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440 xaashi bir ah
xaashi bir ah
440 xaashi aan lahayn
440 xaashi bir ah

440 xaashi bir ah

Biraha birta aan lahayni waa biro-daawaha sare leh kuwaaso iska caabbinta daxalka sare leh marka loo eego birta kale sababtoo ah joogitaanka xaddi badan oo chromium ah. Iyada oo ku saleysan qaab dhismeedka crystalline, waxay u qaybsan yihiin saddex nooc sida birta birta ah, austenitic, iyo martensitic. Koox kale oo ka mid ah birta aan-ka-soo-baxa lahayn ayaa ah birta roobka-adag. Waxay isugu jiraan birta martensitic iyo austenitic. Grade 440C birta aan lahayn waa bir aan lahayn kaarboon martensitic sare. Waxay leedahay xoog sare, iska caabin daxalka dhexdhexaad ah, iyo engegan wanaagsan oo xidho iska caabin. Fasalka 440C wuxuu awood u leeyahay inuu gaaro, daaweynta kulaylka ka dib, xoogga ugu sarreeya, qallafsanaanta iyo xirashada caabbinta dhammaan Alloysyada aan nadiifka ahayn. Kaarboonka aadka u sarreeya ayaa mas'uul ka ah sifooyinkan, kaas oo ka dhigaya 440C si gaar ah ugu habboon codsiyada sida kubbadaha iyo qaybaha valve.
Macluumaadka Alaabta

Biraha birta aan lahayni waa biro-daawaha sare leh kuwaaso iska caabbinta daxalka sare leh marka loo eego birta kale sababtoo ah joogitaanka xaddi badan oo chromium ah. Iyada oo ku saleysan qaab dhismeedka crystalline, waxay u qaybsan yihiin saddex nooc sida birta birta ah, austenitic, iyo martensitic. Koox kale oo ka mid ah birta aan-ka-soo-baxa lahayn ayaa ah birta roobka-adag. Waxay yihiin isku-dhafka birta-martensitic iyo austenitic.

Fasalka 440C birta aan lahayn waa bir aan lahayn kaarboon martensitic sare. Waxay leedahay xoog sare, iska caabin daxalka dhexdhexaad ah, iyo engegan wanaagsan oo xidho iska caabin. Fasalka 440C wuxuu awood u leeyahay inuu gaaro, daaweynta kulaylka ka dib, xoogga ugu sarreeya, qallafsanaanta iyo xirashada caabbinta dhammaan Alloysyada aan nadiifka ahayn. Kaarboonka aadka u sarreeya ayaa mas'uul ka ah sifooyinkan, kaas oo ka dhigaya 440C si gaar ah ugu habboon codsiyada sida kubbadaha iyo qaybaha valve.

Faahfaahinta Alaabta

Isku dhafka kiimikaad wuxuu u dhexeeyaa 440C birta aan lahayn

Fasalka440C
Maaddooyinka Min. Max.
Kaarboon 0.95 1.20
Manganese - 1.00
Silikoon - 1.00
Fosfooraska - 0.040
Baaruud - 0.030
Chromium 16.00 18.00
Molybdenum - 0.75
Birta Dheelitiran


Guryaha jireed ee darajada 440 birta aan daahin

Darajo Cufnaanta (kg/m3) Qalabka Elastic (GPa) Dhexdhexaadiyaha Balaadhinta kulaylka (mm/m/C) Habdhaqanka Kulka (W/m.K) Kuleylka Gaarka ah
0-100C (J/kg.K)
Iska caabin koronto (nW.m)
0-100C 0-200C 0-600C at 100C at 500C
440A /B/C 7650 200 10.1 10.3 11.7 24.2 - 460 600


440C Tilmaamaha La Xiriira

USA Jarmalka Japan Australia
ASTM A276-98b 440C
SAE 51440C AISI 440C
UNS S44004
W.Nr 1.4125 X105CrMo17 JIS G4303 SuS 440C AS 2837-1986 440C



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