Step 1: Heading
Ball blanks are cold headed from rolls of wire. The heading machine cuts off a short cylinder of the material and a moving die with a concave spherical cup drives the cylinder into a matching cup in a fixed die. The result is spherical shape, which is the ball blank.
The flashing operation removes the slight band and small protrusions left on the surface by rolling them between two hard alloy plates under high pressure.
Step 3: Heat Treat
The balls are hardened. If required, by heating them to a high temperature in a furnace, then quenching them in a liquid bath.
Step 4: Rough Grind/ Finish Lap
The hardened balls are precision ground by rolling them between the faces of a fixed iron plate and a very hard fine-grit grinding wheel.
The hardened ground balls are then rolled between two cast iron plates. This critical process determines the final quality of each precision ball.
Step 5: Finishing
The final production operation cleans the finished balls and adds a shiny luster to them.
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