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Nickel alloy applications in various fields

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[Abstract]:
Nickel is a ferromagnetic metal element, with excellent properties such as corrosion resistance, high temperature resistance, oxidation resistance and good ductility. It is widely used in metallurgy, chemical industry, aerospace and other fields. It is an important raw material for the preparation of stainless steel, high temperature alloy, power battery and other materials, and belongs to the key strategic metal resources.

1.Chemical industry demand

  Pure nickel is generally used in chemical equipment corrosion resistant structural parts, precision instruments, electronic tubes and radio equipment parts and other fields, high purity nickel N4 in electrolysis, electroplating and other industries have a large demand, mainly for wide medium plate. Ultra-pure nickel is used in batteries and other fields. Thickness of 0.5mm~0.6mm pure nickel and N10276 cold rolled sheet in the plate heat exchanger manufacturing has a large demand. Iron-nickel-based corrosion-resistant alloy N08020 and N08028 plates are widely used in the preparation of oil and gas transmission pipelines. N08825 And pipeline steel composite pipelines in the large demand of the oil industry. Nickel-based corrosion resistant alloy N06600, N04400, N06625, N10276, corrosion resistance is excellent, the market demand is large, in the past a large number of are dependent on imports, now gradually began to localization. In order to save costs, reduce welds and improve safety, this industry mainly needs wide medium thickness plate, thickness of more than 6mm, width of more than 1800mm, length of more than 5000mm.

 

2.Electrical and electronic field demand

  Nickel alloy functional materials for electronic and electrical use are important aspects of nickel alloy application, which are mainly used in home appliances, IT manufacturing, information products and electrical products manufacturing. For example, the demand for nickel alloy strip for color TV manufacturing is very large, and the localization is less than 10%, which provides opportunities for the development of nickel-based precision alloy. But it requires very high technical capabilities and equipment strength.

 

3.Nuclear power and new energy field demand

  Nickel-based superalloy has good high temperature resistance, corrosion resistance or a specific environmental adaptability. In 2018, a total of seven nuclear power units were put into commercial operation. Although the nuclear power industry has great fluctuations in new growth every year, in the long term, it still maintains the growth trend. In the nuclear power equipment manufacturing industry, the superalloy materials are difficult to replace with their excellent characteristics such as high temperature resistance and high strength resistance, and they are mainly used in the nuclear islands that undertake the nuclear reaction work. The main components that use superalloy in nuclear power equipment include fuel unit, control rod, pressure vessel, evaporator, high temperature gas furnace heat exchanger, etc. These components need to withstand the high temperature of 600℃ ~800℃ when working, and need high creep strength, and the superalloy material must be used.

 

4.Demand in the aerospace sector

  At present, there is a big gap between the urgent nickel-based superalloy in China's aerospace field and foreign countries. The turbine blades of engines for domestic large aircraft, aviation and military aircraft need high-performance superalloys. After several generations of development of superalloy, the current foreign advanced aero-engines all use single crystal superalloy to manufacture single crystal turbine blades, which is very difficult, and there are many defects in manufacturing the domestic blades. The domestic research on the single crystal superalloy material and blade manufacturing is weak, and the manufacturing technology of the superalloy used in aerospace has become the key to restrict the development of related industries in China.

 

5.Needs in the medical field

  Titanium and nickel shape memory alloy is widely used in human heart stents, dental orthodontics and other fields. The main production units of domestic titanium-nickel memory alloy are concentrated in Beijing and Xi'an. With the gradual deepening of r & d investment in China's medical device industry, the technological innovation and material application of medical device products have developed rapidly, and the demand scale for high-tech materials such as shape memory alloy shows an obvious upward trend. The demand scale for shape memory alloy in China's medical field has reached 5 billion yuan. At the same time, the demand scale of aerospace, automobile, robotics and other emerging industries for shape memory alloy also shows a rapid growth trend.