Passivation - Njira Yochizira Pamwamba

Passivation - Njira Yochizira Pamwamba

Kusintha komaliza 08/29, nthawi yowerenga: 5mins

Zigawo pambuyo passivating ndondomeko

Imodzi mwazovuta zovuta za metallurgists, ndikuteteza zinthuzo kuti zisawonongeke ndi zodetsa zilizonse zazinthu zopangira monga machining, kupanga, ndi kuwotcherera zimapanga zinyalala, inclusions, oxides zitsulo, ndi mankhwala, mafuta ndi mafuta.Ndi izi, zikakumana ndi mpweya ndi madzi, zitsulo zambiri zimatha kuwonongeka.Izi zipangitsa kuti gawo lachitsulo likhale lopanikizika ndipo likhoza kukhala ndi zotsatira zowononga panthawi yopanga kapena pomaliza ntchito.Choncho, pakufunika kuteteza gawo lachitsulo ku zowonongeka izi ndi dzimbiri.Njira imodzi yotere ndichitsulo passivation, njira yoperekera wosanjikiza woonda komanso wofanana wa oxidekuwonjezera kukana dzimbiri, kukulitsa moyo wa gawo, kuchotsa kuipitsidwa pamwamba, kuchepetsa chiopsezo cha kuipitsidwa kwa gawo ndikukulitsa nthawi yokonza dongosolo.

Zimagwira ntchito bwanji?

Kuteteza zitsulo zosiyanasiyana zachitsulo kuti zisawonongeke, mchitidwe womaliza wa mankhwala opangidwa ndi mafakitale umagwiritsidwa ntchito kwambiri ngati njira ya post-fabrication yotchedwa Passivation.Pochita izi, ma okosijeni ochepa monga nitric ndi citric acid amagwiritsidwa ntchito.The exogenetic ufulu chitsulo, sulphides ndi zina particles yachilendo padziko akhoza kuchotsedwa ndi zidulo ndi amalenga okusayidi wosanjikiza kapena filimu amene adzakhala ngati chishango zoteteza.Izi zimachepetsa mwayi woti pakhale kusinthana kwamankhwala pakati pa zinthu zachitsulo ndi mpweya, zomwe zimateteza pamwamba pa dzimbiri popanda kusintha mawonekedwe ake.Mbali yofunika kwambiri ya njirayi ndi yakuti asidi sayenera kukhudza zitsulo zokha.

Masitepe a Passivating Process

Pali makamaka masitepe atatu mu njira passivating, amene adzalenga wathunthu woonda ndi yunifolomu okusayidi wosanjikiza pa zitsulo pamwamba.

Gawo 1: Kuyeretsa chigawo

The zitsulo mbali kuyeretsa mwachitsanzo, kuchotsa pamwamba mafuta mafuta, mankhwala kapena zinyalala zotsalira Machining ndi chiyambi cha passivation ndondomeko.Kuyeretsa chigawo kumayika gawo lofunika kwambiri pa ndondomekoyi, popanda sitepe iyi, zinthu zakunja pamwamba pazitsulo zidzachepetsa mphamvu ya passivation.

Khwerero 2: Kumiza mu Bafa la Acid

Kuchotsa tinthu tating'ono tachitsulo taulere pamwamba, kumizidwa kwa gawolo mumsamba wa asidi kumatsatira pambuyo poyeretsa.Pali njira zitatu zomwe zimagwiritsidwa ntchito panjira iyi

Gawo 3:Nitric Acid Bath

Njira yachikhalidwe yopititsira patsogolo ndi nitric acid, yomwe imagawanso mamolekyu a pamwamba pazitsulo bwino kwambiri.Komabe, chifukwa cha gulu lake ngati zinthu zowopsa, asidi wa nitric ali ndi zovuta zina.Imatulutsa mpweya wapoizoni womwe uli wowopsa kwa chilengedwe ndipo ungafunike nthawi yayitali yokonza ndikusamalira mwapadera.

Gawo 4:Nitric Acid yokhala ndi Sodium Dichromate Bath

Kuphatikizika kwa sodium dichromate mu nitric acid kumakulitsa njira yodutsamo ndi ma aloyi enaake.Njirayi ndi njira yocheperako, chifukwa sodium dichromate imakulitsa kuopsa kwa kusamba kwa nitric acid.

Citric Acid Bath

Kusamba kwa citric acid ndi njira yotetezeka kuposa nitric acid panjira yodutsa.Sichitulutsa mpweya wapoizoni, sichifuna kugwiridwa mwapadera komanso ndi njira yothandiza zachilengedwe.Kuphatikizika kwa citric acid passivation, kuyika pachiwopsezo cha kukula kwa organic ndi nkhungu, zomwe zavutikira kuti zivomerezedwe.M'zaka zaposachedwapa, zatsopano zathetsa mavutowa, zomwe zimapangitsa kuti zikhale zotsika mtengo.

Kuti abwezeretse kukana kwachitsulo kwachitsulo kuzinthu zake zopangira, mosasamala kanthu za njira yogwiritsira ntchito, kusamba kumeneku kumapanga mankhwala opangidwa pamwamba pa chigawocho.Izi zidzawonjezera filimu yopyapyala komanso yofanana ya filimu ya oxide yokhala ndi molekyulu yachitsulo pang'ono.

Njira za Passivation

1.  Kumiza M'thanki:Chigawocho chidzamizidwa mu thanki yomwe ili ndi njira yothetsera mankhwala ndipo ndi yopindulitsa pochiza malo onse opangira nthawi imodzi kuti ikhale yofanana ndi yokwanira yokana dzimbiri.

2. Kuzungulira:Ndikofunikira kwambiri pamipopi yomwe imanyamula zakumwa zowononga, momwe yankho lamankhwala limayendetsedwa ndi dongosolo la mapaipi.

3. Spray Ntchito:The mankhwala njira ndi sprayed pa chigawo pamwamba.Njira zoyenera zotayira asidi komanso chitetezo ndizofunikira panjira yamtunduwu ndipo zimakhala zopindulitsa pa chithandizo chapamalo.

4. Kugwiritsa ntchito Gel:Pogwiritsa ntchito pastes kapena gels pamwamba pa chigawocho, chithandizo chamanja chikhoza kutheka.Ili ndi phindu pakusamalira ma welds ndi madera ena ovuta omwe amafunikira tsatanetsatane wamanja.

Ndi zinthu ziti zomwe zingatheke Passivated?

·       AnodizingAluminium ndi Titaniyamu.

·       Zida zachitsulo monga zitsulo.

·       Chitsulo chosapanga dzimbiri, chomwe chimakhala ndi chrome oxide pamwamba.

·       Nickel, mapulogalamu ena amakhala ndi nickel fluoride.

·       Silicone, Silicone Dioxide yomwe imagwiritsidwa ntchito m'makampani a semiconductor.

Mapulogalamu a Passivating Process

Kuti zikhale zolimba komanso kuti zikhale ndi moyo wautali, mafakitale osiyanasiyana amapindula ndi zinthu zomwe opanga amaliza kupanga ndi njira yochepetsera.

Zachipatala:M'gawo lazaumoyo, kuti achepetse kuipitsidwa kwapazida zamankhwala, akatswiri amagwiritsa ntchito njira yochepetsera.Zosanjikiza za oxide zomwe zili pamalo osagwira ntchito zimateteza ku tizilombo tosawoneka bwino, zomwe zimatsogolera ku malo oyera komanso osalala komanso osavuta kutsekereza.

Chakudya ndi Chakumwa:Zofunikira zaukhondo ndizofunikira kwambiri m'mafakitale ambiri. Kuchepetsa chiwopsezo cha dzimbiri ndi dzimbiri zowononga zida kapena zopangira zomaliza, kuphatikizika kwa zigawo ndizofunikira kwambiri.

Makampani Azamlengalenga:Zigawo zomwe zingafunike passivation ndi Stainless Zitsulo mbali, Actuators, Hydraulic Actuators, Tizilombo zida zida, Control ndodo, Utsi zigawo zikuluzikulu mu ndege ndege ndi fasteners Cockpit.

Zida Zolemera:Mpira Bearings ndi Fasteners

Asilikali:Mfuti ndi zida zankhondo

Gawo la Mphamvu:Kugawa mphamvu ndi Kutumiza

Ubwino ndi kuipa kwa Passivating Process

Ubwino

·       Kuchotsa zotsalira zotsalira pambuyo pa makina

·       Wonjezerani Kukaniza kwa Corrosion

·       Kuchepetsa chiopsezo cha kuipitsidwa panthawi yopanga

·       Kuchita bwino kwachigawo

·       Mawonekedwe ofanana komanso osalala / mawonekedwe

·       Pamwamba ponyezimira

·       Zosavuta kuyeretsa pamwamba

kuipa

·       Passivation sikugwira ntchito pochotsa zonyansa kuchokera ku mbali zowotcherera.

·       Malinga ndi aloyi yachitsulo yomwe yatchulidwa, kutentha ndi mtundu wa kusamba kwa mankhwala ziyenera kusamalidwa.Izi zidzawonjezera mtengo ndi zovuta za ndondomekoyi.

·       Kusamba kwa asidi kumatha kuwononga zitsulo zina, zomwe zimakhala ndi chromium yochepa ndi faifi tambala.Kotero, iwo sangakhoze kunyamulidwa.

Mafunso okhudza Passivation

1.  Kodi passivation ikufanana ndi pickling?

Ayi, njira ya Pickling imachotsa zinyalala zonse, kutulutsa ndi zina zonyansa kuchokera pamwamba pazigawo zowotcherera ndikuzikonzekeretsa kuti zitheke.Pickling sangateteze zitsulo kuti zisawonongeke, zimangoyeretsa pamwamba kuti zisawonongeke.

2.  Kodi passivation imapangitsa chitsulo chosapanga dzimbiri kukhala umboni wa dzimbiri?

Ayi, palibe chinthu ngati 100% corrosion-proof.Komabe, zitsulo zosapanga dzimbiri zimakhala ndi moyo wautali kwambiri chifukwa cha njira yodutsamo.

3.  Kodi passivation ya zitsulo zosapanga dzimbiri mungasankhe?

Ayi, passivation ndi njira yofunikira pazinthu zazitsulo zosapanga dzimbiri.chigawocho adzakhala atengeke kuukira dzimbiri mu nthawi yochepa kwambiri popanda passivating ndondomeko.