010203
1149 Barrel Ci Npib Kub Plating
cov lus piav qhia txog cov khoom
▪ Cov txheej txheem no muaj zog pov tau zoo heev, ua kom muaj kev sib npaug txawm tias nyob rau hauv cov duab geometries nyuaj thiab cov qhov tob. Lub da dej ruaj khov tau tswj hwm ntev ntev, nrog rau kev rhuav tshem tsawg kawg nkaus ntawm cov organic additives, uas pab txhawb rau kev zoo plating. Cov electrolyte formulation muaj cov tshuaj brighteners tshwj xeeb thiab cov neeg sawv cev leveling uas txhim kho lub zog micro-throwing, ua rau muaj qhov chaw du thiab ci ntsa iab.
▪ Cov txheej txheem no sib xws nrog ob qho tib si khib thiab lub thoob plating teeb tsa, muab kev ywj pheej hauv kev tuav ntau yam workpiece qhov ntau thiab tsawg thiab ntim. Lub dab dej ua haujlwm tau zoo hauv qhov kub dav, feem ntau ntawm 45 ° C txog 65 ° C, uas tuaj yeem hloov kho raws li qhov xav tau ntawm daim ntawv thov tshwj xeeb. Qib pH raug tswj hwm kom zoo hauv qhov ntau thiab tsawg, feem ntau ntawm 3.8 txog 4.5, kom ua kom zoo dua cov nqi tso tawm thiab cov khoom txheej.
▪ Qhov concentration ntawm cov nickel ions hauv cov tshuaj plating yog khaws cia rau hauv 70 txog 90 g/L, thaum cov chloride ions raug khaws cia ntawm 10 txog 20 g/L kom ntseeg tau tias anode corrosion thiab conductivity zoo. Kev siv cov high-purity nickel anodes, ua ke nrog cov hnab anode, txo qhov kev nkag mus ntawm cov khoom tsis huv thiab cov khoom me me rau hauv lub dab da dej.
▪ Cov txheej txheem suav nrog cov txheej txheem lim dej siab heev, feem ntau siv cov lim dej 5 txog 10 micron, kom tshem tawm cov khoom khov kho thiab tswj kom lub dab da dej ntshiab. Kev sim Hull cell tsis tu ncua yog ua los saib xyuas qhov kev ua haujlwm ntawm lub dab da dej thiab kho cov khoom ntxiv raws li qhov xav tau. Qhov ductility ntawm cov txheej nickel tso feem ntau tshaj 8%, raws li ntsuas los ntawm kev sim spiral contractometer, ua kom muaj kev ua tau zoo heev hauv kev ua haujlwm tom qab plating.
▪ Qhov nyuaj ntawm cov txheej no tuaj yeem hloov kho tau ntawm 250 txog 450 HV los ntawm kev kho cov kev ntsuas da dej thiab cov piv ntxiv, ua rau nws haum rau ntau yam kev siv hauv kev lag luam. Cov txheej txheem qhia tau tias muaj cov yam ntxwv zoo heev rau kev nplaum, nrog rau kev sim lub zog tev tawv tas li tshaj 8 N / mm². Qhov kev tiv thaiv xeb ntawm cov nyiaj npib tsib xee, raws li kev ntsuas ntsev tsuag, feem ntau tshaj 96 teev rau xeb dawb thiab 200 teev rau xeb liab thaum kaw kom zoo.
▪ Lub zog pov macro zoo kawg nkaus ntawm lub dab da dej, feem ntau tshaj 80% raws li ntsuas los ntawm Haring-Blum cell, ua kom muaj kev faib cov tuab ntawm txheej sib npaug. Cov txheej txheem no zoo tshwj xeeb rau cov khoom sib piv siab, nrog rau qhov sib txawv ntawm cov tuab feem ntau tsawg dua 15% thoob plaws ntawm cov khoom ua haujlwm. Qhov kev ntxhov siab sab hauv qis ntawm cov nyiaj tso cia, feem ntau qis dua 10 MPa raws li ntsuas los ntawm lub spiral contractometer, txo qhov kev pheej hmoo ntawm kev tawg lossis delamination.
▪ Cov txheej txheem no suav nrog cov txheej txheem saib xyuas lub sijhawm tiag tiag rau cov yam ntxwv tseem ceeb xws li kub, pH, thiab cov hlau concentration, kom ntseeg tau tias cov plating zoo sib xws. Kev siv cov organic additives siab heev nrog cov khoom tswj tus kheej pab txhawb rau lub neej da dej ntev, feem ntau tshaj 12 MTO (hlau turnovers) yam tsis muaj kev puas tsuaj loj hauv cov txheej txheem zoo. Cov txheej txheem no yog tsim los ua kom tau raws li cov qauv kev lag luam nruj, suav nrog ASTM B689 thiab ISO 1456 cov lus qhia rau electrodeposited nickel coatings.