Cov yeeb nkab tooj liab melting ntev ntev hauv ib qho: nws muaj zog, nrog lub zog siab ntawm cov hlau dav dav; ua ke nrog ntau dua li cov hlau dav dav yog yooj yim khoov, hloov tau yooj yim, tsis yooj yim rau tawg, tsis yooj yim tawg, thiab muaj qee yam kev tiv thaiv kom khov thiab nthuav thiab cuam tshuam, thiab yog li ntawd lub tsev ntawm cov khoom siv dej hauv lub tooj liab dej yeeb nkab ib zaug ntawm cov cuab yeej siv, kev siv kev nyab xeeb thiab txhim khu kev qha, thiab txawm tias tsis tas yuav muaj kev tiv thaiv thiab tu. Copper yeeb nkab kev ntxhib los mos consolidation, tsis yooj yim rau corrode, thiab siab kub, siab siab, tuaj yeem siv rau ntau qhov chaw. Piv nrog rau qhov no, ntau lwm cov yeeb nkab tsis xws luag yog qhov tseeb, xws li yav dhau los nyob rau hauv qhov chaw nyob ntawm galvanized steel yeeb nkab, yooj yim heev rau corrode, kev siv lub sij hawm ntev yuav raug nthuav tawm nrog cov kais dej daj, dej ntws ua me me thiab lwm yam teeb meem. . Kuj tseem muaj qee cov ntaub ntawv nyob rau hauv qhov kub thiab txias ntawm lub zog ntawm agile poob rau hauv cov yeeb nkab dej kub yuav tshwm sim thaum muaj kev phom sij ntawm kev ruaj ntseg, thiab qhov melting point ntawm tooj liab mus txog 1083 degrees Celsius, qhov kub ntawm cov dej kub ntawm qhov system. tooj liab yeeb nkab yog negligible. Archaeologists nyob rau hauv Egyptian pyramids pom 4,500 xyoo dhau los, tooj liab kav dej, tseem siv tau.
Copper cov tshuaj stability, yuav txias, kub, siab, corrosion thiab hluav taws kub (tooj liab melting point txog li 1083 degrees Celsius) thiab lwm yam ntxwv ntawm ib tug ua ke ntawm txawv ib puag ncig yuav siv tau ntev. Lub neej ntawm cov yeeb nkab tooj liab tuaj yeem siv nrog lub tsev lub neej ntev, lossis ntev dua, piv txwv li, Peking Union Medical College Tsev Kho Mob hauv xyoo 1920s tau teeb tsa cov kav dej tooj liab tom qab ntau tshaj 70 xyoo, thiab tseem ua haujlwm zoo heev. Nws tuaj yeem pom tau tias cov yeeb nkab tooj liab yog ntau tshaj li ib puas xyoo ntawm lub sij hawm thiab kev ua tau zoo los ua kom tiav cov yeeb nkab. Copper txheej ntawm cov kav hlau thiab cov kav hlau tsis yog hlau hauv ib qho. Nws yog ntau tshaj li cov yas yeeb nkab sib sau ua ke, nrog rau cov hlau dav dav ntawm lub zog siab (txias-taws tooj liab yeeb nkab lub zog thiab tib phab ntsa tuab ntawm cov yeeb nkab steel tsim nyog); Nws yog yooj yim dua li cov hlau dabtsi yog khoov, zoo kuj thiab siab ductility, nrog zoo heev kev co, tej yam kuj thiab anti-freezing thiab expansion muaj nuj nqi. Lub raj tooj liab tuaj yeem lees txais qhov txias txias thiab kub kub, los ntawm -196 degrees mus rau 250 degrees siv tau ntau yam, thiab ua rau muaj kev hloov pauv kub (- kub kub - qis kub - kub kub -), kev siv cov kev ua haujlwm yuav tsis yog vim siv sij hawm ntev thiab qhov kub thiab txias ntawm qhov kev hloov pauv loj thiab poob qis, yuav tsis tshwm sim. Daim ntawv thov kev ua haujlwm yuav tsis poob vim kev siv mus sij hawm ntev thiab kev hloov pauv ntawm qhov kub thiab txias, thiab tsis muaj qhov tshwm sim ntawm kev laus yuav tshwm sim. Qhov no yog cov yeeb nkab zoo tib yam ua tsis tau.
Txawm koj xav taucov kav dej tooj liab, tooj liab rods ,tooj liab daim hlau, peb muaj cov khoom thiab kev txawj ntse kom tau raws li koj xav tau.
