Chii chinonzi iron iron?
Cast iron iboka remasimbi alloys ayo anowanzo aine pakati pe2% ne4% carbon.Zvichienderana nerudzi rwesimbi yakakandwa, inogona kutosvika pakakwirira se5%.Inoumbwa nekunyungudutsa iron ore kana nguruve iron uye nekuisanganisa nemhando dzakasiyana dzesimbi uye mamwe maalloys.Iyo yakanyungudutswa inobva yadirwa muforoma.Inoomesa muchimiro cheforoma isingakanganisi simba rayo.Cast iron's yakakwira-carbon yemukati inopa iyo yakatanhamara kupfeka kuramba uye kusimba.
Chii chinoumbwa nesimbi yakakandwa?
Simbi inokwenenzveka inogadzirwa kuburikidza nekupisa kwekupisa kwesimbi yakakandwa.Iyi nzira inoderedza carbon content uye inovandudza kushanda uye ductility.Pakutanga, simbi yakachena yakakanda - imwe mhando yesimbi yakakandwa ine high carbon content - inokandwa.Inobva yapisa pazasi pekunyungudika kwayo kwenguva yakareba, zvichiita kuti kabhoni ichinje kuita graphite.Izvi zvinokonzeresa kuumbwa kwemanodule kana mativi, zvichigadzira simbi inogadzika.Iyo annealing process inoderedza brittleness, inosimudzira kuramba kune mafractures uye inogonesa kukotama uye kuumbwa pasina kutsemuka.
Cast-iron properties
Chii chinonzi cast iron?Izvo zvinoenderana nerudzi rwesimbi yakakandwa, yatanyora pazasi.Iyo yakakwira iyo kabhoni yemukati, iyo inowedzera brittle simbi yakakandwa, zvichiita kuti iite panjodzi yekutsemuka nekutyoka mukushushikana.Nehupamhi hwekupisa kwekupisa, simbi yakakandwa zvakare ine yakanakisa kuchengetedza kupisa.
| Mhando yesimbi yakakandwa | Zvinhu zvesimbi yakakandwa |
| Gray cast iron | Lower tensile simba uye kwete se ductile semamwe simbi dzakakandwa;corrosion resistant;yakanyanya brittle - yakaoma kugadzira nzvimbo yakatsetseka;yakanakisa thermal conductor uye yakakwira mwero wevibration damping. |
| White cast iron | Not weldable;simba rakanyanya rekumanikidza uye rakanaka kupfeka kusagadzikana;yakanakisa zvivakwa kune yakaderera-imect application. |
| Ductile cast iron | Nodular graphite mune yayo microstructure kuburikidza nekuwedzera kwe magnesium, inopa yakakwirira simba, kuoma uye ductility kupfuura grey iron. |
| Simbi yegraphite yakasungirirwa | Graphite chimiro, zvivakwa zvakabatana musanganiswa wegrey uye chena simbi, yakakwirira tensile simba uye yakagadziridzwa ductility pane grey iron. |
simbi yakakandwa inoshandiswa nei?
Kushandiswa kwe-cast-iron kunoenderana nemhando ye-cast-iron.Iwe uchaona kumwe kupindirana pazasi.Isu takabatanidzawo kushandiswa kwesimbi inogadzika.
| Simbi yakakandwa yakashandiswa | Zvishandiso zvesimbi yakakandwa |
| Gray cast iron | Mapombi, miviri yevharuvhu, zvikamu zvevharuvhu, dzimba dzemidziyo yemuchina, madhiramu emabhureki |
| White cast iron | Zvishandiso uko kune kutsvedza kunotsvedza pakati penzvimbo mbiri, kureva ma plates & liner emidziyo yemugodhi, masimende anosanganisa, zvigayo zvebhora uye kumwe kudhirowa kunofa & extrusion nozzles. |
| Ductile cast iron | Mapombi emvura & esuweji, tirakita & midziyo yekushandisa, mota nedhiziri crankshafts, piston & cylinder misoro;magetsi ekuisa, chinja mabhokisi, mota mafuremu & chedunhu breaker zvikamu;midziyo yekuchera migodhi: madhiramu ekusimudza, madhiraini ekutyaira, mavhirivha nemabhakiti ekusimudza;& chigayo chesimbi: magonhi echoto & tafura rolls |
| Simbi yegraphite yakasungirirwa | Diesel engine blocks, turbo housings, exhaust manifolds |
| Simbi inokwenenzveka | Zvemotokari dhiraivha chitima & axle zvikamu, zvekurima uye njanji zvekushandisa;zvakare, majoini ekuwedzera uye kukanda kutuka pamabhiriji, macheni-hoist magungano, maindasitiri macasters, pombi fittings, & matanda ekubatanidza. |
Kanda simbi vs simbi inogadzika
Zvimiro zvesimbi inokwenenzverwa zvinosanganisira machinability, kuoma uye ductility.Shock resistant, ine yakanakisa kugona kumirisana nepamusoro pekushushikana.
Simbi inogadzika iri nyore kushanda nayo pane simbi yakakandwa.Semuyenzaniso, simbi inoumbika kana pombi inogadzika zvinogoneka mumagadzirirwo akaomarara.Iyo inowanzo ine yakakwirira yekunyunguduka kupfuura simbi yakakandwa pa 1260 ° C - zvakare, izvi zvinoenderana nealloys musimbi yakakandwa, sehuwandu hwekabhoni hurimo.Asi simbi yakanyungudutswa kazhinji yakaderera inonyungudika inoipa zvirinani kunyunguduka, zvekuti inodururwa zviri nyore muforoma pasina kutonhora zvakanyanya.
Mumwe kuenzanisa: simbi inoumbika vs. cast iron fittings.Simbi inoumbwa haigone kuputswa kuti ibviswe zviri nyore, semagadziro esimbi anokandwa.
Zvakanakira zvesimbi inokwenenzverwa
Kushandiswa kwesimbi inoumbika kunobatsira riini?Paunenge uchida izvi zvinobatsira:
Ductility - yakanakira maapplication ayo anoda yakakura machining panguva yekupedza.Kana ichienzaniswa ne ductile iron, haina mwero wakafanana wekusimba kwesimba, elasticity uye kukanganisa kupikisa, asi ichiri nyore kugonesa machining pasina kutyora.
Inogona kugadzikiswa uye kugadzirwa nenyundo, zvichienzaniswa nemamwe simbi dzakakandwa dzinotsemuka kana kutyoka.
- Yakada kusimba kunge grey cast iron.
- Good impact resistance pane tembiricha yakaderera zvakanyanya.
Kuipa kwesimbi inogadzika
Hunhu hwemuviri hwesimbi inokwenenzverwa simbi ine zvayakaipira, Gara uchicherechedza kuderera kwechinhu:
Inodzikira kana yatonhodzwa, sezvo inorasikirwa nehuwandu.Masimbi ese akakandwa - kana chero chinhu - anoita izvi kune imwe nhanho, asi zvinonyanya kutaurwa nesimbi inoumbwa.
Low corrosion resistance.
Haina kusimba se ductile cast iron kana simbi.Kune maapplication anoda yakakwirira tensile kana kumanikidza simba, sarudza imwe cast iron.
Inogona zvakare kuita brittle pakupisa kwakanyanya, zvichiita kuti ive panjodzi yekutsemuka.
Nguva yekutumira: May-13-2024