Cov Carbon & Alloy rau CNC Machining Cov Khoom Siv
Table of Contents
ToggleCov Hlau Carbon: Cov Khoom, Qib, thiab CNC Machinability
Cov Hlau Alloy: Cov Khoom Txhim Kho Rau Cov Ntawv Thov CNC Uas Xav Tau Ntau
Kev Sib Piv ntawm Carbon thiab Alloy Steel hauv CNC Machining
Thaum xaiv cov hlau carbon thiab hlau alloy rau CNC machining, muaj ntau yam tseem ceeb uas yuav tsum tau xav txog. Cov hlau carbon zoo tshaj plaws hauv tus nqi thiab yooj yim ntawm kev ua haujlwm, nrog cov qib carbon qis muab kev sib txuas zoo dua thiab kev ua tau zoo. Txawm li cas los xij, nws tsis muaj kev xeb thiab kev tiv taus kub siab, ua rau nws tsis haum rau cov chaw ib puag ncig hnyav.
Khoom | Cov Hlau Carbon (piv txwv li, 1045) | Cov Hlau Sib Xyaws (piv txwv li, 4140) |
|---|---|---|
Yield zog (MPa) | 415-570 | 655-860 |
Kev Siv Siab | Siab (70-100) | Nruab nrab (50-70) |
Corrosion Resistance | Tsawg | Nruab nrab mus rau Siab |
nqi | Tsawg-Nruab Nrab | Nruab Nrab-Siab |
daim ntawv sau npe | Kev tsim kho dav dav | Kev ntxhov siab heev, corrosive |
Qhov Txawv Tseem Ceeb Ntawm Cov Hlau Carbon Thiab Cov Hlau Alloy Hauv CNC Machining
1. Qhov sib txawv ntawm cov khoom tseem ceeb
Qhov sib txawv tseem ceeb yog nyob rau hauv cov tshuaj lom neeg sib xyaw. Cov Hlau Carbon yog hlau-raws li, muaj 0.0218% ~ 2.11% carbon ua lub ntsiab lus tseem ceeb nrog cov ntsiab lus tsis huv qis. Nws yog cais los ntawm cov ntsiab lus carbon: cov hlau qis-carbon (<0.25%, piv txwv li, Q235) yog mos thiab yas; cov hlau nruab nrab-carbon (0.25% ~ 0.6%, piv txwv li, 45 # hlau) sib npaug lub zog thiab plasticity; cov hlau carbon siab (> 0.6%, piv txwv li, T10) yog nyuaj tab sis brittle.
Cov hlau sib xyaw yog tsim los ntawm kev ntxiv cov khoom sib xyaw ua ke (chromium, nickel, thiab lwm yam, tag nrho cov ntsiab lus 1% ~ kaum feem pua) rau cov hlau carbon, xws li 42CrMo rau kev txhim kho lub zog thiab 304 stainless hlau rau kev tiv thaiv corrosion, uas hloov pauv nws cov kev ua haujlwm machining.
2. CNC Txiav Kev Ua Haujlwm Qhov Sib Txawv
Kev tiv thaiv txiav: Cov hlau carbon qhov kev tiv thaiv nyob ntawm cov pa roj carbon uas muaj - cov hlau uas muaj carbon tsawg tso cai rau kev txiav ceev ceev, cov pa roj carbon nruab nrab yog qhov tsim nyog, thiab cov pa roj carbon siab xav tau kev ceev qis dua. Cov hlau alloy qhov kev tiv thaiv txiav yog 20% ~ 50% siab dua li cov hlau carbon tib yam vim yog cov carbides tawv los ntawm cov khoom sib xyaw.
Kev Tshem Tawm Kub: Cov hlau carbon muaj cov thermal conductivity zoo, ua rau qhov kub ntawm kev ua haujlwm qis thiab cov cuab yeej hnav qeeb. Cov hlau alloy tshem tawm cua sov tsis zoo, nrog rau qhov kub ntawm ntug feem ntau tshaj 800 ℃ (piv txwv li, 304 stainless hlau), xav tau kev txias siab kom tiv thaiv kev puas tsuaj rau cov cuab yeej thiab kev hlawv ntawm cov khoom ua haujlwm.
3. Cov Qauv Xaiv Cov Cuab Yeej
Cov hlau carbon: Cov kev xav tau qis—HSS lossis cemented carbide rau cov hlau qis/nruab nrab-carbon; high-cobalt cemented carbide (piv txwv li, YG8) rau cov hlau carbon siab. Cov cuab yeej tsis coated lossis TiCN-coated siv, nrog cov npoo ntse (<0.1mm) rau cov hlau qis-carbon thiab cov npoo honed (0.1~0.2mm) rau cov hlau nruab nrab/siab-carbon.
Cov hlau sib xyaw: Cov kev xav tau siab - TiAlN / CrN txheej, cov npoo honed txhim kho (0.2 ~ 0.5 hli), thiab cov khoom siv cuab yeej ua haujlwm siab kom tiv taus qhov kub thiab txias siab thiab kev cuam tshuam.
4. Cov Xwm Txheej Thov thiab Cov Lus Qhia Xaiv
Cov hlau uas tsis muaj carbon ntau (10#, Q235): Haum rau cov ntsia hlau, cov casings—tus nqi qis, ua haujlwm tau zoo.
Cov hlau carbon nruab nrab (45 #): Zoo tagnrho rau cov iav, cov ncej - kev ua tau zoo sib npaug, qhov zoo tshaj plaws
cov ntaub ntawv siv hauv kev cob qhia.
Cov hlau uas muaj cov pa roj carbon ntau (T8, T10): Siv rau cov cuab yeej, pwm—xav tau qeeb qeeb thiab txias heev.
Cov hlau sib xyaw (42CrMo, 304): Haum rau cov crankshafts tsheb, cov khoom siv dav hlau - ua tau raws li cov kev cai ua haujlwm nruj txawm tias tus nqi siab.
6. Ntsiab lus
Qhov sib txawv ntawm kev ua haujlwm ntawm ob lub hlau no yog los ntawm qhov sib txawv ntawm cov khoom sib xyaw. Kev ua kom tau qhov sib txawv no tuaj yeem txo qhov hnav ntawm cov cuab yeej ntau dua 30% thiab txhim kho kev ua haujlwm tau zoo dua 20%. Kev tsim kom muaj cov ntaub ntawv "khoom siv-cuab yeej-txheej txheem" pab ua kom muaj qhov sib npaug zoo tshaj plaws ntawm tus nqi thiab kev ua haujlwm tau zoo hauv kev ua haujlwm CNC siab.