Dab tsi yog cov khoom siv raw khoom feem ntau Forged los ntawm

Cov khoom siv ntawm rab rawg yog forged los ntawm cov khoom siv hlau, uas yuav tsum muaj cov khoom muaj zog toughness thiab hnav tsis kam, thiab muab faib ua manganese-muaj steel, tooj liab-muaj carbon steel, high-silicon tooj liab-muaj steel, thiab lwm yam. steel smelted los ntawm qhib-hearth rauv thiab oxygen converter yog dov tawm.