killed steel การใช้

• It produces various Killed and Semi-Killed steels.
• The main disadvantage killed steels is that it suffers from deep pipe shrinkage defects.
• The yield of rimmed and capped steel is slightly better than that of semi-killed steel.
• The porosity eliminates the pipe found in killed steel and increases the yield to approximately 90 % by weight.
• Semi-killed steel is mostly deoxidized steel, but the carbon monoxide leaves blowhole type porosity distributed throughout the ingot.
• The product is aluminum-killed steel, with high tensile strength achieved by the composition with manganese, chromium and silicon.
• Killed steel is steel that has been completely deoxidized by the addition of an agent before casting, so that there is practically no evolution of gas during solidification.
• Semi-killed steel is commonly used for structural steel with a carbon content between 0.15 and 0.25 % carbon, because it is drawing applications.