Melemo le Mefokolo ea Trivalent Chromium Plating

Taba ea pele, Trivalent ke eng?

Ke amekhabiso ea chrome plating, e ka fanang ka khanyetso ea ho qaleha le ho bola ka mefuta e fapaneng ea mebala.Chrome e nyanee nkuoa e le mokhoa o bonolo oa tikoloho ho fapana le chromium ea hexavalent.

Ka mor'a moo, A re hlahlobisiseng mokhoa ona ho utloisisa melemo le mathata a eona.

Melemo:

Melemo eamekhoa e meraro ea chromiumka lebaka la ts'ebetso ea hexavalent chromium ho na le mathata a fokolang a tikoloho ka lebaka la chefo e tlase ea trivalent chromium, tlhahiso e phahameng, le litšenyehelo tse tlase tsa ts'ebetso.

Ts'ebetsong ea trivalent chromium, chromium e hexavalent ke litšila tsa ho hlapa.Ka hona, bate ha e na palo efe kapa efe ea bohlokoa ea hexavalent chromium.Kakaretso ea kholiso ea chromium ea litharollo tse tharo tsa chromium e batla e le karolo ea bohlano ea litharollo tsa chromium tse hexavalent.

Ka lebaka la k'hemistri ea trivalent chromium electrolyte, moholi ha o etsahale nakong ea plating joalo ka ha o etsa nakong ea ho penta ha chromium e nang le hexavalent.Tšebeliso ea trivalent chromium e boetse e fokotsa mathata le litšenyehelo tsa ho lahla litšila.

Mefokolo:

Mathata a ts'ebetso ea trivalent chromium ke hore ts'ebetso e na le kutloelo-bohloko ho tšilafalo ho feta ts'ebetso ea hexavalent ea chromium, 'me ts'ebetso ea trivalent ea chromium ha e khone ho kopanya mefuta eohle ea botenya ba poleiti eo ts'ebetso ea chromium ea hexavalent e ka e khonang.Kahobane e na le kutloelo-bohloko ho tšoaetso, ts'ebetso ea chromium e nyenyane e hloka ho hlatsuoa ka botlalo le taolo e matla ea laboratori ho feta ts'ebetso ea hexavalent chromium.Libate tse nyane tsa chromium li ka ba botenya ba ho fihla ho 0.13 ho isa ho 25 µm.E ke ke ea sebelisoa bakeng sa lisebelisoa tse ngata tse thata tsa chromium plating.

Libate tsa "Chromium Electroplating" tsa "trivalent chromium electroplating" li ntlafalitsoe haholo-holo ho nka sebaka sa libate tsa chromium tse khabisitsoeng ka bophara.Ntlafatso ea bate e meraro e ipakile e le thata hobane trivalent chromium e qhibiliha ka metsing ho etsa li-ion tse tsitsitseng tse sa lokolleng chromium habonolo.Hajoale, ho na le mefuta e 'meli ea lits'ebetso tsa trivalent chromium' marakeng: sele e le 'ngoe le sele e habeli.Phapang e kholo lits'ebetsong tsena tse peli ke hore tharollo ea lisele tse peli e na le li-chloride tse fokolang ho isa ho tse se nang letho, athe tharollo ea sele e le 'ngoe e na le li-chloride tse ngata.

Ho feta moo, ts'ebetso ea lisele tse peli e sebelisa li-anode tsa lead tse kentsoeng ka har'a mabokose a anode a nang le tharollo ea dilute sulfuric acid 'me a kenngoe ka lera le kenang, athe ts'ebetso ea sele e le 'ngoe e sebelisa li-anode tsa carbon kapa graphite tse kenngoeng ka kotloloho. tharollo ea plating.Lintlha mabapi le lits'ebetso tsena ha li fumanehe hobane libate tsa trivalent chromium tse teng hona joale 'marakeng ke tsa thepa.

Mona ke melemo e meholo ea Trivalent chrome:

• Mosi o chefo o fokolang ho feta ho rala ka hexavalent

· Ho se be le litšila tse fokolang

· Litšenyehelo tse tlase tsa ho hloekisa metsi a litšila

· Melao e fokolang ea liteko le litšenyehelo tse amanang le tsona

Litšitiso ke tse latelang:

· Litšenyehelo tse phahameng ho feta lik'hemik'hale le tlhokomelo ho fapana le ho roala ka hexavalent.

· Bothata ba khetho ea anode

· Sebopeho sa tharollo e rarahaneng

· Bothata ba ho roala botenya bo eketseha