Ob peb txoj kev ua kom browning nyob rau hauv tsev

Browning los yog oxidation, tau paub rau ib ntev lub sij hawm. Yav tas los, xws ua siv los mus tiv thaiv cov hlau los ntawm xeb, tab sis tam sim no - feem ntau rau cov hniav hom phiaj. Rau cov craftsman tsis siv sij hawm ntau rau siv burnishing nyob rau hauv tsev yuav muab lub hlau tsab xov xwm nthuav saib los yog los ib tug mus yos hav zoov phom loj. Ua li no, koj yuav tsum tau tsuas muaj lub siab xav thiab tej yam kev txawj ntse.

Txoj kev uas yuav ua rau nyob rau hauv tsev burnishing steel

Qhov yooj yim ntawm lawv - cov roj txheej thiab tom ntej cua sov ntawm cov hlau. Qhov no yog ua raws li nram no. Lub preform yog ntxuav thiab degreased thiab ces txawm lig los plhws nrog ib tug nyias txheej ntawm cov kua roj vanish (muaj zaub roj). Nws twb ces muab tso rau hauv lub qhov cub los yog cov pa cub thiab rhuab mus rau plaub puas degrees. Cov no ib tug check hniav zaj duab xis uas tsaus nti xim av xim.

Lwm txoj kev ua bluing tsev hlau teb yog boiled nyob rau hauv ib tug muaj zog alkaline tov (poov tshuaj, sodium hydroxide). Nyob rau hauv cov ntaub ntawv no, cov hlau acquires ib tug zoo nkauj xiav xim, tab sis lub browning yog tsis heev cov lus hais - ib qho yooj yim. Yog li ntawd, cov qauv no yog tsim rau cov me-sized hlau khoom cylindrical zoo. Rau ib tug ntau pronounced xiav-dub zas preform yuav tsum rhaub nyob rau hauv ib tug tov muaj 1 liter dej, ib lub hlis twg kilogram ntawm sodium nitrite, 700 g ntawm sodium hydroxide thiab 200 grams ntawm sodium nitrate.

Qhov tseem nyuab txoj kev uas yuav ua blueing nyob rau hauv tsev, tab sis kuj muab qhov zoo tshaj plaws kev tshwm sim - plab zom mov preform nyob rau hauv ib tug qhuav ntawm sodium nitrate. Cov txheej txheem yuav tsum tau qhov chaw nyob rau ib tug kub ntawm 350 degrees Celsius. Nyob rau hauv no txoj kev ib tug yuav nrhiav tau ib tug tawv heev, txaus nyiam xiavlus Hawj txawm oxide zaj duab xis.

Browning phom loj tej kas tham

Tag nrho cov saum toj no txoj kev tsis burnishing nyob rau hauv tsev tsis heev muaj feem xyuam rau los phom chim. No ua hauj lwm muaj ib tug tshwj xeeb muaj pes tsawg leeg, uas yuav tsum tau yuav nyob rau hauv tshwj xeeb khw muag khoom noj. Nyob rau hauv cov ntaub ntawv xws li ib tug chaw muaj nyob rau hauv khw muag khoom muaj los rau ib co yog vim li cas nws siv yog undesirable, lub nram qab no yog ib tug zoo txoj kev uas yuav siv burnishing yeej nyob rau hauv tsev.

Raws li siv peev xwm stainless steel yeeb nkab ntawm haum lub cheeb thiab ntev. Ib kawg ntawm tus yeeb nkab yog ntim.

1. Yeej siv abrasive ntaub ntawv stripped ntawm xeb thiab qub bluing ces polished ib ncig ntawm lub felt.

2. Nyob rau ob hnub ntawm lub stems raug kaw nrog plugs resistant rau tshuaj cov neeg ua hauj. Lub nto ntawm lub workpiece yog degreased nyob rau hauv ob ua sawv. Ua ntej, tsuas wiped nrog roj thiab ces stems yog immersed rau nees nkaum feeb nyob rau hauv lub rhuab cov tshuaj rau 70 degrees. Muaj pes tsawg leeg ntawm cov tshuaj no raws li nram no: Ib tug liter ntawm dej, 50 g ntawm sodium hydroxide, thiab peb caug grams ntawm dej qab zib tshauv, tus nqi qub sodium phosphate, thiab 5 grams ntawm silica nplaum.

3. Yuav kom tshem tawm cov laus oxide zaj duab xis, siv tsib los yog tsis muaj zog etching. Lub chim yog dipped nyob rau hauv lub tsib feem pua cov kua ntawm sulfuric acid thiab khaws cia muaj rau ib feeb.

4. Cov yooj yim txheej txheem tshwm sim siv ib tug aqueous tov ntawm phosphoric acid (0.7 / 100), ammonium tshuaj dawb (6/100), sodium hyposulfite (8/100) thiab nitric acid (0.3 / 100). Yeej "siav" nyob rau hauv ib tug kub ntawm 70 DEG. rau ib teev.

5. Yuav kom txhim kho tau qhov uas ua oxide zaj duab xis, lub workpiece tau raus rau tsib feeb nyob rau hauv ib tug poov tshuaj bichromate tshuaj (120 g ib liter ntawm dej). Qhov kub ntawm 70 degrees tshuaj.

Tom qab cov hlau burnishing txoj kev nyob rau hauv lub tsev yog ua los ntawm meej ntxuav tej kas tham, thaum lawv nyob rau hauv txhua rooj plaub yuav tsis tau noj nrog liab qab ob txhais tes. Tshwj xeeb xim rau txhua ua txoj kev yuav tsum tau muab rau txoj kev ruaj ntseg ntsuas! Tag nrho cov tshuaj yog heev txhoj puab heev!