The capillary titanium alloy pipe is atomized by pyrogen and the granules in the molten state are severely attacked at a high speed to the surface of the cleaned and unsmooth substrate to produce the required coating. The moment the particles hit the surface of the substrate hard, it will be deformed, and with the help of the "England" effect, a coating with a lamellar structure is produced. With many "overlapping continuous accumulation" of plastic deformation particles, the fusion between particles should be mostly mechanical equipment, and there must be a certain number of holes. In addition, if painting is carried out in the air, there is likely to be metal in the coating. mixed with oxides.
Titanium tubes are mainly used to make aero-engine compressor components, followed by rockets, cruise missiles and structural parts of high-speed airports. In the middle and late 1960s, titanium and aluminum alloys have been used in general industrial production to make electric grades for electrolytic industrial production, coolers in power plants, electric heaters for crude oil refining and seawater desalination equipment and their air pollution. Manipulating equipment, etc. Titanium and aluminum alloys have become a corrosion-resistant structural raw material. In addition, it is also used to produce hydrogen storage raw materials and shape memory alloys.
Capillary titanium alloy tube is a new key structural raw material used in aerospace industry production. Its proportion, compressive strength and application temperature are close to the middle of aluminum and steel, but it has high specific strength and excellent sea surface corrosion resistance and low temperature characteristics. In 1950, the United States used the F-84 fighter-bomber for the first time as a non-stressed prefabricated component such as the rear shell insulation material, wind deflector, and tail rudder cover. In the 1960s, the application position of Grade 9 Ti3Al2.5V Titanium Tube was gradually changed from the rear shell to the middle shell, and part of the structural steel was replaced to manufacture key prefabricated components such as bulkheads, beams, and flap guides. The use of titanium alloys in military aircraft has increased rapidly, reaching 20% to 25% of the net weight of the airport structure. Since the 1970s, titanium alloys have been gradually used in civil aircraft. For example, the amount of titanium used in Boeing 747 passenger aircraft reaches more than 3640KG. Titanium for airports with Mach numbers lower than 2.5 is mainly to better replace steel to ease the net weight of the structure. Another example is the American SR-71 high-speed fighter plane (the flight Mach number is 3, and the aircraft flight altitude is 2621 two meters), titanium accounts for 93% of the net weight of the airport structure, which is called "all titanium" airport.
When the thrust-to-weight ratio of the aircraft engine is increased from 4 to 6 to 8 to 10, and the temperature of the compressor inlet and outlet is increased from 200 to 300 °C to 500 to 600 °C, the bottom pressure compressor discs and blades originally made of aluminum It is necessary to change to titanium alloy, or use titanium tube instead of stainless steel plate to manufacture high-pressure compressor discs and blades to reduce the net weight of the structure. In the 1970s, the use of titanium tubes in aircraft engines generally accounted for 20% to 30% of the total weight of the structure, and it was mainly used to manufacture compressor components, such as forged titanium cooling fans, compressor discs and blades, cast titanium compressors Receiver, intermediary company receiver, rolling bearing housing, etc. The space shuttle mainly uses the high specific strength, corrosion resistance and cold resistance properties of titanium tubes to manufacture a variety of high-pressure containers, natural material storage tanks, standard parts, equipment bandages, structures and rocket casings. Synthetic earth communication satellites, lunar modules, manned spacecraft and spacecraft also use titanium tube sheets for welding.
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