Iityhubhu zentsimbi zeChromezigqunywe ngomaleko wentsimbi kumphezulu wentsimbi yombhobho wentsimbi ngokusebenzisa i-electroplating.Eyona njongo ibalulekileyo yemibhobho yentsimbi ecwecwe ngechromium kukukhusela.Imibhobho yentsimbi ecwecwe ngeChromium inozinzo oluhle lweekhemikhali kwaye ayisebenzi kwi-alkali, i-sulfides, i-nitric acid, kunye neninzi ye-organic acids.Imibhobho yentsimbi ecwecwe ngeChromium inokunyibilika kwi-hydrochloride acid (efana ne-hydrochloride acid) kunye ne-asidi ye-sulfuric eshushu.Okwesibini, ukucwenga kwechromium kunokumelana nobushushu obulungileyo, kwaye imibhobho yentsimbi ecwecwe ngechromium ikhupha ioksijini kuphela kwaye itshintshe umbala xa ubushushu bungaphezu kwama-500 ngokukaCelsius.Ngaphezu koko, i-coefficient yakhe yokukhuhlana, ngakumbi i-coefficient eyomileyo yokukhuhlana, yeyona iphantsi kuzo zonke iintsimbi, kwaye imibhobho yentsimbi ene-chrome inokumelana okugqwesileyo kokunxiba.Kuluhlu lokukhanya olubonakalayo, amandla okubonakalisa i-chromium malunga ne-65%, phakathi kwesilivere (88%) kunye ne-nickel (55%).I-Chromium ayitshintshi umbala, kwaye imibhobho yensimbi ene-chrome inokugcina amandla abo okubonakalisa ixesha elide xa isetyenziswa, into engcono kunesilivere kunye ne-nickel.Kukho iintlobo ezintathu zeenkqubo ze-chrome plated.
1. Ukukhuselwa - uKhuseleko lweChromium yokuhlobisa - i-Decorative Chromium Plating, eyaziwa ngokuba yi-Decorative Chromium, inombala obhityileyo kunye oqaqambileyo oqhelekileyo osetyenziswa njengoluhlu lwangaphandle lwe-multi-layer electroplating.Ukufezekisa iinjongo zokukhusela, umaleko ophakathi okwaneleyo kufuneka uqale ufakwe kwi-zinc esekelwe okanye i-substrate yentsimbi, kwaye emva koko umaleko ophakathi oqaqambileyo we-0.25-0.5 kufuneka ubekwe phezu kwawo μ Thin layer chromium of m.Iinkqubo ezisetyenziswa ngokuqhelekileyo ziquka i-Cu / Ni / Cr, i-Ni / Cu / Ni / Cr, i-Cu Sn / Cr, njl. Emva kokupholisa umphezulu wemveliso nge-decorative chromium plating, i-silver blue mirror luster inokufumaneka.Ayiwutshintshi umbala emva kokuboniswa ixesha elide emoyeni.Olu hlobo lokwambatha lusetyenziswa kakhulu ekukhuseleni nasekuhombiseni amacandelo anjengeemoto, iibhayisekile, oomatshini bokuthunga, iiwotshi, izixhobo, kunye nehardware yemihla ngemihla.Umaleko ohonjisiweyo wechromium unekhono eliphezulu lokubonisa ukukhanya kwaye unokusetyenziswa njengesibonisi.Ukufakela i-micro pores okanye i-microcracks ye-chromium kwi-nickel ye-multi-layer yindlela ebalulekileyo yokunciphisa ubuninzi obupheleleyo bokugquma kunye nokufumana inkqubo yokuhlobisa kunye nokukhusela okuphezulu kwe-corrosion.Ikwayisikhokelo sophuhliso lweenkqubo zale mihla ze-electroplating.
2. I-chromium eqinile (i-chromium ekwaziyo ukunxiba) inobunzima obuphezulu kakhulu kunye nokunganyangeki, okunokwandisa ubomi benkonzo yezinto zokusebenza, ezifana nokusika kunye nezixhobo zokuzoba, ukucofa kunye nokuphosa ukubumba kwezinto ezahlukeneyo, iibheringi, i-shafts, iigeji, iigiya. , njl., kwaye ingasetyenziselwa ukulungisa ukunyamezela kwe-dimensional yeendawo ezigugileyo.Ubukhulu be-chromium yokucwenga eqinile ngokuqhelekileyo yi-5-50 μ m.Inokuphinda igqitywe ngokweemfuno, ezinye ziphezulu njenge-200-800 μ M. Ukufakwa kwe-chromium enzima kwiindawo zetsimbi ayifuni i-coating ephakathi.Ukuba kukho iimfuno ezikhethekileyo zokuxhathisa ukubola, iingubo ezahlukeneyo zokwaleka eziphakathi nazo zingasetyenziswa.
3. Umaleko wokucwenga wechromium omhlophe ubisi olumhlophe, unobukhazikhazi obuphantsi, ukuqina okuhle, ubuncinci be-porosity, kunye nombala othambileyo.Ubunzima bayo bungaphantsi kunobo bechromium enzima kunye ne-chromium yokuhombisa, kodwa inokumelana nokubola okuphezulu, ngoko isetyenziswa ngokuqhelekileyo kumlinganiselo wezixhobo kunye neepaneli zesixhobo.Ukuphucula ukuqina kwayo, umaleko wechromium eqinile, ekwabizwa ngokuba yi-double layer chromium coating, inokugqunywa kumphezulu we-milky white coating, edibanisa iimpawu zombini ezimhlophe ezimhlophe ze-chromium ukutyabeka kunye ne-chromium eqinile.Ihlala isetyenziselwa ukugquma iindawo ezifuna ukuxhathisa ukunxiba kunye nokumelana nomhlwa.
4. I-porous chromium plating (i-chromium ene-porous) isebenzisa iimpawu zokuqhekeka okulungileyo kwi-chromium layer ngokwayo.Emva plating chromium nzima, mechanical, khemikhali, okanye electrochemical porosity unyango lwenziwa ukuze nzulu ngakumbi kwaye banzi womnatha crack.Umphezulu womaleko wechromium ugutyungelwe ziigrooves ezibanzi, ezingenazo kuphela iimpawu zechromium engagugiyo, kodwa ikwagcina ngokufanelekileyo imidiya yokuthambisa, inqanda ukusebenza okungathanjiswanga, kwaye iphucula ukukhuhlana kunye nokunxitywa komphezulu womsebenzi.Ihlala isetyenziselwa ukubethelela umphezulu we-Sliding friction parts phantsi koxinzelelo olunzima, olufana negumbi langaphakathi le-injini ye-cylinder barrel, i-piston ring, njl.
⑤ Ukwaleka kwechromium emnyama emnyama ine-luster efanayo, ukuhonjiswa okuhle, kunye nokuphela okulungileyo;Ubunzima buphezulu (130-350HV), kwaye ukuxhatshazwa kokugqoka kuphindwe ngamaxesha angama-2-3 ngaphezu kwe-nickel ekhanyayo phantsi kobunzima obufanayo;Ukumelana nokubola kwayo kuyafana ne-chromium plating eqhelekileyo, ngakumbi kuxhomekeke kubunzima bomaleko ophakathi.Ukumelana nobushushu obuhle, akukho mbala ungaphantsi kwe-300 ℃.Umaleko omnyama wechromium unokugqunywa ngokuthe ngqo kumphezulu wentsimbi, ubhedu, i-nickel, kunye nentsimbi engatyiwayo.Ukuphucula ukuxhathisa kwe-corrosion kunye nesiphumo sokuhombisa, ubhedu, i-nickel, okanye i-alloy ye-tin yobhedu ingasetyenziselwa njengomgangatho ongezantsi, kunye nombala omnyama we-chromium unokugqithwa phezu kwawo.Ukugquma kwechromium emnyama ngokuqhelekileyo kusetyenziselwa ukugquma ukhuseleko kunye nokuhombisa iindawo zezixhobo zokubhabha kunye nesixhobo se-Optical, iiphaneli zokufunxa amandla elanga kunye nezinto eziyimfuneko zemihla ngemihla.
Ixesha lokuposa: Jul-02-2023