Ọkpụkpụ ígwè chrome platedna-ekpuchi ya na oyi akwa nke metal n'elu nke ígwè ọkpọkọ ígwè site na electroplating.Ebumnuche kachasị mkpa nke ọkpọkọ ígwè chromium plated bụ nchebe.Ọkpụkpụ ígwè chromium plated nwere ezigbo nkwụsi ike kemịkalụ ma anaghị emeghachi omume na alkali, sulfides, nitric acid na ọtụtụ acid organic.Ọkpụkpụ ígwè chromium plated nwere ike igbari na hydrochloride acid (dị ka hydrochloride acid) na sulfuric acid dị ọkụ.Nke abuo, chromium plating nwere ezigbo okpomọkụ na-eguzogide, na chromium plated ígwè ọkpọkọ na-oxidize na discolor mgbe okpomọkụ karịrị 500 degrees Celsius.Ọzọkwa, ọnụọgụ esemokwu ya, ọkachasị ọnụọgụ esemokwu akọrọ, bụ nke kachasị ala n'etiti ọla niile, na ọkpọkọ ọla kọpa chrome nwere ezigbo nguzogide eyi.N'ebe ọkụ a na-ahụ anya, ikike ntụgharị uche nke chromium dị ihe dịka 65%, n'etiti ọlaọcha (88%) na nickel (55%).Chromium anaghị agbanwe agba, na ọkpọkọ ígwè chrome nwere ike ịnọgide na-enwe ike ịtụgharị uche ruo ogologo oge mgbe ejiri ya, nke dị mma karịa ọlaọcha na nickel.Enwere ụdị usoro chrome plated atọ.
1. Nchedo - Ihe eji achọ mma Chromium Plating - Ihe ịchọ mma Chromium Plating, nke a na-akpọkarị Chromium, nwere mkpuchi dị nro ma na-egbuke egbuke nke a na-ejikarị dị ka oyi akwa nke electroplating multi-layer.Iji nweta ebumnuche nchebe, a ga-ebu ụzọ tinye akwa mkpuchi etiti zuru oke na zinc dabere ma ọ bụ mkpụrụ nchara, wee tinye akwa etiti na-egbuke egbuke nke 0.25-0.5 n'elu ya μ chromium oyi akwa nke m.Usoro ndị a na-ejikarị eme ihe gụnyere Cu / Ni / Cr, Ni / Cu / Ni / Cr, Cu Sn / Cr, wdg. Mgbe emechara elu ngwaahịa ahụ na plating chromium mara mma, enwere ike nweta ihe na-acha anụnụ anụnụ na-acha anụnụ anụnụ.Adịghị agbanwe agba mgbe ogologo oge ikpughe na ikuku.A na-eji ụdị mkpuchi a eme ihe n'ọtụtụ ebe maka nchekwa na ịchọ mma nke ihe ndị dị ka ụgbọ ala, igwe igwe, igwe ịkwa akwa, elekere, ngwa na ngwaike kwa ụbọchị.Ngwunye chromium a na-achọ mma na-egbuke egbuke nwere ike na-egosipụta ike dị elu ma nwee ike iji ya mee ihe ngosi.Ịkwadebe micro pores ma ọ bụ microcracks nke chromium na nickel multi-layer bụ ụzọ dị mkpa iji belata mkpokọta mkpuchi nke mkpuchi ma nweta usoro ihe eji achọ mma nke nwere nchebe dị elu nke corrosion.Ọ bụkwa ụzọ mmepe nke usoro electroplating nke oge a.
2. chromium siri ike (chromium na-eyi na-eguzogide) plating nwere oke isi ike ma na-eyi nguzogide, nke nwere ike ịgbatị ndụ ọrụ nke workpieces, dị ka ịcha na ịbịaru ngwaọrụ, ịpị na nkedo ebu nke ihe dị iche iche, bearings, shafts, gauges, gears. , wdg, na nwekwara ike iji rụkwaa nha nha ndidi akụkụ nke eyi.Ọkpụrụkpụ nke plating chromium siri ike bụ n'ozuzu 5-50 μm.A pụkwara ikpebi ya dị ka mkpa, ụfọdụ dị elu dị ka 200-800 μ M. Ihe siri ike chromium plating na akụkụ ígwè anaghị achọ mkpuchi nke etiti.Ọ bụrụ na enwere ihe pụrụ iche chọrọ maka nguzogide corrosion, a pụkwara iji mkpuchi dị n'etiti dị iche iche mee ihe.
3. Mmiri ara ehi na-acha ọcha chromium plating oyi akwa bụ mmiri ara ehi na-acha ọcha, na-egbuke egbuke dị ala, ịdị mma dị mma, obere porosity, na agba dị nro.Isi ike ya dị ala karịa nke chromium siri ike na chromium a na-achọ mma, mana ọ nwere nguzogide corrosion dị elu, n'ihi ya, a na-ejikarị ya eme ihe n'ihe eji atụ ihe na ogwe ngwaọrụ.Iji meziwanye ike ya, akwa akwa nke chromium siri ike, nke a makwaara dị ka mkpuchi chromium okpukpu abụọ, nwere ike kpuchie ya n'elu mkpuchi ọcha nke mmiri ara ehi, nke jikọtara njirimara nke ma mkpuchi chromium na-acha ọcha na mkpuchi chromium siri ike.A na-ejikarị ya eme ihe maka akụkụ mkpuchi nke na-achọ ma iyi nguzogide na nguzogide corrosion.
4. Porous chromium plating (porous chromium) utilizes e ji mara mma cracks na chromium oyi akwa onwe ya.Mgbe etinyechara chromium siri ike, a na-eme usoro ọgwụgwọ, kemịkalụ, ma ọ bụ electrochemical iji mee ka ọ dịkwuo omimi ma gbasaa netwọk mgbape.Elu nke chromium oyi akwa kpuchie na sara mbara grooves, nke ọ bụghị nanị na nwere àgwà nke eyi na-eguzogide chromium, kamakwa n'ụzọ dị irè na-echekwa lubricating media, na-egbochi ndị na-abụghị lubricated ọrụ, na mma na esemokwu na eyi iguzogide nke workpiece elu.A na-ejikarị ya eme ihe maka ịkwanye elu akụkụ nke esemokwu Sliding n'okpuru nrụgide siri ike, dị ka ụlọ dị n'ime nke ime ụlọ ọkụ cylinder cylinder, mgbanaka piston, wdg.
⑤ Plating black chromium black chromium mkpuchi nwere otu luster, ezigbo mma, na ezigbo mkpochapụ;The ike dịtụ elu (130-350HV), na eyi iguzogide bụ 2-3 ugboro elu karịa nke nickel na-egbuke egbuke n'okpuru otu ọkpụrụkpụ;Nguzogide corrosion ya dị ka plating chromium nkịtị, tumadi dabere na ọkpụrụkpụ nke oyi akwa etiti.Ezigbo okpomọkụ na-eguzogide, ọ dịghị discoloration n'okpuru 300 ℃.Enwere ike kpuchie oyi akwa chromium ojii ozugbo n'elu igwe, ọla kọpa, nickel, na igwe anaghị agba nchara.Iji meziwanye nguzogide corrosion na mmetụta ịchọ mma, ọla kọpa, nickel, ma ọ bụ ọla kọpa tin alloy nwekwara ike iji dị ka oyi akwa nke ala, na mkpuchi chromium ojii nwere ike ịgbanye n'elu ya.A na-ejikarị mkpuchi chromium ojii kpuchie nchedo na ịchọ mma nke akụkụ nke ngwa ụgbọ elu na ngwa ngwa, ogwe nnabata ike anyanwụ na ihe ndị dị mkpa kwa ụbọchị.
Oge nzipu: Jul-02-2023