420 SSFiilada buufinta kuleylka (Birta aan Daxalka lahayn) waa walax tayo sare leh oo loogu talagalay codsiyada buufinta qaansada. Waxaa loo yaqaanaa iska caabbinta daxalka ee aadka u fiican, adkaanta sare, iyo iska caabbinta xirashada wanaagsan, 420 SS waa bir aan daxal lahayn oo martensitic ah oo bixisa ilaalin dusha sare oo adag. Fiiladan waxaa badanaa loo isticmaalaa warshadaha sida batroolka kiimikada, korontada, baabuurta, iyo badda si loo xoojiyo cimriga iyo cimriga qaybaha muhiimka ah. Fiilada buufinta kulaylka ee 420 SS waxay ku habboon tahay codsiyada u baahan dahaar adag oo u adkaysta xirashada oo leh iska caabbinta daxalka dhexdhexaadka ah.
Diyaarinta dusha sare ee saxda ah ayaa muhiim u ah gaarista natiijooyin wanaagsan iyadoo la isticmaalayo silig buufin kuleyl ah oo 420 SS ah. Dusha sare ee la dahaadhayo waa in si taxaddar leh loo nadiifiyaa si looga saaro wasakhda sida dufanka, saliidda, wasakhda, iyo oksaydhyada. Gubashada jajabka oo leh aluminium oksaydh ama silicon carbide ayaa lagula talinayaa si loo gaaro qallafsanaanta dusha sare ee 50-75 microns. Dusha sare ee nadiifka ah oo qallafsan waxay kor u qaaddaa dhegganaanta dahaarka buufinta kulaylka, taasoo horseedaysa waxqabad wanaagsan iyo cimri dheer.
| Walax | Halabuurka (%) |
|---|---|
| Kaarboon (C) | 0.15 – 0.40 |
| Chromium (Cr) | 12.0 – 14.0 |
| Manganese (Mn) | 1.0 ugu badnaan |
| Silikoon (Si) | 1.0 ugu badnaan |
| Fosfooraska (P) | 0.04 ugu badnaan |
| Sulfur (S) | 0.03 ugu badnaan |
| Bir (Fe) | Dheelitirnaan |
| Hantida | Qiimaha Caadiga ah |
|---|---|
| Cufnaanta | 7.75 g/cm³ |
| Barta Dhalmada | 1450°C |
| Adkaanta | 50-58 HRC |
| Xoog Xadhig ah | 55 MPa (8000 psi) |
| Iska caabinta oksaydhka | Wanaagsan |
| Qaboojinta Kulaylka | 24 W/m·K |
| Kala duwanaanshaha dhumucda dahaadhka | 0.1 – 2.0 mm |
| Daloolada daloolsan | < 3% |
| Xidho Iska caabinta | Sare |
Fiilada buufinta kulaylka ee 420 SS waa xal aad u fiican oo lagu xoojinayo sifooyinka dusha sare ee qaybaha u nugul xirashada iyo daxalka dhexdhexaadka ah. Adkaynteeda sare iyo iska caabinta xirashada wanaagsan waxay ka dhigaysaa mid ku habboon codsiyada u baahan dahaar waara oo waara. Iyagoo isticmaalaya silig buufin kuleyl ah oo 420 SS ah, warshaduhu waxay si weyn u horumarin karaan cimriga adeegga iyo isku halaynta qalabkooda iyo qaybaha.
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