Kev ua tau zoo ntawm Dawb Fused Alumina hauv Kev nqis peev Casting
1. Kev nqis peev Casting Plhaub khoom
Dawb fused aluminayog tsim los ntawm fusing high-zoo industrial alumina ntawm kub siab tshaj 2000°C. Nws muaj qhov tshwj xeeb purity (α-Al₂O₃cov ntsiab lus > 99-99.6%) thiab siab refractoriness ntawm 2050°C-2100°C, nrog cov thermal expansion coefficient tsawg (kwv yees li 8×10⁻⁶/°C). Cov khoom no ua rau nws muaj lwm txoj hauv kev rau cov tsoos zircon xuab zeb ua cov khoom siv plhaub tseem ceeb rau kev nqis peev casting. Nws cov particle loj uniformity (grain loj faib> 95%) thiab zoo dispersion pab tsim denser, ntau robust pwm, ho txhim kho casting nto tiav thiab qhov tseeb qhov tseeb thaum txo tus nqi tsis xws luag.
2. Pwm Reinforcement
Nrog rau Mohs hardness ntawm 9.0 thiab zoo heev kub-kub lub zog tuav (tsim kev ncaj ncees saum 1900°C),dawb fused aluminaextends pwm kev pab cuam lub neej los ntawm 30-50%. Thaum siv cov pwm los yog cov cores rau cam khwb cia hlau, cam khwb cia hlau, los yog tsis-ferrous alloys, nws zoo tiv thaiv hlau ntws yaig thiab txo qhov zaus ntawm kev kho thiab tu.
Qhov zoo ntawm Dawb Fused Alumina
(1) Kev kub siab ruaj khov
Dawb fused aluminamuab qhov zoo tshaj plaws thermochemical stability thaum lub sijhawm ua haujlwm casting. Nws thermal expansion coefficient yog kwv yees li ib feem peb ntawm cov khoom siv ib txwm siv, pab tiv thaiv pwm tawg lossis casting deformation vim qhov kub thiab txias hloov. Nws tsis tshua muaj roj evolution (gas tso <3 ml / g) minimizes porosity thiab blowhole defects.
(2) Nto Finishing Zoo
Thaum siv los ua hmoov zoo polishing (grain loj 0.5-45μm),dawb fused aluminaxa cov khoom sib xws, txawm tias puas tuaj yeem ua tiav qhov kev ntxhib los mos ntawm Ra <0.8μm. Nws tus kheej-ntxhiab qhov xwm txheej (tus nqi tawg <5%) ua kom muaj kev ua haujlwm zoo thiab ruaj khov polishing tau.
(3) Txheej txheem Adaptability
Peb muab cov qoob loo kho tau qhov ntau thiab tsawg ntawm F12 txog F10000 kom haum rau ntau yam txheej txheem casting:
Cov qib ntxhib (F12-F100): Rau cov pwm tso tawm hauv cov txheej txheem nyuaj, nce demolding kev vam meej ntau dua 25%.
Cov qib zoo (F220-F1000): Rau kev tsim cov high-precision ceramic cores nrog kev ua kom ntev li nruj raws li±0.1 mm.
3. Txheej txheem optimization tus nqi
(1) Tus nqi siv tau
Hloov zircon xuab zeb nrogdawb fused alumina tuaj yeem txo cov nqi khoom los ntawm 30-40%. Nws kuj tseem ua rau lub plhaub thickness txo los ntawm 15-20% (lub plhaub tuab: 0.8-1.2 mm), shortening lub plhaub-tsev voj voog.
(2) Kev Pabcuam Ib puag ncig
Nrog cov ntsiab lus tsis tshua muaj hlau hnyav (< 0.01%), dawb fused alumina ua tau raws li ISO 14001 ib puag ncig cov qauv. Cov xuab zeb khib nyiab yog 100% recyclable thiab tuaj yeem rov qab siv dua hauv cov khoom siv refractory.
Cov ntawv pov thawj
Cov khoom no tau siv dav hauv high-end teb xws li aerospace turbine hniav thiab cov cuab yeej kho mob precision castings. Cov xwm txheej pom tau hais tias nws tuaj yeem nce cov khoom dhau los ntawm 85% mus rau 97%.