Hauvprecision peev casting, thermal conductivity ntawm pwm plhaub plays lub luag haujlwm tseem ceeb hauv kev tswj tus cwj pwm solidification thiab qhov kawg casting zoo. Lub plhaub pwm nrog cov thermal conductivity zoo pab hloov cov cua sov kom zoo los ntawm cov hlau molten mus rau ib puag ncig ib puag ncig, ua kom cov cua txias ruaj khov, cov qauv ua kom zoo dua qub, thiab txo qis qhov tsis xws luag. Ua kom tau zoo thermal conductivity yuav tsum muaj kev tswj xyuas thoob plaws hauv cov khoom siv plhaub thiab kev ua tiav.
Kev xaiv cov khoom siv Refractory
Kev ua haujlwm thermal ntawm lub plhaub pwm feem ntau txiav txim siab los ntawm cov khoom siv refractory siv. Cov khoom siv ceramic sib txawv muaj qhov sib txawv ntawm cov thermal conductivity. Fused silica, zircon xuab zeb, thiab alumina-raws li refractories feem ntau siv rau hauv peev casting, txhua qhov muab qhov zoo.
Rau cov ntawv thov uas xav tau kev tswj kom txias, cov khoom siv nrog cov thermal conductivity tsawg yog nyiam los tiv thaiv kev poob siab ntau dhau. Ua tib zoo sib xyaw ua ke ntawm cov xuab zeb refractory nrog cov qib particle qhov ntau thiab tsawg pab tsim kom muaj kev hloov pauv mus tas li thaum tuav lub plhaub kom txaus. Cov khoom zoo heev tuaj yeem ua rau muaj kev rwb thaiv tsev, thaum cov nplej ntau dhau tuaj yeem cuam tshuam qhov zoo ntawm qhov chaw.
Shell Layer Design thiab Structure
Tag nrho cov qauv ntawm lub plhaub pwm muaj qhov cuam tshuam ncaj qha rau kev hloov pauv hluav taws xob. Tus naj npawb ntawm cov khaubncaws sab nraud povtseg, lawv cov tuab, thiab kev faib tawm ntawm lub ntsej muag lub tsho thiab cov khaubncaws sab nraud povtseg yuav tsum tau ua tib zoo tsim.
A dense and uniform face coat ensures accurate reproduction of surface details and good metal-to-shell contact, which is essential for efficient heat transfer. Cov khaubncaws sab nraud povtseg feem ntau yog tsim los nrog cov ntaub ntawv coarser me ntsis los txhim kho cov thermal conduction thiab cov qauv kev ruaj ntseg. Ntau lub plhaub tuab yuav tsum tau zam, vim tias nws tuaj yeem ua rau txo qis cua sov thiab ua rau tsis sib xws.
Tswj ntawm Plhaub Ceev thiab Porosity
Thermal conductivity thiab porosity yog zoo sib xws. Thaum ib theem ntawm porosity yog qhov tsim nyog rau kev khiav tawm ntawm cov pa, qhov porosity ntau dhau tuaj yeem cuam tshuam huab cua thiab txo cov cua sov kom zoo. Tswj slurry viscosity, stucco coverage, thiab txheej uniformity pab ua kom tiav lub plhaub ntom ntom.
Kev cog lus kom zoo thaum lub sij hawm stuccoing txhim kho kev sib cuag ntawm cov khoom siv ceramic, tsim cov kev sib txuas txuas ntxiv hauv lub plhaub. Qhov no tso cai rau cua sov kom ntws zoo dua los ntawm cov hlau molten los ntawm lub plhaub qauv.
Dewaxing, tua, thiab txheej txheem ruaj khov
Dewaxing thiab plhaub tua cov txheej txheem cuam tshuam qhov kawg thermal zog ntawm lub plhaub pwm. Kev tshem tawm ua kom tiav ua kom muaj kev sib cuag ncaj qha ntawm cov hlau molten thiab ceramic nto, txo cov thermal kuj ntawm lub interface.
Plhaub firing ntawm qhov tsim nyog kub tshem tawm cov residual binders thiab ntxiv dag zog rau ceramic bonding, txhim kho thermal conductivity sib xws. Kev tua hluav taws tsis txaus tuaj yeem tso cov khoom pov tseg, thaum kev tua hluav taws ntau dhau tuaj yeem ua rau microcracking, ob qho tib si tsis zoo rau kev hloov hluav taws xob.
Kev cuam tshuam rau Casting Quality
Lub plhaub pwm uas muaj cov thermal conductivity zoo txhawb kev ua kom txias txias, txo qhov kub thiab txias, thiab txo qhov tsis xws luag xws li shrinkage porosity, coarse nplej, thiab kev ntxhov siab sab hauv. Kev hloov hluav taws xob ruaj khov kuj tseem txhim kho qhov tseeb qhov tseeb thiab qhov zoo ntawm qhov chaw, tshwj xeeb tshaj yog rau kev nyuaj lossis tuab -walled castings.
Xaus
Ua kom zoo thermal conductivity ntawm pwm plhaub thaum lub sij hawm casting yuav tsum muaj kev qhia txog kev xaiv cov khoom, lub plhaub qauv tsim, tswj porosity, thiab kev tswj cov txheej txheem meej. Los ntawm kev ua kom zoo rau cov xwm txheej no, cov chaw tsim khoom tuaj yeem ua tiav cov txheej txheem ruaj khov thiab ua tau siab - zoo precision castings uas ua tau raws li cov qauv kev lag luam xav tau.
