2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28
Steel burnishing yog cov txheej txheem tshuaj siv kom tau txais cov yeeb yaj kiab tiv thaiv nyias ntawm Fe3O4 hlau oxides ntawm qhov chaw ntawm cov hlau. Nws tau txais nws lub npe vim hais tias ntawm cov yam ntxwv xim ntawm ib feem tom qab ua tiav (xiav-dub, raven tis), nws kuj muaj cov npe "blackening" los yog "xiav" nyob rau hauv cov ntaub ntawv dav dav, tsis hais xim - "oxidation". Cov yeeb yaj kiab uas tau tshwm sim dhau los ntawm qhov chaw thiab tiv thaiv qhov chaw ntawm huab cua corrosion thiab lwm qhov chaw ua phem.
Ua ntej bluing steel, ib feem yog npaj ua ntej, mechanically ntxuav ntawm xeb, polished, degreased thiab pickled nyob rau hauv ib tug acid tov. Koj tuaj yeem degrease nrog cov kuab tshuaj lossis cawv. Pickling yuav tsum tau tshem tawm tag nrho cov oxides ntau dhau ntawm qhov chaw, tawm hauv cov hlau liab.
Txoj kev yooj yim tshaj plaws yog hlawv hlau nrog roj. Muaj ntau txoj kev sib txawv, tab sis lub ntsiab lus yog yooj yim: ib txheej nyias ntawm cov roj yog siv rau ib feem, tom qab ntawd nws yuav tsum tau rhuab mus rau 300-350 ° C. Cov roj hlawv tawm ib zaj duab xis oxide rau ntawm qhov chaw. Txij li thawj zaug, cov txheej txheej tsis tau txais, yog li cov txheej txheem rov ua dua kom txog thaum qhov kev xav tau tiav. Nws yog ib qho tseem ceeb kom ua tiav cov cua sov sib xws, txwv tsis pub cov yeeb yaj kiab yuav stain,thiab tsis txhob overheat ib feem, vim nws tuaj yeem deform lossis tso tawm. Muaj coob tus neeg ua yuam kev ntawm dipping ib feem rhuab mus rau hauv cov roj, qhov no yog tsis ncaj ncees lawm. Nws yog tsim nyog tsuas yog qhov opposite: thawj smear, ces tshav kub. Txhua yam roj siv, los ntawm paj noob hlis mus rau kev sib kis lossis tshuab roj. Xws li burnishing ntawm steel muaj ib tug tsawg txheej zog. Nws tsuas yog tsim nyog rau kev kho kom zoo nkauj thiab tiv thaiv lub hom phiaj.
Bluing steel siv ferrous sulfate, ferric chloride thiab nitric acid
Ua li no, koj yuav tsum yaj 15 g ntawm hlau, 30 g ntawm vitriol thiab 10 g ntawm acid ib liter dej. Lub rusty txheej yuav tsim rau ntawm cov khoom dipped rau hauv cov tshuaj, nws yuav tsum tau muab tshem tawm ib ntus nrog ib tug txhuam thiab txuas ntxiv mus rau dipped kom txog rau thaum cov xim ntawm cov oxide zaj duab xis xav tau. Tam sim no yuav luag txhua lub nroog muaj lub khw muag tshuaj reagents, yog li tau txais lawv kuj yooj yim.
Bluing ntawm steel siv chromic (potassium bichromate). Ua li no, 200 grams ntawm chrompic yog diluted ib liter dej thiab ib feem yog immersed nyob rau hauv cov tshuaj rau 20-30 feeb. Tom qab tshem tawm los ntawm kev daws, nws yuav tsum tau qhuav ntawm qhov kub thiab txias (hauv qhov cub lossis tshaj coals). Rov ua cov txheej txheem kom txog thaum tau txais cov xim xiav-dub. Tom qab ntawd so ib feem nrog ib daim ntaub oiled. Chrompic yog ib qho tshuaj reagent siv hauv kev lag luam tawv.
Rau cov phom bluing, sib tov nrog cua sov 1 qhov hnyav ntawm antimony trichloride nrog 3 qhov chaw ntawm cov roj txiv roj. Tom qab ntawd qhov sib tov yog siv rau ib feem thiab sab laug rau ib hnub. Cov txheej txheem rov ua dua 10-12 zaug, tom qab ntawd lub thoob yog ntxuav, qhuav thiab polished. Cov xim yog ntsuab ntsuab.
Raws li tuaj yeem pom los ntawm cov saum toj no, bluing steel hauv tsev yog qhov ua tau tiav thiab tsis yooj yim. Nws tuaj yeem siv rau txhua yam khoom siv hlau hauv rooj plaub uas lwm txoj kev tiv thaiv corrosion, xws li pleev xim, tsis siv tau.
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