Lub zog kho tshuab ntawm graphite, tshwj xeeb tshaj yog nws lub zog flexural, kev sib npaug ntawm cov khoom me me, thiab qhov nyuaj, cuam tshuam rau kev ua haujlwm ntawm electrode, nrog rau cov teebmeem tseem ceeb hauv peb yam: kev tswj kev poob, kev ua haujlwm ruaj khov, thiab lub neej ua haujlwm. Kev tshuaj xyuas tshwj xeeb yog raws li nram no:
1. Lub Zog Flexural: Ncaj Qha Txheeb Xyuas Kev Tiv Thaiv Kev Hnav Hluav Taws Xob
Kev Sib Raug Zoo Rov Qab Ntawm Qhov Kev Hnav Thiab Lub Zog Flexural
Qhov kev hnav ntawm cov graphite electrodes txo qis thaum lub zog flexural nce ntxiv. Thaum lub zog flexural tshaj 90 MPa, kev hnav electrode tuaj yeem tswj tau qis dua 1%. Lub zog flexural siab qhia txog cov qauv graphite sab hauv uas tuab dua, ua rau muaj kev tiv taus thermal thiab mechanical stresses thaum lub sijhawm electrical discharge machining (EDM), yog li txo cov khoom tawg lossis tawg. Piv txwv li, hauv EDM, cov graphite electrodes muaj zog siab qhia tau tias muaj kev tiv taus chipping ntau dua ntawm cov chaw tsis muaj zog xws li cov ces kaum ntse thiab ntug, yog li ua rau lub neej ua haujlwm ntev dua.
Kev Ruaj Ntseg Zog Kub Siab
Lub zog khoov ntawm graphite pib nce ntxiv nrog rau qhov kub thiab txias, nce mus txog 2000–2500°C (siab dua 50%–110% dua li qhov kub hauv chav), ua ntej poob qis vim yog kev hloov pauv yas. Qhov cwj pwm no ua rau cov electrodes graphite tswj tau qhov ruaj khov ntawm cov qauv hauv kev smelting kub siab lossis kev ua haujlwm tas mus li, zam kev puas tsuaj ntawm kev ua haujlwm los ntawm kev ua kom mos ntawm thermal.
2. Kev Sib Npaug ntawm Cov Khoom Me Me: Cuam Tshuam rau Kev Ruaj Ntseg ntawm Cov Khoom Me Me thiab Qhov Zoo ntawm Qhov Chaw
Kev Sib Txheeb Ze Ntawm Qhov Loj ntawm Cov Khoom Me Me thiab Kev Hnav
Cov graphite me me uas muaj qhov loj me dua muaj feem cuam tshuam nrog kev hnav electrode qis dua. Kev hnav tseem tsawg heev thaum cov qhov loj me yog ≤5 μm, nce siab tshaj 5 μm, thiab ruaj khov tshaj 15 μm. Cov graphite zoo ua kom muaj kev tawm zoo ib yam thiab zoo dua qhov chaw, ua rau nws tsim nyog rau kev siv tshuab precision xws li pwm cavities.
Kev Cuam Tshuam ntawm Particle Morphology rau Machining Accuracy
Cov qauv khoom me me thiab ntom ntom uas sib xws txo qhov kub hnyiab thaum lub sijhawm ua haujlwm, tiv thaiv cov qhov tsis sib xws ntawm qhov chaw electrode thiab txo cov nqi polishing tom qab. Piv txwv li, hauv kev lag luam semiconductor, cov electrodes graphite uas muaj cov khoom huv si thiab zoo yog siv dav hauv cov cub tawg siv lead ua, qhov twg lawv qhov sib xws ncaj qha txiav txim siab qhov zoo ntawm cov siv lead ua.
3. Qhov Nyuaj: Kev Sib Npaug ntawm Kev Ua Haujlwm Zoo thiab Kev Hnav Cuab Yeej
Kev Sib Txheeb Tsis Zoo Ntawm Qhov Hardness thiab Electrode Wear
Qhov nyuaj ntawm graphite siab dua (Mohs hardness scale 5–6) txo qhov hnav ntawm electrode. Graphite tawv tiv taus qhov tawg me me thaum txiav, txo qhov tawg ntawm cov khoom siv. Txawm li cas los xij, qhov nyuaj ntau dhau yuav ua rau cov cuab yeej hnav sai dua, ua rau cov khoom siv cuab yeej zoo dua (piv txwv li, pob zeb diamond polycrystalline) lossis cov kev ntsuas txiav (piv txwv li, qhov ceev tig qis, qhov nrawm pub siab) kom sib npaug kev ua haujlwm zoo thiab tus nqi.
Cov Nyhuv ntawm Qhov Hardness rau Machined Surface Roughness
Cov electrodes graphite tawv ua rau cov nplaim du thaum lub sijhawm ua haujlwm, txo qhov xav tau kev sib tsoo tom qab. Piv txwv li, hauv EDM ntawm cov hniav cav aerospace, cov electrodes graphite tawv ua tiav qhov roughness ntawm Ra ≤ 0.8 μm, ua tau raws li qhov yuav tsum tau ua kom raug.
4. Kev Cuam Tshuam Ua Ke: Kev Txhim Kho Kom Zoo Dua ntawm Lub Zog Mechanical thiab Electrode Performance
Cov txiaj ntsig ntawm Cov Hluav Taws Xob Graphite Muaj Zog Siab
- Kev Siv Tshuab Uas Tsis Ruaj: Cov graphite muaj zog flexural siab tiv taus cov dej ntws siab thiab cov nqi pub, ua rau tshem tawm cov hlau tau zoo (piv txwv li, kev siv tshuab ua pwm tsheb tsis ruaj).
- Kev Siv Tshuab Ua Duab Sib Txawv: Cov qauv sib xws thiab qhov nyuaj siab ua rau muaj cov ntu nyias, cov ces kaum ntse, thiab lwm yam geometries sib txawv yam tsis muaj kev hloov pauv thaum lub sijhawm siv tshuab.
- Ib puag ncig kub siab: Hauv hluav taws xob arc cub tawg smelting, qhov twg electrodes nyiaj dhau 2000 ° C, lawv lub zog ruaj khov cuam tshuam ncaj qha rau kev ua haujlwm smelting thiab kev nyab xeeb.
Cov Kev Txwv ntawm Kev Tsis Muaj Zog Mechanical
- Kev tawg ntawm cov ces kaum ntse: Cov electrodes graphite uas tsis muaj zog yuav tsum tau siv cov tswv yim "txiav lub teeb, ceev ceev" thaum lub sijhawm ua haujlwm raug, ua rau lub sijhawm ua tiav thiab cov nqi nce ntxiv.
- Kev Pheej Hmoo ntawm Arc Burn: Lub zog tsis txaus yuav ua rau muaj kev kub hnyiab ntawm qhov chaw electrode, ua rau muaj arc tawm thiab ua rau puas tsuaj rau qhov zoo ntawm qhov chaw ua haujlwm.
Xaus Lus: Lub Zog Kho Tshuab Ua Ib Qho Qhia Txog Kev Ua Tau Zoo
Lub zog ntawm graphite—los ntawm cov yam ntxwv xws li lub zog flexural, kev sib npaug ntawm cov khoom me me, thiab qhov nyuaj—muaj feem cuam tshuam ncaj qha rau qhov ceev ntawm electrode hnav, kev ua haujlwm ruaj khov, thiab lub neej ua haujlwm. Hauv kev siv ua haujlwm, cov ntaub ntawv graphite yuav tsum tau xaiv raws li cov xwm txheej machining (piv txwv li, qhov yuav tsum tau ua kom raug, qhov loj tam sim no, qhov kub thiab txias):
- Kev siv tshuab ua kom raug: Xaiv cov graphite zoo uas muaj zog flexural >90 MPa thiab cov khoom me me ≤5 μm.
- Kev siv tshuab ua kom muaj zog tam sim no siab: Xaiv cov graphite uas muaj zog flexural nruab nrab tab sis cov khoom loj dua kom sib npaug qhov hnav thiab tus nqi.
- Qhov chaw kub siab: Ua tib zoo saib xyuas qhov ruaj khov ntawm graphite ntawm 2000–2500 ° C kom tiv thaiv kev ua haujlwm poob qis los ntawm kev ua kom mos.
Los ntawm kev tsim cov khoom siv thiab kev ua kom zoo dua qub, cov khoom siv kho tshuab ntawm graphite electrodes tuaj yeem txhim kho ntxiv kom ua tau raws li qhov xav tau ntawm kev ua haujlwm siab, kev raug, thiab kev ruaj khov hauv cov chaw tsim khoom siab heev.
Lub sijhawm tshaj tawm: Lub Xya Hli-10-2025