420 420J1 420J2 Kusiyana kwa mbale zachitsulo chosapanga dzimbiri?

Kusiyanitsa pakati pa makhalidwe a chitsulo chosapanga dzimbiri cha 420 420J1 ndi 420J2:

Kusiyana kwakukulu pakati pa chitsulo chosapanga dzimbiri 420J1 ndi 420J2
420J1 ili ndi mphamvu yolimba komanso yolimba, ndipo mtengo wake ndi wotsika kuposa mipira yachitsulo chosapanga dzimbiri. Ndi yoyenera malo ogwirira ntchito omwe amafuna chitsulo chosapanga dzimbiri wamba.

Lamba wachitsulo chosapanga dzimbiri wa 420J2 ndi mtundu wa chitsulo chosapanga dzimbiri chopangidwa motsatira miyezo ya ASTM yaku America; muyezo waku Japan wa SUS420J2, muyezo watsopano wadziko lonse wa 30Cr13, muyezo wakale wadziko lonse wa 3Cr13, khodi ya digito ya S42030, muyezo waku Europe wa 1.4028.

Chitsulo chosapanga dzimbiri cha 420J1: Chikatha kuzimitsidwa, kuuma kwake kumakhala kwakukulu, ndipo kukana dzimbiri kumakhala bwino (maginito). Chikatha kuzimitsidwa, chitsulo chosapanga dzimbiri cha 420J2 chimakhala cholimba kuposa chitsulo cha 420J1 (maginito).

Kawirikawiri, kutentha kwa kuzimitsa kwa 420J1 ndi 980~1050℃. Kulimba kwa kuzimitsa mafuta otenthetsera kwa 980℃ kumakhala kotsika kwambiri kuposa kuzimitsa mafuta otenthetsera kwa 1050℃. Kulimba kwa kuzimitsa mafuta pambuyo pa 980℃ ndi HRC45-50, ndipo kulimba kwa kuzimitsa mafuta pambuyo pa 1050℃ ndi kokwera ndi 2HRC. Komabe, kapangidwe kake kakang'ono komwe kamapezeka pambuyo pa kuzimitsa pa 1050℃ ndi kolimba komanso kofooka. Ndikofunikira kugwiritsa ntchito kutentha ndi kuzimitsa kwa 1000℃ kuti mupange kapangidwe ndi kulimba bwino.

Chitsulo Chosapanga Dzimbiri 420 / 420J1 / 420J2 Mapepala ndi Mbale Magiredi Ofanana:

MUYENERERO JIS WERKSTOFF NR. BS AFNOR SIS UNS AISI
SS 420
 SUS 420 1.4021 420S29 - 2303 S42000 420
SS 420J1 SUS 420J1 1.4021 420S29 Z20C13 2303 S42010 420L
SS 420J2 SUS 420J2 1.4028 420S37 Z20C13 2304 S42010 420M


SS420 / 420J1/ Mapepala a 420J2, Mapepala Opangira Mankhwala (chitsulo chosakanizika):

Giredi C Mn Si P S Cr Ni Mo
SUS 420
 0.15 pasadakhale 1.0 yokwanira 1.0 yokwanira 0.040 pasadakhale 0.030 pasadakhale 12.0-14.0 - -
SUS 420J1 0.16-0.25 1.0 yokwanira 1.0 yokwanira 0.040 pasadakhale 0.030 pasadakhale 12.0-14.0 - -
SUS 420J2 0.26-0.40 1.0 yokwanira 1.0 yokwanira 0.040 pasadakhale 0.030 pasadakhale 12.0-14.0 - -


Mapepala a SS 420 420J1 420J2, Mapepala, Kapangidwe ka makina (chitsulo chosungunuka):

Giredi Mphamvu Yolimba Kwambiri Mphamvu Yopereka (0.2% Offset) Max Kutalika (mu mainchesi awiri)
420 MPa – 650 MPa – 450 10%
420J1 MPa – 640 MPa – 440 20%
420J2 MPa – 740 MPa – 540 12%

Kuuma kwa chitsulo cha 420 series pambuyo pa kutentha ndi pafupifupi HRC52 ~ 55, ndipo magwiridwe antchito osiyanasiyana monga kukana kuwonongeka siabwino kwambiri. Chifukwa chosavuta kudula ndi kupukuta, ndi koyenera kupanga mipeni. Chitsulo chosapanga dzimbiri cha 420 chimatchedwanso "cutting grade" martensitic steel. Chitsulo cha 420 series chili ndi kukana dzimbiri kwabwino chifukwa cha carbon yochepa (carbon common: 0.16 ~ 0.25), kotero ndi chitsulo chabwino kwambiri chopangira zida zodumphira m'madzi.


 

Nthawi yotumizira: Julayi-07-2020