Bluing yog txheej txheem ntawm kev tau txais txheej txheej nyias ntawm cov hlau oxides ntawm kev ua haujlwm qis lossis roj carbon hlau. Cov tsos ntawm blued hlau nyob ntawm lub tuab ntawm no txheej, uas muab cov xim sib txawv, hloov chaw sib xws li zaj duab xis hlob. Yog li cov xim dab tsi tuaj yeem blued steel muaj?
Bluing hom
Nws muaj peb hom hlau hlawv: alkaline, acidic thiab thermal. Alkaline hlawv tawm yog kev laus ntawm cov hlau hauv kev hais daws teeb meem nrog tus neeg sawv cev oxidizing ntawm qhov kub ntawm 135 txog 150 degrees. Cov kua roj hlawv cov txheej txheem yuav siv sij hawm nyob rau hauv cov tshuaj acidic los ntawm kev siv tshuaj electrochemical lossis tshuaj. Hauv qhov kub bluing, hlau tau oxidized ntawm qhov kub thiab kub thiab superheated dej vapor. Tsis tas li ntawd, qhov cua sov bluing tuaj yeem ua rau cov kua qab ntsev, cov roj ntsha ntawm cov tshuaj ammonia-cawv tov, lossis hauv huab cua.
Thaum bluing nyob rau hauv huab cua qhov chaw, lub nplaim ntawm cov hlau yog pre-coated nrog cov roj lossis cov kua roj vanish.
Raws li qhov bluing, steel kis tau luster, microporous nplua-crystalline nto qauv, nrog rau cov khoom tiv thaiv zoo dua qub, uas nce ntxiv tom qab impregnation ntawm oxide zaj duab xis nrog zaub lossis ntxhia roj. Niaj hnub no steel hlawv cov ntaub ntawv tsuas yog siv rau kev ua kom zoo nkauj thiab cov hlau tiv thaiv kev tiv thaiv. Ntxiv nrog rau kev tha xim sab nraud ntawm qhov khoom, bluing tiv thaiv cov hlau los ntawm kev tiv thaiv oxidation nyob rau hauv tus ntawm noo noo thiab huab cua.
Blued steel tsos
Nrog kev pab cuam ntawm bluing, cov khoom steel yuav muab ntau cov xim siv ib qho cua sov - xim yuav nyob ntawm qhov degree ntawm cua sov ntawm cov hlau. Thaum ib qho khoom ntab mus txog 220 degrees, blued steel yuav muaj lub teeb txiv kab ntxwv xim, cua sov rau 225 degrees yuav muab cov xim txiv kab ntxwv, 235 degrees yuav muab cov xim daj, 277 degrees - ntshav, 280 degrees - xiav, 299 degrees - xiav, 316 qib - xim dub thiab xiav.
Ua ntej bluing hlau, cov txheej txheem steel khoom yuav tsum ua kom huv huv ua ntej ntxuav.
Txhawm rau muab blued steel nws nrov tshaj plaws greenish xim av daj, zom 3 khob ntawm txiv roj roj nrog 1 khob ntawm antimony trichloride thaum cua sov. Cov sib tov sib xyaw tau thov hauv txheej txheej nyias nyias nrog daim khaub hlab mus rau saum npoo ntawm cov khoom hlau thiab sab laug los so rau nees nkaum plaub teev. Tom qab lub sijhawm no, cov hlau yuav kis tau rau ib qho xeb xeb, yog li cov txheej txheem bluing rov ua dua ib zaug ntxiv, tom qab ntawd cov khoom hloov xim av, thiab tom qab ntawd ntau zaus raws li tsim nyog kom tau txais cov xim yam xav tau. Cov txheej txheem feem ntau yuav siv sijhawm kaum txog kaum ob hnub. Tiav blued hlau yuav tsum tau muab ntxuav kom huv, ziab thiab polished nrog lub pob zeb tshwj xeeb (lossis varnished / varnished).
