Pib nrog Cov Khoom Siv, Tsis yog Cov Cuab Yeej
Stainless hlau ua haujlwm- tawv hauv 0.1 s; txhua qhov kev txiav tom ntej yuav tsum nkag mus rau txheej txheej hardened yav dhau los.
Lub hom phiaj: nyob qis dua qhov ua haujlwm- hardening pib los ntawm shearing, tsis rub.
Ntxig Qib & Txheej
Substrate: tawv, sub-micron grain carbide (6–10% Co) los tiv thaiv thermal cycling.
Txheej: multi- txheej PVD AlTiN + TiSiN (3–4 µm) rau 900℃barrier; ntxiv Si rau nano- txheej toughness.
Rau 17-4 PH Ntau dua lossis sib npaug rau 38 HRC: hloov mus rau CBN lossis ceramic (Sialon) ntawm qis dua.
Macro-Geometry
Qhov zoo rake 8-12℃kom txo tau txiav quab yuam 15-25%.
Sharp hone Tsawg dua lossis sib npaug li 0.02 hli; loj dua hone nce rub thiab dawb- txheej tob.
Chip-breaker zawj matched rau pub (f=0.08–0.20 mm/rev) rau luv luv, curled chips.
Toolholder & Teeb
Hydraulic lossis shrink - haum rau <3 µm khiav- tawm; txhua 10 µm khiav- tawm kev txiav cov cuab yeej lub neej hauv ib nrab.
Shortest gauge length Tsawg dua los yog sib npaug li 4 × D los thawb chatter saum toj no 8 kHz- sab nraum lub tshuab modal ntau yam.
Pom zoo txiav cov ntaub ntawv (dej los yog 7 MPa HP coolant)
表格
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| Qib | Kev ua haujlwm | Vc (m / min) | f (mm / rov) | ap (mm) | Tool Lub Neej Lub Hom Phiaj |
|---|---|---|---|---|---|
| 303 | Rough | 120–150 | 0.15–0.25 | 1–2 | 20 feeb |
| 303 | Ua kom tiav | 150–180 | 0.05–0.10 | 0.1–0.3 | 30 feeb |
| 304/316L | Rough | 80–120 | 0.12–0.20 | 1–2 | 15 feeb |
| 304/316L | Ua kom tiav | 120–150 | 0.05–0.08 | 0.05–0.2 | 25 feeb |
| 17-4 PHN | Rough | 60–80 | 0.10–0.15 | 0.5–1.5 | 10 feeb |
| 17-4 PHN | Ua kom tiav | 100–120* | 0.03–0.06 | 0.02–0.1 | 15 feeb |
| * CBN lossis ceramic ntawm 150-200 m / min rau kev txiav txuas ntxiv. |
Pub-rau- Ntug Txoj Cai
Pub yuav tsum loj dua los yog sib npaug rau hone radius; txwv tsis pub cov cuab yeej rubs: f Ntau dua lossis sib npaug rau rε × 0.5.
Rau 0.04 mm hone, qhov tsawg kawg nkaus pub 0.02 mm/rev- siv qhov no raws li qhov kev txwv qis dua.
Qhov tob- ntawm -Txoj Kev Txiav Txim
Rough: ap Ntau dua los yog sib npaug li 0.2 hli kom nkag mus rau cov tawv nqaij tawv sab laug los ntawm kev txiav yav dhau los.
Semi-finish: 0.1 hli; tag: 0.02-0.05 hli kom txiav quab yuam <200 N thiab tsis txhob muaj qhov deflection ntawm cov phab ntsa nyias.
Coolant xa khoom
Lub hom phiaj 7 MPa, 30 l / min los ntawm - cuab yeej; txo qhov kub ntawm ntug 150℃thiab ncua lub neej 30%.
Cov ntsiab lus chloride <60 ppm los tiv thaiv pitting thaum lub sij hawm khiav ntev; pH 8.5-9.2.
Cov cuab yeej -Kev Saib Xyuas Lub Neej
Siv spindle zog nkhaus: ± 5% nce taw qhia ntug degradation; hloov qhov ntxig ua ntej nto tag jumps> 0.2 µm Ra.
Hauv -xov tooj cua- ntsuas lossis laser: qhov dav dav> 6 µm yog lwm qhov kev hnav khaub ncaws zoo.
Tus nqi -ib - Ntug xam
Piv txwv li: coated carbide insert (ob -sided, 4 edges) tus nqi USD 6.50; xav tau 20 min lub neej ntawm Vc 100 m / min ntawm 304.
Ib ntug tshuab 1.25 m qhov ntev → nqi=USD 6.50 / 4 / 1.25=USD 1.30 ib meter, sib tw nrog re- grind.
