Electro-less nickel plating: Zvese Zvaunoda Kuziva
Yekupedzisira update 08/31, inofungidzirwa kuverenga nguva: 6 mins
Zvikamu zvine Electroless nickel plating
Nickel ndiyo yechishanu simbi inonyanya kuwanikwa panyika, ine chitarisiko chinopenya, kuomarara kwakanakisa, uye inodzivirira ngura, zvichiita kuti ive yakanaka pakudzivirira kupfekedzwa pamusoro pezvimwe zvinhu.Nekuda kweizvozvo, Nickel ndiyo yakanakisa plating sarudzo yeakasiyana masimbi akadaialuminium, simbi, mhangura, tungsten, polymer, nezvimwe zvakawanda.Electroless Nickel platingikemikari yakakurumbira yeplating process kubva mumushonga une Nickel, sulfate, phosphate, uye carbolic acid.Iyi mhinduro inosanganiswa uye inopisa isati yaenderera mberi neplating.Iyi nzira yakashandiswa muindasitiri yekugadzira kweanopfuura makore makumi mashanu, saka unogona kufungidzira kuti yakakurumbira sei mukatisurface finishing applications.
Mhinduro dzinoshandiswa muElectroless Nickel Plating
Kune akasiyana makemikari mhinduro anoshandiswa kune electroless nickel plating.Ngatinzwisise imwe neimwe yadzo kuburikidza nekuenzanisa tafura yekudzidza pazasi;
| SN | Chemical
| Basa | Mienzaniso
|
| 1 | Soluble munyu weNickel
| Iyo inoderedzwa uye inoiswa Pamusoro pezvinhu kuti zvipfekedzwe (substrate)
| Nickel chloride (NiCl₂), Nickel Sulfate (NiSO₄) |
| 2 | Kuderedza Agent
| Inowana oxidized nekudzikisa iyo simbi ion.
| Formaldehyde(CH 2 O ), Hypophosphite
|
| 3 | Complexion agent
| Kuvandudza kunaka kwe nickel deposition
| Fluorides, glycinates, succinate
|
| 4 | Stabilizer
| Kudzivirira kuparara kwebhati replating
| Thallium, Calcium
|
| 5 | Buffer
| Dzora iyo PH yekugezesa yekugezera kuti uwane yakatetepa uye yakafanana deposition yeNickel
| Sodium acetate, sodium hydroxide
|
Chinoshanda sei?
Kushanda musimboti
Pano, electro-shoma zvinoreva kuti hapana ikozvino inoshandiswa mukugadzira.Pane kudaro, mumiririri anoderedza anopa erekitironi yekuderedza ion yesimbi, zvichikonzera simba rekukanda rakakwirira.Iyo nickel ion (2e +) mumushonga, paunenge uchiita neinoderedza (2e-), isa Nickel pamusoro pe substrate material.
Ni2+(kubva kune nickel munyu mhinduro) + 2e- (kubva kuReducing agent) = Ni (pane substrate surface)
Matanho eElectroless Nickel Plating
Danho 1: Kugadzirira kurongedza
Danho rekutanga nderekuchenesa zvidimbu zvinoputirwa kuitira kuti kusvibiswa kupi zvako, zvakadai seguruva, mafuta, slags, girisi, uye chero chemikemikari iri pamusoro, inoshambidzwa, ichigadzirira iyo yakanakisisa nickel coating adhesion.Kunoshandiswa kuchenesa zvinhu zvakaita sesulfuric acid uye hydrochloric acid, inogezwa nemvura yakagayiwa mubhavhu rinopisa kuti isaite asidhi uye kuti isashatise pamusoro.
Danho 2: Kurapa pabhati rekuputira
Kurapa-chirimwa che electroless nickel plating
Mushure mekuchenesa zvikamu uye kugadzirira mhinduro yekugezesa, iyo plating process inogona kutanga.Zvikamu zvave kunyudzwa mukugeza nickel plating ine mhosva dzakanaka.Zvinhu zvichaputirwa zvinokwezva maion nickel anochajiswa kune huso hwawo, zvichikonzera runyoro rwekupfeka.Nekuti electroless nickel plating haidi kunobva magetsi, tembiricha yekugezesa yekugezera ndiyo yekutanga kudzora kusiyanisa mukuita (70 kusvika 90).0C inodiwa).
Ukobvu hweiyo nickel layer yakaiswa inosiyana pakati pe5 ne25 microns paawa.Nekudaro, nekuti hapana chazvino uye iri autocatalytic plating process, hapana muganho wakadaro pakukora;sezvo nguva yekurapa inowedzera, ndizvo zvichaitawo deposition ukobvu.
Danho rechitatu: Post-kugadzirisa
Munguva ye post-processing stage, zvakanamirwa zvimedu uye zvisaririra zvinobviswa nekusuka neasidhi, alkali, uye surfactant solution.Zvadaro, kuwedzera kupedzisa, senge polishing, waxing, nezvimwe, zvinoshandiswa zvichienderana nezvinodiwa.
Kufurira Zvinhu muElectroless Nickel Plating
Zvinhu zvakati wandei zvinopesvedzera mhedzisiro ye nickel electroless plating, iyo inofanirwa kudzorwa kuti iwane inodiwa yepamusoro yekupedzisa mhando.
1. Kusakwana pamusoro
Iyo nickel plating inokanganiswa nekusakwana kwepamusoro senge maburrs, slags, uye preformed ngura.Saka zano rakanakisa nderekuchengeta zvinhu izvi mupfungwa paunenge uchigadzira uye wozobvisa zvakakanganisika nemaitiro ekubvisa.
2. Kuchena kwepamusoro
Usati waenderera mberi ne nickel plating, guruva, mafuta, kana sipo yakagadzirwa ne saponification yemafuta nealkaline cleaner inoda kubviswa.Kana kucheneswa kwepamusoro kukasaitwa nemazvo, dhizaini yeNickel inogona kupera kana kukuvadzwa mushure menguva yakati.
3. PH kukosha
Kuchengeta kukosha kwePH kwakakosha pakuita nickel yunifomu uchishandisa nzira isina magetsi.Chikero chePH chinofanira kuva pakati pe3.8 ne5. Mukugadzirisa, zvinotarisirwa kuti pH inowanzokwira nekufamba kwenguva, saka stabilizer uye buffer mhinduro dzinofanira kushandiswa kuchengetedza PH yakagadzikana munguva yose yekurapa.
Sezvo iyo PH inokwira, mamwe maion hydroxide anoumbwa, ayo anobatana neiyo nickel ions uye kugadzira nickel hydroxide, ine ruvara rwegirini.
4. Iko kusanganiswa kweNickel ion
Mushonga wemunyu unoshandiswa munzvimbo yekurapa ndeye nickel ion sosi yakaiswa pane substrate pamusoro.Naizvozvo, kana iyo nickel ion concentration yakaderera, iyo plating process inononoka.Nekudaro, iyo yakanyanya-yakanyanya-yakanyanya kuiswa inoiswa nekukurumidza, asi iyo deposition ichave isina-uniform.Iyo yakajairwa huwandu hweiyo nickel concentration iri pakati20 uye 45 g / l.
5. Tembiricha
Kupisa kwekugezera kugeza kunoda kuva pakati70 uye 900C.Sezvo tembiricha inokwira, zvimwe zvinhu zvinonhuhwirira zvezvinowedzera zvinoputika, zvinoda nguva yakawanda yekuisa.
Zvakanakira
Kufanana nedzimwe nzira dzekuputira uye dzepamusoro dzekupedzisa, iyo yakakosha mukana zvikamu zvakavharwa uye zvigadzirwa zvinova ngura zvinodzivirira uye zvinomira zvakakomba zvakatipoteredza.Asi, kunze kweizvozvo, electroless nickel plating ine zvimwe zvakawanda zvakanaka.Ngatitarisei mamwe mabhenefiti akakosha mune zvakadzama.
Mutengo wakaderera
Chimwe chezvinhu zvinodhura muplating finish approach ndiyo mutengo wemagetsi.Nekudaro, sezvo electroless nickel plating isingadi sosi yemagetsi, inodhura-inoshanda pane dzimwe nzira, senge zinc plating.
Uniform coating
Electroless nickel plating inoguma mukupfeka yunifomu pane substrate surface.Tembiricha, kukosha kwePH yekugezesa yekugezesa, kuwanda kwenickel ion, nguva yekurapa, uye zvimwe zvinhu zvakawanda zvese zvinogona kudzorwa kuti uwane ukobvu hunodiwa hwenickel plating.
Dimensional consistency
Nekuti kusvika ku5-micron plating ukobvu inogoneka, haina kukanganisa kushivirira kunodiwa pazvikamu.
Kuoma
Iyo yekugezesa yekugezera ye phosphorous yemukati inopesvedzera zvikamu zvakapfava 'kuomarara.Yakaderera phosphorus mazinga anowedzera kuomarara uku ichideredza kushorwa kweiyo plating layer.
Kugadziriswa kwepasi kudiki
Electroless nickel plating zvakare inobatsira mukugadzirisa madiki madiki pane substrate pamusoro.Naizvozvo, zvinogona kubatsira zvakanyanya kuisa maplate nooks, crannies, uye mapofu maburi ane yunifomu ukobvu.
Aesthetic uye zvimwe zvinobatsira
Iyo yero-chena ruvara rwe nickel plating inopa inokwezva inoyevedza runako kune iyo pats uye zvigadzirwa.Mukuwedzera, hazvina kunyanya kuoma.Izvo hazvidi yakaoma sefa process.Mune mamiriro anhasi, otomatiki michina inowanikwa muindasitiri yekugadzira, zvichiita kuti zvive nyore kudzora maitiro.
Applications
Iyo electroless nickel plating process inobatsira kune akasiyana maindasitiri kuita kuti zvikamu zvawo zvigadzirise uye zvigare.Kutevera ndiwo maindasitiri akakosha uko nickel plating inoshandiswa;
| SN | Indasitiri | Zvikamu zvinoshanda | Chii chinoita? |
| 1 | Aerospace | mavharuvhu, pistons, injini shafts akavhara pamusoro, injini mounts, compressor blades, uye zvimwe kubhururuka-akakosha zvikamu. | Iyo ine yakanakisa kupfeka kuramba, corrosion resistance, makemikari kuramba, uye lubricity, iyo yakakosha kune aerospace zvikamu zvinoda dhigirii yepamusoro yekurongeka kwenguva yakareba. |
| 2 | Automotive | Mapistoni, masilinda, magiya, shafts, mafuta ejekiseni system, rivets, thrust transmitters, knuckle pini, imba, uye zvimwe zvakawanda zvinhu. | Ipa kudzivirirwa kwekupfeka uye kusagadzikana kwekuora |
| 3 | Hardware | Zvigadziriso zvekugezera, Doorknob, inobata Piping, uye zvimwe zvakawanda. | Corrosion resistance |
| 4 | Zvemagetsi & Zvemagetsi | Kuvhara midziyo yakasiyana-siyana, Kupisa kunyura, hard drive disks, Akadhindwa edunhu mabhodhi | Dziviriro kubva mukuora uye exposer yezvakatipoteredza |
| 5 | Mafuta & gasi | Mavharuvhu, pombi, pombi fittings, matangi ekuchengetera, nezvimwe | Dziviriro kubva mukuora uye zvakatipoteredza & kuratidzwa kwemakemikari. |
Mhedziso
Electroless nickel plating inzira yakasarudzika yekupedzisa pamusoro pezvinhu zvakawanda, zvinosanganisira simbi, mhangura, bhuronzi, aruminiyamu, plastiki, uye zvimwe zvakawanda.Nickel plating inovandudza kusimba nekupa yakanakisa corrosion kuramba pane substrate pamusoro.Pamusoro pezvo, nekuti Nickel ine inopenya yero chena ruvara, inopa inokwezva inoyevedza runako.Uye zvakare, iyo plating inogona kuitwa kana isina electrolysis, tarisa mutsauko uripoElectroplating uye Electro-shoma plating.
Nekuti kune yakawanda yemakemikari uye inokonzeresa maitiro mukuita, electroless nickel plating inogona kuvhiringa vanhu vazhinji, kunyanya avo vasinaruzivo rwehunyanzvi hweinjiniya chemistry.Zvisinei, panoProleanHub, mainjiniya edu uye matekinoroji akashanda pamusoro pekupedzisa tekinoroji, kusanganisira electroless nickel plating, kweanopfuura makore gumi.Naizvozvo, ivo vanozonzwisisa yakakodzera makemikari kuumbwa uye nzira kana iwe uchinge watsanangura zvaunoda uye mashandisiro.
FAQ's
Chii chinonzi electroless nickel plating?
Ndiyo imwe yenzira dzepamusoro dzekupedzisa iyo dhizaini yeNickel inoiswa pane substrate nenzira yecatalytic kemikari maitiro & pasina kushandisa magetsi.
Ndeapi maviri ekutanga mhinduro anoshandiswa mu electroless nickel plating?
Mushonga wemunyu une nickel ions & Reducing agent ndiwo maviri ekutanga makemikari mhinduro anoshandiswa mukuita.
Ndezvipi zvinhu zvinonyanya kuvharwa neelectroless nickel plating?
Iyi nzira inowanzoshandiswa kupfeka alloy simbi, simbi isina tsvina, aluminium mhangura, ndarira, bhuronzi, uye mapurasitiki.
Ndezvipi zvinhu zvinokanganisa kunaka kwe nickel plating?
Tembiricha & PH yekugezesa yekugezera, Nguva yekurapa, kuchena kweiyo substrate pamusoro, uye kusungirirwa kweNickel ion mumhinduro ndizvo zvinhu zvakakosha zvinopesvedzera mhedzisiro yeplating.
Nguva yekutumira: Aug-05-2022