Cov hau kev rau kev kho cov hlau dub

Lub hauv paus ntsiab lus: los ntawm kev kho tshuaj lom neeg, ib txheej ntawm cov yeeb yaj kiab oxide yog tsim tawm ntawm cov hlau saum npoo av, thiab cov kev kho saum npoo av tau tiav los ntawm cov yeeb yaj kiab oxide. Lub hauv paus ntsiab lus siv nyob rau hauv cov txheej txheem kev kho mob saum npoo deg no yog tsim cov yeeb yaj kiab oxide ntawm cov khoom siv hlau, uas tuaj yeem cais cov hlau los ntawm kev sib chwv nrog sab nraud ib puag ncig.

Cov txheej txheem sib xws rau cov hlau dub stainless hlau yog raws li hauv qab no:

Qeb 1: Cov Qauv Acid Xim

(1) Molten Dichromate txoj kev. Tej zaum tov cov hlau stainless hauv moltt sodium Dichromate daws thiab do kom huv si rau 20-30 feeb rau daim xim dub oxide zaj duab xis. Tshem tawm thiab txias, tom qab ntawd yaug nrog dej.

(2) Chromate Dub oxidation txoj kev. Cov txheej txheem ntawm cov xim hloov ntawm cov yeeb yaj kiab no yog los ntawm lub teeb kom tsaus. Thaum nws hloov los ntawm lub teeb xiav kom tob xiav (los yog ntshiab dub), lub sij hawm luv tsuas yog 0.5-1 feeb. Yog tias qhov pom tau zoo no tau ploj, nws yuav rov qab mus rau lub teeb xim av thiab tsuas yog muab tshem tawm thiab rov ua xim.

2. Vem tus qauv vulcanization tuaj yeem tau txais ib zaj duab xis dub zoo nkauj, uas yuav tsum tau pickled nrog aqua regia ua ntej oxidation

3. Alkaline Oxidation txoj kev. Alkaline Oxidation yog ib txoj kev daws teeb nrog sodium hydroxide, nrog lub sijhawm oxidation ntawm 10-15 feeb. Cov yeeb yaj kiab oxide dub tau hnav zoo thiab tsis tas yuav kho kev kho mob. Lub sijhawm ntsev kom ntau nyob nruab nrab ntawm 600-800 teev. Tuaj yeem tswj tau qhov zoo ntawm cov hlau tsis muaj xeb.

Qeb 2: Electrolytic oxidation txoj kev

Kev npaj daws: (20-40g / l dichromate, 10-40g / l manganese sulfate, 10-20g / l boric acid, 10-20g / l / ph3-4). Cov yeeb yaj kiab xim tau soaked nyob rau hauv 10% kev daws teeb meem ntawm 25c rau 5 feeb, thiab tsis muaj xim zoo nkauj ua haujlwm tiv thaiv ntawm cov duab tais txheej. Tom qab electratory stainless hlau yog blackened sai sai, thiab tom qab ntawd cov zaj duab xis nrog cov xim dub, elasticity, thiab ib co lej ntawm hardness. Cov yam ntxwv yog cov txheej txheem yooj yim, ua kom nrawm nrawm nrawm nrawm, ua kom muaj txiaj ntsig zoo, thiab cov zoo corrosion tsis kam. Nws yog qhov haum rau cov xim dub dub ntawm ntau cov hlau loj thiab yog li ntawd muaj ntau cov peev txheej.

Qeb 3: QPQ Kev Kho Cua Sov Txoj Kev Kub

Ua rau hauv cov cuab yeej tshwj xeeb, cov yeeb yaj kiab txheej yog ruaj thiab muaj kev hnav zoo; Txawm li cas los xij, vim muaj qhov tseeb uas Stainless hlau, tshwj xeeb tshaj yog Austenitic Stainless hlau, tsis muaj tib qho kev tiv thaiv muaj peev xwm ua ntej tom qab kev kho mob. Qhov laj thawj yog tias cov ntsiab lus chromium nyob rau saum npoo ntawm Antenenitic Stainless hlau tau raug puas lawm. Vim tias nyob rau hauv cov txheej txheem dhau los ntawm qpq, uas yog cov txheej txheem nitrived, carbon thiab nitrogen cov ntsiab lus yuav infletrate, ua rau kev puas tsuaj rau cov qauv deg. Yooj yim rau xeb, ntsev tshuaj txau tsis zoo yuav xeb hauv ob peb teev. Vim tias qhov tsis muaj zog no, nws txoj kev xav tau tsawg.