Muaj ntau ntau hom hlau tsis xeb - qhib-hearth, austenitic, ferritic los yog sib xyaw. Lawv cov cuab yeej yog qhov tsis kam nrog cov huab cua hauv qhov chaw huab cua thiab nruj. Lawv tau ua los ntawm cov hlau tsis huv, suav nrog cov khoom siv hauv tsev, yog li qhov yuav tsum paub qhov txawv ntawm lwm qib ntawm cov hlau yuav tshwm sim hauv tsev.
Nws yog qhov tsim nyog
- - hlau nplaum;
- - kev daws teeb meem alkali (sodium los yog potassium hydroxide);
- - concentrated nitric acid;
- - cov hlab siv tshuaj;
- - kuaj cov pipette;
- - vinegar;
- - dej qab zib;
- - ntaub ntawv;
- - hnyav;
- - khaub ncaws.
Cov Lus Qhia
Kauj ruam 1
Cov hlau yog hlau tsis muaj hlau. Txhawm rau txiav txim siab seb cov hlau puas suav nrog cov khoom txhua, nqa cov hlau nplaum tas mus li. Cov hlau nplaum yog nyiam rau ib qho khoom ua los ntawm cov hlau hlau. Yog tias qhov no tsis tshwm sim, tom qab ntawd cov khoom tsim tawm ntawm lwm cov khoom siv. Sab nraud, titanium feem ntau zoo ib yam li steel hlau, tab sis tej zaum yuav muaj ib qho txhuas hlau. Koj tseem tuaj yeem sib txawv nws ntawm titanium los ntawm qhov hnyav, nws hnyav dua qhov hnyav.
Kauj ruam 2
Cov tshuaj tiv thaiv nrog alkali. Yog tias koj tab tom cuam tshuam nrog cov ntawv steel, tom qab ntawd lye lye rau hauv lub raj sim, thiab tom qab ntawd nqos qee qhov sawdust nyob ntawd. Siv lub pipette los tso qee qhov alkali rau ntawm daim hlau los yog tais. Stainless hlau, tsis zoo li alloys alloys, tsis hnov mob nrog alkalis. Xim av xeb xeb me ntsis ntawm hlau hydroxide daim ntawv nyob rau saum npoo ntawm cov dog dig hlau. Nws yog ib qho tsim nyog yuav tau coj mus kuaj lub raj xa dej, uas yog lub khob iav, uas tau clamped nrog tus ntiv tes los ntawm qhov qhib sab nraud. Tus kav raj xa dej yuav tsis ua haujlwm vim tias kua qaub lossis alkali yuav xeb cov roj hmab.
Kauj ruam 3
Kev sim nrog kua qaub. Nqa cov tshuaj tiv thaiv nyob rau hauv tib txoj kev ib yam li nrog alkali. Nws yog qhov zoo tshaj plaws rau noj cov muaj zog nitric lossis sulfuric acid. Cov hlau tsis huv yog tshaj tawm nrog cov kua qaub rau hauv kev tawm tsam nrog cov kev hloov kho ntawm hydrogen. Stainless hlau tsis hnov mob nrog pab pawg no, vim hais tias nws muaj alloying ntxiv. Lawv yog cov inhibitors ntawm qhov tshuaj tiv thaiv no. Chromium, vanadium thiab lwm yam tshuaj yeeb siv yog cov tshuaj muaj yees ntxiv.
Kauj ruam 4
Yog tias koj muaj cov ntawv loj ntawm cov hlau, nws yuav ua kom paub tseeb tias nws yog txhua tus hlau, tsis yog lo lus xwb. Siv cov ntawv los yog ntawv kub ceev los ntxuav thaj chaw, tshem tawm cov theem sab saum toj ntawm hlau los ntawm nws. Tom qab ntawd hnov mob nrog kua qaub thiab alkali.
