The atomic weight of titanium is 47.90. The outer electronic structure is 3d4s. Melting point 1667 degree . Boiling point 3285 degree . Density (20 degree ) 4.5g/cm3. Titanium has relatively active chemical properties and can form stable compounds with oxygen, nitrogen, sulfur, and carbon.
Titanium iron is used as a deoxidizer, degasser, and carbon sulfur stabilizer in steelmaking. The production of killed steel using titanium deoxidation can reduce segregation in the upper part of the steel ingot, improve the quality of the steel, and increase the yield of the steel ingot. Titanium can combine with nitrogen dissolved in molten steel to form stable titanium nitride, which can eliminate the adverse effects of nitrogen on steel properties. Titanium reacts with sulfur in the molten steel to form titanium sulfide, which can eliminate the formation of iron sulfide that causes thermal embrittlement. Titanium and carbon generate extremely stable titanium carbide, and the particles of titanium carbide can prevent the growth of steel grains, refine the structure of steel, and improve the strength of steel. The chemical affinity between titanium and carbon is greater than that between chromium and carbon. Adding titanium iron to stainless steel to fix carbon can eliminate the depletion of chromium at the grain boundaries of stainless steel and improve its corrosion resistance. In recent years, titanium has been used as a microalloying element to produce high-strength low alloy steel. Adding titanium to cast iron helps to generate fine-grained graphite, and also plays a role in degassing, nurturing, purifying, and refining the casting structure, improving the wear resistance of castings. Adding titanium to heat-resistant cast iron can improve the heat resistance of cast iron components. In addition, titanium containing composite alloys are used as additives in the production of superalloys and aluminum alloys. The use of titanium iron as a coating component in welding electrodes can improve welding quality.
Titanium iron is a special alloy with a wide range of uses. It is added as an alloying element in the steelmaking process to refine the grain structure, fix the interstitial elements (C, N), and improve the strength of the steel. When smelting stainless steel and heat-resistant steel, titanium and carbon combine to form stable compounds, which can prevent the formation of chromium carbide, thereby reducing intergranular corrosion and improving the welding performance of chromium nickel stainless steel. The product of deoxidation with titanium is easy to float up, and deoxidation with titanium can reduce the segregation on the upper part of the steel ingot, thereby improving the quality of the steel ingot and increasing the yield of the steel ingot. Titanium combines with nitrogen dissolved in molten steel to form a stable and insoluble titanium nitride. High titanium iron is an indispensable alloy material for smelting iron-based high-temperature alloys and high-quality stainless steel. With the improvement of steel quality and the increase of varieties, the requirements for the quality and variety of titanium iron are becoming higher and higher. The international market has a high demand for high titanium content high titanium iron, but currently, China's ferroalloy factories generally only produce ordinary medium and low titanium iron. For high titanium iron with w (Ti)=65%~75% and w (Al) Less than or equal to 4%, few manufacturers have officially produced it.