Abstract
Abstract This paper introduces the cold-drawing and rotary-forging precision forming technology of pin parts used in locomotives and rail carriages. The determination of the drawing loads and the rotary forging loads, and the deformation mechanism and product quality are discussed. The deformation process is analyzed using the finite-element method. It has been shown by experiment and production that the pin parts manufactured by cold-drawing and rotary-forging can enhance the surface roughness in the relevant standard, and improve the mechanical properties to some degree. Therefore, it is an advanced precision forming technology for pin parts.
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