Kusiyana kwa Galvanizing, Cadmium Plating, Chromium Plating, ndi Nickel Plating of Steel Pipe Round Steel

Kodi pali kusiyana kotani pakati pa plating zinki, cadmium plating, chromium plating, ndi nickel plating wa chitsulo chitoliro ndizitsulo bar?

1.Galimoto

Maonekedwe: Zinc imakhala yokhazikika mumpweya wowuma ndipo siyisintha mtundu mosavuta.M'mlengalenga wamadzi ndi chinyezi, umakhudzidwa ndi okosijeni kapena carbon dioxide kupanga ma oxides kapena mafilimu a alkaline zinc carbonate, zomwe zingalepheretse zinc kuti isapitirire kukhala oxidize ndikugwira ntchito yoteteza.Zinc imakhudzidwa kwambiri ndi dzimbiri mu ma acid, alkalis, ndi sulfide.Zopaka zamagalasi nthawi zambiri zimakhala ndi chithandizo cha passivation.Pambuyo podutsa mu chromic acid kapena chromate solution, filimu ya passivation yomwe imapangidwa simakhudzidwa mosavuta ndi mpweya wonyowa, kumawonjezera kwambiri mphamvu yake yotsutsa dzimbiri.Pazigawo za masika, mbali zoonda-mipanda (makoma a khoma <0.5m), ndi zitsulo zomwe zimafuna mphamvu zamakina apamwamba, kuchotsa haidrojeni kuyenera kuchitidwa, pamene mbali zamkuwa ndi zamkuwa sizingafune kuchotsa hydrogen.Zinc plating ili ndi mtengo wotsika, kukonza kosavuta, komanso zotsatira zabwino.Kuthekera kwa zinki kumakhala koyipa, kotero kuti zinc plating ndi zokutira za anodic pazitsulo zambiri.Kugwiritsa ntchito: Galvanizing imagwiritsidwa ntchito kwambiri mumlengalenga komanso malo ena abwino.Koma sayenera kugwiritsidwa ntchito ngati gawo la mikangano

2.Cadmium plating

Mawonekedwe: Pazigawo zomwe zimakumana ndi mpweya wa m'nyanja kapena m'madzi am'nyanja, komanso m'madzi otentha opitilira 70 ℃, plating ya cadmium imakhala yokhazikika, imalimbana ndi dzimbiri, mafuta abwino, ndipo amasungunuka pang'onopang'ono mu dilute hydrochloric acid.Komabe, imasungunuka kwambiri mu asidi wa nitric, osasungunuka mu alkali, ndipo ma oxide ake sasungunukanso m'madzi.Chophimba cha Cadmium ndi chofewa kuposa zokutira zinki, chokhala ndi brittleness yochepa ya haidrojeni komanso kumamatira mwamphamvu.Kuphatikiza apo, pansi pamikhalidwe ina ya electrolysis, zokutira za cadmium zopezeka ndi zokongola kuposa zokutira zinki.Koma mpweya wopangidwa ndi cadmium ukasungunuka ndi wapoizoni, ndipo mchere wosungunuka wa cadmium ulinso wapoizoni.Nthawi zambiri, cadmium ndi zokutira za cathodic pazitsulo, ndi zokutira za anodic mumlengalenga wam'madzi komanso kutentha kwambiri.Ntchito: Amagwiritsidwa ntchito kwambiri kuteteza mbali zina kuti zisawonongeke ndi mlengalenga zomwe zimadza chifukwa cha madzi a m'nyanja kapena mchere wofananira nawo komanso nthunzi wamadzi am'nyanja.Magawo ambiri oyendetsa ndege, kuyenda, ndi mafakitale amagetsi, akasupe, ndi zida za ulusi zimakutidwa ndi cadmium.Itha kupukutidwa, phosphated, ndi kugwiritsidwa ntchito ngati gawo lapansi la utoto, koma silingagwiritsidwe ntchito ngati tebulo.

3.Chrome plating

Makhalidwe: Chromium imakhala yokhazikika mumlengalenga, alkaline, nitric acid, sulfide, carbonate solutions, ndi organic acids, ndipo imasungunuka mosavuta mu hydrochloric acid ndi hot concentrated sulfuric acid.Pansi pa mphamvu yachindunji, ngati chromium wosanjikiza imagwiritsidwa ntchito ngati anode, imasungunuka mosavuta mu caustic soda solution.Chosanjikiza cha chromium chimakhala ndi zomatira zolimba, kuuma kwakukulu, 800-1000V, kukana kuvala bwino, kuwunikira kolimba, komanso kukana kutentha kwakukulu.Sichimasintha mtundu pansi pa 480 ℃, chimayamba kukhala oxidize pamwamba pa 500 ℃, ndipo chimachepetsa kwambiri kuuma pa 700 ℃.Kuipa kwake ndikuti chromium ndi yolimba, yofewa, ndipo imakonda kuthamangitsidwa, yomwe imawonekera kwambiri ikakumana ndi katundu wosiyanasiyana.Ndipo ili ndi porosity.Metal chromium imadutsa mosavuta mumlengalenga kuti ipange filimu ya passivation, motero kusintha kuthekera kwa chromium.Chifukwa chake, chromium imakhala zokutira kwa cathodic pachitsulo.Kugwiritsa ntchito: Kuyika chromium pamwamba pazigawo zachitsulo monga anti-corrosion wosanjikiza sikoyenera, ndipo nthawi zambiri kumachitika kudzera muzitsulo zosanjikiza zambiri (ie copper plating → faifi tambala → chromium) kuti akwaniritse cholinga chopewa dzimbiri ndi kukongoletsa.Pakalipano, amagwiritsidwa ntchito kwambiri popititsa patsogolo kukana kwa magawo, kukonza miyeso, kuwala kowala, ndi kuunikira kokongoletsera.

nickel plating

Makhalidwe: Nickel imakhala ndi kukhazikika kwamankhwala abwino m'mlengalenga ndi njira ya alkaline, sichimasintha mosavuta, ndipo imangokhala oxidized pa kutentha pamwamba pa 600 ° C. Imasungunuka pang'onopang'ono mu sulfuric acid ndi hydrochloric acid, koma imasungunuka mosavuta mu dilute nitric acid.Ndiosavuta kuphatikizira mu nitric acid wokhazikika motero imakhala ndi kukana kwa dzimbiri.Chophimba cha Nickel chimakhala cholimba kwambiri ndipo ndichosavuta kugwiritsa ntchito.

New Gapower Metal Kampani imagwira ntchito popereka chrome yokutidwa, malata, mapaipi achitsulo a faifi ndi zitsulo zozungulira.Kampaniyo ili ndi matani 20000 a mapaipi ozungulira azitsulo.Titha kupereka mitundu yosiyanasiyana ya mipope yachitsulo, mipiringidzo yozungulira, mapaipi achitsulo opukutidwa, ndi ma shaft opukutidwa, kuphatikiza miyezo yaku America, Germany, Japan, ndi European.Takulandilani kuti mufunse.