Muaj ntau lub hauv paus rau kev xaiv graphite electrode cov ntaub ntawv, tab sis muaj plaub yam tseem ceeb:
1. Qhov nruab nrab particle txoj kab uas hla ntawm cov khoom
Qhov nruab nrab particle txoj kab uas hla ntawm cov khoom ncaj qha cuam tshuam rau qhov paug tawm ntawm cov khoom.
Qhov me me qhov nruab nrab particle loj ntawm cov khoom, qhov sib txawv ntawm cov khoom tawm, qhov ruaj khov ntawm qhov paug, thiab qhov zoo ntawm qhov chaw zoo.
Rau forging thiab tuag-casting pwm nrog tsawg nto thiab precision yuav tsum, nws yog feem ntau pom zoo kom siv coarser hais, xws li ISEM-3, thiab lwm yam.; rau cov pwm hluav taws xob uas muaj qhov siab thiab qhov yuav tsum tau ua, nws raug pom zoo kom siv cov ntaub ntawv nrog qhov nruab nrab particle loj hauv qab 4μm.
Los xyuas kom meej qhov tseeb thiab nto tiav ntawm cov txheej txheem pwm.
Qhov me me qhov nruab nrab particle loj ntawm cov khoom, qhov me dua qhov poob ntawm cov khoom, thiab lub zog ntau dua ntawm cov ion pawg.
Piv txwv li, ISEM-7 feem ntau pom zoo rau precision tuag-casting pwm thiab forging pwm. Txawm li cas los xij, thaum cov neeg siv khoom muaj cov kev xav tau tshwj xeeb siab, nws raug nquahu kom siv cov ntaub ntawv TTK-50 lossis ISO-63 kom ntseeg tau tias cov khoom siv tsawg dua.
Xyuas kom meej qhov tseeb thiab nto roughness ntawm pwm.
Nyob rau tib lub sijhawm, qhov loj dua cov khoom, qhov nrawm nrawm dua thiab qhov me dua qhov poob ntawm qhov ntxhib machining.
Qhov laj thawj tseem ceeb yog qhov kev siv zog tam sim no ntawm cov txheej txheem tso tawm sib txawv, uas ua rau muaj kev tawm dag zog sib txawv.
Tab sis qhov chaw tiav tom qab tso tawm kuj hloov nrog kev hloov ntawm cov khoom.
2. Flexural zog ntawm cov khoom
Lub zog flexural ntawm cov khoom siv yog ib qho kev qhia ncaj qha ntawm lub zog ntawm cov khoom, qhia qhov nruj ntawm cov qauv sab hauv ntawm cov khoom.
Cov ntaub ntawv muaj zog muaj zog kuj muaj qhov ua tau zoo tawm tsam kev ua haujlwm. Rau cov khoom siv hluav taws xob nrog cov kev xav tau siab, sim xaiv cov khoom siv zog zoo dua.
Piv txwv li: TTK-4 tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm cov khoom siv hluav taws xob sib txuas, tab sis rau qee cov khoom siv hluav taws xob sib txuas nrog cov kev xav tau tshwj xeeb, koj tuaj yeem siv tib qhov me me tab sis cov khoom siv zog me ntsis TTK-5.
3. Ntug hardness ntawm cov khoom
Hauv kev nkag siab ntawm kev nkag siab ntawm graphite, graphite feem ntau suav tias yog cov khoom muag muag.
Txawm li cas los xij, cov ntaub ntawv xeem tiag tiag thiab cov ntaub ntawv siv tau qhia tias qhov nyuaj ntawm graphite yog siab dua li cov khoom siv hlau.
Hauv kev lag luam tshwj xeeb graphite, universal hardness test standard yog txoj kev ntsuas Shore hardness, thiab nws cov qauv ntsuas txawv ntawm cov hlau.
Vim cov txheej txheem txheej ntawm graphite, nws muaj kev ua tau zoo heev thaum lub sij hawm txiav. Lub zog txiav tsuas yog kwv yees li 1/3 ntawm cov khoom siv tooj liab, thiab qhov chaw tom qab machining yog yooj yim los lis.
Txawm li cas los xij, vim nws cov hardness siab dua, cov cuab yeej hnav thaum txiav yuav me ntsis ntau dua li cov cuab yeej txiav hlau.
Nyob rau tib lub sijhawm, cov khoom siv nrog cov hardness siab muaj kev tswj xyuas kom zoo dua ntawm kev tso tawm.
Hauv peb cov khoom siv EDM, muaj ob cov ntaub ntawv xaiv los ntawm cov ntaub ntawv ntawm tib qhov loj me uas tau siv ntau zaus, ib qho muaj zog dua thiab lwm yam nrog qis hardness kom tau raws li cov kev xav tau ntawm cov neeg siv khoom sib txawv.
xav tau.
Piv txwv li: cov ntaub ntawv nrog qhov nruab nrab particle loj ntawm 5μm suav nrog ISO-63 thiab TTK-50; cov ntaub ntawv nrog qhov nruab nrab particle loj ntawm 4μm suav nrog TTK-4 thiab TTK-5; Cov ntaub ntawv nrog qhov nruab nrab qhov loj me ntawm 2μm suav nrog TTK-8 thiab TTK-9.
Feem ntau xav txog qhov nyiam ntawm ntau hom neeg siv khoom siv hluav taws xob tawm thiab machining.
4. Intrinsic resistivity ntawm cov khoom
Raws li peb lub tuam txhab cov txheeb cais ntawm cov yam ntxwv ntawm cov ntaub ntawv, yog hais tias qhov nruab nrab hais ntawm cov ntaub ntawv yog tib yam, lub tso tawm ceev nrog ib tug ntau dua resistivity yuav qeeb dua ib tug tsawg resistivity.
Rau cov ntaub ntawv nrog tib qhov nruab nrab particle loj, cov ntaub ntawv uas tsis tshua muaj resistivity yuav muaj ib tug sib sib zog nqus zog thiab hardness dua cov ntaub ntawv uas muaj siab resistivity.
Ntawd yog, qhov tso tawm ceev thiab poob yuav txawv.
Yog li ntawd, nws yog ib qho tseem ceeb heev uas yuav tau xaiv cov ntaub ntawv raws li kev thov tiag tiag.
Vim qhov tshwj xeeb ntawm cov hmoov hlau metallurgy, txhua qhov ntsuas ntawm txhua pawg ntawm cov khoom muaj qee qhov kev hloov pauv ntawm nws tus nqi sawv cev.
Txawm li cas los xij, qhov cuam tshuam ntawm cov khoom siv graphite ntawm tib qib zoo sib xws, thiab qhov sib txawv ntawm daim ntawv thov cuam tshuam vim muaj ntau yam tsis muaj tsawg heev.
Kev xaiv ntawm cov khoom siv electrode yog ncaj qha cuam tshuam rau cov nyhuv ntawm qhov paug tawm. Rau qhov loj, seb qhov kev xaiv ntawm cov khoom puas tsim nyog txiav txim siab qhov xwm txheej kawg ntawm qhov tso tawm ceev, machining raug thiab nto roughness.
Cov ntaub ntawv plaub hom no sawv cev rau qhov kev tso tawm tseem ceeb ntawm cov khoom siv thiab ncaj qha txiav txim siab qhov ua tau zoo ntawm cov khoom siv.
Post lub sij hawm: Mar-08-2021