Since its emergence, nodular cast iron has been widely used in the production of cast iron pipe fittings, auto parts, engine crankshaft, machine tool parts, wind power parts, etc. because of its excellent mechanical properties and low production cost, and can replace some cast steel and structural steel
It is one of the important metal materials in the machinery industry. China is the country with the largest output of nodular cast iron, accounting for more than 1 / 3 of the world’s total annual output. The nodular cast iron produced should not only meet the needs of the domestic market, but also be exported abroad to meet the needs of the international market.
During the Eleventh Five Year Plan period, with the promulgation of the renewable energy law and the medium and long term plan for renewable energy, wind power generation, as the main alternative energy technology to improve the energy structure and deal with climate change and energy security, has received strong support from the government. Affected by the rapid development of the wind power industry, the demand for wind power ductile iron accessories has also increased rapidly, and the supply has been in short supply.
Nodular cast iron for wind power accessories, also known as nodular cast iron for wind power, is a kind of low-temperature and High Toughness Nodular Cast Iron with the development of wind power industry. It is named because its products are used in the field of wind power generation. It is one of the new development directions of nodular cast iron in the near future. Data show that a group of 1-2mw wind turbines need 15-20 tons of ductile iron castings, and 4-5mw wind turbines need 35-50 tons. According to the latest statistics of China Wind Energy Association, the installed capacity of new wind power in China will be 18928mw in 2020. Based on this, it is estimated that the output of nodular iron castings of wind power in China will be more than 200000 tons in 2020, and the export will be greater.