix efanayo. Ngaphansi kwezimo zokushisa eziphansi, ukuqina komthelela nokusebenza kokusika kwensimbi ethambile ethambile kungcono kunaleyo ye-nodular cast iron. Izinsimbi ezisansimbi ezithambile zisetshenziswa kakhulu ekwakheni, izimoto, ogandaganda, imishini yezolimo kanye neminye imikhakha. Ukubunjwa kwensimbi ephathekayo kuvame ukusetshenziselwa ukuxhuma amapayipi, izibophelelo zokwakha, izindololwane, amateki, imizimba yama-valve, ama-wrenches, amagobolondo ojeke, izisekelo zamaqabunga amaqabunga, abakaki, izindlu ze-asili, izinti zokuxhuma injini, izingalo ze-rocker, njll. Ukwelashwa kokushisa kokubunjwa okuthambile. insimbi ikakhulukazi ihlanganisa i-graphitization annealing kanye ne-decarburization annealing.

Izakhiwo ze-Malleable Cast Iron

1. Izakhiwo Zemishini
Isilinganiso samandla esivuno namandla aqinile ensimbi egayiwe ethambile siseduze naleso sensimbi egayiwe yebhola, kodwa singaphezulu ngo-60% ~ 80% ngaphezu kwalokho kwe-carbon steel. I-cast cast iron ethambile ifaneleka kakhulu ukusebenza emazingeni okushisa aphansi kune-ball milled cast iron.

2. Ukusebenza Kwenqubo
Ngenxa yokuthi okuqukethwe kwe-carbon ne-silicon yensimbi ethambile ethambile iphansi, i-eutectoid degree incane, futhi i-billet yokuphonsa icwebezela ngokwesistimu ye-metastable, ukusebenza kokuphonswa kwensimbi ethambile ethambile akulungile, futhi ukubunjwa kuthambekele ekubeni neziphambeko ezinjalo. njengokwehluleka ukuthulula, umgodi wokushwabana, ukushwabana kwe-porosity, nokuqhekeka. Ukuze kuvinjwe lezi zinkinga, izinyathelo kufanele zithathwe njengokwenyusa izinga lokushisa elithelayo, abagijimi bezindlela, ukukhulisa amakhanda okucindezela okukhulu, ukwengeza izikhuphukeli, ukufaka insimbi ebandayo, kanye nokwenza ngcono ukugoqeka kwesihlabathi esibumba nesihlabathi esiwumgogodla lapho uklama inqubo yokuphonsa.

3. Ukusebenza Kwemishini
I-Ferritic malleable cast iron inobulukhuni obuphansi, futhi ukusebenza kwayo kokusika kungcono kune-grey iron castings nensimbi esika mahhala. Ngakho-ke, i-ferritic cast iron iron ethambile iwumsebenzi osebenza kahle kakhulu phakathi kwama-alloys e-iron-carbon. I-Pearlitic malleable cast iron inobunzima obuphakeme kanye nokusebenza okubi kakhulu kokusika.

4. Ukusebenza Kwe-Welding
Izinsimbi ezisansimbi ezithambile ezinenhliziyo emnyama nezinsimbi ezisansimbi ezithambileyo ze-pearlite ngokuvamile azifanelekile ukushiselwa, ngoba imilomo emhlophe ephukayo izokhiqizwa endaweni yokushisela. Umlomo omhlophe uzoqhekeka ngaphansi kwengcindezi yokushisela. Kuma-castings athwala imithwalo emincane eqinile, egobayo, kanye nomthelela, noma asetshenziselwa ikakhulukazi ukuthwala ukucindezelwa kanye ne-torque encane, uma i-welding idingeka, ama-castings adinga ukushisisa ngaphambi kokushisela, futhi ukulondolozwa kokushisa nokupholisa kancane kuyadingeka ngemva kokushisela. Uma kunesidingo, ukudonsa kabusha kuyadingeka ukuze kuqedwe usimende kanye nengcindezi ezungeze i-weld. Kodwa-ke, ukubunjwa okuthambile okuyisisekelo okumhlophe kunokusebenza okuhle kwe-welding, ngakho-ke kubizwa nangokuthi insimbi yensimbi ethambileyo ethambileyo.

5. Ukumelana Nomhuzuko
Ukumelana nokugqokwa kwe-pearlite cast iron malleable cast iron kungcono kunokwensimbi ye-carbon ejwayelekile. Ngakho-ke, i-pearlite malleable cast iron ifanele ukuphonsa izingxenye ezinezidingo ezithile zamandla nokumelana nokugqoka. Ngokucisha ukwelashwa kokushisa, ubulukhuni bokusakazwa kwensimbi ephathekayo bungafinyelela ku-60 HRC, futhi ukumelana kwayo nokugqokwa kungalingana nokwensimbi ene-alloy ephansi. Kodwa-ke, i-ferritic malleable cast iron ayifanele izingxenye ezingagugi.

6. Ukumelana Nokushisa
Ukumelana nokushisa kwe-ferritic cast iron metalableable iron and pearlite malleable cast iron kungcono kune-grey cast iron kanye ne-carbon steel, futhi ukumelana nokushisa kwe-ferritic metalableable cast iron kungcono kune-pearlite cast iron metalable.

7. Ukumuncwa Okushaqisayo
Ngenxa yethonya lomumo we-graphite, insimbi esakhiwe ethambile inokumunca okuphansi kokushaqeka kunensimbi empunga futhi ingcono kune-ductile cast iron nensimbi ephonswe. Ngaphansi kwengcindezi ephansi, ukusebenza okudambisayo kwe-ferritic metalableable cast iron kucishe kufane naleyo yensimbi eyi-spheroidal milled cast iron, kodwa ngaphansi kwengcindezi ephakeme, ukusebenza okudambisayo kwensimbi ethambile ethambile cishe izikhathi ezi-3 kunezinsimbi ezisansimbi futhi izikhathi ezi-2 i-ductile cast iron.