The hardness of grinding steel ball is high and steady, and also toughness is good through controlled by equipment.

1.Rough forming:

The balls are formed into rough spheres on cold heading,hot forging,or hot rolling machines.

2.Flashing:

The balls are ground under pressure between rotating grooved case iron plates to improve sphericity.

3.Heat Treatment:

The balls are through hardened by heating to 840°C and quenching.They are then tempered to remove excess stresses.

4.Hard Grinding:

The hardened balls are then ground under pressure between a rotating girinding wheel and a stationary cast iron plate.

5.Finish lapping:

The balls are carefully lapped to their final dimensions between grooved cast iron plates.one rotating and one stationary.

6.Inspection:

Varies according to grade from 4% AQL for commercial grades to 100% electronic scan and crack detecting for high precision.

steel balls