Iibinta dammaanadda ee soo saaraha tuubooyinka birta ee 30CrMo
30CrMo birta birta birta ah waxay leedahay kaarboonka 0.26 ~ 0.34, content silicon of 0.17 ~ 0.37, content manganese of 0.40 ~ 0.70, content molybdenum of 0.15 ~ 0.25, content chromium of 0.80 ~ 1.10. Waxaa jira labadaba xiriir iyo kala duwanaansho u dhexeeya tuubooyinka alloy-ga iyo tuubada aan cillad lahayn, kuwaas oo aan la isku khaldi karin. Tuubbada Alloy waxaa lagu qeexaa sida birta birta iyadoo loo eegayo alaabta wax soo saarka (ie walxo). Sida magaca ka muuqata, waa tuubo ka samaysan alwaax; Dhuumaha aan cillad lahayn waxaa lagu qeexaa iyadoo loo eegayo habka wax soo saarka ee tuubada birta (seamless seam). Waxa ka duwan tuubooyinka aan tolitaanka lahayn, oo ay ku jiraan tol toosan oo alxan leh iyo tuubo wareeg ah. 35CrMo, 16-50mn, 27SiMn, 40Cr, Cr5Mo 12Cr1MoV 12Cr1MoVG 15CrMo 15CrMoG 15CrMoV 13CrMo44 T91 27SiMn 25CrMo 35CrMov15CrMo15CrMoG P22.p91. T91, cilmi-baarista birta 102, st45.8-111, A106B.
Heerka birta, oo loo soo gaabiyo heerka birta, waa magaca badeecad kasta oo bir ah oo gaar ah. Waa luqad ay dadku wada fahmaan birta. Shiinaha, calaamadda adag waxaa guud ahaan lagu muujiyaa isku darka xarfaha Pinyin ee Shiinaha, calaamadaha curiyaha kiimikada iyo nambarada Carabiga.
Marka xigta, waxaan soo bandhigi doonaa macnaha walxaha iyo calaamadaha ku jira birta daawaha
Labada lambar ee bilowga darajada birta waxay ka dhigan yihiin kaarboonka birta, oo lagu muujiyey dhawr kun oo meelood oo celceliska kaarboonka, sida 40Cr.
Walxaha daawaynta ugu muhiimsan ee birta, marka laga reebo curiyeyaasha microalloyed shakhsi ahaaneed, ayaa guud ahaan lagu muujiyey dhowr boqolkiiba. Marka celceliska nuxurka daawaha uu ka yar yahay 1.5%, heerka birta
Guud ahaan, kaliya astaanta curiyaha ayaa la calaamadeeyay, laakiin waxa ku jira lama calaamadin. Si kastaba ha ahaatee, haddii ay fududahay in lagu jahwareeriyo duruufo gaar ah, lambarka "1" ayaa sidoo kale lagu calaamadeyn karaa calaamadda curiyaha,
Tusaale ahaan, darajooyinka birta "12CrMoV" iyo "12Cr1MoV", waxa ku jira chromium kii hore waa 0.4-0.6%, kan dambena waa 0.9-1.2%, qaybaha kale waa isku mid.
Marka celceliska walxaha alloyku yahay ≥ 1.5%, ≥ 2.5%, ≥ 3.5%
daawaha
Alloy (2 go'yaal)
iwm. Tusaale ahaan, 18Cr2Ni4WA.
Vanadium V, titanium Ti, aluminium Al, boron B, naadirka dhulka RE iyo walxaha kale ee daawaha ee birta ah ayaa iska leh curiyeyaasha microalloyed. Inkasta oo waxa ku jira uu aad u hooseeyo, waa in ay wali ku jiraan darajada birta
Calaamadee. Tusaale ahaan, birta 20mnvb, vanadium waa 0.07-0.12% boronkuna waa 0.001-0.005%.
Birta tayada sare leh waa in lagu calaamadiyaa "a" dhamaadka darajada birta si looga sooco birta tayada sare leh ee guud.
Biraha qaab dhismeedka daawaha ee ujeeddo gaar ah leh, darajada birta waxaa ka horeeya (ama dabac) si ay u matasho astaanta ujeedada birta. Tusaale ahaan, 30CrMnSi bir ah oo loogu talagalay fur-furka,
Heerka birta waxaa lagu tilmaamay ml30crmnsi.
Xirfadlayaasha birta xoogga sare ee daawaynta hooseeya, waa in lagu tilmaamaa dhamaadka darajada birta. Tusaale ahaan, birta 16Mn, birta gaarka ah ee loo isticmaalo buundooyinka waa "16Mnq", uumi
Heerka birta ee gaarka ah ee girder waa "16MnL", iyo darajada birta gaarka ah ee markabka cadaadiska waa "16MnR".
