Spinning
What is spinning
Spinning in metalworking, also known as spin forming, is a processing method in which a flat or hollow blank is fixed on the die (core die) of a spinning machine. The blank rotates with the main shaft, and at the same time, a roller or a push - rod applies pressure to the blank, causing it to undergo local plastic deformation, so as to obtain various shaped rotary parts. This process has a long history, dating back to ancient Egypt. At that time, craftsmen used manual lathes for operation. After the Industrial Revolution, it became mechanized, and now it is widely used in modern manufacturing.
Cold Spinning
The metal blank is spun at room temperature. It is applicable to some metal materials that have good plasticity at room temperature, such as aluminum and copper. Cold spinning can endow parts with good dimensional accuracy and surface quality, and can also increase the strength of parts through work - hardening.
Hot Spinning
The metal blank is heated before spinning. For some metal materials with poor plasticity and high deformation resistance at room temperature, such as certain high - temperature alloys and titanium alloys, hot spinning can reduce their deformation resistance, making the metal easier to flow and deform, thus facilitating the forming process.
application industries
automotive parts
Exhaust manifolds can be spun to achieve complex shapes that optimize the flow of exhaust gases, improving engine efficiency and reducing emissions.
aerospace fittings
In the aerospace sector, spinning is used to manufacture components such as rocket nose cones, fuel tanks, and aircraft engine parts.
lighting industry
Spinning enables the creation of lamp shades in a wide variety of shapes, from simple cylinders and cones to more complex, artistic forms
engine components
Spinning is utilized to form the dome - shaped or flat - topped piston crowns with accuracy.Spinning can be used to form the engine brackets and mounts cylindrical or tubular parts of these components
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