The detailed production process of bearing steel balls is as follows:
Wire Drawing: The purchased wire is stretched to the required diameter using a wire drawing machine.
Cold Heading (Forging): The stretched wire is placed into a steel ball cold heading machine, where the internal steel dies forge it into a ball blank.
Brightening: Two cast iron grinding plates inside a brightening machine press and file the cold-headed ball blank to remove the outer ring and two points from the ball blank.
Soft Grinding: Two cast iron grinding plates inside a soft grinding machine file and grind the brightened ball blank to achieve the desired ball diameter and surface roughness.
Heat Treatment: The balls are placed into a heat treatment furnace, where they are carburized, quenched, and then tempered to give the balls a certain carburized layer, hardness, toughness, and crushing load capability.
Hard Grinding: Grinding wheels inside a grinding machine press and grind the heat-treated ball blanks to remove the black oxide layer on the ball's surface and correct its accuracy.
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