Chrome yokutidwa ndi zitsulo machubundi yokutidwa ndi wosanjikiza zitsulo pamwamba pa zitsulo chitoliro zitsulo kudzera electroplating.Cholinga chofunikira kwambiri cha mapaipi achitsulo okhala ndi chromium ndi chitetezo.Mapaipi achitsulo opangidwa ndi chromium ali ndi kukhazikika kwa mankhwala ndipo samakhudzidwa ndi alkali, sulfides, nitric acid, ndi ma organic acid ambiri.Mipope yachitsulo ya chromium imatha kusungunuka mu hydrochloride acid (monga hydrochloride acid) ndi asidi wotentha wa sulfuric.Kachiwiri, plating ya chromium imakhala yabwino kukana kutentha, ndipo mapaipi achitsulo opangidwa ndi chromium amangotulutsa okosijeni komanso kusungunuka kutentha kukakhala kopitilira madigiri 500 Celsius.Kuphatikiza apo, kugunda kwake kokwanira, makamaka kukangana kowuma, ndikotsika kwambiri pakati pa zitsulo zonse, ndipo mapaipi achitsulo okhala ndi chrome amakhala ndi kukana kwamphamvu kwambiri.Pakuwunika kowoneka bwino, mphamvu yowunikira ya chromium ndi pafupifupi 65%, pakati pa siliva (88%) ndi faifi tambala (55%).Chromium sichisintha mtundu, ndipo mapaipi achitsulo opangidwa ndi chrome amatha kukhalabe ndi mphamvu zowunikira kwa nthawi yayitali akagwiritsidwa ntchito, zomwe ndi zabwino kuposa siliva ndi faifi tambala.Pali mitundu itatu ya njira zopangira chrome.
1. Chitetezo - Chitetezo Chokongoletsera Chromium Plating - Chokongoletsera Chromium Plating, chomwe chimadziwika kuti Decorative Chromium, chili ndi zokutira zoonda komanso zowala zomwe nthawi zambiri zimagwiritsidwa ntchito ngati gawo lakunja la multilayer electroplating.Kuti mukwaniritse zolinga zodzitchinjiriza, wosanjikiza wokwanira wapakatikati uyenera kukutidwa poyamba pazinki kapena gawo lapansi lachitsulo, kenako wosanjikiza wowala wapakati wa 0.25-0.5 uyenera kukutidwa pamwamba pake μ Thin wosanjikiza chromium wa m.Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo Cu / Ni / Cr, Ni / Cu / Ni / Cr, Cu Sn / Cr, etc. Pambuyo popukuta pamwamba pa mankhwala ndi zokongoletsera za chromium plating, galasi la buluu la siliva likhoza kupezeka.Sasintha mtundu atakhala nthawi yayitali mumlengalenga.Kupaka kwamtunduwu kumagwiritsidwa ntchito kwambiri poteteza ndi kukongoletsa zinthu monga magalimoto, njinga, makina osokera, mawotchi, zida, ndi zida zatsiku ndi tsiku.Chosanjikiza chokongoletsera cha chromium chimakhala ndi mphamvu yowunikira kwambiri ndipo chitha kugwiritsidwa ntchito ngati chowunikira.Kuyika ma pores ang'onoang'ono kapena ma microcracks a chromium pa nickel yamitundu yambiri ndi njira yofunikira yochepetsera makulidwe onse a zokutira ndikupeza dongosolo lokongoletsa lomwe lili ndi chitetezo chambiri chambiri.Ndiwonso njira yachitukuko ya njira zamakono za electroplating.
2. Chromium yolimba (chromium yosamva kuvala) imakhala ndi kuuma kwambiri komanso kukana kuvala, komwe kumatha kukulitsa moyo wautumiki wa zida zogwirira ntchito, monga zida zodulira ndi kujambula, kukanikiza ndi kuponyera nkhungu zamitundu yosiyanasiyana, mayendedwe, ma shafts, geji, magiya. , etc., ndipo angagwiritsidwenso ntchito kukonza tolerances dimensional wa ziwalo zong'ambika.Makulidwe a plating yolimba ya chromium nthawi zambiri amakhala 5-50 μ m.Zingathenso kutsimikiziridwa molingana ndi zosowa, zina mpaka 200-800 μ M. Kupaka chromium yolimba pazigawo zachitsulo sikufuna zokutira zapakati.Ngati pali zofunikira zapadera zotsutsana ndi dzimbiri, zokutira zosiyanasiyana zapakatikati zitha kugwiritsidwanso ntchito.
3. Chophimba cha chromium choyera chamkaka chimakhala choyera ngati chamkaka, chonyezimira chochepa, cholimba bwino, chochepa kwambiri, ndi mtundu wofewa.Kulimba kwake kumakhala kotsika kuposa chromium yolimba ndi chromium yokongoletsera, koma imakhala ndi kukana kwa dzimbiri, choncho imagwiritsidwa ntchito kwambiri poyezera zida ndi mapanelo a zida.Pofuna kukonza kuuma kwake, chromium yolimba, yomwe imadziwikanso kuti yokutira ya chromium iwiri, imatha kukutidwa pamwamba pa zokutira zoyera zamkaka, zomwe zimaphatikiza mawonekedwe a zokutira zoyera za chromium ndi zokutira zolimba za chromium.Nthawi zambiri amagwiritsidwa ntchito popaka zida zomwe zimafuna kukana kuvala komanso kukana dzimbiri.
4. Porous chromium plating (porous chromium) amagwiritsa ntchito mawonekedwe a ming'alu yabwino mu chromium wosanjikiza wokha.Pambuyo plating molimba chromium, makina, mankhwala, kapena electrochemical porosity mankhwala ikuchitika kuti mozama ndi kukulitsa mng'alu maukonde.Pamwamba pa chromium wosanjikiza wophimbidwa ndi mizere yotakata, yomwe sikuti ili ndi mawonekedwe a chromium osamva kuvala, komanso imasunga bwino ma media opaka mafuta, imalepheretsa kugwira ntchito kopanda mafuta, ndikuwongolera kukangana ndi kuvala kwa malo ogwirira ntchito.Nthawi zambiri amagwiritsidwa ntchito plating pamwamba pa Sliding mikangano mbali pansi pa kukanikiza kwambiri, monga chipinda chamkati cha mkati kuyaka injini yamphamvu mbiya, piston mphete, etc.
⑤ Kupaka utoto wakuda wa chromium wakuda wa chromium uli ndi kuwala kofanana, kukongoletsa bwino, ndi kutha bwino;Kuuma kumakhala kokwera kwambiri (130-350HV), ndipo kukana kuvala kumakhala 2-3 nthawi zambiri kuposa nickel yowala pansi pa makulidwe omwewo;Kukana kwake kwa dzimbiri ndi kofanana ndi plating wamba ya chromium, makamaka kutengera makulidwe a gawo lapakati.Good kutentha kukana, palibe kusinthika m'munsimu 300 ℃.Chosanjikiza chakuda cha chromium chimatha kukutidwa mwachindunji pamwamba pa chitsulo, mkuwa, faifi tambala, ndi chitsulo chosapanga dzimbiri.Kupititsa patsogolo kukana kwa dzimbiri ndi kukongoletsa, mkuwa, faifi tambala, kapena aloyi yamkuwa angagwiritsidwenso ntchito ngati wosanjikiza pansi, ndipo zokutira zakuda za chromium zitha kukutidwa pamwamba pake.Kupaka kwa chromium yakuda nthawi zambiri kumagwiritsidwa ntchito kutikita chitetezo ndi kukongoletsa mbali za zida zowulutsira ndege ndi chida cha Optical, mapanelo oyamwa mphamvu ya dzuwa ndi zofunikira zatsiku ndi tsiku.
Nthawi yotumiza: Jul-02-2023