Malleable Cast Iron

Simbi inonyunguduka inowanikwa nekudira simbi yakanyungudutswa ine imwe kemikari inoumbwa mumachira machena uye yozobatwa nekunyungudutswa. Graphite musimbi inogoneka yakakandwa inonyanya kuyerera uye dzimwe nguva idiki diki repellets. Iyo huru matrix chimiro chesimbi inogoneka yakakandwa ndeye ferrite uye pearlite. Zvinoenderana neakasiyana mamiriro ekupisa kupisa, inoumbika yakakandwa simbi inogona kukamurwa kuita graphitized annealing malleable cast iron uye decarburization annealing malleable cast iron.

Iyo yakajairika tembiricha yekumisikidza zvimiro zvesimbi inogoneka yakakandwa iri padyo neiyo yenodular cast iron ine matrix akafanana. Pasi pemamiriro ekunze ekupisa, kuoma kwesimba uye kucheka kuita kwesimbi inogoneka kuri nani pane iyo yenodular cast iron. Malleable cast iron castings anoshandiswa zvakanyanya mukuvaka, mota, matirakita, michina yekurima nemimwe minda. Malleable iron castings anowanzo shandiswa kukanda mapombi ekubatanidza, zvisungo zvekuvaka, magokora, matee, mavharuvhu miviri, wrenches, jack shells, shizha chitubu zvinotsigira, mabhuraketi, ekisero housings, injini yekubatanidza tsvimbo, rocker maoko, nezvimwewo. iron inonyanya kusanganisira graphitization annealing uye decarburization annealing.

Zvivakwa zveMalleable Cast Iron

1. Mechanical Properties
Huyero hwekusimba kwegoho kusimba rekusimba resimbi inogadzika iri pedyo neiyo yebhora milled cast iron, asi inenge 60% ~ 80% yakakwirira kupfuura iyo carbon steel. Iron inogoneka yakakandwa inonyatsokodzera kushanda patembiricha yakaderera pane bhora rakagayiwa simbi yakakandwa.

2. Process Performance
Nekuti zvirimo zvekabhoni nesilicon yesimbi inokwenenzveka yakadzikira, iyo eutectoid dhigirii idiki, uye iyo yekukanda billet inopenya zvinoenderana nemetastable system, kukanda kuita kwesimbi inokwenenzverwa kunokanganisa kwakashata, uye kukanda kunowanzo kukanda zvikanganiso zvakadaro. sekutadza kudira, shrinkage cavity, shrinkage porosity, uye kutsemuka. Kuti udzivise hurema uhu, matanho anofanirwa kutorwa sekuwedzera tembiricha yekudurura, nzira dzekumhanya, kuwedzera kudzvanywa misoro, kuwedzera risers, kuisa simbi inotonhorera, nekuvandudza kuparara kwejecha rekuumba uye jecha repakati paunenge uchigadzira maitiro ekukanda.

3. Machining Performance
Ferritic malleable cast iron ine yakaderera kuomarara, uye kuita kwayo kwekucheka kuri nani pane grey iron castings uye yemahara-yekucheka simbi. Naizvozvo, ferritic inogoneka yakakandwa simbi chinhu chine yakanakisa kugadzirisa mashandiro pakati pesimbi-carbon alloys. Pearlitic malleable cast iron ine kuomarara kwepamusoro uye kushomeka kwekucheka kuita.

4. Welding Performance
Mwoyo wakasviba unogadzika simbi uye pearlite inogoneka yakakandwa simbi kazhinji haina kukodzera kusungirirwa, nekuti miromo michena ine brittle inogadzirwa munzvimbo yewelding. Muromo muchena uchatsemuka pasi pekunetseka kwewelding. Kune ma castings anotakura diki diki, kukotama, uye kukanganisa mitoro, kana anonyanya kushandiswa kutakura compression uye diki torque, kana welding ichidikanwa, ma castings anofanirwa kupiswa asati apisa, uye kuchengetedza kupisa uye kunonoka kutonhora kunodiwa mushure mewelding. Kana zvichidikanwa, kudzoreredza-annealing kunodiwa kubvisa simenti uye kushushikana kwakatenderedza weld. Nekudaro, iyo chena core inogoneka casting ine yakanaka welding performance, saka inonziwo weldable malleable cast iron.

5. Abrasion Resistance
Iko kusamira kwekupfeka kwepearlite inogadzika simbi yakakandwa iri nani pane iyo yakajairwa kabhoni simbi. Naizvozvo, pearlite inogadzika simbi yakakandwa inokodzera kukanda zvikamu zvine zvimwe zvinodikanwa zvekusimba uye kupfeka kuramba. Kuburikidza nekudzima kurapa kwekupisa, kuoma kwesimbi inogadzika simbi inogona kusvika 60 HRC, uye kupfeka kwayo kuramba kunogona kuenzana nesimbi yakaderera-alloy. Nekudaro, ferritic inogadzika simbi yakakandwa haina kukodzera kupfekwa-inodzivirira zvikamu.

6. Heat Resistance
Kupisa kwekupisa kweferritic inogadzika simbi yakakandwa uye pearlite inogadzika simbi iri nani pane grey cast iron uye kabhoni simbi, uye kupisa kwekupisa kweferritic inogadzika simbi yakakandwa iri nani pane iyo pearlite inogadzika simbi yakakandwa.

7. Shock Absorption
Nekuda kwekupesvedzera kwechimiro chegraphite, simbi inokwenenzverwa ine kunyura kwakaderera pane grey cast iron uye zvirinani pane ductile cast iron nesimbi yakakandwa. Pasi pekunetseka kwakaderera, kuita kwekunyorovesa kweferritic inogadzika simbi yakakandwa yakada kufanana neye spheroidal milled cast iron, asi pasi pekunetseka kwakanyanya, kuita kwekunyorovesa kweferritic inogadzika simbi yakakandwa ingangoita 3 nguva yesimbi yakakandwa uye 2 nguva iyo ductile cast iron.