Chrome plated simbi machubhudzakaputirwa nejira resimbi pamusoro pesimbi pombi simbi kuburikidza electroplating.Icho chinonyanya kukosha chinangwa chechromium plated simbi pombi kudzivirira.Chromium plated simbi mapaipi ane yakanaka kugadzikana kwemakemikari uye haaite mualkali, sulfides, nitric acid, uye akawanda organic acids.Chromium plated simbi mapaipi anogona kunyungudika muhydrochloride asidhi (yakadai sehydrochloride acid) uye inopisa sulfuric acid.Kechipiri, chromium plating ine yakanaka inodzivirira kupisa, uye chromium plated simbi pombi chete oxidize uye discolor kana tembiricha yakakura kupfuura 500 madhigirii Celsius.Uyezve, friction coefficient yake, kunyanya yakaoma friction coefficient, ndiyo yakaderera pakati pemasimbi ese, uye chrome plated simbi mapaipi ane yakanakisa kupfeka kuramba.Muchikamu chechiedza chinooneka, kugona kuratidza kwechromium kunosvika makumi matanhatu neshanu muzana, pakati pesirivha (88%) uye nickel (55%).Chromium haichinje ruvara, uye chrome yakanamirwa simbi mapaipi anogona kuchengetedza kugona kwavo kuratidza kwenguva yakareba kana ikashandiswa, zviri nani pane sirivheri uye nickel.Kune marudzi matatu e chrome plated process.
.Kuti uwane zvinangwa zvekudzivirira, yakaringana gobvu yepakati musara inofanira kutanga yakaputirwa pazinc yakavakirwa kana simbi substrate, uyezve inopenya yepakati mutsetse we 0.25-0.5 inofanira kuiswa pamusoro payo μ Thin layer chromium yem.Maitiro anowanzoshandiswa anosanganisira Cu / Ni / Cr, Ni / Cu / Ni / Cr, Cu Sn / Cr, etc. Mushure mekupenya pamusoro pechigadzirwa nekushongedza chromium plating, sirivha yebhuruu yegirazi luster inogona kuwanikwa.Haishanduki ruvara mushure mekugara kwenguva refu kumhepo.Rudzi urwu rwekupfekedza runoshandiswa zvakanyanya kudzivirira uye kushongedzwa kwezvinhu zvakaita semotokari, mabhasikoro, michina yekusona, mawachi, zviridzwa uye zvemazuva ese.Iyo yakakwenenzverwa yekushongedza chromium layer ine yakakwira ratidziro kugona kuvhenekera uye inogona kushandiswa seyakajeka.Kuisa micro pores kana microcracks ye chromium pane yakawanda-layer nickel inzira yakakosha yekudzikisa huwandu hwese hwekuputira uye kuwana yekushongedza sisitimu ine yakakwirira corrosion inodzivirira.Iyo zvakare kutungamira kutungamira kwemazuva ano electroplating maitiro.
2. Hard chromium (kupfeka-inodzivirira chromium) plating ine kuomarara kwakanyanya uye kusapfeka, izvo zvinogona kuwedzera hupenyu hwesevhisi yezvishandiso, sekucheka nekudhirowa maturusi, kudzvanya nekukanda molds emhando dzakasiyana siyana, mabearings, shafts, geji, magiya. , nezvimwewo, uye inogonawo kushandiswa kugadzirisa kushivirira kwezvikamu zvakasakara.Ukobvu hwekaoma chromium plating kazhinji 5-50 μ m.Inogonawo kugadziriswa maererano nezvinodiwa, zvimwe zvakakwirira se 200-800 μ M. Hard chromium plating pazvikamu zvesimbi haidi kuvhara kwepakati.Kana paine zvakakosha zvinodikanwa zvekuramba corrosion, akasiyana epakati machira anogona kushandiswa zvakare.
3. The milky white chromium plating layer ichena yemukaka, ine kupenya kwakaderera, kusimba kwakanaka, kuderera kweporosity, uye ruvara rwakapfava.Kuomarara kwayo kwakadzikira kupfuura kwechromium yakaoma uye yekushongedza chromium, asi ine kukwirira kwekuora, saka inowanzoshandiswa mukuyera maturusi uye mapaneru emidziyo.Kuti ivandudze kuoma kwayo, dhizaini yechromium yakaoma, inozivikanwawo seyakapetwa kaviri chromium coating, inogona kupfekedzwa pamusoro peiyo milky chena coating, iyo inosanganisa maitiro eese ari maviri mukaka chena chromium coating uye yakaoma chromium coating.Inowanzo shandiswa pakuputira zvikamu zvinoda zvese kupfeka kusagadzikana uye kusagadzikana nekuora.
4. Porous chromium plating (porous chromium) inoshandisa hunhu hwekutsemuka kwakanaka muchromium layer pachayo.Mushure mekuputira chromium yakaoma, mechanic, makemikari, kana electrochemical porosity kurapwa kunoitwa kuti iwedzere kudzika uye kuwedzera iyo crack network.Iyo yepamusoro yechromium layer yakafukidzwa nehupamhi grooves, iyo isingangove nehunhu hwekupfeka-inodzivirira chromium, asi zvakare inochengetedza zvinobudirira midhiya yekuzora, inodzivirira kusashanda kwemafuta, uye inovandudza kupokana uye kupfeka kuramba kwenzvimbo yebasa.Inowanzo shandiswa kuputira pamusoro peSliding friction parts pasi pekumanikidzwa kwakanyanya, senge kamuri yemukati yekupisa injini cylinder barrel, piston ring, nezvimwe.
⑤ Kuisa dema chromium dema chromium coating ine yunifomu inopenya, kushongedza kwakanaka, uye kutsakatika kwakanaka;Kuoma kwacho kunenge kwakakwirira (130-350HV), uye kupikisa kupfeka kunowedzera 2-3 nguva yakakwirira kudarika iyo nickel yakajeka pasi pehupamhi hwakafanana;Kuramba kwayo kwekuora kwakafanana neyakajairwa chromium plating, kunyanya zvichienderana nekukora kweyepakati layer.Good kupisa kuramba, hapana discoloration pazasi 300 ℃.Iyo dema chromium layer inogona kuvharwa zvakananga pamusoro pesimbi, mhangura, nickel, uye simbi isina tsvina.Kuvandudza corrosion kuramba uye yekushongedza mhedzisiro, mhangura, nickel, kana mhangura tin alloy inogona kushandiswa seyakadzika pasi, uye dema chromium coating inogona kuputirwa pamusoro payo.Black chromium coating inowanzo shandiswa kupfeka dziviriro uye kushongedzwa kwezvikamu zvezviridzwa zvendege uye Optical chiridzwa, solar simba absorption mapaneru uye zvinodiwa zvezuva nezuva.
Nguva yekutumira: Jul-02-2023