the applications of titanium alloy in building materials
Titanium alloy has been widely used in various industries and fields of national economy, playing a huge role. As the emerging structural building materials in the 21st century, titanium and titanium alloy have unparalleled physical and chemical properties: high specific strength, light weight, toughness, good weldability, but also has excellent corrosion resistance, without special maintenance comprehensive application life can reach more than one hundred years. In addition, the decorative performance of titanium metal is also very superior. Titanium and titanium alloy by oxidation treatment can form titanium dioxide film layer, titanium plate manufacturers in production due to the interference of light, different thickness of the film layer shows a variety of colors, the formation of color titanium alloy plate. A series of excellent properties of titanium make it fully meet the many performance requirements of building materials, so it is much favored by architects and construction industry. However, due to the high cost of materials and construction, it was mainly used in public buildings, such as international conference centers, large stadiums, museums and so on. With the development of the construction industry and the improvement of the aesthetic requirements of urban buildings, titanium material has been gradually applied to the general folk buildings in recent years. Due to the reasonable price of titanium plate, in addition to the early application of the roof, and gradually expanded to the exterior wall, ceiling, interior wall decoration, Bridges, monuments, sculptures, pipes, railings, signs and so on.
With the development of the construction industry, architects in recent years pursue to use more advanced building materials than traditional materials.
With the development of the construction industry, architects in recent years pursue to use more advanced building materials than traditional materials. As a new building material, titanium and titanium alloy have the following advantages.
(1) can meet the requirements of lightweight building materials
Titanium density is small, about 60% of steel, copper 50%, but has almost the same strength as ordinary steel, as a building can reduce the weight of 70% ~ 75%, easy to lift, and can make the center of gravity of the building moved down, improve the overall seismic capacity of the building.
(2) Good machinability and welding performance
Titanium and titanium alloy have good cold and hot working properties, and can be connected between components by the common welding process, and the surface of the titanium self-recovery oxide film can prevent welding damage. In addition, according to the needs of customers can also use a variety of secondary processing technology and means of titanium surface processing, such as etching, embossing, spinning, sandblasting, shot peening, electroplating and drilling.
(3) Good corrosion resistance
Titanium in the air quickly generates a layer of solid oxide film on its surface in situ, without the need of plating a layer of anticorrosive film, so that it in the oxidizing acid, alkali, salt medium, especially in the wet chlorine and seawater, has excellent corrosion resistance, can resist urban pollution, industrial radiation and extreme erosion, very suitable for the roof and wall of buildings.
(4) Low coefficient of thermal expansion
Compared with other metal building materials, the thermal expansion coefficient of titanium is small, about 50% of stainless steel, 30% of aluminum, and glass, brick, cement and stone close, suitable for its common. Titanium thermal stress is very low, stainless steel 1/2, aluminum 1/3, can be used as a whole material, do not need joints to taste thermal expansion and contraction.
(5) No environmental pollution
Due to the good corrosion resistance of titanium, titanium and titanium alloy materials can be 100% recycled, will not pollute the environment, can be called green environmental protection materials.
