Pft, shenzhen
Lub hom phiaj: cia siab qhov sib txawv ntawm carbide thiab ceramic nqig thaum ua tiav thaum ua tiav {- pa coolant siab (7 mpa).
Txoj kev: ib qho -} -}}} {-0.20 hli / r). Tool Lub neej kawg -}} nm flank hnav los yog kev puas tsuaj loj. Lub zog, nplaim roughness (ra) thiab dawb - txheej qhov tob tau nkag mus.
Cov txiaj ntsig tau: ntawm VC 80 m / min, Whisker {{}} × × × Cov khoom siv ntawm coated carbide (GC1115) uas tau siv 11 min. Carbide tsim RA 0.42 μ6 μ8 μm rau Ceramic. Dawb - txheej qhov tob nyob hauv qab no 5 μm rau ob qho tib si.
Qhov Kawg: Ceramics Triple Mrr thaum ceev tshaj lossis sib npaug rau 80 m / min thiab nto ra tsawg dua los yog sib npaug rau 0.8 μm yog txais tau; Carbide tseem nyab xeeb rau Ra <0.5 μm lossis cuam tshuam.
Carbide ntxig vs tej hub ntxig rau Superalloy Turbine Tuaj
Nickel -} Raws supartalloy tuaj yeem tawm ntawm lub ntsej muag ntawm 46 hrc thiab noj cov cuab yeej siv rau noj tshais. Cov khw feem ntau xaiv nruab nrab ntawm ultra- tawv carbide thiab blazing {{} Cov khoom seem yooj yim Daim ntawv no muab cov lej no -} Tsis muaj kev lag luam fluff.
2 Tshawb Fawb Txoj Kev
2.1 workpiece & tshuab
Alloy: Inconel 718, 46 hrc, ø 85 hli bar, 250 hli overhang.
Tshuab dhos: DMG CTX Beta 800, 12 KW, 7 MPa los ntawm {{tool txias dua.
2.2 Cov cuab yeej txiav
| Chaw ua uas tsis tau haus | Carbide | Iav dawb |
|---|---|---|
| Ntim | Cnmg 120408-SF GC1115 | Rngn 120400 whisker -} siv al₂o₃ |
| Daim plhaub | Tialn pvd | Tsis muaj |
| Sua sua kaum | -6 Qib | -15 degree |
| Ntug Npaj | 25 μm hone | 10 μm Chamfer |
2.3 cov txheej txheem
Ob kis dhau ib bar: ntxhib rau 1 hli Tshuag, tiav rau qhov kawg 0.2 mm qhov tob.
Factorial Matrix: VC 40, 60, 80, 100, 120 m / min × fn 0..15, 0.15, 0.20 hli / r.
Nres cov txheej txheem: Flank hnav vb=0.3 mm lossis ntug pob txha lov.
Kev Ntsuas: Dynamometer (Kistler 9129A) Rau Lub Hwj Chim, Laser Profilometer (Laser Prodilometer (X}} ray}} {}} i}}}}}}}}}}}}}}} i} {} {} {}}}} i} {} {} {}}} i}}} xob ci diffraction rau txheej dawb.
3 tau txais & tsom xam
3.1 Cov Cuab Yeej
Daim duab 1 Pom cov cuab yeej ua haujlwm ntawm VC. Carbide ua raws li ib qho classic nqes hav (n=0.24) poob ntawm 24 m / min mus rau 5 min ntawm 120 m / min. Ceramics Spkitt thaum 0.7-2.1 min saum toj no 80 m / min vim yog thermal tawg.
3.2 Cov Khoom Siv Tshem Tawm (MRR)
Cov lus 1 sib piv MRR nyob tib lub cuab tam - lub neej xaus -.
| VC (M / min) | MRR carbide (cmlin / min) | MRR ceramic (cmy / min) | Feem tsawg |
|---|---|---|---|
| 60 | 1.8 | 4.2 | 2.3 |
| 80 | 2.4 | 11.5 | 4.8 |
| 100 | 3.0 | 14.1 | 4.7 |
3.3 Kev Ntseeg Ntsej Dawb
RA (μm): Carbide 0.42 ± 0.05; Ceramic 0.78 ± 0.12.
Dawb - txheej Qhov tob: <5 μm rau ob qho tib si; Tsis muaj ib micro micro- Hardness sawv.
Residual kev ntxhov siab: carbide nplooj 120 mpa compressive, ceramic 180 MPa tensile {}} tseem tsis pub dhau OEM txwv.
3.4 Lub Hwjchim Draw
Carbide qhov nruab nrab 2.1 kw; Ceramic peaked ntawm 3.8 kW, nyob rau hauv spindle cia.
4 kev sib tham
4.1 Cov Hluav Taws Xob
Carbide ua tsis tau tejyam los ntawm flank hnav ntxiv micro -} chipping, zoo ib yam nrog Sandvik Cov Ntawv Tshaj Tawm. Ceramics succumbed rau thermal poob siab tawg tawm propagating los ntawm chamfer, ua kom nrawm los ntawm txias.
4.2 Kev Lag Luam Hla - dua
Siv khw {{0 {{}}}} tus nqi hauv pem teb (ntxiag}} MEDNE} Txawm li cas los xij MRR outweighs nws 2 × mreat.
4.3 Qhov Txwv
Kev txiav txuas tas mus li xwb; Kev cuam tshuam cov txiav Shaltered Ceramics hauv kev sim sim.
Coolant siab> 8 MPA txo lub neej muaj tej hub los ntawm 30%.
4.4 Cov tswv yim nqa khoom
Xaiv cov ceramic thaum (a) RA 0.8 μm yog tau, (b) ntxaiv tuaj yeem xa ntau dua lossis sib npaug rau 100 m / min, (c) txiav txuas ntxiv. Lo rau carbide rau kev ua si Airfoil kawg lossis ib qho chaw / lub xub pwg.
5 lub ntsiab lus
Kev ntsuas cov khoom siv triple triple tshem tawm cov nqi hauv inconel 718 tshaj li ntawm lub rooj sib tham dawb- Txoj kev sib ntsib ntawm cov roj ntsha rau RA <0.5 μm lossis cuam tshuam rau geometry. Rov ua dua lub txiaj ntsig ntawm koj lub siab txias kom paub meej tias qhov kev hla hla ua ntej rov {}} hais txoj haujlwm.