Itandukaniro riri hagati ya galvanizing, cadmium plating, chrome plating, na nickel plating

Ggutunganya

Ibiranga:

Zinc irahindagurika mu kirere cyumye kandi ntiyoroshye guhindura ibara. Mu mazi no mu bidukikije bifite ubushuhe, ihura na ogisijeni cyangwa dioxyde de carbone kugira ngo ikore ogisijeni cyangwa alkaline zinc carbonate, bishobora kubuza zinc gukomeza kwiyongerera ubushuhe no gutanga uburinzi.

Zinc ishobora kwangirika cyane muri aside, alkali na sulfide. Uru ruvange rwa galvanize muri rusange rugomba kuvurwa no kwangirika. Nyuma yo kwangirika muri aside chromic cyangwa chromate, firime yakozwe yo kwangirika ntiyoroshye guhura n'umwuka utose, bigatuma ubushobozi bwayo bwo kurwanya kwangirika burushaho kwiyongera. Ku bice by'inkombe, ibice bifite inkuta nto (ubugari bw'urukuta <0.5m), n'ibice by'icyuma bisaba imbaraga nyinshi za mekanike, hagomba gukurwaho hidrojeni, mu gihe ibice by'umuringa n'umuringa bishobora kudakenera kwangirika hidrojeni.

Gutunganya ibyuma bikoresha amashanyarazi bihendutse, byoroshye gutunganya, kandi bifite ingaruka nziza. Ubushobozi busanzwe bwa zinc ni bubi cyane, bityo gusiga zinc ni irangi rito rikoreshwa mu byuma byinshi.

Galvanization ikoreshwa cyane mu kirere no mu bindi bidukikije byiza. Ariko ntikwiriye gukoreshwa nk'igice cyo gukurura.

Cipamba rya hrome

Ibiranga: Ku bice bihura n'ikirere cy'inyanja cyangwa amazi y'inyanja, no mu mazi ashyushye ari hejuru ya 70℃, cadmium plaque irahamye, irwanya ingese cyane, iraryoha neza, kandi ishonga buhoro buhoro muri aside hydrochloric, ariko irashonga cyane muri aside nitrike kandi ntishongera muri alkali. Oxyde yayo nayo ntishongera mu mazi. Cadmium plaque ni yoroshye kurusha zinc plaque, ifite hydrogen nke kandi ifatana neza.

Byongeye kandi, mu bihe bimwe na bimwe bya electrolytic, irangi rya cadmium riboneka riba ryiza cyane kurusha irangi rya zinc. Ariko umwuka ukorwa na cadmium mu gihe cyo gushonga ni uburozi, kandi umunyu wa cadmium ushongeshwa nawo ni uburozi. Mu bihe bisanzwe, cadmium ikora nk'irangi rya cathodic ku cyuma no nk'irangi rya anodic mu kirere cy'inyanja n'ubushyuhe bwinshi.

Ikoreshwa cyane cyane mu kurinda ibice byangiritse mu kirere biterwa n'amazi yo mu nyanja cyangwa umunyu usa na wo, ndetse n'umwuka wuzuye w'amazi yo mu nyanja. Ibice byinshi mu by'indege, mu mazi, no mu nganda z'ikoranabuhanga, amasoko, n'ibice by'imigozi bisizweho cadmium. Ishobora gutogoshwa, gukurwamo fosifeti, no gukoreshwa nk'ishingiro ry'irangi, ariko ntishobora gukoreshwa nk'igikoresho.

Igipfunyika cya Chromium

ibiranga:

Koromu irahamye cyane mu kirere gishyushye, aside nitrike, sulfide, carbonate, na aside organic, kandi ishongesha byoroshye muri aside hydrochloric na aside sulfuric ishyushye cyane. Iyo icyuma gikoresha amashanyarazi agororotse, iyo urwego rwa chromium rubaye anode, ishongesha byoroshye mu gisubizo cya soda caustic.

Urusobe rwa chromium rufite ubushobozi bwo gufata neza, gukomera cyane, 800-1000V, rudashira neza, urumuri rukomeye, kandi rudashira cyane. Ntiruhindura ibara riri munsi ya dogere 480℃, itangira kwiyongera k'ubushyuhe buri hejuru ya 500℃, kandi bigabanya cyane ubukana kuri 700℃Ingorane zayo ni uko chromium ikomeye, iracikagurika, kandi ikunze gutandukana, cyane cyane iyo ihuye n'ibintu byinshi bishobora guhindagurika. Kandi ifite porosity.

Ibyuma bya chromium bikunze kwibasirwa n’umwuka, bigatuma habaho firime ihindura ubushobozi bwa chromium. Kubwibyo, chromium iba irangi rya cathodic ku cyuma.

Si byiza gushyira icyuma gikingira chrome mu buryo butaziguye nk'urwego rurwanya ingese ku buso bw'ibice by'icyuma. Muri rusange, icyuma gikingira amashanyarazi gifite urwego rwinshi (ni ukuvuga icyuma gikingira umuringa).→gutwikira nikeli→chromium plated) irakenewe kugira ngo igere ku ntego yo kwangirika

gukumira no gushushanya. Ubu ikoreshwa cyane mu kunoza uburyo ibice bidashobora kwangirika, gusana ingano, urumuri rugaragara, n'amatara yo gushushanya.

Igipfunyika cya nikeli

ibiranga:

Nickel ifite ubushobozi bwo kugumana imiti mu kirere no mu gisubizo cya alkaline, ntiyoroshye guhindura ibara, kandi ihinduka oxidized gusa iyo ubushyuhe buri hejuru ya dogere 600° C. Ishonga buhoro buhoro muri aside sulfuriki na aside hydrochloric, ariko yoroshye gushonga muri aside nitrike ivanze. Yoroshye gucika muri aside nitrike yiganjemo ibintu bityo ikaba irwanya ingese neza.

Gupfuka nikeli bifite ubukana bwinshi, byoroshye gusya, bifite urumuri rwinshi rugaragaza urumuri, kandi bishobora kongera ubwiza. Ingorane yabyo ni uko bifite imyenge. Kugira ngo utsinde iyi ngorane, hashobora gukoreshwa irangi ry'ibyuma rifite urwego rwinshi, nikeli ikaba urwego rwo hagati.

Nickel ni irangi rya cathodic rikoreshwa mu byuma n'irangi rya anodic rikoreshwa mu muringa.

Ikoreshwa cyane mu kurinda irangi ry'imitako kugira ngo hirindwe ingese no kongera ubwiza bw'ubwiza. Gushyira nikeli ku bicuruzwa by'umuringa ni byiza mu gukumira ingese, ariko kubera agaciro ka nikeli, imashini zikoze mu muringa zikunze gukoreshwa aho gukoresha nikeli.