Kev txiav txim siab ntawm chromium hauv siab carbon ferrochrome hmoov
Tso lus
High carbon ferrochrome yog tsuas yog siv nyob rau hauv stainless hlau ntau lawm, txhim kho lub hardenability ntawm hlau, nce lub hnav tsis kam thiab hardness ntawm hlau; Siv los ua ib qho ntxiv rau cam khwb cia hlau los txhim kho qhov hnav tsis kam thiab hardness ntawm cam khwb cia hlau. Raws li ib qho ntawm cov khoom tseem ceeb ntawm peb lub tuam txhab, peb lub tuam txhab yuav muab koj cov lus qhia luv luv ntawm cov txheej txheem ntawm kev txiav txim siab chromium nyob rau hauv siab carbon ferrochrome raws li kev nkag siab ntawm siab carbon ferrochrome ntau xyoo.
Ua ntej, {{0}}.1000g qauv yog hnyav nyob rau hauv ib tug npib tsib xee crucible, 2g poov tshuaj hydroxide tau ntxiv, thiab 0.5 g poov tshuaj nitrate tau them rau hauv lub qhov cub Muffle ntawm 700 degree . Tom qab melting rau 15 feeb, cov qauv yog txias thiab muab tso rau hauv ib tug 300ml beaker. Ntxiv 50ml deionized dej, npog cov tais diav, tom qab cov tshuaj tiv thaiv khaus, kub thiab boil rau 10 feeb, tshem tawm thiab qhov chaw, ntxuav tawm lub crucible thiab npog nrog dej, ntxiv 20ml sulfuric acid, tshav kub kom txog thaum boiling, tshem tawm me ntsis txias, txav mus. kev daws rau 500ml conical lub raj mis.
Tom qab ntawd, ntxiv 10ml phosphoric acid, dilute nrog dej mus rau 250ml, co zoo, ntxiv 10ml silver nitrate tov, 20ml ammonium persulfate tov, co zoo, tshav kub. Cov ntsiab lus ntawm manganese nyob rau hauv cov qauv yog tsawg, yuav tsum tau ntxiv ob peb tee ntawm poov tshuaj permanganate, boil kom txog thaum cov tshuaj muaj ib tug ruaj khov sawv liab xim] mus rau boil rau 5 feeb, tshem tawm.
Tom qab ntawd, ntxiv 10ml sodium chloride tov thiab boil kom txog thaum lub redness ploj. Txuas ntxiv boiling rau 8-10 feeb kom cov nyiaj chloride precipitate, coagulate thiab dab dej. Tshem tawm thiab txias rau chav tsev kub. Titrate nrog ammonium ferrous sulfate txheem tov kom txog rau thaum cov tshuaj yog lub teeb daj, ntxiv 3 ~ 5 tee ntawm phenylanthranilic acid qhia, txuas ntxiv titrating kom txog rau thaum lub Rose xim ploj mus thiab tig mus rau ci ntsuab raws li qhov kawg taw tes, peb yuav tsum tau txo lub ntim V noj. los ntawm ammonium ferrous sulfate txheem tov.
