If you ask a diamond wheel sellers about their grinding wheels, there's a good chance they will give you the classic "grinds fast, long life" to describe their products.
Diamond grinding may be a mature technology, and there are effective ways a manufacturer can alter the performance of their grinding wheels. Diamond grit size and bonding decisions ar the first factors that confirm a wheel's performance.
Diamond grits are the grinding agents. Naturally the larger and higher-grade they're, the a lot of sharply the wheel can grind.
The common grit size for concrete wheel is #30/40.
More aggressive grinding wheels can typically use #20/25 diamond grits.
Bonding is the material that holds the diamond grits together. An optimized bonding formula should accomplish two things:
Holds the diamond grits firmly to increase grinding life time.
When the grits do mug up, it ought to expose consecutive layer of grits quickly.
We did some testing to see the effects in action, and here's what we've found:
Grit Size
A #20/25 wheel grinds regarding 30-40% quicker compare to a #30/40 wheel. (on concrete, with same type of bonding)
However, the lifetime is reduced by about 10%-15%
Bonding
For concrete below 4000 psi, the difference between a low cost bonding and a high end bonding isn't significant.
For concrete over 4000 psi but, using an optimized bonding grinds 20-40% faster, and increases lifetime by 50-80%. They also feel a lot smoother during use.
With consideration to labor prices, the performance and lifetime you get with better grit and bonding will be well worth its higher cost.
If we have a tendency to also are grinding epoxy, mastics, glues, etc., the upper grit size and bonding become a necessity because the lower finish grinding wheels can struggle to operate on such tacky surfaces.
Concrete Floor Grinding Disc ZL-16L
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Henry Wang | Quote Manager
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