Roll forging machine can make full use of the material, the radial deformation of the material combined with axial deformation, so that the material utilization rate increased by 10-30%. For example, for a cylindrical workpiece with a diameter of 50mm, the material utilization rate of the roll forging machine can reach 90% -95%, while the material utilization rate of the forging or machining process is only 70% -80%.
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