Polarity nyhuv
Lub npe hu ua polarity nyhuv yog tias nyob rau hauv tshuab dhos ua, vim muaj qhov sib txawv zoo thiab tsis zoo polarities. Qhov tshwm sim uas tus nqi ntawm electrolytic corrosion txawv ntawm ib leeg yog generated. Xyaum ua pov thawj. Nyob rau hauv cov txheej txheem ntawm tshuab dhos machining, ob qho tib si zoo thiab tsis zoo ncej yog raug rau electro-erosion, tab sis lawv cov nyiaj electro-erosion sib txawv, uas yog qhov tshwm sim ntawm cov nyhuv polarity. Ua ntej kawm txog cov nyhuv polarity, nws yog ib qho tsim nyog yuav tsum nkag siab tias qhov cuam tshuam ncaj qha ntawm cov nyhuv polarity ntawm cov khoom siv hluav taws xob thiab cov khoom siv thiab cov cuab yeej yog vim qhov sib txawv ntawm lub zog faib rau qhov chaw ntawm ob lub electrodes. Lub zog ntawm cov electrodes yog qhov tshwm sim ntawm kev sib cuam tshuam ntawm cov ions zoo thiab cov hluav taws xob tsis zoo. Cov electrons muaj me me, me me inertia, thiab hloov tau yooj yim. Ib tug loj tus xov tooj ntawm electrons khiav mus rau qhov zoo electrode thiab bombard qhov zoo electrode nto, ua rau lub zoo electrode nto ntawm lub tshuab dhos kom yaj thiab yaj sai heev. Vaporization: thaum zoo ions muaj qhov loj inertia thiab qeeb, tsuas yog ib feem me me tuaj yeem ncav cuag qhov tsis zoo ntawm electrode, thaum muaj ntau qhov zoo ions tsis tuaj yeem. Yog li ntawd, thaum lub nqaim mem tes (uas yog, lub sij hawm tso tawm ntev) yog siv rau kev ua, qhov zoo ions nrog loj loj thiab inertia yuav muaj sij hawm txaus kom ncav cuag qhov tsis zoo electrode. muaj zog tshaj electrons. Nyob rau tib lub sijhawm, qhov zoo ions mus txog qhov tsis zoo electrode yuav txwv kev txav ntawm electrons, yog li tus nqi ntawm electrolytic corrosion ntawm qhov tsis zoo electrode yuav ntau dua li qhov zoo electrode. Nyob rau lub sijhawm no, lub workpiece yuav tsum txuas nrog qhov tsis zoo electrode. Nws tuaj yeem pom los ntawm qhov no tias txoj kev "tsis zoo polarity" yog siv thaum siv cov mem tes nqaim, thiab txoj kev "positive polarity" yog siv thaum siv cov pulses ntev.
Txhawm rau kom siv tag nrho cov txiaj ntsig polarity thiab txo qhov poob ntawm cov cuab yeej electrodes, txoj kev xaim polarity yuav tsum raug xaiv kom raug, kom qhov kev tshem tawm ceev ntawm lub workpiece yog qhov siab tshaj plaws thiab cov cuab yeej poob qis.
Kev cuam tshuam ntawm cov ntaub ntawv hlau ntawm tus nqi ntawm galvanic corrosion
Qhov tsis sib xws ntawm galvanic corrosion nyob rau saum npoo ntawm qhov zoo thiab qhov tsis zoo electrodes tsis yog tsuas yog cuam tshuam nrog lub polarity ntawm cov electrodes, tab sis kuj muaj kev sib raug zoo nrog cov ntaub ntawv ntawm cov electrodes. Thaum cov mem tes tawm lub zog zoo ib yam, qhov siab dua qhov melting point, boiling point, tshwj xeeb tshav kub muaj peev xwm, latent tshav kub ntawm vaporization, thiab lwm yam ntawm cov hlau workpiece, qhov tsawg electrolytic corrosion yuav, thiab qhov nyuaj dua nws yuav ua tau. . Qhov loj dua cov thermal conductivity ntawm cov hlau, cov cua kub ntau tuaj yeem ua thiab dissipated mus rau lwm qhov chaw, uas txo cov nqi ntawm corrosion. Yog li ntawd, tus nqi ntawm electrode yaig yog ze ze rau cov thermal conductivity thiab lwm yam thermal constants ntawm cov khoom siv electrode.