Welding maelectrode anoita basa rakakosha musimba rekuchengetedza nzvimbo welding michina, kufambisa kufambiswa kwemagetsi ikozvino uye kugadzira kupisa kunodiwa kwewelding. Nekudaro, nekufamba kwenguva, maelectrodes anogona kusangana nekupfeka uye kuderedzwa, zvichikanganisa kuita kwavo uye weld mhando. Kunzwisisa zvikonzero zvekupfeka kwe electrode kwakakosha pakuita kwakakodzera kugadzirisa uye kutsiva nzira. Ichi chinyorwa chinoongorora izvo zvinoita kuti electrode kupfeka musimba rekuchengetedza nzvimbo welding michina, ichijekesa zvikonzero zviri pasi uye zvinogona kugadzirisa.
- Electrical Resistance uye Heat Generation: Munguva yewelding process, mafungu emagetsi akakwira anopfuura nepakati pemaelectrode, achigadzira kupisa panzvimbo dzekusangana neanoshanda. Kupisa uku kunogona kukonzera kukwidziridzwa kwekupisa kwenzvimbo, zvichitungamira kukuwedzera kwekupisa uye kudonha kwema electrode. Iyo inodzokororwa yekudziya uye kutonhora kutenderera inokonzeresa kushushikana pamusoro pe electrode pamusoro, zvichikonzera kupera zvishoma nezvishoma, deformation, uye kurasikirwa kwezvinhu. Yepamusoro welding currents uye kurebesa welding nguva inogona kuwedzera iyi yekupfeka.
- Mechanical Friction uye Pressure: Welding electrode inoiswa pasi pesimba remagetsi panguva yekushanda kwewelding. Dzvinyiriro inoshandiswa kuma electrode, pamwe nechero kufamba kwehama kana kuzunguzika pakati pema electrode uye maworkpieces, zvinogona kukonzera kupokana nekukwesha. Uku kupindirana kwemuchina kunogona kutungamira kune abrasion yepasi, kukukurwa, uye kunyange kuumbwa kwepakatsemuka kana machipisi pane electrode pamusoro. Zvinhu zvakadai sesimba rakawandisa, kurongeka kusina kunaka, kana kuvapo kwezvinosvibisa zvinogona kumhanyisa iyi yekupfeka.
- Electrochemical Reactions: Mune mamwe maitirwo ewelding, kunyanya ayo anosanganisira simbi dzakasiyana kana nharaunda dzinoora, maitiro emagetsi anogona kuitika panzvimbo ye electrode. Aya maitiro anogona kutungamirira kune electrode corrosion, pitting, kana kugadzirwa kwemaokisi. Corrosion inopedza simba zvinhu zve electrode, zvichiita kuti zvive nyore kupfeka uye kuora. Zvinhu zvakadai sekusakwana kwe electrode kusarudzwa kwezvinhu kana gasi rekudzivirira risingakodzeri zvinogona kuita kuti ikurumidze kupfeka electrochemical.
- Zvinosvibisa uye Oxidation: Zvinosvibisa, senge tsvina, girisi, kana yakasara flux, inogona kuungana pane electrode pamusoro nekufamba kwenguva. Izvi zvinosvibisa zvinogona kukanganisa kufambiswa kwemagetsi uye kupisa kwema electrode, zvichikonzera nzvimbo dzinopisa dzinopisa, kudziyisa kusina kuenzana, uye hurombo hwe weld. Pamusoro pezvo, kuratidzwa kweokisijeni munzvimbo yewelding kunogona kutungamirira kune oxidation ye electrode pamusoro, kuumba maokisidhi anoderedza conductivity uye kuwedzera kuramba, pakupedzisira kukanganisa kushanda uye hupenyu hwemagetsi.
Mitigation Strategies: Kugadzirisa kupfeka kwe electrode mumagetsi ekuchengetedza nzvimbo welding michina, akati wandei anogona kushandiswa:
- Kugara uchiongorora uye kucheneswa kwema electrode kubvisa zvinosvibisa uye kuve nechokwadi chekubata kwakaringana.
- Yakakodzera electrode zvinhu kusarudzwa zvichibva pane welding application uye workpiece zvinhu.
- Kushandisa akakodzera ekudzivirira gasi kana machira kuderedza oxidation uye electrochemical maitiro.
- Kugadzirisa maparamendi ekushongedza, seazvino, nguva, uye kudzvanywa, kuderedza kupisa kwakanyanya uye kushushikana kwemagetsi pama electrode.
- Kudzoreredzwa nenguva kwema electrode akasakara kuchengetedza anowirirana weld mhando uye kudzivirira kukuvadzwa kune workpieces.
Mhedziso: Kunzwisisa zvikonzero zvekupfeka kwe electrode mumagetsi ekuchengetera nzvimbo welding michina kwakakosha kuchengetedza kushanda kwakanaka uye kwepamusoro-soro. Nekufunga zvinhu zvakaita sekupokana kwemagetsi, kukwenya kwemagetsi, maitiro emagetsi, uye zvinosvibisa, vashandisi vanogona kuita matanho ekudzivirira uye nzira dzekudzikisa kuti varebe hupenyu hwemagetsi uye kuve nechokwadi chekuvimbika kweweld kuita. Kugara uchigadzirisa, kusarudzwa kwezvinhu zvakakodzera, uye kuomerera kune zvinokurudzirwa welding paramita kwakakosha mukuderedza kupfeka kweelectrode uye nekuwedzera hupenyu hurefu hwemagetsi mumashini ekuchengetera magetsi.
Nguva yekutumira: Jun-13-2023
