Ujeedada ugu weyn ee daaweynta xalka adag ee shubka birta ah waa in la milo carbide ama wejiyada kale ee degdegay ee xal adag si aad u hesho qaab-dhismeedka hal-waji supersaturated. Tuubitaanka birta aan dawliga ahayn ee austenitic, birta manganese austenitic iyo adkaynta birta roobka waa in guud ahaan xal adag la daweeyaa.
Roobabka Martensitic Adkeynta birta aan lahayn guud ahaan waxay ka kooban tahay kaarboon wax ka yar 0.1%. Ku xooji adoo ku daraya walxo qallafsan (naxaas, aluminium, titanium iyo aluminium, iwm.) si loo sameeyo awood la'aanta. Waxa ku jira chromium guud ahaan wuu ka sarreeyaa 17%, iyo qadar ku habboon oo nikel ah ayaa lagu daraa si loo hagaajiyo caabbinta daxalka.
Maaraynta roobabka adkeynaysa birta birta ah waa nooc ka mid ah birta daawaha leh ee ka kooban kaarboon aan ka sarrayn 0.03% si loo hubiyo adkaanta, iska caabinta daxalka, alxanka iyo shaqada matrixka martensite, iyo 12% chromium si loo hubiyo iska caabbinta daxalka. Intaa waxaa dheer, cobalt element alloy ayaa lagu daraa si loo sii wanaajiyo saameynta daaweynta kulaylka ee birta.
Roobab-Semi-austenitic ah oo adkeynaya birta-la'aanta, taas oo ah, roobab ku-meel-gaar ah oo adkeynaya birta-la'aanta, oo ka kooban wax aan ka yarayn 12% chromium. Waxay leedahay kaarboon yar, iyo aluminium oo ah cunsurkeeda ugu weyn ee adkeynta roobabka. Roobabka noocan oo kale ah adkaynta birta aan lahayn ayaa leh waxqabad guud oo ka wanaagsan marka loo eego roobabka martensitic ee adkaynaya birta aan-suuxdinta lahayn.
Adkeynta roobabka Austenitic waa bir aan bir lahayn oo leh qaab dhismeed austenite deggan labada gobol ee la demiyay iyo kuwa gabowga ah. Waxyaabaha ku jira nikkel iyo manganese-ka ayaa aad u sarreeya, iyo waxa ku jira chromium ayaa ka sarreeya 13% si loo hubiyo caabbinta daxalka iyo caabbinta oksaydhka. Isla mar ahaantaana, roobka austenitic-ka ee adkeynaya birta birta ah waxay badanaa ku daraa titanium, aluminium, vanadium ama fosfooraska sida walxaha adkeynaya roobabka, waxayna ku daraan qadar yar oo boron, vanadium, nitrogen iyo walxo kale si loo helo sifooyin dhammaystiran oo heer sare ah.
Aasaaska RMC ayaa Qaaday darajooyinka Caadiga ah ee soo socda
- 1- Heerarka Shiinaha: 05Cr15Ni5Cu4Nb, 05Cr17Ni4Cu4Nb
- 2- British Standard: ANC20, ANC21, ANC22
- 3- Heerarka Mareykanka: 630, 634, 17-4PH, 15-5PH, CB7Cu-1
- 4- Heerarka Jabbaan: SCS24, SCS32
- 5- Heerka Jarmalka: 1.4542


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