What are titanium bars used for?（1）
Titanium is a very light, smooth and durable metal, Grade 5 titanium bar is widely used in manufacturing to make products durable, smooth and long lasting.
Titanium Production
Titanium rods are produced from sponge titanium through a series of processes. The first is the production of titanium sponge, which involves the chlorination of chlorinated rutile ore, which is obtained from beach sand. Coke and chlorine are mixed with rutile to form titanium tetrachloride, which then reacts with magnesium in a closed system. A vacuum distillation process is used to remove magnesium and magnesium so that it can be recycled.
In an electron beam furnace or a vacuum interrupter, the sponge is melted with alloying elements such as aluminium, vanadium, tin, zirconium and molybdenum. It will produce re-castable electrodes which can be die-cast or VAR smelted into slabs - Titanium rods are obtained by further processing cast or forged slabs and are widely used in aviation, aerospace, chemical, petroleum, electric power, Medical, construction, sporting goods and other fields. Many countries in the world have recognized the importance of titanium alloy materials, researched and developed them one after another, and obtained practical applications.
Aerospace
Titanium used in the aerospace field is concentrated in Western countries, especially the United States, and most Grade 5 titanium bars are applied to this field. Asian countries, Japan and China all input about one-tenth of titanium in this field. However, with the rapid development of aerospace in Asia in recent years, the consumption of titanium in the aerospace field will increase accordingly. From a global perspective, the aviation industry plays a decisive role in the titanium market. Historically, the big cycles of the titanium industry are closely related to the changes in the aviation industry.
In 2011, the global titanium production reached 148,000 tons, of which about 64,000 tons were used for commercial aviation. The future global economic growth will still have a huge demand for air transport. It is estimated that the demand for new aircraft will be about 30,000 in the next 20 years. At the same time, the demand for titanium in new aircraft is higher than that in old aircraft, and it is estimated that the average demand for titanium in commercial aircraft will reach 40 tons per aircraft in 20 years; based on this calculation, the demand for titanium in the global commercial aviation field will increase in the next 20 years About 1.2 million tons, with a compound annual growth rate of about 17%, an average annual increase of 60,000 tons of titanium material demand, and the field of civil aviation titanium materials will show rapid growth. New opportunities will also emerge in the field of military aviation; due to the tense global geopolitical situation and the increase in military spending by countries around the world, new demand in the field of military aviation is also expected to emerge.
Civil airliner
(1) Reduce structural weight and improve structural efficiency: Advanced combat performance (such as supersonic aircraft) requires the aircraft to have a relatively low structural weight coefficient (ie: body structural weight/aircraft normal take-off weight), while titanium alloys have strengths close to The characteristics of medium-strength steel but low density can replace structural steel and high-temperature alloys, which can greatly reduce the structural weight and save costs; taking engines as an example, statistics show that for every kilogram of aircraft engine weight reduced, the operating cost Available for about $220-440 down.
(2) Meet the requirements of high-temperature parts: titanium alloy has the characteristics of good heat resistance, such as the commonly used Ti-6Al-4V can work for a long time at 350 ° C, so it can be used in high-temperature parts of the aircraft (such as the rear fuselage, etc.) Replacement of aluminum alloys that cannot meet the requirements due to high-temperature performance; TC11 can work for a long time at 500 ° C, and can replace high-temperature alloys and stainless steel in the compressor part of the engine.
(3) Comply with the requirements of matching the structure of composite materials: In order to reduce the structural weight and meet the requirements of stealth, advanced aircraft use a large number of composite materials. The strength and stiffness of titanium alloy and composite materials are well matched, and a good weight reduction effect can be obtained. . At the same time, since the potentials of the two are relatively close, galvanic corrosion is not easy to occur, so the structural parts and fasteners in the corresponding parts should be made of titanium alloy.
(4) Meet the requirements of high corrosion resistance and long life: titanium alloy has high fatigue life and excellent corrosion resistance, which can improve the corrosion resistance and life of the structure, and meet the high reliability and long life of advanced aircraft and engines requirements.
Military aircraft
The development and procurement of military weapons are constantly developing in the direction of lightness and flexibility. In order to meet the combat performance requirements of fighter jets, in addition to the use of advanced design technology, materials with excellent performance and advanced manufacturing technology must also be used. One of the important measures is to select a large number of titanium alloys and improve the application level of advanced titanium alloys. Since the 1960s, the amount of titanium used in foreign military aircraft has increased year by year. At present, the amount of titanium alloy used in various advanced military fighters and bombers designed in Europe and the United States has stabilized at more than 20%, and the proportion of titanium used in new models is increasing significantly. promote.
