Low-carbon and low-silicon Al-Mn-Ti-Fe alloy for deoxidation and alloying of molten steel

Abstract

The invention discloses a low-carbon and low-silicon Al-Mn-Ti-Fe alloy for deoxidation and alloying of molten steel, which is prepared by the following raw materials by weight percent: 20-65% of Al, 1-20% of Mn, 0.5-15% of Ti, not more than 1.0% of C, not more than 1.5% of Si and the balance of Fe. The low-carbon and low-silicon Al-Mn-Ti-Fe alloy has the benefits that the iron alloy is characterized by high-efficient final deoxidation capacity, low-carbon and low-silicon, and can effectively improve the deoxidation of the molten steel, improve the inclusion capacity in steel, realize low carbon increase and silicon increase, and meet the production need of a low-carbon and low-silicon high-manganese type steel. The alloy has larger specific weight, so that the yielding rate of the alloy is high and the alloy can effectively reduce the consumption cost of the steelmaking final deoxidation alloy, simultaneously effectively solve the weakness of the conventional Al and Mn-containing alloy powdering through the reasonable micro-alloy component matching, and be stored for a long time without being powered. In addition, due to the existence of titanium in the Al-Mn-Ti-Fe alloy, the alloy can effectively improve the component organization of the high-strength and low-alloy steel and improve the corrosion resistance performance and the welding performance of the steel.

Description

(1) Technical field [0001] The invention relates to a final deoxidation alloy for steelmaking, in particular to a low-carbon, low-silicon, aluminum-manganese-titanium-iron alloy used for final deoxidation and alloying of molten steel. (2) Background technology [0002] With the development of the production and development of steelmaking varieties, the requirements for final deoxidized alloys for steelmaking are getting higher and higher. In the field of steelmaking technology, the conventional final composite deoxidized alloys have relatively high carbon and silicon content and small specific gravity. It is suitable for the production of low-carbon, low-silicon and high-manganese series steels in current steelmaking, resulting in unstable composition of molten steel, poor ability to remove inclusions in molten steel, high cost of use and unsatisfactory steel properties. The market needs a stable low-carbon low-carbon steel. Silicon composite aluminum final deoxidation alloy...

AI Technical Summary

Problems solved by technology

[0002] With the development of the production and development of steelmaking varieties, the requirements for final deoxidized alloys for steelmaking are getting higher and higher. In the field of steelmaking technology, the conventional final composite deoxidized alloys have relatively high carbon and silicon content and small specific gravity. It is suitable for the production of low-carbon, low-silicon and high-manganese series steels in current steelmaking, resulting in unstable composition of molten steel, poor ability to remove inclusions in molten steel, high cost of use and unsatisfactory steel properties. The market needs a stable low-carbon low-carbon steel. Silicon composite aluminum final deoxidation alloy