Feem ntau, qhov loj me ntawm qhov tseeb ntawm kev nrum kev cuam tshuam yog cuam tshuam los ntawm ntau yam xws li cov qauv casting, cov khoom siv casting, pwm tsim, plhaub ua, ci, ncuav, thiab lwm yam.
Qhov chaw tsis tsim nyog lossis kev ua haujlwm ntawm ib qho txuas twg yuav ua rau muaj kev hloov pauv ntawm lub shrinkage tus nqi ntawm qhov kev xaiv, uas ua rau muaj qhov sib txawv los ntawm qhov muaj peev xwm qhov ntev ntawm cov kev cuam tshuam. Cov hauv qab no yog cov xwm txheej uas yuav ua rau muaj qhov tsis xws luag hauv qhov loj me ntawm qhov tseeb kev nplai lub suab:
(1) Cov cawv ntawm cov qauv nrum: a. Phab ntsa casting yog tuab thiab qhov shrinkage loj, thiab cov phab ntsa casting yog nyias thiab cov shrinkage tsawg. b. Tus qauv pub dawb shrinkage yog loj, thiab tus nqi txiav tsis sib xws yog me me.
(2) Cuam tshuam los ntawm cov khoom siv cuam tshuam: a. Cov pa roj carbon ntau nyob rau hauv cov khoom siv, qhov me dua qhov linear shrinkage rate, thiab qis dua cov ntsiab lus carbon, ntau dua qhov linear shrinkage rate. b. Tus casting shrinkage tus nqi ntawm cov khoom siv sib xws yog li hauv qab no: casting shrinkage tus nqi K=(LM-LJ) / LJ × 100%, LM yog qhov loj ntawm cov kab noj hniav, thiab LJ yog qhov loj dua casting. K muaj kev cuam tshuam los ntawm cov hauv qab no: ciab pwm K1, casting qauv K2, alloy hom K3, nchuav kub K4.
(3) Cov cawv ntawm pwm ua rau ntawm txoj kab ntsws txo tus nqi ntawm cov nruas: a. Cov cawv ntawm ciab txhaj tshuaj tiv thaiv kub, siv quav ciab txhaj tshuaj siab, thiab siab tuav lub sijhawm ntawm qhov peev txheej yog qhov pom tseeb tshaj plaws nyob rau hauv qhov kev txhaj tshuaj ciab kub, tom qab ntawd siv quav ciab txhaj tshuaj siab, thiab lub siab tuav lub sijhawm tau lav tom qab kev tsim peev, nws muaj tsawg qhov cuam tshuam rau qhov kawg loj ntawm kev nqis peev.
b. Cov kab kev txo tus nqi ntawm cov ciab (pwm) cov khoom yog kwv yees li 0.9-1.1%.
c. Thaum lub pwm kev nqis peev tau khaws cia, yuav muaj ntxiv cov shrinkage, thiab nws cov nqi shrinkage yog kwv yees li 10% ntawm tag nrho cov shrinkage, tab sis thaum khaws cia rau 12 teev, qhov peev txheej pwm loj yog qhov ruaj khov.
d. Qhov ntsuas radial shrinkage ntawm lub ciab pwm tsuas yog 30-40% ntawm qhov ntev thev naus laus zis tus nqi. Qhov kub txhaj tshuaj ciab muaj qhov cuam tshuam loj dua rau qhov kev txiav tawm dawb tshaj li qhov cuam tshuam nrog kev txo qis (qhov zoo tshaj plaws siv quav ciab kub yog 57-59 ℃, qhov ntsuas kub ntau dua, ntau dua qhov shrinkage).
(4) Cov kev cuam tshuam los ntawm plhaub-ua cov ntaub ntawv: zircon xuab zeb, zircon hmoov, Shangdian xuab zeb thiab Shangdian hmoov yog siv. Vim tias lawv cov coe nthuav me me, tsuas yog 4.6 × 10-6 / /, lawv tuaj yeem tsis quav ntsej.
(5) Qhov cuam tshuam ntawm lub plhaub ci: Vim tias nthuav dav qhov sib npaug ntawm lub plhaub yog me me, thaum lub plhaub txias yog 1150 ℃, nws tsuas yog 0.053%, yog li nws tuaj yeem tsis quav ntsej.
(6) Qhov cuam tshuam ntawm casting kub: qhov kub siab dua qhov casting, qhov ntau dua qhov shrinkage, thiab qis dua qhov kub casting, qhov tsawg dua qhov shrinkage, yog li cov casting kub yuav tsum tsim nyog.
Ningbo QS Machinery Inc
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