Bronze/Black Coloring Parameters And Sun-Resistant (Qib 7) Stability Ntawm 304 Stainless Steel Decorative Strips

304 stainless hlau zoo nkauj strips tau dhau los ua ib qho tseem ceeb hauv kev kho vaj tse, tsim sab hauv, thiab tsim rooj tog, ua tsaug rau lawv cov tsos zoo nkauj, tiv thaiv corrosion, thiab kav ntev. Qhov kev thov rau cov xim 304 stainless hlau zoo nkauj strips-tshwj xeeb yog tooj liab thiab dub hues- tau nce siab nyob rau hauv xyoo tas los no, vim lawv ntxiv qhov kov ntawm elegance thiab versatility rau ob qho tib si niaj hnub thiab cov qauv tsim. Txawm li cas los xij, xim 304 stainless hlau yog txheej txheem precision; Cov kev ntsuas tsis raug tuaj yeem ua rau cov xim tsis sib xws, tsis zoo adhesion, thiab subpar hnub ci -resistant stability. Rau sab nraum zoov thiab siab -lub teeb- siv siv zog, ntsib Qib 7 hnub tiv thaiv (raws li ISO 105-B02 tus qauv) yog qhov tseem ceeb, vim tias lub hnub tsis txaus ua rau fading, discoloration, los yog txawm tev ntawm cov xim txheej, txo cov hniav zoo nkauj lub neej kev pab cuam. Raws li cov ntaub ntawv kev lag luam kho vaj tse kho kom zoo nkauj, kwv yees li 40% ntawm cov xim 304 stainless hlau dai kom zoo nkauj strip kev tsis txaus siab muaj feem xyuam rau lub hnub-vim ua kom tsis muaj xim, nrog 30% ntawm cov kev ua tsis tiav vim yog xim tsis raug. Tsab ntawv xov xwm no qhia txog cov xim tseem ceeb rau tooj liab thiab dub 304 stainless hlau dai kom zoo nkauj strips, tshawb xyuas cov kev ntsuas zoo los txhim kho qib 7 hnub tiv thaiv kev ruaj ntseg, thiab ntxiv nrog cov ntaub ntawv siv tau los xyuas kom muaj kev ua tau zoo thiab kev ua haujlwm.

Kev ua tiav cov xim ntawm 304 stainless hlau zoo nkauj strips pib nrog kev npaj ua ntej - xim, uas ua rau lub hauv paus rau xim xim thiab ruaj khov zaj duab xis adhesion. Lub hauv paus tseem ceeb ntawm kev kho ua ntej - yog los xyuas kom meej qhov chaw ntawm 304 stainless hlau sawb yog huv si, du, thiab tsis muaj impurities uas tuaj yeem cuam tshuam cov tshuaj tiv thaiv xim. Ua ntej, degreasing yog qhov tseem ceeb kom tshem tawm cov roj, roj, thiab cov ntiv tes tawm ntawm qhov chaw. Ib txoj hauv kev zoo tshaj plaws yog raus cov hniav zoo nkauj hauv cov tshuaj alkaline degreasing (xws li sodium hydroxide-raws li) ntawm 40-60℃rau 5-10 feeb. Ib lub chaw tsim khoom zoo nkauj hauv Guangdong ib zaug hla cov kauj ruam degreasing, ua rau cov xim tsis sib xws nrog cov pom "roj me ntsis" uas ua tsis tiav lub hnub tiv thaiv kev sim. Tom qab rov ua haujlwm nrog kev degreasing kom zoo, cov xim sib xws thiab kev ruaj ntseg zoo tuaj.

Tom ntej no, pickling yuav tsum tau tshem tawm cov nplais oxide nto thiab xeb, uas tuaj yeem ua rau xim sib txawv. Cov tshuaj dilute hydrochloric acid (5-10% concentration) los yog nitric acid tov (8-12% concentration) yog pom zoo, nrog rau lub sij hawm soaking ntawm 2-3 feeb ntawm chav tsev kub. Tom qab pickling, cov strips yuav tsum tau rinsed kom huv si nrog dej deionized kom tshem tawm cov residual acid, raws li ib tug tag nrho cov kua qaub tuaj yeem corrode lub substrate thiab cuam tshuam rau cov xim txheej adhesion. Thaum kawg, kev ua kom lub ntsej muag yog ua los ntawm kev siv cov tshuaj sulfuric acid diluted (3-5% concentration) rau 1-2 feeb, uas txhim kho cov reactivity ntawm stainless hlau nto thiab txhawb kev tsim ntawm ib tug uniform oxide xim txheej. Lub tshuab ua kom lub strips rov qab yaug nrog dej deionized thiab qhuav tag ua ntej nkag mus rau cov txheej txheem xim.

Electrochemical coloring yog feem ntau siv txoj kev ua kom tiav bronze thiab dub hues ntawm 304 stainless hlau hniav strips, raws li nws muaj meej xim tswj thiab zoo zaj duab xis adhesion. Cov tsis tseem ceeb rau cov xim electrochemical muaj xws li electrolyte muaj pes tsawg leeg, qhov kub thiab txias, qhov ceev tam sim no, thiab lub sij hawm xim xim -cov kev ntsuas no ncaj qha txiav txim siab cov xim ntxoov ntxoo thiab lub thickness ntawm cov xim txheej, uas yog ze rau lub hnub- tiv taus stability.

Rau bronze coloring ntawm 304 stainless hlau hniav strips, pom zoo electrolyte yog ib tug tov tov ntawm chromic acid thiab sulfuric acid. Qhov zoo tshaj plaws muaj pes tsawg leeg yog 200-250g / L chromic acid (CrO₃) thiab 10-15g / L sulfuric acid (H₂SO₄). Cov electrolyte kub yuav tsum tau tswj ntawm 25-35 degree; Qhov kub thiab txias dua ua kom cov xim tsis sib xws tab sis yuav ua rau cov xim tsis sib xws, thaum qhov kub thiab txias ua rau qeeb xim thiab xim daj ntseg. Qhov ceev tam sim no yog ib qho tseem ceeb tsis zoo rau bronze shading: ib tug ceev ntawm 10-15A / dm² ua ib lub teeb bronze xim, 15-20A / dm² yields ib tug nruab nrab bronze, thiab 20-25A / dm² tsim ib tug tsaus bronze. Lub sijhawm xim feem ntau yog nyob ntawm 3-8 feeb, nyob ntawm seb qhov xav tau xim qhov tob. Ib tug European architectural kho kom zoo nkauj tsum tau kho qhov ceev tam sim no los ntawm 18A / dm² mus rau 22A / dm² thaum ua tsaus bronze hniav strips rau lub tsev so chaw tos txais, ua kom tiav qhov ntxoov ntxoo tiag tiag xav tau los ntawm pab neeg tsim thaum ua kom cov xim txheej thickness mus txog 0.8-1.2μm, uas yog qhov tsawg kawg nkaus lub hnub thickness.

Rau cov xim dub, cov electrolyte feem ntau yog sib xyaw ntawm sodium hydroxide thiab sodium nitrite. Qhov pom zoo muaj pes tsawg leeg yog 80-120g/L sodium hydroxide (NaOH) thiab 40-60g/L sodium nitrite (NaNO₂). Qhov kub ntawm electrolyte yog siab dua li rau cov xim bronze, feem ntau yog 80-95 degree, vim cov txheej txheej dub oxide tsim yuav tsum muaj zog ua kom ntau dua. Qhov ceev tam sim no yuav tsum tau tswj ntawm 5-10A / dm², thiab lub sijhawm xim yog 5-10 feeb. A too-high current density can cause the black layer to peel off, while insufficient time results in a grayish instead of pure black color. Ib lub chaw tsim khoom siv kho vajtse hauv Asmeskas tau ua kom zoo rau cov xim dub tsis zoo rau 304 stainless hlau hniav strips siv nyob rau hauv sab nraum zoov railings: los ntawm kev teeb tsa lub electrolyte kub rau 90 degree, tam sim no ceev rau 8A / dm², thiab xim lub sij hawm mus rau 7 feeb, lawv ua tiav ib tug uniform xim dub nrog ib tug xim txheej thickness ntawm 1.2-1.5μm, uas kuj dhau Grating.

Tom qab-xim sealing kev kho mob yog ib qho tseem ceeb hauv kev txhim kho lub hnub- resistant stability ntawm cov xim 304 stainless hlau zoo nkauj strips, vim nws seals lub pores ntawm cov xim txheej, tiv thaiv oxidation, thiab txhim kho hnav tsis kam. Txoj kev sealing zoo tshaj plaws rau cov xim electrochemical yog dej kub sealing los yog sealing nrog ib lub siab inorganic sealant. Rau cov dej kub sib khi, cov xim pleev xim zoo nkauj yog muab tso rau hauv dej deionized ntawm 95-100℃rau 10{12}}15 feeb, uas hloov cov oxides tsis ruaj tsis khov hauv cov xim xim rau hauv cov hydroxides ruaj khov, txhim kho lub hnub tiv thaiv. Rau inorganic sealant sealing, ib qho silicate -raws li sealant raug pom zoo; cov strips yog immersed nyob rau hauv lub sealant tov ntawm 60-70℃rau 5-8 feeb, tsim ib tug tiv thaiv zaj duab xis rau saum npoo. Ib lub tuam txhab Suav tau muab piv rau ob txoj hauv kev thiab pom tias cov khoom siv sealant-sealed dub zoo nkauj strips khaws 95% ntawm lawv cov xim tom qab 1000 teev ntawm lub hnub raug kuaj (raws li Qib 7 cov qauv), thaum cov dej kub-sealed strips khaws cia 88% - ob qho tib si raws li Qib 7, tab sis sealant sealing muaj kev ruaj ntseg ntev.

Txhawm rau ua kom qib 7 hnub ci- tiv taus kev ruaj ntseg, kev ntsuas ntxiv tuaj yeem ua tau, xws li siv cov txheej tiv thaiv kom pom tseeb ntawm cov xim dawb. High -pob tshab acrylic lossis fluorocarbon txheej nrog UV tiv thaiv tuaj yeem thaiv cov kab hluav taws xob ultraviolet, qhov tseem ceeb ntawm cov xim fading. Cov txheej txheej yuav tsum yog 5-10μm, thiab nws yuav tsum tau siv cov tshuaj tsuag txheej rau kev tiv thaiv ib puag ncig. Ib tug Japanese tsheb kho kom zoo nkauj qhov chaw muab khoom siv UV- tiv thaiv fluorocarbon txheej rau dub 304 stainless hlau hniav strips siv nyob rau hauv lub tsheb sab nrauv trims, uas dhau 2000 teev ntawm kev ntsuam xyuas lub hnub nrawm yam tsis muaj qhov tseem ceeb fading. Nws tseem yog ib qho tseem ceeb rau kev tswj cov ncej- txheej txheem xim kom qhuav: cov strips yuav tsum tau qhuav hauv qhov cub huv, tsis muaj plua plav ntawm 80-100℃rau 15-20 feeb, tsis txhob tshav ntuj ncaj qha thaum ziab, vim qhov no tuaj yeem ua rau tsis sib xws ntawm cov xim txheej.

Tshav -kev ntsuas kev ruaj ntseg (Qib 7 rau ISO 105-B02) yog ib kauj ruam tseem ceeb los xyuas qhov zoo ntawm cov xim 304 stainless hlau zoo nkauj strips. Qhov kev sim no suav nrog nthuav tawm cov qauv mus rau lub teeb xenon arc uas simulates ntuj hnub ci, nrog lub zog hluav taws xob ntawm 1000W / m² thiab lub vaj huam sib luag dub ntawm 63 ± 3 degree. Tom qab 1000 teev dhau los, qhov sib txawv xim (ΔE) yuav tsum tsawg dua lossis sib npaug li 2.0 kom ua tau raws li Qib 7 cov qauv. Canadian architectural project yuav tsum tau 304 stainless hlau zoo nkauj strips nrog Qib 7 hnub tiv thaiv rau sab nraum zoov cladding. Tus neeg muag khoom tau kuaj ua ntej xa khoom xa tuaj thiab pom tias qee qhov bronze strips muaj ΔE ntawm 2.8. ua tsis tau tus qauv. Tom qab tshawb xyuas, lawv pom qhov kub ntawm electrolyte siab dhau (40 degree) thaum lub sijhawm xim. Los ntawm kev kho qhov kub thiab txias rau 30℃thiab rov ua dua, ΔE tau txo qis rau 1.5. ua tau raws li qhov xav tau ntawm qhov project.

Cov ntaub ntawv siv tswv yim ntxiv ua pov thawj qhov tseem ceeb ntawm kev tswj xyuas qhov tseeb thiab kev ntsuas kev ruaj ntseg. Ib qho loj - nplai kev lag luam hauv Dubai siv dub 304 stainless hlau zoo nkauj strips rau nws sab nraum zoov facade. Tus neeg muag khoom tau txais qhov zoo tshaj plaws electrochemical coloring parameters (sodium hydroxide-sodium nitrite electrolyte, 90 degree, 8A/dm², 7 feeb) thiab sealant sealing, ua raws li UV-resistant acrylic txheej. Tom qab 2 xyoos raug rau lub tshav suab puam hnyav (siab UV siv thiab kub), cov khoom siv zoo nkauj tsis pom pom fading lossis tev, tswj lawv cov xim dub qub. Lwm qhov xwm txheej cuam tshuam nrog cov zej zog nyob hauv tebchaws Australia uas tau siv tooj liab 304 stainless hlau zoo nkauj strips rau lub sam thiaj railings. Cov chaw tsim khoom siv cov lus pom zoo chromic acid-sulfuric acid electrolyte thiab dej kub sealing, thiab cov strips dhau qib 7 hnub tiv thaiv kev ntsuas. Tom qab 3 xyoos ntawm kev siv sab nraum zoov, cov xim bronze tseem zoo ib yam, tsis muaj xim.