What size of green silicon carbide is used for steel ball grinding?
The size of green silicon carbide (GC) used in steel ball grinding (primarily the grit size) depends on the specific grinding stage (rough grinding, fine grinding, or superfinishing) and the surface finish and dimensional accuracy requirements.
In general, ball grinding is a multi-stage, coarse-to-fine process that uses a range of abrasive grit sizes.
1. Rough Grinding Stage (Removal of Material, Initial Forming)
This stage’s primary purpose is to quickly remove excess material from the steel and grind the ball into a nearly spherical shape. High efficiency is required, with less demanding surface finish.
Recommended grit sizes: 16#, 20#, 24#, 30#, 36#
2. Semi-finishing/Intermediate Grinding Stage (Improving Roundness and Size)
Recommended grit sizes: 46#, 54#, 60#, 70#
3. Finishing Grinding Stage (Achieving Final Size and Accuracy)
This is the most critical step, aiming to achieve close to final size, high geometric accuracy, and a superior surface finish.
Recommended grit sizes: 80#, 90#, 100#, 120#, 150#
4. Super-Lapping/Polishing (Achieving Final Surface Finish)
Recommended grit sizes: 180#, 220#, 240#, 280#, 320#, 400#, 500#, 600#, and even finer.
