Qhov kev paub ntxov tshaj plaws ntawm cov hlau tau pom nyob rau hauv cov khoom siv hlau khawb los ntawm qhov chaw archaeological hauv Anatolia (Kaman-Kalehöyük) thiab muaj ze li ntawm 4,000 xyoo, yos los ntawm 1800 BC. Horace txheeb xyuas cov riam phom hlau xws li falcata hauv Iberian Peninsula, thaum Noric steel tau siv los ntawm Roman tub rog.
Thaum twg rab ntaj hlau tau dhau los?
Kev siv Damascus hlau hauv ntaj tau nrov heev hauv 16th thiab 17th centuries. Nws tsuas yog los ntawm lub xyoo pua 11th uas Norman swords pib tsim tus ntoo khaub lig (quillons).
Thaum twg yog hom hlau tsim?
Steel pipe tau siv rau cov kab dej hauv Tebchaws Meskas txij thaum xyoo 1850s (Elliot 1922). Lub yeeb nkab yog thawj tsim los ntawm dov steel daim ntawv lossis daim hlau rau hauv cov duab thiab riveting cov seams. Txoj kev tsim no txuas ntxiv nrog kev txhim kho rau xyoo 1930s.
Thaum twg thawj cov riam phom tau tsim?
Nyob hauv Mesopotamian xeev ntawm Sumer, Akkad thiab Assyria, thawj zaug siv hlau mus txog deb rov qab, mus rau tej zaum 3000 BC. Ib qho ntawm cov khoom qub tshaj plaws smelted hlau paub yog rab riam nrog ib rab riam pom nyob rau hauv lub qhov ntxa Hattic hauv Anatolia, yos los ntawm 2500 BC.
leej twg ua ntej steel?
3rd Century AD
thawj cov hlau ntau lawm tau txais txiaj ntsig rau Tuam Tshoj. Nws ntseeg tau tias lawv siv cov txheej txheem zoo ib yam liDab tsi yog hu ua Bessemer txheej txheem, uas blasts ntawm huab cua tau siv los tshem tawm impurities los ntawm cov hlau molten.
