Yuav ua li cas tswj tau tus txheej carburized qhov tob thaum lub sijhawm carburizing ntawm dc06?
Thaum Carburizing DC06, feem ntau txhais qhov tob (feem ntau txhais tau tias qhov deb ntawm cov ntsiab lus carbon nyob rau hauv cov peev txheej carbon nyob rau hauv kev sib koom tes los ntawm kev tswj hwm ntawm cov txheej txheem tsis txheeb. Tus tseem ceeb yog txhawm rau ua kom cov teeb meem tseem ceeb raws li kev sib txawv ntawm cov pa roj carbon oms hauv dc06 (C tsawg dua lossis sib npaug nrog 0.008%). Cov hauv qab no yog cov kev tswj hwm tshwj xeeb thiab cov ntsiab lus tseem ceeb:
I. Cov ntsiab lus cuam tshuam thiab tswj kev txhawb nqa
Lub carburized txheej qhov tob yog qhov tseem ceeb qhov tob ntawm cov roj ntsha atoms ntawm cov kev cai kub siab, uas ua raws fick txoj cai diffusatures thiab yog feem ntau ntawm peb qhov kev txwv. Kev tswj cov logic yog raws li hauv qab no:
Carburizing kub
Qhov siab dua qhov kub thiab txias, ntau dua cov pa roj atomic diffusion coeffusent (lub diffusion tus nqi nce exponentially). Lub carburizing kub rau DC06 yog feem ntau tswj tau ntawm 880 thiab 930 Qib (xav tau los saum tus txheej txheem kub ntawm 727℃kom ntseeg tau cov pa roj).
Txoj cai dav dav: rau txhua 10℃nce hauv qhov kub thiab txias, lub diffusion tus nqi nce los ntawm kwv yees li 25-30%. Piv txwv li, qhov tob ntawm carburizing ntawm 930℃rau 2 teev yog sib npaug rau cov txiaj ntsig ntawm carburizing ntawm 880℃rau 3-4 teev.
Lub sijhawm carburizing
Ntawm tib qhov kub, qhov tob ntawm cov txheej carburized yog sib xws rau cov square hauv paus ntawm lub sijhawm (
δ ∝
t
).
Txoj cai dav dav yog tias thaum lub sijhawm nce, qhov tob nce ntxiv, tsis muaj kev nce qib ntxiv rau lub sijhawm, uas nce kev siv hluav taws xob thiab cov nplej zom). Piv txwv li, lub hom phiaj tob ntawm 0.3mm yuav tsum tau 2-3 teev, thaum lub hom phiaj tob ntawm 0.5mm yuav tsum tau 5-6 teev (ntawm 900 degree).
Carburizing nruab nrab carbon muaj peev xwm
Cov pa roj carbon muaj peev xwm (carbon cov peev txheej hauv cov khoom siv hluav taws xob) txiav txim siab cov ntsiab lus carbon ntau (qhov sib txawv ntawm cov pa roj carbon monoxide (qhov sib txawv ntawm cov pa roj carbon monoxide) Rau DC06 carburizing, cov pa roj carbon mon yuav tsum tau tswj hwm ntawm 0.8% thiab 1.2% c (cov pa roj carbon monoxans nrawm tuaj yeem ua rau muaj cov dej num los ntawm kev kub siab). Ii. Txheej txheem staged tswj txoj kev
Txhawm rau kom tswj tau qhov tob thiab zam kev tsis xws luag, DC06 carburizing feem ntau siv tau ob {{}}} pakburizus + diffusion ":
Lub zog carburizing carburizing (nchia sai)
Lub Hom Phiaj: Tau sai sai tsim kom muaj cov roj av siab kom muaj kev tsav tsheb rau kev sib sib zog nqus.
Cov tsis muaj: qhov ntsuas kub: Qhov ntsuas kub 900-930 degree, carbon muaj peev xwm 1.0-1.2% C, thiab sijhawm ntev.
Piv txwv li, rau lub hom phiaj tob ntawm 0.4mm, 3 teev ntawm kev mob ntsws (920 degree) tuaj yeem tsim cov txheej txheem ua ntej carburized kwv yees li 0.3mm tuab.
Diffusion theem (uniform tob)
Lub Hom Phiaj: Txo cov nqaij thaj av ntau (zam cov carbides), kom cov roj carburized client hauv cov txheej carburized, thiab xyuas kom meej lub hom phiaj tau ntsib.
Cov tsis muaj zog: kev kub ntxhov rau kev nkag siab ntsws (lossis qis dua), carbon muaj peev xwm 0.8-0.9% c, thiab sijhawm 30-40% ntawm tag nrho cov voj voog carburizing. Piv txwv li, rau cov hom phiaj 0.4mm, lub sijhawm 1.5-teev) tuaj yeem ua tiav qhov kawg ntawm 0.4.45mm, nrog rau cov pa roj carbon monoxide.
III. Kev Tswj Tswj Tswj Tswj Tswj Xyuas
Pre -} Lub tshuab nqus tsev thiab tswj huab cua
Ua ntej carburizing, khiav tawm ntawm cov cub tawg (tsawg dua los yog sib npaug xws li oxygen, tiv thaiv cov oxygen, tiv thaiv cov oxidation ntawm DC06 (uas cuam tshuam cov pa roj carbon).
Thaum qhia cov carburizing nruab nrab (xws li cua sib xyaw ua ke lossis tswj cov pa roj carbon, thiab tswj cov pa roj carbon, thiab tswj cov pa oxygen tseem nyob hauv cov teeb tsa tus nqi ± 0.05% C.
Txhim Kho Kom Qhuav Chaw Nres
DC06 nplooj ntawv / seem yuav tsum tau muab sib txuas kom zoo kom tsis txhob muaj kev sib tw. Ua kom ntseeg tau cov cua tshuab hluav taws xob (tshwj xeeb hauv qhov muag dig muag (tshwj xeeb hauv qhov chaw uas tsis pom kev) Txhawm rau tiv thaiv cov txheej txheem carburized los yog sib sib zog nqus dhau. Rau nyias dc06 (tsawg dua los yog sib npaug rau 1mm), dai cov cua sov chaw thau khoom kom txo tau cov ntsiab lus "duab ntxoov ntxoo tsis txaus) ntawm cov ntsiab lus sib tiv thaiv.
Test Thaiv calibration
Rau txhua txhua qhov ntau lawm blocks, kuaj cov khoom ntawm tib cov khoom thiab cov tuab tuab raws li DC06 tau muab tso rau hauv cov cub tawg. Tom qab carburizing, lub carburized txheej qhov tob yog ncaj qha ntsuas siv cov ntawv me me (sib tsoo ntawm cov ntoo khaub lig ntu thiab etching). Tom qab sib piv nrog cov nqi hom phiaj, tsis muaj rau tom ntej no yog nplua (yog hais tias qhov tob yog ntiav heev, lub sijhawm txuas ntxiv los ntawm 10-15%).