1. Taw qhia rau cov tub ntxhais
Tus tub ntxhais nyob hauvxuab zeb castingyog ib qho kev ywj siab xuab zeb siv los ua cov kab noj hniav tshwj xeeb, qhov lossis cov qauv sib txawv hauv lub cam khwb. Nws yog siv rau hauv kev sib txuas nrog cov xuab zeb hlau sab nraud (casting pwm) los ua kom tiav cov hlau pov tseg, yog li cov hlau ua kua tau txais cov kev cia siab hauv cov solorification. Cov tub ntxhais yog ib qho ntawm cov thev naus laus zis tseem ceeb los daws cov teeb meem ntawm cov qauv nyuaj ua rau txheej txheem casting.
Cov tub ntxhais txoj haujlwm tseem ceeb yog tsim cov kab noj hniav sab hauv, qhov (xws li cov dej tsis pom kev thiab lwm cov qauv uas tsis tuaj yeem tsim los ntawm cov pwm sab nraud. Tsim cov txheej txheem geometric tshwj xeeb kom paub zoo sab hauv cov qauv xws li kev sib txuas cov pas nrig channel thiab cov hniav txias txias. Nyob rau tib lub sijhawm, txo qhov sib txawv hauv phab ntsa tuab ntawm cov casting kom tsis txhob muaj kev tsis taus kub; Coj cov kev coj ua ntawm cov hlau molten thiab txhim kho cov txheej txheem ua tiav.
2. Cov yam ntxwv raug ntawm cov tub ntxhais
Lub zog siab: yuav tsum tiv thaiv qhov cuam tshuam ntawm cov hlau (xws li cov yuam kev hlau (xws li nrum hlau pawv tuaj yeem mus txog {}}. 3mpa) tsis muaj tawg
Cov huab cua muaj zog permeability: tuaj yeem tawm roj ntawm qhov kub (cua permeability ntau dua los yog sib luag rau 100cmgring \/ (cmel ·))
Tom qab nchuav, nws tuaj yeem tawg los ntawm kev co los yog tshuaj lom neeg, uas yooj yim rau cov xuab zeb ntxuav (seem muaj zog<0.5MPa)
Kev thev siab ntawm ntu tseem ceeb yuav tsum tau tswj tsis pub dhau CT8 qib (0. 25mm)
3. Kev tsim qauv txheej txheem ntawm cov tub ntxhais
Moulding tshuab
Cov tub ntxhais tua phom: Siv tus tseem ceeb tua tshuab kom tua cov xuab zeb sib xyaw rau hauv lub thawv loj (ntau lawm ua haujlwm tuaj yeem ncav cuag 120 pwm \/ teev)
Luam tawm 3D: Binder Dav Hlau Tshuab (Binder Jetting) ncaj qha luam tawm cov cores ua ke nrog qhov tseeb ntawm 0. 3 hli
Core corealy catalyzed resin hardens ntawm chav tsev kub, nrog ib qho chaw ua tiav ntawm RA tsawg dua lossis sib npaug ntawm 12.5μm
Kev Ua Haujlwm Tom Qab
Kom qhuav: resin sand cores yuav tsum tau ci ntawm 200-250 degree rau {1}} teev
Txheej: dip-coated zirmon hmoov txheej (tuab {1}}. 5 hli) txhawm rau txhim kho cov kub siab
4, Cores yog dab tsi?
Cov cores yuav ua siv tib lub resin xuab zeb raws li covCasting txheej txheemCov. Cov xuab zeb tau muab tso rau hauv lub thawv tseem ceeb nrog cov duab sab hauv ntawm ntu. Nyob ntawm cov chaw tsim khoom siv thiab cov khoom siv, cov xuab zeb yog hammered, rhuab, lossis tshuab rau hauv lub thawv tseem ceeb. Tus tub ntxhais yog tshem tawm ntawm lub thawv tseem ceeb thiab muab tso rau hauv cov pwm.
Muaj ob txoj hauv kev rau kev ua cores: Cov thawv kub thiab lub thawv tub ntxhais txias. Cov xov xwm kub tseem ceeb yog los ntxiv cov cob rau cov xuab zeb thiab siv cov catalyst. Cov catalyst yog qhib los ntawm cua sov thaum cov tub ntxhais ua tawv tawv. Lub thawv core core core core corsalyst uas tuaj yeem ua kom tsis muaj cua sov, uas tau qhib thaum lub chaw cob thiab xuab zeb harden los ua tus tub ntxhais.
5. Qhov tseem ceeb npaum li cas?
Txij li cov tub ntxhais nyob sab hauv pwm thaum cov hlau molten tau nchuav rau hauv cov pwm, nws txav los yog nce los ntawm txoj haujlwm xaiv. Lub rooj zaum tseem ceeb yog ua los ntawm tib cov hlau uas cov pwm. Cov hlau no tuav cov tub ntxhais nyob rau hauv qhov chaw kom txog thaum cov hlau tau nchuav rau hauv cov pwm. Thaum cov hlau txias, lub rooj zaum uas tau chwv cov hlau molten yuav dhau los ua ib feem ntawm qhov tseeb. Tus tub ntxhais yog ces shaken xoob thiab tshem tawm.
Lwm txoj hauv kev los kho qhov tseem ceeb yog ua kom cov tub ntxhais ntev dua li cov pwm nws tus kheej. Txoj kev no tuaj yeem siv thaum cov chaw uas tsis tuaj yeem sau nrog cov hlau tshaj lub phab ntsa sab nraud ntawm cov pwm. Cov grooves tso rau hauv cov xuab zeb pwm tuaj yeem kho qhov tseem ceeb hauv qhov chaw.
Qaum Technologyyog tus tseem ceeb txhais tau tias ntawm xuab zeb casting kom ua tiav cov qauv hauv kab kab hauv kab kab. Nws cov txheej txheem kev txhim kho tau txuas ntxiv txhawb qhov kev nce qib ntawm kev lag luam casting los ntawm phau ntawv tseem ceeb ua rau ntse 3d luam ntawv. Nyob rau hauv lub neej yav tom ntej, nrog rau qhov tob ntawm bionic qauv tsim (xws li cov ntsiab lus zoo tshaj plaws honeycomb) thiab cov tseem ceeb yuav ua lub luag haujlwm zoo dua qub hauv kev sib xyaw ua ke thiab kev sib koom ua haujlwm.