Titanium has excellent performance and has the reputation of "space metal". Titanium alloy is an important structural material. It is based on titanium and adds other elements such as vanadium, aluminum, molybdenum, and chromium. It is processed by smelting, forging, rolling, extrusion and other processes. It has low density and high specific strength. , The outstanding advantages of high heat resistance and strong corrosion resistance are widely used in high-end fields such as aerospace, petrochemical, national defense and military industry and medical biology.
Titanium Grade 2 Round Rods are widely used in aerospace due to their high corrosion resistance and high specific strength. In terms of hardness, titanium alloy is much harder than the other three alloys, and the tensile strength of titanium alloy is also the highest. Due to the weight factor also needs to be considered in the product structure, the density of zinc alloy is the largest and the specific strength is the smallest, and the specific strength of titanium alloy is higher. At the same time, due to its strong corrosion resistance and heat resistance, titanium alloys are widely used in aircraft engine parts, rocket and missile structural parts.
Titanium processing technology is complex, difficult, and has high technical barriers. The production process of titanium material includes titanium ingot or titanium alloy ingot obtained by melting and casting of sponge ASTM F136 6Al-4V ELI Titanium Bar, and then the company makes titanium material through deformation treatment and machining in forging, rolling and other links according to customer needs and application field requirements, and further. Processed into titanium equipment. The smelting, pressure processing and heat treatment of titanium are relatively difficult, the process is complex, and the technical content is high. Among them, the preparation steps of titanium sponge and titanium materials are more complex and difficult to prepare, which are the key links in the application of titanium. Sponge titanium and titanium The quality of the material directly determines the quality of titanium products.
Domestic casting process: vacuum consumable arc melting (VAR) and cooling bed furnace melting (CHM) in parallel. Due to the high chemical activity of titanium, it will react with hydrogen, oxygen, nitrogen and most refractories in the air in the molten state, so the casting must be carried out in a vacuum or an inert atmosphere. At present, there are two mainstream melting and casting processes in the world: vacuum consumable arc melting (VAR) and cooling bed furnace melting (CHM). The advantage of the VAR method is that the process is mature and the operation is simple. There have been many metallurgical defects such as inclusions and composition segregation in the alloy ingot, which seriously affect the reliability of the material. In recent years, Chinese titanium companies have introduced several electron beam cold hearth melting and casting furnaces and plasma cold hearth melting and casting furnaces from the United States and Germany, and gradually adopt the VAR method and the CHM method in parallel for casting.
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