Nickel plating - daim ntawv thov ntawm nickel plating rau saum npoo ntawm cov khoom lag luam. Nickel adheres zoo rau steel thiab nws cov alloys, tooj liab, zinc thiab txhuas. Zuj zus - rau cov khoom lag luam ua los ntawm manganese, titanium, tungsten thiab molybdenum. Nickel plating muab qhov zoo nkauj rau cov zoo nkauj, tiv thaiv nws ntawm kev xeb thiab ua rau hnav tsis kam.
Tsim nyog
- - ntawv txhuam ntoo;
- - muaj pes tsawg leeg degreasing;
- - sulfuric acid;
- - lub thawv ntim zoo rau kev da dej electrolytic;
- - chromic anhydride;
- - cov hlau txhuas txhuas - tsis pub tsawg dua 2;
- - roj teeb tsheb.
Cov Lus Qhia
Kauj ruam 1
Npaj cov khoom rau cov plated npib tsib xee. Xuab zeb tus nplaim kom zoo nrog av nplaum. Yog tias npib tsib xee plating yog rau cov hom phiaj zoo nkauj, txhuam cov tshooj rau daim iav tiav. Siv cov lus sib xyaw ntawm cov lus sib xyaw zoo nkauj ntsev thiab kua txob los ntxuav cov tooj liab thiab nws cov alloys.
Kauj ruam 2
Npaj ib qho ntawm cov degreasing tebchaw. Cov thawj muaj pes tsawg leeg yog cov kua txiv qaub 35 grams rau ib lub taub, poov tshuaj caustic - 10 grams rau ib lub khob, kua iav - 3 gram ib liter dej. Qhov thib ob sib tov - caustic sis dej qab zib lossis poov tshuaj - 75 grams tauj ib liter, kua iav - 20 grams tauj ib liv dej. Qhov thib peb muaj pes tsawg leeg sib xyaw yog freshly slaked txiv qaub 350 grams ib liter dej. Tsis hais txog ntawm cov tshuaj npaj tau, lub sijhawm ua tsis zoo yuav tsum yog tsawg kawg 1 teev, qhov kub ntawm qhov sib tov yuav tsum yog 90 degrees.
Kauj ruam 3
Tom qab degreasing, yaug ib feem nrog dej sov thiab npaj ib qho electrolytic da dej nrog sulfuric acid. Txhawm rau ua qhov no, nyob rau hauv ib qho txha hniav laus lossis khob ntim, dilute chromic anhydride nyob rau hauv tus nqi ntawm 400 grams tauj ib liter thiab muaj kua sulfuric acid nyob rau hauv tus nqi ntawm 4 gram rau ib liter dej. Nqa cov dej kub sib tov mus txog 60 degrees. Tso cov hlau txhuas hauv chaw da dej nyob ib ncig ntawm qhov chaw ua haujlwm thiab txuas rau lub davhlau ya nyob twg zoo. Txuas cov khoom nws tus kheej mus rau qhov xaus tsis zoo. Tseem ceeb: qhov luaj li cas ntawm cov hlau lead txhuas yuav tsum yog 1.5-2 npaug loj dua qhov feem ntawm cov xim npib tsib xee.
Kauj ruam 4
Kwv yees li lub sijhawm rau npib tsib xee plating yog 1-2 teev. Tom qab qhov kawg ntawm cov txheej txheem, yaug cov khoom kom huv nrog dej sov thiab so nrog ib daim ntaub qhuav lossis daim ntaub. Ua kev polishing ntxiv yog tsim nyog.
Kauj ruam 5
Yog tias rau qee qhov laj thawj nws tsis tuaj yeem ua nickel plating hauv chav dej electrolytic, siv lwm txoj kev sib txawv. Tom qab ua tiav cov haujlwm npaj rau kev sib tsoo thiab degreasing cov khoom, npaj cov tshuaj los ntawm 10% tov ntawm zinc chloride thiab nickel sulfate. Cov tshuaj tiav tas yuav tsum muaj cov xim ntsuab sib sib zog nqus. Lub khob ntxuav npib tsib xee yuav tsum tsuas yog txhav tag. Nqa cov dej sib tov rau ib lub rhaub thiab rhaub cov feem hauv nws li 1-2 teev. Tom qab ntawd yaug cov khoom nrog chalk dej (75 grams ntawm chalk ib liter dej) thiab so qhuav.
