Application scope of free forging

Forging, as a commonly used forming method in mechanical manufacturing, is the use of forging machinery to exert pressure on metal blanks to make them plastic deformation, with certain mechanical properties, shape and size. According to its forming method, forging can be divided into free forging, die forging, cold heading, radial forging, extrusion, forming rolling, roll forging, rolling, etc. The deformation of the blank under pressure is basically not subject to external restrictions, which is called free forging; The blank deformation using other forging methods is limited by the die, which is collectively referred to as closed mode forging.

The forging manufacturing industry, especially the large forging manufacturing industry, such as nuclear power, supercritical and combined cycle power generation, offshore platforms, high-speed trains, aerospace, low-speed crankshafts and other forging manufacturing, has a high technological content and is the lifeblood of the country's independent construction industry, as well as an indispensable strategic industry related to national security and national economic lifeblood.

Forgings are the basis of the equipment manufacturing industry. They are widely used in aviation, shipbuilding, engineering machinery, electrical equipment, high-speed trains, etc. In mechanical equipment, forged parts account for a high proportion of the total weight, and internal combustion engines account for 80%. 00%, 50% for tractors. 00%-80。 00%, hydraulic parts and pump machinery account for 50%. 00%-60。 00%; Almost all the key components in the automobile are made of forged parts; Aircraft 85. About 00% of the components are forged; Metallurgy, mining, power station and other major equipment rely on large forgings, so the quality of forgings directly affects the quality and performance of the whole machine.

Benefiting from the rapid progress of domestic industrialization, the output of domestic forging industry has grown rapidly since 2006. The total forging output of domestic forging enterprises increased from 3.84 million tons in 2006 to 10.67 million tons in 2011, with an average annual growth of 35. 57%, of which the output of die forgings increased from 2.8 million tons in 2006 to 6.69 million tons in 2011, with an average annual growth rate of 27. 79%; The output of free forging increased from 970000 tons in 2006 to 3.99 million tons in 2011, with an average annual growth of 62. 23%。

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