Hlau yog cov khoom siv hlau uas siv dav hauv kev tsim kho, tsim khoom, tsheb thauj mus los thiab lwm yam haujlwm. Nov yog qee qhov kev qhia txog steel.
1. Kev txhais ntawm steel:
Hlau yog cov khoom siv hlau uas muaj hlau thiab carbon. Feem ntau, cov ntsiab lus carbon nyob rau hauv cov hlau yog li ntawm 0.02% mus rau 2.1%.
2. Kev faib tawm ntawm cov hlau:
Raws li muaj pes tsawg leeg thiab kev ua tau zoo, cov hlau tuaj yeem muab faib ua carbon steel, alloy steel thiab stainless hlau. Cov pa roj carbon steel yog hom hlau ntau tshaj plaws, uas muaj cov ntsiab lus qis dua. Alloy steel muaj lwm yam alloying ntxiv xws li chromium, npib tsib xee, molybdenum, thiab lwm yam los muab cov khoom tshwj xeeb. Stainless hlau yog resistant rau corrosion.
3. Kev tsim cov hlau:
Muaj ob txoj hauv kev tseem ceeb ntawm kev tsim cov hlau, uas yog hlau ua thiab smelting. Ironmaking yog cov txheej txheem ntawm kev txo cov hlau ore ntawm qhov kub thiab txias kom tau txais npua hlau, thiab tom qab ntawd tsim cov hlau los ntawm kev ntxiv cov ntsiab lus alloying tsim nyog thiab tswj cov txheej txheem. Smelting yog kev tsim cov hlau los ntawm cov khoom siv rov ua dua tshiab thiab rov ua dua tshiab.
4. Cov qauv hlau:
Ntau lub teb chaws thiab cheeb tsam muaj lawv tus kheej cov qauv hlau, xws li Tuam Tshoj tus GB / T, Tebchaws Asmeskas 'ASTM, Lub Tebchaws Yelemees's DIN, thiab lwm yam. Cov qauv no qhia txog cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, kev siv tshuab thiab lwm yam kev xav tau ntawm cov hlau.