Graphite yog cov khoom siv uas tsis yog xim hlau, xim dub, nrog rau qhov kub thiab txias tsis kam, zoo hluav taws xob thiab thermal conductivity, zoo lubrication thiab ruaj khov yam ntxwv;zoo hluav taws xob conductivity, yuav siv tau raws li ib tug electrode nyob rau hauv EDM.Piv nrog rau cov tsoos tooj liab electrodes, graphite muaj ntau yam zoo xws li kub tsis kam, tsis muaj paug noj, thiab thermal deformation me me.Nws qhia tau hais tias adaptability zoo dua nyob rau hauv kev ua ntawm precision thiab complex qhov chaw thiab loj-loj electrodes.Nws tau maj mam hloov tooj liab electrodes li hluav taws xob sparks.Lub ntsiab ntawm machining electrodes [1]Tsis tas li ntawd, graphite hnav-resistant cov ntaub ntawv yuav siv tau nyob rau hauv high-speed, high-temperature, thiab high-pressure tej yam kev mob yam tsis muaj lubricating roj.Ntau yam khoom siv dav siv cov khoom siv graphite piston khob, ntsaws ruaj ruaj thiab bearings
Tam sim no, cov ntaub ntawv graphite tau siv dav hauv kev siv tshuab, metallurgy, tshuaj lom neeg kev lag luam, kev tiv thaiv hauv tebchaws thiab lwm yam haujlwm.Muaj ntau ntau yam ntawm graphite qhov chaw, qhov nyuaj cov qauv, qhov siab qhov tseeb thiab qhov yuav tsum tau ua kom zoo.Kev tshawb fawb hauv tsev ntawm graphite machining tsis tob txaus.Cov cuab yeej siv tshuab graphite hauv tsev kuj tseem tsawg.Kev ua haujlwm txawv teb chaws graphite feem ntau yog siv cov chaw ua haujlwm graphite rau kev ua haujlwm siab, uas tam sim no tau dhau los ua qhov kev loj hlob tseem ceeb ntawm graphite machining.
Kab lus no feem ntau txheeb xyuas graphite machining thev naus laus zis thiab ua cov cuab yeej siv tshuab los ntawm cov hauv qab no.
① Kev tshuaj xyuas ntawm graphite machining kev ua tau zoo;
② Feem ntau siv graphite ua tshuab ntsuas;
③ Feem ntau siv cov cuab yeej thiab txiav cov cuab yeej hauv kev ua graphite;
Graphite txiav kev ua tau zoo tsom xam
Graphite yog cov khoom siv tawv tawv nrog cov qauv heterogeneous.Graphite txiav yog ua tiav los ntawm kev tsim cov chips tsis tu ncua lossis hmoov los ntawm kev tawg ntawm cov khoom siv graphite.Hais txog kev txiav cov khoom siv graphite, cov kws tshawb fawb hauv tsev thiab txawv teb chaws tau ua ntau yam kev tshawb fawb.Cov kws tshawb fawb txawv teb chaws ntseeg tias cov txheej txheem tsim cov graphite nti yog kwv yees li thaum txiav ntug ntawm lub cuab yeej yog nyob rau hauv kev sib cuag nrog lub workpiece, thiab lub ntsis ntawm lub cuab tam yog crushed, tsim me me chips thiab me pits, thiab ib tug tawg yog tsim, uas yuav txuas ntxiv mus. mus rau pem hauv ntej thiab hauv qab ntawm lub cuab yeej lub taub hau, tsim ib lub qhov tawg, thiab ib feem ntawm lub workpiece yuav tawg vim cov cuab yeej nce qib, tsim cov chips.Cov kws tshawb fawb hauv tsev ntseeg tias cov khoom siv graphite yog qhov zoo heev, thiab kev txiav ntawm cov cuab yeej muaj lub taub hau loj, yog li lub luag haujlwm ntawm kev txiav ntug zoo ib yam li extrusion.Cov khoom siv graphite hauv qhov chaw sib cuag ntawm lub cuab yeej - lub workpiece yog nyem los ntawm lub ntsej muag rake thiab lub ntsis ntawm lub cuab yeej.Nyob rau hauv siab, brittle puas yog tsim, yog li tsim chipping chips [3].
Nyob rau hauv tus txheej txheem ntawm graphite txiav, vim hais tias ntawm kev hloov nyob rau hauv lub txiav kev taw qhia ntawm lub rounded kaum los yog kaum ntawm lub workpiece, kev hloov nyob rau hauv lub acceleration ntawm lub tshuab cuab tam, kev hloov nyob rau hauv cov kev taw qhia thiab lub kaum sab xis ntawm txiav nyob rau hauv thiab tawm ntawm lub cuab tam, txiav vibration. , thiab lwm yam, ib qho kev cuam tshuam yog tshwm sim los ntawm graphite workpiece, uas ua rau lub ntug ntawm graphite ib feem.Corner brittleness thiab chipping, cov cuab yeej hnyav hnyav thiab lwm yam teeb meem.Tshwj xeeb tshaj yog thaum ua cov ces kaum thiab nyias thiab nqaim-ribbed graphite qhov chaw, nws muaj feem ntau yuav ua rau cov ces kaum thiab chipping ntawm lub workpiece, uas kuj yog ib qho nyuaj rau graphite machining.
Graphite txiav txheej txheem 
Cov txheej txheem machining ntawm graphite cov ntaub ntawv muaj xws li tig, milling, sib tsoo, sawing, thiab lwm yam, tab sis lawv tsuas tuaj yeem paub txog kev ua cov graphite nrog cov duab yooj yim thiab tsis tshua muaj siab.Nrog rau txoj kev loj hlob sai thiab daim ntawv thov ntawm graphite high-speed machining chaw, txiav cov cuab yeej, thiab lwm yam kev txhawb nqa technologies, cov tsoos machining txoj kev tau maj mam hloov los ntawm high-speed machining technologies.Kev xyaum qhia tau hais tias: vim yog cov yam ntxwv nyuaj thiab nkig ntawm graphite, cov cuab yeej hnav hnyav dua thaum ua, yog li ntawd, nws raug nquahu kom siv cov cuab yeej carbide lossis pob zeb diamond coated.
Txiav txheej txheem ntsuas
Vim yog qhov tshwj xeeb ntawm graphite, txhawm rau ua tiav cov txheej txheem zoo ntawm cov khoom siv graphite, cov txheej txheem sib txuas yuav tsum tau coj los xyuas kom meej.Thaum roughing graphite cov ntaub ntawv, lub cuab tam tuaj yeem ncaj qha pub rau ntawm lub workpiece, siv cov kev txiav loj loj;Txhawm rau kom tsis txhob chipping thaum lub sijhawm ua tiav, cov cuab yeej nrog kev hnav zoo feem ntau yog siv los txo qhov kev txiav ntawm cov cuab yeej, thiab xyuas kom meej tias lub suab ntawm cov cuab yeej txiav tsawg dua 1/2 ntawm txoj kab uas hla ntawm lub cuab yeej, thiab ua cov txheej txheem. ntsuas xws li deceleration processing thaum ua ob qhov kawg [4].
Nws kuj tseem tsim nyog los npaj txoj kev txiav thaum txiav.Thaum ua cov txheej txheem sab hauv, cov contour ib puag ncig yuav tsum tau siv ntau npaum li qhov ua tau los txiav qhov quab yuam ntawm qhov txiav kom ib txwm ua kom tuab thiab muaj zog dua, thiab tiv thaiv lub workpiece los ntawm kev tawg [5].Thaum ua cov dav hlau los yog grooves, xaiv kab pheeb ces kaum los yog kauv pub kom ntau li ntau tau;zam cov Islands tuaj ntawm qhov chaw ua haujlwm ntawm qhov chaw, thiab tsis txhob txiav cov khoom ua haujlwm ntawm qhov chaw ua haujlwm.
Tsis tas li ntawd, txoj kev txiav kuj yog ib qho tseem ceeb uas cuam tshuam rau graphite txiav.Qhov kev vibration thaum lub sij hawm down milling yog tsawg dua li ntawm milling.Lub thickness ntawm lub cuab tam thaum lub sij hawm down milling yog txo los ntawm qhov siab tshaj plaws mus rau xoom, thiab yuav tsis muaj bouncing tshwm sim tom qab lub cuab tam txiav rau hauv lub workpiece.Yog li ntawd, down milling feem ntau yog xaiv rau kev ua graphite.
Thaum ua cov graphite workpieces nrog cov txheej txheem nyuaj, ntxiv rau kev txhim kho cov txheej txheem ua haujlwm raws li cov kev xav tau saum toj no, qee qhov kev ntsuas tshwj xeeb yuav tsum tau ua raws li cov xwm txheej tshwj xeeb kom ua tiav cov txiaj ntsig zoo tshaj plaws.
Post lub sij hawm: Feb-20-2021