Maelectrode egrafiti ane simba rakawanda, nekutsiva maelectrode emhangura nemaelectrode egrafiti ekugadzira mold, anopfupikisa zvakanyanya kutenderera kwekugadzira mold, anowedzera kubereka kwevashandi, uye anoderedza mutengo wekugadzira mold. Mumakore achangopfuura, nekuunzwa kwemamold akanyatsonaka uye mamold anoshanda zvakanyanya (nekupfupika kwemold), zvinodiwa nevanhu pakugadzira mold zvave zvichikwira zvakanyanya. Nekuda kwemiganhu yakasiyana-siyana yemaelectrode emhangura pachayo, Yakaramba ichikundikana kusangana nezvinodiwa zvekugadzirwa kweindasitiri yemamold. Graphite, sechinhu cheEDM electrode, yave ichishandiswa zvakanyanya muindasitiri yemamold nekuda kwezvakanaka zvayo zvakaita sekushanda zvakanyanya, huremu hushoma, kuumbwa nekukurumidza, mwero wekuwedzera wakaderera, kurasikirwa kwakaderera uye kupfekedzwa nyore. Hazvidzivisike kuti ichatsiva maelectrode emhangura.
1. Hunhu hweGraphite Electrode Materials
Kugadzira CNC kunokurumidza kukurumidza, kugona kwazvo kugadzira uye nyore kupfekedza. Kumhanya kwekugadzira michina yegraphite kwakapetwa katatu kusvika kashanu pane maelectrode emhangura, uye kumhanya kwekugadzirisa kwakanyatsonaka kwakanyanya. Uyezve, simba rayo rakakwira zvikuru. Kune maelectrode epamusoro-soro (50 kusvika 90mm) uye akatetepa (0.2 kusvika 0.5mm), haawanzo shanduka panguva yekugadzira. Uyezve, muzviitiko zvakawanda, zvigadzirwa zvinofanirwa kuve nemhedzisiro yakanaka kwazvo yekuumbwa. Izvi zvinoda kuti pakugadzira maelectrode, anofanirwa kugadzirwa semaelectrode evarume akabatana sezvinobvira. Zvisinei, kune nzvimbo dzakasiyana-siyana dzakavanzwa panguva yekugadzira maelectrode evarume akabatana. Nekuda kwehunhu hwekuchekerera huri nyore hwegraphite, dambudziko iri rinogona kugadziriswa zviri nyore uye huwandu hwemaelectrode hunogona kuderedzwa zvakanyanya, izvo zvisingagone kuitwa nemaelectrode emhangura.
2. Kugadzirwa kweEDM nekukurumidza, kuwedzera kudiki kwekupisa uye kurasikirwa kushoma: Nekuda kwekufambiswa kwemagetsi kwegraphite kupfuura kwemhangura, mwero wayo wekubuda unokurumidza kupfuura wemhangura, uchipetwa katatu kusvika kashanu kupfuura wemhangura. Uyezve, inogona kutsungirira simba guru panguva yekubuda, izvo zvinobatsira zvikuru pakugadzira machining emagetsi asina kurongeka. Panguva imwecheteyo, pasi pehuwandu hwakafanana, huremu hwegraphite hunopfuura 1/5 kupfuura wemhangura, izvo zvinoderedza zvakanyanya mutoro weEDM. Ine mabhenefiti makuru mukugadzira maelectrode makuru uye maelectrode evarume akabatanidzwa. Tembiricha yesublimation yegraphite i4200℃, inova katatu kusvika ka4 kupfuura yemhangura (tembiricha yesublimation yemhangura i1100℃). Pakupisa kwakanyanya, shanduko
Ultra-yakakwirira simba graphite electrode
Idiki kwazvo muchimiro (1/3 kusvika 1/5 yemhangura pasi pemamiriro akafanana emagetsi) uye hainyorove. Simba rekuburitsa rinogona kuendeswa kubasa zvinobudirira uye nekushandiswa kushoma. Nekuti simba regraphite rinowedzera kana tembiricha yakakwira, rinogona kuderedza kurasikirwa kwekuburitsa (kurasikirwa kwegraphite i1/4 yemhangura), zvichiita kuti kugadzirwa kuve kwakanaka.
3. Kurema kushoma uye mutengo wakaderera: Mumutengo wekugadzira wemhando dzemamold, nguva yekugadzira yeCNC, nguva yeEDM, uye kupfeka kwemaelectrode emaelectrodes ndizvo zvinonyanya kukosha, uye zvese izvi zvinotsanangurwa nechinhu cheelectrode pachacho. Zvichienzaniswa nemhangura, kumhanya kwekugadzira uye kumhanya kweEDM kwegraphite zvese zvakapetwa katatu kusvika kashanu kupfuura mhangura. Panguva iyi, kusakara kushoma uye kugadzirwa kwe integral graphite electrode zvinogona kuderedza huwandu hwemaelectrodes, nokudaro zvichideredza kushandiswa kwezvinhu uye nguva yekugadzira yemaelectrodes. Zvese izvi zvinogona kuderedza zvakanyanya mutengo wekugadzira mamold.
2. Zvinodiwa uye Hunhu hweMagadzirirwo eGraphite Electrodes eMichina neMagetsi
1. Kugadzirwa kwema electrode: Kugadzirwa kwema electrode e graphite nehunyanzvi kunonyanya kushandisa maturusi emuchina anomhanya zvakanyanya pakugadzirisa. Maturusi emuchina anofanira kunge akadzikama zvakanaka, aine kufamba kwakafanana uye kwakasimba kwe three-axis pasina kudedera. Uyezve, kutenderera kwezvikamu zvakaita se main shaft kunofanirawo kunge kwakanaka sezvinobvira. Electrode inogonawo kugadziriswa pamaturusi emuchina, asi maitiro ekunyora nzira yemidziyo akasiyana neema electrode emhangura.
2.EDM electrical discharge maelectrodes graphite i carbon electrodes. Nekuti graphite ine conductivity yakanaka yemagetsi, inogona kuchengetedza nguva yakawanda mu electrical discharge machine, inova imwe yezvikonzero nei graphite ichishandiswa se electrode.
3. Hunhu hweMagadzirirwo eGraphite Electrodes: Graphite yemaindasitiri yakaoma uye inopfava, zvichikonzera kusakara kwakanyanya pazvishandiso panguva yekugadzirwa kweCNC. Kazhinji, zvinokurudzirwa kushandisa maturusi akafukidzwa nealloy yakaoma kana dhaimani. Kana graphite ichishandiswa pakugadzirwa kwerough, chishandiso chinogona kuiswa zvakananga pamusoro nepaburi rebasa. Zvisinei, panguva yekugadzira, kudzivirira kutsemuka nekutsemuka, chishandiso chakareruka uye nzira yekufamba nekukurumidza inowanzo shandiswa.
Kazhinji, graphite haiwanzo tyoka kana kudzika kwekucheka kuri pasi pe 0.2mm, uye kunaka kwepamusoro kwemadziro eparutivi kunogona kuwanikwawo. Guruva rinogadzirwa panguva yekushandiswa kweCNC kwema graphite electrodes rakakura uye rinogona kupinda mugwara rekutungamira, screws dze lead uye spindles dzechishandiso chemuchina, nezvimwewo. Izvi zvinoda kuti chishandiso chemuchina wekugadzirisa graphite chive nezvishandiso zvinoenderana zvekubata guruva re graphite, uye mashandiro ekuvhara echishandiso chemuchina anofanirawo kunge akanaka nekuti graphite ine chepfu. Graphite powder chinhu chinonyatsonzwa makemikari. Resistivity yayo inochinja munzvimbo dzakasiyana, zvichireva kuti resistance value yayo inosiyana. Zvisinei, pane chimwe chinhu chinoramba chakafanana: graphite powder ndeimwe yezvinhu zvakanaka zve conductive zvisiri zvesimbi. Chero bedzi graphite powder yakachengetwa muchinhu chinodzivirira pasina kukanganiswa, seshinda yakatetepa, icharamba iine magetsi. Asi resistance value chii? Hapana nhamba chaiyo yeiyi value zvakare, nekuti fineness ye graphite powder inosiyana, uye resistance value ye graphite powder inoshandiswa muzvinhu zvakasiyana nenzvimbo ichave yakasiyanawo.
Ungasaziva kuti upfu hwegrafiti hwakachena zvakanyanya hune mashandisirwo anobatsira pakufambisa zvinhu:
Kazhinji, rabha inochengetedza kupisa. Kana kuchidiwa kufambiswa kwemagetsi, zvinhu zvinofambisa mhepo zvinofanira kuwedzerwa. Graphite powder ine simba rakanaka rekufambisa magetsi uye mafuta ekuzora. Graphite inogadzirwa kuita graphite powder, ine simba rakanaka rekufambisa magetsi. Kana graphite powder yakakwira, zvinoita kuti conductive performance yayo ive nani. Mafekitori mazhinji ezvigadzirwa zverabha anoda conductive rabha. Saka, graphite powder inogona kuwedzerwa kurabha here kuti iite magetsi? Mhinduro ndeyekuti hongu, asi panewo mubvunzo: Ndeipi chikamu chegraphite powder murabha? Mamwe mabhizinesi anoshandisa chikamu chisingapfuuri 30%, icho chinoshandiswa kuzvigadzirwa zverabha zvisingapfeki zvakaita sematai emotokari, nezvimwewo. Kunewo mafekitori erabha akakosha anoshandisa chikamu che100%. Zvigadzirwa zvakadaro chete ndizvo zvinogona kufambisa magetsi. Nheyo huru yekufambiswa kwemhepo ndeyekuti conductor haigone kukanganiswa, sewaya. Kana ikakanganiswa pakati, haizopiswi magetsi. Graphite powder murabha inodzora ndiyo conductor Kana graphite powder yakavharwa neconductive rabha, haizofambiswi magetsi. Saka, kana chikamu cheupfu hwegirafiti chakanyanya kuderera, mhedzisiro yekufambisa inogona kunge isina kunaka.
Upfu hwegirafiti chinhu chinonzwa zvakanyanya kukanganiswa nemakemikari. Kuramba kwaro kuchichinja munzvimbo dzakasiyana, zvichireva kuti kukosha kwaro kwekudzivirira kunosiyana. Zvisinei, pane chinhu chimwe chete chinoramba chakafanana: upfu hwegirafiti hwakachena zvakanyanya ndeimwe yezvinhu zvakanaka zvesimbi zvisina simbi. Chero bedzi upfu hwegirafiti hwakachengetwa muchinhu chinodzivirira pasina kukanganiswa, seshinda yakatetepa, hucharamba huchishandiswa magetsi. Asi kukosha kwekudzivirira chii? Hapana nhamba chaiyo yemutengo uyu zvakare, nekuti kupfava kweupfu hwegirafiti kunosiyana, uye kukosha kwekudzivirira kweupfu hwegirafiti hunoshandiswa muzvinhu zvakasiyana nenzvimbo kuchasiyanawo.
Nguva yekutumira: Chivabvu-09-2025