1. Babban Ka'ida: Juyawa Electroplating
Electropolishing shine narkar da kayan aikin ƙarfe a cikin wanka na electrolyte don cire kayan saman, rage ƙazanta, da kuma ƙirƙirar ƙarewa mai haske da aiki.
Ka yi tunanin shi a matsayinakasin electroplating:
● Electroplating: Aikin aiki shine cathode ($-$) → ions na ƙarfe daga farantin mafita zuwa saman.
● Yin amfani da wutar lantarki: Workpiece shine anode ($+$) → Ana haɗa ƙwayoyin ƙarfe da oxidize kuma ana cire su daga saman zuwa ruwan da ke cikinsa.
2. Mabuɗin Sanyi: Tsarin Iyakar Mai Danko
Idan narkar da sinadarin anodic kawai ya cire ƙarfe, zai yi masa fenti kawai. Ta yaya yake daidaita shi? Amsar tana cikin layin iyaka mai kama da na roba, wani ra'ayi da ke tsakiyar ka'idar goge lantarki.
● Tsarin: Yayin da ions na ƙarfe ke narkewa daga anode, suna taruwa a cikin siririn layin electrolyte kusa da saman aikin.
● Matsakaicin Mayar da Hankali: Wannan Layer yana ƙara yawan ions na ƙarfe, wanda ke ƙara dankonsa da juriyar wutar lantarki.
● Tsarin da ke Sarrafa Yaɗuwa: Ba a iyakance saurin narkewar wutar lantarki ko motsin amsawa ba, amma ta hanyar saurin da waɗannan ions na ƙarfe za su iya yaɗuwa daga saman zuwa cikin babban electrolyte.
3. Matsayin Iyakancewa na Yanzu: "Wurin Daɗi"
Domin aikin electropolishing ya yi aiki, dole ne ka yi aiki a cikin wani takamaiman tsarin lantarki: matakin wutar lantarki mai iyaka.
A cikin lanƙwasa na polarization (Current Density vs. Voltage), za ku ga yankuna daban-daban:
1. Yankin Aiki (Ƙarancin ƙarfin lantarki): Ƙarfin wutar lantarki yana ƙaruwa tare da ƙarfin lantarki. Gabaɗaya, ana yin ƙwanƙwasa ba tare da tsari ba. Sakamako: Ƙarƙashin ƙusa da kuma ƙarewa mara kyau.
2. Yankin Passive/Plateau (Mafi kyawun ƙarfin lantarki): Wutar lantarki ta kasance mai daidaito duk da ƙaruwar ƙarfin lantarki. Layin mai laushi yana sarrafa yaɗuwa gaba ɗaya. Sakamako: Ingantaccen gogewar lantarki, mafi girman santsi, da haske.
3. Yankin Canja wurin (Babban ƙarfin lantarki): Ƙarar wutar lantarki ta sake ƙaruwa. Juyin iskar oxygen da lalacewar wurare (rami, kwararar iskar gas) suna faruwa. Sakamako: Gogewa da yawa, lalacewa.
Dokar aiki: Kiyaye ƙarfin tantanin halitta wanda ke riƙe ki a kan tudun.
4. Sigogi na Tsarin Aiki & Matsalolin
Don cimma sakamakon "nutsewa mai zurfi" a aikace, sarrafa waɗannan masu canji:
● Zafin jiki: Yana ƙara yawan yaɗuwa, yana rage ƙashin ƙugu. Dole ne a riƙe shi akai-akai ($\pm 2^\circ C$). Yana da zafi sosai → yana yin etching. Ana buƙatar sanyi sosai → ƙarfin lantarki mai yawa, yana yin streaking.
● Yawan Yawa a Yanzu: Yawanci 10–50 A/$dm^2$. An tsara shi ta hanyar tsarin sassa. Ƙasa ga sassa masu laushi.
● Lokaci: Minti 2-10 na yau da kullun. Tsawon lokaci ba koyaushe yake da kyau ba; gogewa da yawa na iya haifar da ramuka.
● Tsarin Cathode: Dole ne ya yi kama da tsarin sassa masu rikitarwa don kiyaye rarrabawar wutar lantarki iri ɗaya. "Ƙarfin jefawa" ba shi da kyau.
Matsalolin da Suka Faru da Tushen Electrochemical:
· Bututun Iskar Gas: Juyin halittar tafasa ko iskar oxygen na gida (yankin transpassive).
· Peel na Lemu / Pitting: Yana aiki a yankin da ke aiki (ƙarancin ƙarfin lantarki) ko gurɓataccen electrolyte (misali, chlorides).
· Gogewa mara daidaito: Rashin kyawun sanya cathode ko rashin isasshen motsin babban electrolyte (wanda baya damun ƙaramin Layer mai ƙauri amma yana wartsake yawan yawan sinadarin).
Takaitawa: Amfani da Electrochemical
Electropolishing tsari ne na narkar da sinadarai masu iyakantaccen jigilar kayayyaki. Ba a samun kammalawa mai santsi ta hanyar "ƙone" kololuwa ba, amma ta hanyar kafa wani yanki mai ƙarfi mai ƙarfi wanda ke haifar da mafi girman ƙimar narkewa a yanayin da ke fitowa daga siffofin saman. Yana aiki daidai akan matakin wutar lantarki mai iyaka, tare da sinadari mai narkewa na acid, yana samar da saman da ya fi santsi, tsafta, kuma mafi aiki fiye da kowane madadin injiniya.
Lokacin Saƙo: Afrilu-09-2026