Tooj tooj hlau no hlau yuav tsum tau to taub zoo heev, uas yog feem ntau ntawm cov xov hlau nyob rau hauv lub tooj liab hlau. Txawm li cas los xij, muaj ntau hom tooj liab, xws li: tooj liab liab, tooj liab, tooj dag, tooj liab dawb, thiab lwm yam, txawm hais tias cov saum toj no tau suav tias yog cov khoom qub, tab sis tseem muaj qhov sib txawv ntawm txhua qhov. Ntawm no nrog peb hnub no yog ib txoj hauv kev me me los qhia qhov txawv ntawm liab tooj liab thiab tooj dag.
1. Cov tooj liab liab yog dab tsi? Liab tooj liab, tseem hu ua liab tooj liab, yog tooj liab elemental, vim nws cov xim saum npoo yog xim liab thiab muaj npe. Ua ke, vim nws kuj muaj xim liab liab, thiab qhov saum npoo yog xim liab tom qab tsim cov oxide zaj duab xis, nws kuj yog feem ntau hu ua tooj liab. Nws yog tooj liab muaj qee yam oxygen, yog li nws tseem hu ua oxygen-muaj tooj liab. Tooj liab yog ib qho kev lag luam ntshiab tooj liab nrog lub melting point ntawm 1083 degree C thiab tus txheeb ze ntom ntawm 8.9, uas yog 5 npaug ntawm magnesium hlau, tsis muaj isomerism hloov. Qhov loj ntawm tib lub ntim yog kwv yees li 15% ntau dua li cov hlau dav dav, thiab ntau yog siv rau hauv kev tsim cov cables, xov hlau, txhuam, electrocorrosion tooj liab thiab lwm yam khoom uas yuav tsum tau siv hluav taws xob zoo heev.
2. Dab tsi yog tooj dag? Brass yog ib qho alloy ntawm tooj liab thiab zinc. tooj dag uas muaj tooj liab thiab zinc yog hu ua tooj dag; Yog tias nws yog ntau hom alloys uas muaj ntau tshaj li ob lub ntsiab lus, nws yog hu ua tooj dag tshwj xeeb, xws li tooj liab alloys muaj li ntawm manganese, npib tsib xee, txhuas, tin, hlau, thiab silicon. Nws muaj qhov zoo ntawm hardness siab, siab zog thiab muaj zog tshuaj corrosion kuj. Brass feem ntau yog siv rau hauv kev tsim cov li qub, kav dej, cua txias ntsuas thiab txais tos thiab radiators.
3, Qhov txawv ntawm liab tooj liab thiab tooj dag? (1) Kev kuaj tooj liab thiab tooj liab liab, thiab koom ua ke, yuav npuas yog tooj dag, thiab liab tooj liab yuav luag tsis npuas; (2) Lub hardness ntawm cov hlau yog ntau dua li ntawm ib qho kev tivthaiv hlau, yog li lub hardness ntawm tooj dag yog ntau dua li ntawm liab tooj liab; (3) Lub melting point ntawm cov alloy yog qis dua li ntawm ib qho kev tivthaiv hlau, uas yog, lub melting point ntawm liab tooj liab yog siab dua li ntawm tooj dag.
Qhov tseeb, tsis muaj teeb meem dab tsi ntawm tooj liab lawv muaj lawv tus kheej qhov zoo thiab qhov tsis zoo, hauv lawv txoj kev siv kuj tseem dav heev.
