SECC cov khoom siv piav qhia cov ncauj lus kom ntxaws
Secc (electrolytic chromate - Cov Khoom Siv Hluav Taws Xob Dav Hlau Dav Siv Dav Hlau, Kev Lag Luam Hluav Taws Xob, Tsheb, thiab lwm yam lag luam. Nws cov khoom tseem ceeb xws li corrosion tsis kam, txheej txheem, thiab pleev xim. Cov hauv qab no yog cov ncauj lus kom ntxaws:
1. Cov ntsiab lus ntawm cov khoom tseem ceeb
Cov Ntawv Qhia Cov Khoom
Substrate Txias - rolled steel ntawv (xws li SPCC, SPCE), qee qhov siab- lub zog steel substrates (xws li Serm440)
Kev Kho Cov Khoom Hauv Elefolytic Zinc Plating (Zn) + Chromate Passivation (Cr³ning / Cru, Niaj Hnub No Niaj Hnub Thiab Ib puag ncig Phim Charomium)
Zinc Txheej Thickness feem ntau 10 ~ 40 g / m² (ib sab), thinner tshaj li kub- dip galvanizing (GI), tab sis ntau yam kev hnav khaub ncaws
Xim Silver - dawb (zinc txheej (zinc txheej), tej zaum yuav iridescent, lub teeb daj lossis tsis muaj tshuaj ntsuab tom qab kho chromate
2. Cov khoom siv tseem ceeb
(1) corrosion tsis kam
Zinc Txheej muab cov tshuaj hanodic (kev txi Anode), uas tuaj yeem tiv thaiv cov xeb txawm tias qhov chaw khawb.
Lub Chromate Zaj Duab Xis (0.1 ~ 1.0 mg / m² cr) ntxiv rau corrosion tsis kam thiab qeeb dawb xeb (zn oxidation).
Ntsev tshuaj tsuag (nruab nrab): feem ntau 48 ~ 120 teev yam tsis muaj xeb liab (nyob ntawm cov txheej txheej xim liab thiab cov txheej txheem passivation).
Piv:
SECC (electrolytic zinc Plating + diromate) ≈ Gi (kub}}} dip galvanizing, tab sis txheej yog thinner.
Spcc (tsis muaj txheej) yog nquag muaj xeb thiab yuav tsum tau tiv thaiv txheej.
(2) ua thiab sau cov khoom
Punching Cov Khoom: Zoo dua li kub - dip galvanized ntawv (GI), nws yog qhov tsim nyog rau cov khoom siv thev naus laus zis (xws li hauv vaj tsev).
Dab tsi yog khoov cov khoom: Zin Txheej muaj cov nplaum zoo thiab tsis yooj yim rau tev tawm (tab sis "hmoov" yuav tshwm sim thaum cov ntsiab lus zinc yog siab).
Vuam cov khoom: Chaw welding yog ua tau, tab sis zinc txheej yuav tsim hws (tam sim no yuav tsum tau hloov kho).
Muaj cov txheej txheem: stamping, dabtsi yog khoov, shear, vuam, vuam (txheej txheem txhim kho kom tsim nyog yuav tsum tau).
(3) Txheej thiab cov khoom kho kom nto
Cov txheej txheem chromate muab cov qauv microporous, uas txhim kho cov nplaum ntawm cov xim pleev xim, hmoov hmoov, thiab elecophoresis.
Tuaj yeem luam tawm ncaj qha (piv txwv li, silk npo screen tshuab luam ntawv, UV printing) tsis muaj dua pre- kev kho.
Conductivity: Haum rau cov ntawv thov yuav tsum tau siv hluav taws xob thaiv (EMI) (piv txwv li, cov tuam tsev).
(4) cov khoom siv tshuab (nyob ntawm substrate)
Cov tsis muaj dog dig Secc (SPCc substrate) siab - lub zog secc (piv txwv li, saph440 substrate)
Lub zog tensile 270 ~ 440 mpa 440 ~ 980 MPa
Tawm lub zog 120 ~ 280 mpa 280 ~ 590 mpa
Elongation 30 ~ 45% 15 ~ 30% (siab-} lub zog hlau)
NCO TSEG: Ua haujlwm txias (piv txwv li, Stamping) yuav ua rau tawv tawv hauv zos, uas yuav tsum muaj cov annaling los txhim kho kev sib zog.
3. Kev tiv thaiv ib puag ncig thiab kev txwv
Tsoos cov chromates muaj cov tshuaj chromium (CRROMALENT (CRRO), uas yog tshuaj lom thiab txwv los ntawm rohs / ncav cuag. Tam sim no, cov hauv qab no tau siv hloov:
Kev sib cav sib zog chromium (tawg) passivation (ib puag ncig phooj ywg)
Chromium - sulivation dawb (xws li kev ua si hauv qab zib thiab molybdate kho)
Rov ua dua tshiab: tuaj yeem siv nrog lwm cov hlau galvanized, tab sis cov chromate txheej yuav tsum tau sib cais (qee cov tuam ntxhab yuav tsum tau ua tshwj xeeb).
4. Cov ntawv thov raug
Cov Khoom Siv Hluav Taws Xob thiab hluav taws xob: Cov ntaub ntawv txheej txheem ua haujlwm, lub zog tsav tsheb nyuaj, cov khoom siv fais fab (yuav tsum tau EMI Tiv Thaiv).
Automotive: Sab hauv cov tsev nyob rau hluav taws xob (tsis -} tej ntu kab).
Cov Khoom Siv Hauv Chaw Ua Haujlwm: Cov Ntawv Luam Ntawv, Cov Tshuab Luam Ntawv (yuav tsum muaj siab - precision stamping).
Cov Cuab Yeej Siv / Cov Rooj Tog Zaum: Lub Hnav Tsho, Cov Panels zoo nkauj (yuav tsum tau tom qab kos duab).
5. Secc thiab lwm cov nplooj galvanized steel
Cov yam ntxwv: Secc (Electrolytic Zinc Txheej + Chromate) Gi (kub}} (elromium {{2 {2 2}} dawb)
Zinc txheej: nyias (10 -}} 40 g / m²), hnav ris tsho; Tuab (20-180 g / m²), spangled; Zoo ib yam li Secc, tab sis chromium-dawb
Corrosion Kuj: nruab nrab {{0} high (cia siab rau txheej passivation txheej); Siab (tuab zinc txheej); Nruab nrab (chromium - dawb, raug rau oxidation); Kev ua haujlwm: zoo heev (haum rau precision stamping); Qhov nruab nrab (cuam tshuam cuam tshuam); Zoo tshaj
Nqi: Nruab nrab; Tsawg; Nruab nrab - high (ib puag ncig cov txheej txheem phooj ywg);
Ntsiab lus: Secc cov tseem ceeb tau nta nyob rau hauv nws qhov ntsuas corrosion tsis kam, kev ua haujlwm, thiab pleev xim. Nws yog qhov tshwj xeeb rau hauv hluav taws xob thiab hluav taws xob sib sau ua kom precision sib sau thiab kev kho kom nto. Rau ntau dua corrosion tsis kam lossis kev siv sab nraum zoov, xav txog kub- dip galvanizing (GI) lossis galvanized aluminium (gl).